JP2006031526A - Information processing apparatus and method, recording medium, and program - Google Patents

Abstract

A program executed by different computers stored in two or more nonvolatile memories can be updated at once and reliably. A main program 152 on a nonvolatile memory 112 or When updating the main program 162 on the nonvolatile memory 118, one of the two processors of the receiver updates the main program 152 based on the update data 153 according to the boot program 151, and the other processors In accordance with the boot program 161, the update data 163 is acquired from one processor, and the main program 162 is updated based on the update data 163. The present invention can be applied to a receiver for digital television broadcasting.
[Selection] Figure 6

Description

  The present invention relates to an information processing apparatus and method, a recording medium, and a program, and relates to an information processing apparatus and method including two or more computers, a recording medium, and a program.

  2. Description of the Related Art In recent years, receivers for digital television broadcasting have become more complicated in system configuration of receivers with the increase in functionality. Therefore, in order to improve receiver development efficiency, speed up parts procurement, reduce receiver costs, etc., each has an independent memory space consisting of non-volatile memory and RAM (Random Access Memory). In some cases, a receiver is provided with a plurality of processors including a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), and the processing of the receiver is distributed and executed by these processors.

  In addition, as shown in "Digital Broadcasting Receiver Standard ARIB STD-B21 Version 4.0, Chapter 12 Download Function and Appendix-3 Download Function, Japan Radio Industry Association" Data (hereinafter referred to as update data) including a program (hereinafter referred to as an update program) for updating a receiver program using radio waves (broadcast waves) transmitted from a broadcasting station (broadcasting company) A mechanism for sending and receiving is being operated. For example, the update data includes a compressed update program and information related to the update program such as version information.

  In this operation, download notification information indicating that update data is to be distributed in advance is multiplexed with the broadcast wave and periodically transmitted from the broadcast station, and the receiver monitors the download notification information. The receiver receives the transport stream transmitted by the specific service (channel) notified by the download notification information at the time notified by the download notification information, and extracts the update data from the received transport stream. Then, the program of the receiver is updated based on the update data. Thereby, the program of the receiver is updated to the latest program without human intervention.

  Here, with reference to FIG. 1 and FIG. 2, an example of a program update process of a receiver having two processors (both not shown) of processor A and processor B will be described.

  FIG. 1 shows an example of the configuration of a program and data stored in a nonvolatile memory 1 that stores programs and data used by the processor A and a nonvolatile memory 2 that stores programs and data used by the processor B. FIG.

  The area of the nonvolatile memory 1 is divided into three areas: a program area 1A, a program area 1B, and a data area 1C. A program executed by the processor A (hereinafter referred to as an execution program) is stored in one of the program areas 1A and 1B. In another program area (hereinafter referred to as a spare program area) that is different from the program area in which the execution program is stored (hereinafter referred to as an execution program area), the program update fails and the update program is executed. If the program executed by the processor A cannot be restored to the original program, the version of the program one older than the current execution program (hereinafter referred to as a spare program) is stored. The data area 1C stores data used when the processor A performs processing.

  Similarly to the area of the nonvolatile memory 1, the area of the nonvolatile memory 2 is divided into three areas: a program area 2A, a program area 2B, and a data area 2C. The execution program for the processor B is stored in one of the program areas 2A and 2B, and the spare program for the processor B is stored in the other. The data area 2C stores data used when the processor B performs processing.

  Next, a program update process of the receiver will be described with reference to the flowchart of FIG. In the description of the flowchart of FIG. 2, it is assumed that the program areas 1A and 2A are set as execution program areas and the program areas 1B and 2B are set as spare program areas in advance. In addition, it is assumed that the download notification information is notified in advance of update data including the update program of the processor A and information regarding distribution of update data including the update program of the processor B.

  When the time notified by the download notification information is reached in advance, in step S1, the processor A downloads update data including the update program of the processor A from the broadcasting station, and the processor A uses the downloaded update data. Store in RAM (not shown).

  In step S2, the processor A prepares for program update. Specifically, the processor A monitors the timing at which the conditions for executing the program update are met, such as monitoring the arrival of a predetermined time such as midnight when the frequency of use of the receiver is low.

  When the conditions for updating the program are satisfied, in step S3, the processor A reads the update program included in the update data stored in the RAM, decompresses the read update program, and uses the decompressed update program as the current spare program. Copy to program area 1B, which is a program area.

  In step S4, the processor A switches the setting of the execution program area of the processor A from the program area 1A to the program area 1B. Thereby, at the next startup, the processor A executes the update program stored in the program area 1B.

  When the time notified by the download notification information is reached in advance, in step S5, the processor B downloads update data including the update program of the processor B, and the processor B uses the downloaded update data (not shown). Store in RAM.

  In step S6, the processor B prepares for the program update in the same manner as the processing by the processor A in step S2.

  When the conditions for updating the program are satisfied, in step S7, the processor B reads the update program included in the update data stored in the RAM, decompresses the read update program, and uses the decompressed update program as the current backup program. Copy to program area 2B, which is a program area.

  In step S8, the processor B switches the setting of the execution program area of the processor B from the program area 2A to the program area 2B, and the program update process ends. Thereby, at the next startup, the processor B executes the update program stored in the program area 2B.

  By the way, in this receiver, the processor A and the processor B may execute processing in a coordinated manner while communicating with each other or transmitting / receiving data. In this case, for example, when the communication protocol between the processor A and the processor B is changed, the program executed by the processor A and the processor B is updated at a time in order to maintain the cooperation of the processing of the processor A and the processor B. Need to switch.

  However, in the program update process described above with reference to FIG. 1 and FIG. 2, the update of the program of the processor A and the update of the program of the processor B are performed independently. I can't switch. In addition, since the update data is distributed by one-way communication from the broadcasting station to the receiver, it is not guaranteed that the receiver can receive the update data reliably, and the programs of both processors are surely updated. Not necessarily. A program update process that can be considered to switch the programs of the processor A and the processor B at a time will be described with reference to FIGS.

  FIG. 3 is a diagram showing an example of the configuration of programs and data stored in the nonvolatile memory 1, the nonvolatile memory 2, and the RAM 3 used when the processor A executes processing. The configuration example of the program and data stored in the nonvolatile memories 1 and 2 shown in FIG. 3 is the same as the configuration example shown in FIG.

  Next, with reference to the flowchart of FIG. 4, the update process of the program of the receiver when the programs of the processor A and the processor B are switched at once will be described. In the description of the flowchart of FIG. 4, it is assumed that the program areas 1A and 2A are set as execution program areas and the program areas 1B and 2B are set as preliminary program areas in advance.

  Also, data including the information related to the update program such as version information and the like (hereinafter referred to as “multiplex update data”) is distributed from the broadcasting station by compressing and multiplexing the update program of the processor A and the update program of the program B. In addition, before the multiple update data is distributed, the distribution time at which the multiple update data is distributed, the service (channel) for distributing the multiple update data, the update program of the processor A and the processor B included in the multiple update data It is assumed that download notification information including a version obtained by integrating versions of update programs (hereinafter referred to as an integrated version) and the like is multiplexed on a broadcast wave and periodically transmitted from a broadcast station.

  In step S21, the processor A determines whether or not a program newer than the current program can be downloaded. Specifically, when the processor A receives the download notification information, whether or not the integrated version of the update program included in the distributed multiple update data is newer than the integrated version of the current execution programs of the processors A and B. Determine. If it is determined that the integrated version of the update program is newer than the integrated version of the current execution program, that is, it is possible to download a newer program than the current execution program, the process proceeds to step S22.

  When the time notified by the download notification information is reached in advance, the processor A downloads the multiple update data and stores it in the RAM 3 in step S22. At this time, the processor A separates the multiple update data into update data including the update program of the processor A and update data including the update program of the processor B, and stores the update data of the processor A in the area 3C of the RAM 3. The update data of the processor B is stored in the area 3B of the RAM 3. The area 3A of the RAM 3 stores data used by the processor A for processing, and includes an empty area of the RAM 3.

  In step S23, the processor A prepares for program update. Specifically, for example, the processor A monitors the timing when a condition for executing the program update is met, such as monitoring when a predetermined time in the middle of the night when the frequency of use of the receiver is low is reached, and updates the program. When the condition for executing the above is satisfied, the value of the update flag indicating whether or not the program has been reliably updated is set to OFF.

  When the conditions for updating the program are satisfied, in step S24, the processor A reads the update program included in the update data stored in the area 3C of the RAM 3, decompresses the read update program, and extracts the decompressed update program. Copy to the program area 1B, which is the current spare program area of the processor A.

  In step S25, the processor A transmits the update data stored in the area 3B of the RAM 3 to the processor B, and the processor B decompresses the update program included in the received update data, and the decompressed update program is processed by the processor B. To the program area 2B, which is the current spare program area.

  In step S26, the processor A switches the setting of the execution program area of the processor A from the program area 1A to the program area 1B. Thereby, at the next startup, the processor A executes the update program stored in the program area 1B.

  In step S27, the processor B switches the setting of the execution program area of the processor B from the program area 2A to the program area 2B. Thereby, at the next startup, the processor B executes the update program stored in the program area 2B. After that, the processor B transmits a signal indicating that the switching of the execution program area setting has been completed to the processor A, and the processor A sets the value of the update flag to ON in response to the reception of the signal, and updates the program. The process ends.

  If it is determined in step S21 that a program newer than the current program cannot be downloaded, the program update process ends.

In addition, an electronic commerce apparatus and method that distributes processing among a plurality of servers have been proposed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2002-15260

  However, in the program update process described above with reference to FIGS. 3 and 4, if the power supply to the receiver is interrupted due to a power failure or the like between the processes of steps S26 and S27, the next receiver is started. In this case, only the processor A starts the update program, and there is a problem that the versions of the execution programs of the processor A and the processor B are inconsistent. Also, for example, when the supply of power to the receiver is interrupted during the processing of steps S24 and S25 in FIG. 4 and only the program of one processor is updated, the original program is restored after the receiver is restarted. In order to be able to execute, it is necessary to store the spare program of the previous version of the update program in the nonvolatile memories 1 and 2, and there is a problem that the capacity of the nonvolatile memories 1 and 2 becomes large.

  Furthermore, in order to temporarily store the multiple update data downloaded from the broadcasting station in the RAM 3, the power to the receiver is between the end of step S22 in FIG. 4 and the end of step S25. Is interrupted, the multiple update data stored in the RAM is erased before the program update is completed, so the multiple update data must be downloaded again.

  In order to avoid this, a method of storing the downloaded multiple update data in the nonvolatile memory 1 or the nonvolatile memory 2 instead of the RAM 3 is also conceivable. It is a program before update, and it is necessary to hold the program before update at least until the program update process is completed. Accordingly, four types of data, that is, an execution program, a spare program, update data of the processor A, and update data of the processor B are stored at one time in one nonvolatile memory, and the execution program and the spare program are stored once in the other nonvolatile memory. There is a problem that the capacity of the nonvolatile memories 1 and 2 is increased.

  Moreover, in the invention described in Patent Document 1, updating of a program executed by each server is not disclosed, and the above-described problem has not been solved.

  The present invention has been made in view of such a situation. A program executed by different computers stored in two or more non-volatile memories with a smaller capacity non-volatile memory at a time and reliably. It is intended to be able to be updated.

  An information processing apparatus according to the present invention includes a first computer, a second computer, a nonvolatile first storage unit that stores a first information processing program executed by the first computer, and a second computer An information processing apparatus comprising a non-volatile second storage means for storing a second information processing program executed by the first update data including data for updating the first information processing program Alternatively, the second update data including the data for updating the second information processing program is acquired and stored in the first storage unit and the first update processing program is executed. First updating means for updating the first information processing program stored in the first storage means based on the first update data, realized by one computer; Realized by a first computer that executes an update processing program, a transmission unit that transmits second update data to the second computer, and a second computer that executes the second update processing program And second update means for updating the second information processing program stored in the second storage means based on the second update data transmitted by the transmission means. To do.

  Setting means for setting one's state to an update state for updating the first information processing program or the second information processing program, realized by a first computer that executes the first information processing program; When the own computer state is set to the update state, the first computer is controlled to execute the first update processing program. When the user computer state is not set to the update state, the first computer is controlled. Is implemented by first execution control means for controlling the execution of the program of the first computer so that the first information processing program is executed, and the first computer for executing the first information processing program. The first notification means for notifying the second computer of its own state and the first computer for executing the first update processing program are realized. The second notifying means for notifying the second computer of the own state and the own notifying state notified by the first notifying means or the second notifying means is set to the update state; The computer controls to execute the second update processing program, and when the state of the computer is not set to the update state, the second computer is configured to execute the second information processing program. Second execution control means for controlling execution of a computer program can be further included.

  The first computer executes the first update processing program at startup, and the first execution control means is realized by the first computer that executes the first update processing program, and its state is updated. When the state is not set, execution of the program of the first computer can be controlled so that the first computer executes the first information processing program.

  The second computer executes the second update processing program at startup, and the second execution control means is realized by the second computer executing the second update processing program, and its state is updated. When the state is not set, the execution of the program of the second computer can be controlled so that the second computer executes the second information processing program.

  It is possible to further include notification control means for controlling the notification so as to notify the user that his / her state is set to the update state.

  The transmission means is only when the version of the second information processing program is updated with the second update data to a version newer than the version of the second information processing program stored in the second storage means. The second update data can be transmitted to the second computer.

  The first update processing program can be stored in the first storage means, and the second update processing program can be stored in the second storage means.

  The information processing method of the present invention includes a first computer, a second computer, a nonvolatile first storage means for storing a first information processing program executed by the first computer, and a second computer. An information processing method for an information processing apparatus including a non-volatile second storage unit that stores a second information processing program executed by the computer, and includes data for updating the first information processing program. 1st update data or 2nd update data including the data for updating the 2nd information processing program, the acquisition step which makes the 1st storage means memorize, and the 1st update processing program The first information processing program stored in the first storage means is updated based on the first update data, realized by a first computer that executes An update step, a transmission step for transmitting the second update data to the second computer, realized by the first computer that executes the first update processing program, and the second update processing program are executed. A second information processing program that is realized by the second computer and that updates the second information processing program stored in the second storage means based on the second update data transmitted by the process of the transmission step. And an update step.

  The program recorded on the first recording medium of the present invention includes a first computer, a second computer, and a nonvolatile first storage for storing a first information processing program executed by the first computer. Means and a program for a first computer of an information processing apparatus comprising a non-volatile second storage means for storing a second information processing program executed by the second computer, wherein the first information Updating the first information processing program stored in the first storage means based on the first update data stored in the first storage means including data for updating the processing program. An update step and second update data stored in the first storage means including data for updating the second information processing program are stored in the second storage means. Characterized in that it comprises a transmission control step of controlling the transmission to the second computer to update the second information processing program that.

  The program recorded on the second recording medium of the present invention includes a first computer, a second computer, and a nonvolatile first storage for storing a first information processing program executed by the first computer. And a program for a second computer of an information processing apparatus comprising a nonvolatile second storage means for storing a second information processing program executed by the second computer, wherein the first information The first information processing program stored in the first storage unit is updated based on the first update data stored in the first storage unit including data for updating the processing program. A second program including data for updating the second information processing program read from the first storage means by the first computer and transmitted by the first computer; Based on the update data, characterized in that it comprises a second updating step of updating the information processing program stored in the second storage means.

  The first program of the present invention includes a first computer, a second computer, a nonvolatile first storage means for storing a first information processing program executed by the first computer, and a second A program for causing a first computer of an information processing apparatus provided with a non-volatile second storage means for storing a second information processing program executed by the computer to perform information processing, the first information processing program An updating step for updating the first information processing program stored in the first storage means based on the first update data stored in the first storage means including data for updating the program. And the second update data stored in the first storage means including the data for updating the second information processing program is stored in the second storage means. Characterized in that it comprises a transmission control step of controlling the transmission to the second computer to update the second data processing program.

  The second program of the present invention includes a first computer, a second computer, a non-volatile first storage means for storing a first information processing program executed by the first computer, and a second A program for causing a second computer of an information processing apparatus provided with a non-volatile second storage means to store a second information processing program executed by the computer to perform information processing, the first information processing program A first information processing program stored in the first storage unit is updated based on the first update data stored in the first storage unit including data for updating the program. Second data including data for updating the second information processing program read from the first storage means by the computer and transmitted by the first computer Based on new data, characterized in that it comprises a second second updating step of updating the information processing program stored in the storage means.

  In the information processing apparatus and method of the present invention, the first update data including data for updating the first information processing program or the second data including data for updating the second information processing program is provided. The second update data is acquired, stored in the first storage means, and the first information processing program stored in the first storage means is stored by the first computer based on the first update data. The second update data is transmitted to the second computer, and the second computer stores a second information processing program stored in the second storage means based on the second update data. Updated.

  In the first recording medium and the first program of the present invention, the first program includes data for updating the first information processing program stored in the first storage means by the first computer. Based on the update data, the first information processing program stored in the first storage means is updated and stored in the first storage means including data for updating the second information processing program. The transmission of the second update data being performed to the second computer for updating the second information processing program stored in the second storage means is controlled.

  In the second recording medium and the second program of the present invention, the first computer stored in the first storage means including the data for updating the first information processing program by the second computer. Read from the first storage means by the first computer that updates the first information processing program stored in the first storage means based on the update data and transmitted by the first computer. Based on the second update data including the data for updating the second information processing program, the second information processing program stored in the second storage means is updated.

  As described above, according to the information processing apparatus and method, the recording medium, and the program of the present invention, the program executed by the computer can be updated. In addition, according to the information processing apparatus and method, the recording medium, and the program of the present invention, a program executed by different computers stored in two or more nonvolatile memories with a smaller capacity nonvolatile memory is executed once. And can be updated reliably.

  Embodiments of the present invention will be described below. Correspondences between constituent elements described in the claims and specific examples in the embodiments of the present invention are exemplified as follows. This description is to confirm that specific examples supporting the invention described in the claims are described in the embodiments of the invention. Therefore, even though there are specific examples that are described in the embodiment of the invention but are not described here as corresponding to the configuration requirements, the specific examples are not included in the configuration. It does not mean that it does not correspond to a requirement. On the contrary, even if a specific example is described here as corresponding to a configuration requirement, this means that the specific example does not correspond to a configuration requirement other than the configuration requirement. not.

  Further, this description does not mean that all the inventions corresponding to the specific examples described in the embodiments of the invention are described in the claims. In other words, this description is an invention corresponding to the specific example described in the embodiment of the invention, and the existence of an invention not described in the claims of this application, that is, in the future, a divisional application will be made. Nor does it deny the existence of an invention added by amendment.

  The information processing apparatus according to claim 1 (for example, the receiver 102 of FIG. 5) includes a first computer (for example, the processor 111 of FIG. 5), a second computer (for example, the processor 117 of FIG. 5), and the A first non-volatile storage means (for example, the non-volatile memory 112 in FIG. 5) for storing a first information processing program (for example, the main program 152 in FIG. 6) executed by the first computer; Information processing provided with non-volatile second storage means (for example, non-volatile memory 118 in FIG. 5) for storing a second information processing program (for example, main program 162 in FIG. 6) executed by the second computer. 1st update data (for example, update data 153 of FIG. 6) including data for updating the first information processing program, or an apparatus Acquisition means (for example, FIG. 6) that acquires second update data (for example, update data 163 in FIG. 6) including data for updating the second information processing program and stores the second update data in the first storage means. 7 update data reception control unit 201) and the first update data realized by the first computer executing the first update processing program (for example, the boot program 151 in FIG. 6). First update means for updating the first information processing program stored in the first storage means (for example, the program update control unit 303 in FIG. 9), and the first update processing program The transmission means (for example, the update data transmission control of FIG. 9) that transmits the second update data to the second computer, realized by the first computer that executes 306) and the second update data transmitted by the transmission means, realized by the second computer that executes the second update processing program (for example, the boot program 161 of FIG. 6). And second update means (for example, the program update control unit 326 in FIG. 10) for updating the second information processing program stored in the second storage means.

  The information processing apparatus according to claim 2 (for example, the receiver 102 of FIG. 5) is realized by the first computer that executes the first information processing program. Alternatively, setting means (for example, the mode management unit of FIG. 7) sets its own state (for example, an unupdated flag) to an update state for updating the second information processing program (for example, turns on the unupdated flag) 202), and when the own state is set to the update state, the first computer is controlled to execute the first update processing program, and the own state is set to the update state. If not set, a first execution for controlling execution of the program of the first computer so that the first computer executes the first information processing program Notifying the second computer of the state of the user realized by the control means (for example, the program activation control unit 302 in FIG. 9) and the first computer that executes the first information processing program The second computer displays the state of itself as realized by first notification means (for example, the other processor control unit 204 in FIG. 7) and the first computer that executes the first update processing program. The second notification means (for example, the other processor control unit 305 in FIG. 9) and the state notified by the first notification means or the second notification means are set to the update state. If the second computer controls the second computer to execute the second update processing program, the own state is not set to the update state. Second execution control means for controlling the execution of the program of the second computer so that the second computer executes the second information processing program (for example, the program start control unit 323 in FIG. 10) And further comprising.

  The information processing apparatus according to claim 5 (for example, the receiver 102 in FIG. 5) is a notification control unit that controls notification so as to notify a user that the state of the user is set to the update state. For example, the notification control unit 324) of FIG. 10 is further included.

  The recording method according to claim 8 includes a first computer (for example, processor 111 in FIG. 5), a second computer (for example, processor 117 in FIG. 5), and first information executed by the first computer. Nonvolatile first storage means (for example, the non-volatile memory 112 in FIG. 5) for storing a processing program (for example, the main program 152 in FIG. 6), and second information executed by the second computer An information processing apparatus (for example, the receiver 102 of FIG. 5) including a non-volatile second storage unit (for example, the non-volatile memory 118 of FIG. 5) for storing a processing program (for example, the main program 162 of FIG. 6). And the first update data including data for updating the first information processing program (for example, the update data 153 in FIG. 6). Or an acquisition step of acquiring second update data (for example, update data 163 in FIG. 6) including data for updating the second information processing program and storing the second update data in the first storage means ( For example, based on the first update data realized by step S145 in FIG. 13 and the first computer that executes the first update processing program (for example, the boot program 151 in FIG. 6), A first update step (for example, step S204 in FIG. 15) for updating the first information processing program stored in the first storage means, and the first update processing program are executed. A transmitting step of transmitting the second update data to the second computer realized by the first computer (for example, step S in FIG. 15). 08) and the second update data transmitted by the process of the transmission step, realized by a second computer that executes the second update processing program (for example, the boot program 161 in FIG. 6). And a second update step (for example, step S259 in FIG. 17) for updating the second information processing program stored in the second storage means.

  The program recorded on the recording medium according to claim 9 (for example, the recording medium 131 in FIG. 6) is stored in a first computer (for example, the processor 111 in FIG. 5) and a second computer (for example, in FIG. 5). Processor 117), a first non-volatile storage means (for example, the non-volatile memory 112 in FIG. 5) for storing a first information processing program (for example, the main program 152 in FIG. 6) executed by the first computer. ) And a second non-volatile storage means (for example, the non-volatile memory 118 in FIG. 5) for storing a second information processing program (for example, the main program 162 in FIG. 6) executed by the second computer. A program for the first computer of the information processing apparatus comprising: data for updating the first information processing program; The first information processing program stored in the first storage unit based on the first update data (for example, the update data 153 in FIG. 6) stored in the first storage unit Update step (for example, step S204 in FIG. 15) and second update data (for example, stored in the first storage means including data for updating the second information processing program) , The transmission control step (for example, FIG. 6) for controlling transmission of the update data 163 in FIG. 6 to the second computer for updating the second information processing program stored in the second storage unit. 15 step S208).

  The program recorded in the recording medium according to claim 10 (for example, the recording medium 131 in FIG. 6) is stored in a first computer (for example, the processor 111 in FIG. 5) and a second computer (for example, in FIG. 5). Processor 117), a first non-volatile storage means (for example, the non-volatile memory 112 in FIG. 5) for storing a first information processing program (for example, the main program 152 in FIG. 6) executed by the first computer. ) And a second non-volatile storage means (for example, the non-volatile memory 118 in FIG. 5) for storing a second information processing program (for example, the main program 162 in FIG. 6) executed by the second computer. The program for the second computer of the information processing apparatus comprising the data for updating the first information processing program The first information processing program stored in the first storage unit based on the first update data (for example, the update data 153 in FIG. 6) stored in the first storage unit is included. Second update data including data for updating the second information processing program read from the first storage means by the first computer to be updated and transmitted by the first computer An update step (for example, step S259 in FIG. 17) for updating the second information processing program stored in the second storage unit based on (for example, update data 163 in FIG. 6) is included. It is characterized by.

  The program according to claim 11 is a first computer (for example, processor 111 in FIG. 5), a second computer (for example, processor 117 in FIG. 5), and first information processing executed by the first computer. Non-volatile first storage means (for example, the non-volatile memory 112 in FIG. 5) for storing a storage program (for example, the main program 152 in FIG. 6), and second information processing executed by the second computer Of an information processing apparatus (for example, the receiver 102 of FIG. 5) provided with a non-volatile second storage means (for example, the non-volatile memory 118 of FIG. 5) for storing a program for use (for example, the main program 162 of FIG. 6). A program for causing the first computer to perform information processing, including data for updating the first information processing program Based on the first update data (for example, update data 153 in FIG. 6) stored in the first storage means, the first information processing program stored in the first storage means An update step for updating (for example, step S204 in FIG. 15) and second update data (for example, stored in the first storage means including data for updating the second information processing program) A transmission control step (for example, FIG. 15) for controlling transmission of the update data 163) of FIG. 6 to the second computer for updating the second information processing program stored in the second storage means. Step S208).

  The program according to claim 12 is a first computer (for example, the processor 111 in FIG. 5), a second computer (for example, the processor 117 in FIG. 5), and first information processing executed by the first computer. Non-volatile first storage means (for example, the non-volatile memory 112 in FIG. 5) for storing a storage program (for example, the main program 152 in FIG. 6), and second information processing executed by the second computer Of an information processing apparatus (for example, the receiver 102 of FIG. 5) provided with a non-volatile second storage means (for example, the non-volatile memory 118 of FIG. 5) for storing a program for use (for example, the main program 162 of FIG. 6) A program for causing the second computer to perform information processing, including data for updating the first information processing program The first information processing program stored in the first storage unit is updated based on the first update data stored in the first storage unit (for example, the update data 153 in FIG. 6). Second update data including data for updating the second information processing program read from the first storage means by the first computer and transmitted by the first computer ( For example, an update step (for example, step S259 in FIG. 17) for updating the second information processing program stored in the second storage means based on the update data 163) in FIG. 6 is included. Features.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 5 is a block diagram showing a configuration of an embodiment of the receiver 102 to which the present invention is applied. The receiver 102 receives a broadcast wave transmitted from the broadcast station via the antenna 101, outputs an image included in the broadcast wave to the display 103, displays the image on the display 103, and also includes an audio included in the broadcast wave. Is output to the speaker 104, and sound is output from the speaker 104.

  The receiver 102 includes a processor 111, a nonvolatile memory 112, a RAM 113, an operation input unit 114, a network interface (I / F) 115, a drive 116, a processor 117, a nonvolatile memory 118, a RAM 119, a front end unit 120, and a descrambler 121. , A demultiplexer 122, an MPEG (Moving Picture Experts Group) decoder 123, a video signal processor 124, and an audio signal processor 125. The processor 111, processor 117, front end unit 120, descrambler 121, demultiplexer 122, MPEG decoder 123, video signal processing unit 124, and audio signal processing unit 125 are connected to each other via a bus 126.

  A non-volatile memory 112, a RAM 113, an operation input unit 114, a network interface 115, and a drive 116 are connected to the processor 111. The processor 111 is configured by, for example, a CPU, an MPU, and the like. The processor 111 receives a process instruction or data input input by the user using the operation input unit 114, and performs various processes according to a program stored in the nonvolatile memory 112. Execute.

  The processor 111 controls the front end unit 120, the descrambler 121, the demultiplexer 122, and the MPEG decoder 123 to receive a broadcast wave transmitted from the broadcast station, demodulate data included in the broadcast wave, and release scramble. Then, separation processing for separating data included in the broadcast wave into video data, audio data, section data, etc., decoding of video data, audio data, and the like are executed. Further, the processor 111 performs update processing of a program executed by the processor 111 as will be described later with reference to FIGS. 11 to 19.

  Nonvolatile memory 112 is, for example, flash memory, EEPROM (Electrically Erasable and Programmable Read Only Memory), HDD (Hard Disk Drive), MRAM (Magnetoresistive Random Access Memory), FeRAM (Ferroelectric Random Access Memory, ferroelectric) Body memory), OUM (Ovonic Unified Memory), and other rewritable nonvolatile memories. The nonvolatile memory 112 stores a program executed by the processor 111, download notification information received by the receiver 102, download data, and the like, as will be described later with reference to FIG.

  The RAM 113 stores programs used in the execution of the processor 111, parameters and data that change as appropriate during the execution.

  The operation input unit 114 includes an input button, a dial, and the like, and supplies signals and data indicating processing instructions input by the user to the processor 111.

  The network interface 115 is configured by a modem, an IEEE802.3 interface, etc., and establishes a data link with a server connected to a network (not shown). If necessary, FTP (File Transfer Protocol) or HTTP (Hyper Text Transport) Predetermined data is transmitted and received by a data transfer protocol such as Protocol.

  The drive 116 includes a magnetic disk (including a flexible disk), an optical disk (including a CD-ROM (Compact Disc-Read Only Memory), a DVD (Digital Versatile Disc)), and a magneto-optical disk (MD (Mini-Disc) (registered). A recording medium 131 including a semiconductor memory or the like is mounted as appropriate. The drive 116 reads data and programs from the recording medium 131 and writes data and programs to the recording medium 131. The program read from the recording medium 131 is stored and installed in the nonvolatile memory 112 or the RAM 113 as necessary. Further, the processor 111 supplies data and programs read from the recording medium 131 to the processor 117 via the bus 126 as necessary. The processor 117 stores the acquired program in the nonvolatile memory 118 or the RAM 119 and installs it as necessary.

  A nonvolatile memory 118 and a RAM 119 are connected to the processor 117. The processor 117 receives processing instructions and data input that the user inputs using the operation input unit 114 via the processor 111 and the bus 126, and performs various processes according to programs stored in the nonvolatile memory 118. Execute.

  The processor 117 controls the video signal processing unit 124 and the audio signal processing unit 125 to generate a video signal to be displayed on the display 103 from the decoded video data, and output audio from the speaker 104 from the decoded audio data. Signal generation processing, channel (service) selection processing for displaying on the display 103 or outputting sound from the speaker 104, control of the volume output from the speaker 104, and the like. In addition, the processor 117 performs power control of each unit of the receiver 102. Further, as will be described later with reference to FIGS. 11 to 19, the processor 117 performs update processing of a program executed by the processor 117.

  The nonvolatile memory 118 is configured by a rewritable nonvolatile memory such as a flash memory, EEPROM, HDD, MRAM, FeRAM, and OUM, for example, similarly to the nonvolatile memory 112. As will be described later with reference to FIG. 6, the nonvolatile memory 118 stores a program executed by the processor 117, data used when the processor 117 executes processing, and the like.

  The RAM 119 stores programs used in the execution of the processor 117, parameters and data that change as appropriate during the execution.

  The processor 111 and the processor 117 communicate with each other via the bus 126 to transmit and receive various data, programs, control signals, and the like.

  The front end unit 120 extracts a broadcast signal corresponding to a user's channel selection or an instruction from the processor 111 from a broadcast wave received via the antenna 101, demodulates it, generates a transport stream, and generates a descrambler. 121 is supplied.

  The descrambler 121 appropriately scrambles the transport stream supplied from the front end unit 120 and supplies the descrambler 122 to the demultiplexer 122.

  The demultiplexer 122 separates the multiplexed transport stream into a stream such as video or audio data or section data. The demultiplexer 122 supplies the separated video data and audio data to the MPEG decoder 123. The demultiplexer 122 supplies section data required by the processor 111 to the processor 111 via the bus 126 based on the parameters supplied by the processor 111. The processor 111 stores the acquired section data in the nonvolatile memory 112 or the RAM 113 as necessary.

  Section data includes DSM-CC (Digital Storage Media Command and Control) section, download notification information (SDTT (Software Download Trigger Table)), and EPG (Electronic Program Guide) information used for data broadcasting and data download. Including. The DSM-CC section includes, for example, data (hereinafter referred to as update) including data related to the update program such as data obtained by compressing a program (hereinafter referred to as update program) for updating a program executed by the processor 111 and the version of the update program. Data) and data obtained by multiplexing the update data of the program executed by the processor 117 and the update data including information related to the update program such as the version of the update program (hereinafter referred to as multiple update data). Including.

  The data format of the update program included in the multiple update data is not particularly limited, and may be encrypted, or may be a unique format that can be interpreted only by each processor. The multiple update data may include only the updated module among the update programs of each processor.

  In the download notification information, the distribution time at which the multiple update data is distributed, the service (channel) that distributes the multiple update data, and the version of the update program of the processor 111 and the update program of the processor 117 included in the multiple update data are integrated. Version (hereinafter referred to as an integrated version) and the like, and periodically transmitted from the broadcast station before the multiple update data is distributed.

  The MPEG decoder 123 decodes the video data and audio data supplied from the demultiplexer 122, supplies the decoded video data to the video signal processing unit 124, and supplies the decoded audio data to the audio signal processing unit 125.

  The video signal processing unit 124 adds (superimposes) data broadcast data or the like to the video data supplied from the demultiplexer 122, converts it to, for example, an NTSC format video signal, and outputs the converted video signal to the display 103. And displayed on the display 103.

  The audio signal processing unit 125 converts the audio data supplied from the demultiplexer 122 into an analog audio signal, outputs the converted audio signal to the speaker 104, and outputs the audio from the speaker 104.

  FIG. 6 illustrates an example of the configuration of programs and data stored in the nonvolatile memories 112 and 118.

  The storage area of the nonvolatile memory 112 is divided into a boot program area 112A, a main program area 112B, an update data area 112C, an update data area 112D, and a general-purpose data area 112E depending on the type of stored program and data.

  The program executed by the processor 111 includes two programs, a boot program 151 and a main program 152. The boot program 151 is stored in the boot program area 112A, and the main program 152 is stored in the main program area 112B. The boot program 151 is executed by the processor 111 when the processor 111 is started and when the main program 152 is updated, and has limited basic functions such as a communication function with the processor 117, and reading and writing of data in the nonvolatile memory 112 and the RAM 113. It is a small program that provides only functions. In normal processing of the receiver 102, the processor 111 executes a main program 152, and the main program 152 provides functions such as broadcast wave reception processing and digital signal processing included in the broadcast wave.

  The update data area 112C stores update data 153 for updating the main program 152 of the processor 111 included in the multiple update data transmitted from the broadcast station. The update data area 112D stores update data 163 for updating the main program 162 of the processor 117 included in the multiple update data. The general-purpose data area 112E stores section data, data used when the processor 111 executes processing, and the like.

  The storage area of the nonvolatile memory 118 is divided into a boot program area 118A, a main program area 118B, and a general-purpose data area 118C depending on the type of stored program and data.

  The program executed by the processor 117 includes two programs, a boot program 161 and a main program 162. The boot program 161 is stored in the boot program area 118A, and the main program 162 is stored in the main program area 118B. The boot program 161 is executed by the processor 117 when the processor 117 is started and when the main program 162 is updated, and performs a communication function with the processor 111, reading / writing of data in the nonvolatile memory 118 and the RAM 119, and update processing of the main program. This is a small-scale program that provides only limited basic functions such as a function for notifying that it is in the middle and power control for each part of the receiver 102.

  In the normal processing of the receiver 102, the processor 117 executes a main program 162. The main program 162 generates a video signal for video to be displayed on the display 103, and outputs audio from the speaker 104 from decoded audio data. Functions such as audio signal generation processing and channel (service) channel selection processing are provided.

  The general data area 118C stores data used when the processor 117 executes processing.

  Note that the nonvolatile memory 112 or 118 may be configured by a plurality of nonvolatile memories, respectively, and the storage area shown in FIG. 6 may be divided and assigned to the plurality of memories. The boot program 151 or 161 may be stored not in the nonvolatile memory 112 or 118 but in a ROM (Read Only Memory) (not shown) connected to the processor 111 or 117.

  The update data 153 included in the multiple update data distributed from the above-described broadcast station is data for updating the main program 152, and the update data 163 is data for updating the main program 162.

  FIG. 7 is a block diagram illustrating a part of an example of a functional configuration realized by the processor 111 that executes the main program 152. When the processor 111 executes the main program 152, the update data reception control unit 201, the mode management unit 202, the reception unit 203, the other processor control unit 204, and the transmission unit 205 are realized.

  The update data reception control unit 201 supplies predetermined parameters to the demultiplexer 122 via the bus 126 to supply download notification information or multiple update data included in the section data transmitted from the broadcasting station. The update data reception control unit 201 stores the update data 153 included in the acquired multiple update data in the update data area 112C of the nonvolatile memory 112, and stores the update data 163 included in the multiple update data in the update data area 112D. . The update data reception control unit 201 supplies a signal indicating that multiple update data has been acquired (hereinafter, multiple update data acquisition signal) to the mode management unit 202. The update data reception control unit 201 controls the front end unit 120 via the bus 126 when the distribution time indicated in the download notification information is reached, and download notification information from the broadcast signal received via the antenna 101. Select the service (channel) shown in.

  When the main program 152 or 162 can be updated, the mode management unit 202, for example, at a predetermined time such as midnight when the frequency of use of the receiver 102 that is predetermined to update the main program 152 or 162 is low is used. In addition, when the receiver 102 is in an unused standby state, a signal indicating that updating of the main program 152 or 162 is started (hereinafter referred to as an update processing start signal) is supplied to the other processor control unit 204. .

  The mode management unit 202 manages an unupdated flag indicating whether or not the receiver 102 is executing update processing of the main program 152 or 162. The value of the unupdated flag is stored, for example, in a predetermined area of the general-purpose data area 112E of the nonvolatile memory 112, and is set to off in the initial state when the receiver 102 is shipped. The mode management unit 202 confirms that a flag (hereinafter referred to as an update mode setting flag) indicating a mode (hereinafter referred to as an update mode) indicating that the main program managed by the processor 117 is being updated is turned on. When a signal to be notified (hereinafter referred to as an update mode setting completion signal) is acquired from the other processor control unit 204, an unupdated flag is turned on, and a signal to notify that the value of the unupdated flag is turned on (hereinafter referred to as an unupdated flag) (Referred to as an update flag setting completion signal) is supplied to the other processor control unit 204.

  When the non-update flag is turned off when the processor 111 is activated, the mode management unit 202 controls a signal indicating that the main programs 152 and 162 have been updated (hereinafter referred to as a program updated signal) from other processors. To the unit 204.

  When the other processor control unit 204 acquires the update process start signal from the mode management unit 202, the other processor control unit 204 instructs the update mode setting flag to be turned on via the transmission unit 205 and the bus 126 (hereinafter referred to as update mode setting). The update mode setting response signal, which is a response to the update mode setting signal, is received from the processor 117 via the bus 126 and the receiving unit 203. When the other processor control unit 204 receives the update mode setting response signal, the other processor control unit 204 supplies an update mode setting completion signal to the mode management unit 202, and resets the power of the processors 111 and 117 via the transmission unit 205 and the bus 126. An instructing reset signal is transmitted to the processor 117.

  When the other processor control unit 204 acquires the program updated signal from the mode management unit 202, the other processor control unit 204 instructs the processor 117 to turn off the update mode setting flag via the transmission unit 205 and the bus 126 (hereafter, (Referred to as update mode release signal) to the processor 117.

  FIG. 8 is a block diagram illustrating a part of an example of a functional configuration realized by the processor 117 that executes the main program 162. When the processor 117 executes the main program 162, the reception unit 221, the mode management unit 222, the power management unit 223, and the transmission unit 224 are realized.

  The mode management unit 222 receives an update mode setting signal and an update mode release signal from the processor 111 via the bus 126 and the reception unit 221. When the mode management unit 222 receives the update mode setting signal, the mode management unit 222 turns on the update mode setting flag and transmits the update mode setting response signal to the processor 111 via the transmission unit 224 and the bus 126. The value of the update mode setting flag is stored, for example, in a predetermined area of the general-purpose data area 118C of the nonvolatile memory 118, and is set to OFF in the initial state of the receiver 102 at the time of shipment.

  The power management unit 223 receives a reset signal from the processor 111 via the bus 126 and the receiving unit 221. When receiving the reset signal, the power management unit 223 supplies a hardware signal for resetting the power of the processor 111 to the processor 111 and resets the power of the processor 117 via the transmission unit 224 and the bus 126.

  FIG. 9 is a block diagram illustrating an example of a configuration of functions realized by the processor 111 that executes the boot program 151. When the processor 111 executes the boot program 151, a mode management unit 301, a program activation control unit 302, a program update control unit 303, a reception unit 304, another processor control unit 305, an update data transmission control unit 306, and a transmission unit 307 Is realized.

  The mode management unit 301 manages the unupdated flag, similarly to the mode management unit 202 of FIG. When the non-update flag is turned on when the processor 111 is started, the mode management unit 301 controls a signal indicating that the main program 152 or 162 is not updated (hereinafter referred to as a program non-update signal) from other processors. Supplied to the unit 305. The mode management unit 301 supplies a program updated signal to the program activation control unit 302 when the unupdated flag is turned off when the processor 111 is activated.

  The mode management unit 301 acquires an update mode setting completion signal and a signal for notifying that the update of the main program 162 of the processor 117 is completed (hereinafter referred to as another processor update completion signal) from the other processor control unit 305. . When the update mode setting completion signal is acquired, the mode management unit 301 supplies a signal indicating that the main program 152 can be updated (hereinafter referred to as a program update enable signal) to the program update control unit 303. When the other processor update completion signal is acquired, the mode management unit 301 turns off the non-update flag and controls a signal (hereinafter referred to as an unupdate flag release signal) for notifying that the non-update flag is turned off. Supplied to the unit 305.

  The program activation control unit 302 activates the main program 152 when the program updated signal is acquired from the mode management unit 301. Specifically, for example, the program activation control unit 302 sets the value of the program counter of the processor 111 to the start address of the main program area 112B of the nonvolatile memory 112 so that the processor 111 executes the main program 152. Control.

  When the program update control unit 303 acquires a program update enable signal from the mode management unit 301, the program update control unit 303 reads the update data 153 from the update data area 112 </ b> C of the nonvolatile memory 112 as necessary, and the main program included in the update data 153 The update program 152 is decompressed, the decompressed update program is overwritten on the main program area 112B, and the main program 152 is updated. The program update control unit 303 supplies a signal indicating that the update of the main program 152 has been completed (hereinafter referred to as a program update completion signal) to the update data transmission control unit 306.

  When the other processor control unit 305 acquires the program non-update signal from the mode management unit 301, the other processor control unit 305 transmits the update mode setting signal to the processor 117 via the transmission unit 307 and the bus 126, and via the bus 126 and reception unit 304. Then, an update mode setting response signal which is a response to the update mode setting signal is received from the processor 117. The other processor control unit 305 supplies an update mode setting completion signal to the mode management unit 301 when receiving the update mode setting response signal.

  When the other processor control unit 305 acquires the non-update flag release signal from the mode management unit 301, the other processor control unit 305 transmits the update mode release signal to the processor 117 via the transmission unit 307 and the bus 126, and sets the bus 126 and reception unit 304. Then, an update mode release response signal that is a response to the update mode release signal is received from the processor 117. When the other processor control unit 305 receives the update mode release response signal, the other processor control unit 305 transmits a reset signal to the processor 117 via the transmission unit 307 and the bus 126.

  The other processor control unit 305 receives a signal notifying that the update of the main program 162 is completed (hereinafter referred to as an update completion notification signal) from the processor 117 via the bus 126 and the reception unit 304. The other processor control unit 305 acquires from the update data transmission control unit 306 a signal (hereinafter referred to as another processor update unnecessary signal) indicating that the main program 162 of the processor 117 is not required to be updated. The other processor control unit 305 supplies the other processor update completion signal to the mode management unit 301 when the update completion notification signal is received or when the other processor update unnecessary signal is acquired.

  When the update data transmission control unit 306 acquires a program update completion signal from the program update control unit 303, the update data transmission control unit 306 updates the update program of the main program 162 included in the update data 163 stored in the update data area 112D of the nonvolatile memory 112. The version is checked, and a signal notifying the checked version (hereinafter referred to as a version notification signal) is transmitted to the processor 117 via the transmission unit 307 and the bus 126, and a version notification response signal that is a response to the version notification signal is transmitted. The data is received from the processor 117 via the bus 126 and the receiving unit 304.

  When notified by the version notification response signal that the update data 163 needs to be transmitted, the update data transmission control unit 306 reads the update data 163 from the update data area 112D of the nonvolatile memory 112 and reads the update data 163 read out. Is transmitted to the processor 117 via the transmission unit 307 and the bus 126. When notified by the version notification response signal that transmission of the update data 163 is not required, the update data transmission control unit 306 supplies an other processor update unnecessary signal to the other processor control unit 305.

  FIG. 10 is a block diagram illustrating an example of a functional configuration realized by the processor 117 that executes the boot program 161. When the processor 117 executes the boot program 161, a receiving unit 321, a mode management unit 322, a program activation control unit 323, a notification control unit 324, a power management unit 325, a program update control unit 326, and a transmission unit 327 are realized. The

  The mode management unit 322 receives an update mode setting signal from the processor 111 via the bus 126 and the reception unit 321. When the mode management unit 322 receives the update mode setting signal, the mode management unit 322 turns on the update mode setting flag and transmits the update mode setting response signal to the processor 111 via the transmission unit 327 and the bus 126. The mode management unit 322 supplies a signal (hereinafter referred to as an update processing notification start signal) instructing to start notification that the main program 152 or 162 is being updated to the notification control unit 324.

  The mode management unit 322 receives an update mode release signal from the processor 111 via the bus 126 and the reception unit 321. When the mode management unit 322 receives the update mode release signal, the mode management unit 322 turns off the update mode setting flag and informs that the update mode setting flag is turned off (hereinafter referred to as an update mode release completion signal). The update mode cancellation response signal is transmitted to the processor 111 via the transmission unit 327 and the bus 126. If the update mode setting flag is turned off when the processor 117 is started up, the mode management unit 322 sends a signal indicating that the update mode is turned off (hereinafter, an update mode released signal) to the program start control unit 323. To supply.

  The program activation control unit 323 activates the main program 162 when acquiring the update mode canceled signal from the mode management unit 322. Specifically, for example, the program activation control unit 323 sets the value of the program counter of the processor 117 to the start address of the main program area 118B of the nonvolatile memory 118 so that the processor 117 executes the main program 162. Control.

  When the notification control unit 324 acquires the update process notification start signal from the mode management unit 322, the notification control unit 324 performs a notification process for notifying the user that the main program is being updated. For example, the notification control unit 324 controls the video signal processing unit 124 to display an icon or a message indicating that the main program of the receiver 102 is being updated on the display 103 or is updating the main program. An LED (Light Emitting Diode) (not shown) indicating this is turned on. In addition, for example, the notification control unit 324 may notify that the main program is being updated by controlling the audio signal processing unit 125 to output audio from the speaker 104. .

  When the power management unit 325 receives a reset signal from the processor 111 via the bus 126 and the reception unit 321, or acquires an update mode release completion signal from the mode management unit 322, the power management unit 325 uses the transmission unit 327 and the bus 126. Accordingly, a hardware signal for resetting the power supply of the processor 111 is supplied to the processor 111 and the power supply of the processor 117 is reset.

  The program update control unit 326 receives a version notification signal from the processor 111 via the bus 126 and the reception unit 321. The program update control unit 326 compares the version of the update program of the main program 162 notified by the version notification signal with the version of the current main program 162 stored in the main program area 118B of the nonvolatile memory 118. The program update control unit 326 notifies the version via the transmission unit 327 and the bus 126 that the update data 163 needs to be transmitted when the version of the update program is newer than the current main program 162 version. A response signal is transmitted to the processor 111, and if the version of the update program is not newer than the current version of the main program 162, a version notification response signal indicating that transmission of the update data 163 is unnecessary is transmitted to the processor 111.

  The program update control unit 326 receives the update data 163 from the processor 111 via the bus 126 and the reception unit 321, decompresses the update program of the main program 162 included in the received update data 163, and stores the decompressed update program The main program area 118B is overwritten and the main program 162 is updated. The program update control unit 326 transmits an update completion notification signal to the processor 111 via the transmission unit 327 and the bus 126.

  Next, processing executed by the receiver 102 will be described with reference to FIGS. 11 to 19. 11 to 18 are flowcharts for explaining the processing of the processor 111 or 117 of the receiver 102, and FIG. 19 is the transmission / reception between the processor 111 and the processor 117 in the main processing of the flowcharts of FIGS. It is a sequence diagram which shows the flow of the signal and data which are performed.

  In the sequence diagram of FIG. 19, the numbers beginning with S described on the signal lines or processing lines correspond to the process step numbers of the flowcharts of FIGS. In the sequence diagram of FIG. 19, a period indicated by a rectangle with a slanting line drawn on the left side in the figure indicates a period during which the processor 111 is executing the main program 152, and the interior is A period indicated by a rectangle with a diagonal line is a period during which the processor 111 executes the boot program 151. Furthermore, a period indicated by a rectangle with a right-sloping diagonal line drawn on the right side in the figure indicates a period during which the processor 117 is executing the main program 162, and a rectangle with a left-sloping diagonal line drawn therein. The period indicated by “” indicates the period during which the processor 117 is executing the boot program 161.

  First, the startup process of the processor 111 will be described with reference to the flowchart of FIG. 11 and the sequence diagram of FIG. Note that this processing is started when the processor 111 is started up when the power of the receiver 102 is turned on or the power of the processor 111 is reset. When starting up, the processor 111 first executes the boot program 151 stored in the boot program area 112A of the nonvolatile memory 112.

  In step S101, the mode management unit 301 in FIG. 9 determines whether or not the unupdated flag is off. If it is determined that the unupdated flag is off, that is, if the main program 152 executed by the processor 111 and the main program 162 executed by the processor 117 have been updated, the process proceeds to step S102.

  In step S <b> 102, the processor 111 activates the main program 152. Specifically, the mode management unit 301 supplies a program updated signal to the program activation control unit 302. For example, the program activation control unit 302 sets the value of the program counter of the processor 111 as the start address of the main program area 112B of the nonvolatile memory 112. As a result, the processor 111 starts executing the main program 152.

  In step S103, the mode management unit 202 in FIG. 7 supplies the program updated signal to the other processor control unit 204, and the other processor control unit 204 sends the update mode release signal to the processor via the transmission unit 205 and the bus 126. 117, and the activation process ends. The processor 117 receives the update mode release signal in step S123 or S124 of FIG.

  Thereafter, the processor 111 executes various processes of the receiver 102 according to the main program 152.

  If it is determined in step S101 that the unupdated flag is on, that is, if at least one of the main program 152 or the main program 162 has not been updated, the process proceeds to step S104.

  In step S104, the processor 111 continues to perform a program update process according to the boot program 151, and the startup process ends. Details of the program update process will be described later with reference to FIGS. 15 and 16, and this process updates the main program 152 stored in the main program area 112 </ b> B of the nonvolatile memory 112 as necessary. .

  In the above description, the processor 111 starts the boot program 151 and then starts the main program 152 according to the boot program 151. For example, when the processor 111 is started, the unupdate flag is set by hardware processing. Based on this value, the start address of the boot program area 112A or the start address of the main program area 112B may be set in the program counter of the processor 111 to switch the program to be started by the processor 111.

  Next, the startup process of the processor 117 will be described with reference to the flowchart of FIG. 12 and the sequence diagram of FIG. Note that this processing is started when the processor 117 is started by turning on the power of the receiver 102 or resetting the power of the processor 117. When starting up, the processor 111 first executes the boot program 161 stored in the boot program area 118A of the nonvolatile memory 118.

  In step S121, the mode management unit 322 in FIG. 10 determines whether the update mode setting flag is off. If it is determined that the update mode setting flag is off, the process proceeds to step S122.

  In step S122, the processor 117 activates the main program 162. Specifically, the mode management unit 322 supplies an update mode release completed signal to the program activation control unit 323. For example, the program activation control unit 323 sets the value of the program counter of the processor 117 as the top address of the main program area 118B of the nonvolatile memory 118. As a result, the processor 117 starts executing the main program 162.

  In step S123, the mode management unit 222 in FIG. 8 receives the update mode release signal transmitted from the processor 111 in step S103 in FIG. 11 via the bus 126 and the reception unit 221, and the activation process ends. At this time, the update mode setting flag is already turned off, and the mode management unit 222 does not perform processing corresponding to reception of the update mode release signal.

  Thereafter, the processor 117 executes various processes of the receiver 102 according to the main program 162.

  If it is determined in step S121 that the update mode setting flag is on, the process proceeds to step S124.

  In step S124, the mode management unit 322 determines whether or not an update mode release signal has been received. If it is determined that the update mode cancel signal has not been received, that is, if it is determined in step S101 in FIG. 11 that the non-update flag is on and the processor 111 has not transmitted the update mode cancel signal, Advances to step S125.

  In step S125, the processor 117 continues the program update process based on the boot program 161, and the start process ends. Details of the program update process will be described later with reference to FIGS. 17 and 18, and the main program 162 stored in the main program area 118 </ b> B of the nonvolatile memory 118 is updated as necessary by this process. .

  If it is determined in step S124 that an update mode cancellation signal has been received, that is, it is determined in step S101 in FIG. 11 that the unupdated flag is off, and the update mode cancellation signal transmitted from the processor 111 in step S103. Is received by the mode management unit 322 via the bus 126 and the reception unit 321, the process proceeds to step S 126. In step S 126, the mode management unit 322 turns off the update mode setting flag and completes the update mode release. The signal is supplied to the power management unit 325. From this state, the processor 111 unupdated flag is off, and the processor 117 update mode setting flag is on, so that the processor 111 unupdated flag is off and the processor 117 update mode setting flag is off. Thus, the inconsistency between the states of the processor 111 and the processor 117 is resolved.

  In step S127, the power management unit 325 resets the power of the processor 111 and the processor 117, and the activation process ends. Specifically, the power management unit 325 supplies a hardware signal for resetting the power of the processor 111 to the processor 111 via the transmission unit 327 and the bus 126. As a result, the power of the processor 111 is reset, and the processor 111 restarts and then performs the startup process described above with reference to FIG. In addition, the power management unit 325 resets the power of the processor 117, and the processor 117 restarts and then performs the startup process described above again.

  In the above description, the processor 117 starts the boot program 161 and then starts the main program 162 according to the boot program 161. For example, when the processor 117 is started, the update mode setting is performed by hardware processing. Based on the value of the flag, the start address of the boot program area 118A or the start address of the main program area 118B may be set in the program counter of the processor 117, and the program to be started by the processor 117 may be switched.

  Next, program update preparation processing executed by the processor 111 that executes the main program 152 will be described with reference to the flowchart of FIG. 13 and the sequence diagram of FIG. This process is periodically performed at predetermined intervals, for example, after the startup process described above with reference to FIG. 11 is performed and before the power of the receiver 102 (processor 111) is turned off. .

  The front end unit 120 in FIG. 5 extracts a broadcast signal corresponding to a user's channel selection or an instruction from the processor 111 from a broadcast wave received via the antenna 101, demodulates it, and generates a transport stream. , Supplied to the descrambler 121. The descrambler 121 appropriately scrambles the transport stream supplied from the front end unit 120 and supplies the descrambler 122 to the demultiplexer 122. The demultiplexer 122 separates the multiplexed transport stream into a stream such as video or audio data or section data. When the section data includes download notification information based on predetermined parameters supplied from the update data reception control unit 201 via the bus 126, the demultiplexer 122 displays the download notification information via the bus 126. 7 to the update data reception control unit 201.

  In step S141, the update data reception control unit 201 determines whether download notification information has been received. If it is determined that the download notification information is received, that is, if the download notification information is supplied from the demultiplexer 122 via the bus 126, the process proceeds to step S142.

  In step S142, the update data reception control unit 201 determines whether it is possible to receive a newer version of the main program than the current main program. Specifically, the update data reception control unit 201 includes the integrated version of the update program of the main program 152 and the main program 162 included in the download notification information received in the process of step S141, and the main program area 112B of the nonvolatile memory 112. Are compared with the integrated version of the current main program 162 stored in the main program area 118B of the nonvolatile memory 118, and the integrated version of the update program is compared with the current main program. If it is newer than the integrated version, it is determined that a newer version of the main program than the current main program can be received, and the process proceeds to step S143.

  In step S143, the update data reception control unit 201 stores the download notification information acquired in the process of step S141 in the general-purpose data area 112E of the nonvolatile memory 112.

  If it is determined in step S142 that a newer version of the main program than the current main program cannot be received, that is, if the integrated version of the update program is not newer than the integrated version of the current main program, the process of step S143 is skipped. Then, the process proceeds to step S144.

  If it is determined in step S141 that the download notification information has not been received, the processes in steps S142 and S143 are skipped, and the process proceeds to step S144.

  In step S144, the update data reception control unit 201 determines the multiple update data based on the download notification information stored in the general-purpose data area 112E of the nonvolatile memory 112 in the process of step S143 of the previous program update preparation process. It is determined whether or not the distribution time has come. If it is determined that the distribution time of the multiple update data has arrived, the process proceeds to step S145.

  In step S145, the update data reception control unit 201 downloads multiple update data. Specifically, the update data reception control unit 201 controls the front end unit 120 via the bus 126, and the service (channel) indicated in the download notification information from the broadcast wave received via the antenna 101. Tune in. The front end unit 120 extracts a broadcast signal corresponding to the channel selection of the update data reception control unit 201 from a broadcast wave received via the antenna 101, demodulates it, generates a transport stream, and generates a descrambler 121. Output to. The descrambler 121 appropriately scrambles the transport stream input from the front end unit 120 and outputs the descrambler 121 to the demultiplexer 122.

  The demultiplexer 122 separates the multiplexed transport stream into a stream such as video or audio data or section data. The demultiplexer 122 transmits the multiple update data included in the separated section data based on the predetermined parameter supplied from the update data reception control unit 201 via the bus 126 via the bus 126 to the update data reception control unit. It supplies to 201. The update data reception control unit 201 stores the update data 153 for the processor 111 included in the multiple update data in the update data area 112C of the nonvolatile memory 112, and updates the update data 163 for the processor 117 included in the multiple update data. The data is stored in the data area 112D.

  The update data reception control unit 201 supplies the multiple update data acquisition signal to the mode management unit 202, and erases the download notification information stored in the general-purpose data area 112E of the nonvolatile memory 112. The mode management unit 202 sets conditions for starting the update of the main program 152 or 162. For example, the mode management unit 202 sets the update processing of the main program 152 or 162 to start at a predetermined time such as midnight when the frequency of use of the receiver 102 is low.

  If it is determined in step S144 that the download notification information is not stored in the general-purpose data area 112E of the non-volatile memory 112, the process of step S145 is skipped. The process proceeds to step S146.

  In step S146, the mode management unit 202 determines whether or not the main program can be updated. Specifically, for example, when the receiver 102 is in an unused standby state at the time set to start the update process of the main program 152 or 162 in the process of step S145, the mode management unit 202 Then, it is determined that the main program can be updated, and the process proceeds to step S147.

  In step S147, the mode management unit 202 supplies an update processing start signal to the other processor control unit 204, and the other processor control unit 204 transmits an update mode setting signal to the processor 117 via the transmission unit 205 and the bus 126. To do. The processor 117 receives an update mode setting signal in step S161 of FIG. 14 described later, and transmits an update mode setting response signal in step S163.

  In step S <b> 148, the other processor control unit 204 receives an update mode setting response signal from the processor 117 via the bus 126 and the reception unit 203, and supplies an update mode setting completion signal to the mode management unit 202.

  In step S149, the mode management unit 202 turns on the unupdated flag and supplies an unupdated flag setting completion signal to the other processor control unit 204.

  In step S150, the other processor control unit 204 transmits a reset signal to the processor 117 via the transmission unit 205 and the bus 126. The processor 117 receives a reset signal in step S164 of FIG. 14 described later, and supplies a hardware signal for resetting the power of the processor 111 to the processor 111 in step S165. The update preparation process ends. After restarting, the processor 111 performs the startup process described above with reference to FIG.

  Next, with reference to the flowchart of FIG. 14 and the sequence diagram of FIG. 19, the update mode setting signal reception process executed by the processor 117 that executes the main program 162 corresponding to the program update preparation process of FIG. To do.

  In step S161, the mode management unit 222 in FIG. 8 receives the update mode setting signal transmitted from the processor 111 in step S147 in FIG. 13 via the bus 126 and the reception unit 221, and in step S162. The update mode setting flag is turned on, and in step S163, an update mode setting response signal is transmitted to the processor 111 via the transmission unit 224 and the bus 126.

  In step S164, the power management unit 223 receives the reset signal transmitted from the processor 111 in the process of step S150 of FIG. 13 via the bus 126 and the reception unit 221.

  In step S165, the power management unit 223 resets the power of the processors 111 and 117, and the update mode setting signal reception process ends. Specifically, the power management unit 223 transmits a hardware signal for resetting the power of the processor 111 to the processor 111 via the transmission unit 224 and the bus 126. As a result, the power of the processor 111 is reset, and the processor 111 restarts and then performs the startup process described above with reference to FIG. In addition, the power management unit 223 resets the power of the processor 117. After restarting, the processor 117 performs the startup process described above with reference to FIG.

  In the above, before the processor 111 turns on the unupdated flag, the processor 117 turns on the update mode setting flag in step S162, and then the processor 111 turns on the unupdated flag in step S149. I made it. This is because, for example, a failure is found in the update program before the update mode setting flag is turned on in step S162 after it is determined in step S146 that the main program can be updated. The update program is invalidated and the multiple update data stored in the nonvolatile memory 112 may be erased. In this case, the unupdate flag of the processor 111 is turned on even though there is no multiple update data. In addition, the update mode setting flag of the processor 117 is prevented from being turned on.

  If this need not be taken into consideration, the update mode setting flag of the processor 117 may be turned on after the unupdate flag of the processor 111 is turned on. When the non-update flag is turned on, the processor 111 controls the multiple update data stored in the nonvolatile memory 112 so as not to be erased.

  Next, details of the program update process in step S104 of FIG. 11 will be described with reference to the flowcharts of FIGS. 15 and 16 and the sequence diagram of FIG.

  In step S201, the mode management unit 301 in FIG. 9 supplies a program non-update signal to the other processor control unit 305, and the other processor control unit 305 sends the update mode setting signal to the processor via the transmission unit 307 and the bus 126. 117. The processor 117 receives an update mode setting signal in step S251 of FIG. 17 described later, and transmits an update mode setting response signal in step S253.

  In step S <b> 202, the other processor control unit 305 receives an update mode setting response signal from the processor 117 via the bus 126 and the reception unit 304. The other processor control unit 305 supplies an update mode setting completion signal to the mode management unit 301, and the mode management unit 301 supplies a program update enable signal to the program update control unit 303.

  In step S203, the program update control unit 303 determines whether the main program 152 needs to be updated. Specifically, the program update control unit 303 is included in the version of the current main program 152 stored in the main program area 112B of the nonvolatile memory 112 and the update data 153 stored in the update data area 112C. The version of the update program of the main program 152 is compared, and if the version of the update program is newer than the current version of the main program 152, it is determined that the update of the main program 152 is necessary, and the process proceeds to step S204. Proceed to

  In step S204, the program update control unit 303 updates the main program 152. Specifically, the program update control unit 303 reads the update data 153 from the update data area 112C of the nonvolatile memory 112, decompresses the update program of the main program 152 included in the update data 153, and stores the decompressed update program as the main The program area 112B is overwritten and the main program 152 is updated. At this time, the program update control unit 303 may update all of the main program 152 or may update only the updated module in the main program 152.

  If it is determined in step S203 that the update of the main program 152 is unnecessary, that is, if the version of the update program of the main program 152 is not newer than the version of the current main program 152, the process of step S204 is skipped, and the main program The process advances to step S205 without updating 152. As a result, the main program 152 is prevented from being unnecessarily updated (written to the nonvolatile memory 112), the life of the nonvolatile memory 112 having a finite number of writes can be extended, and program update processing can be performed. Time is shortened.

  In step S205, the update data transmission control unit 306 transmits a version notification signal. Specifically, the program update control unit 303 supplies a program update completion signal to the update data transmission control unit 306 regardless of whether or not the main program 152 has been updated in the process of step S204. The update data transmission control unit 306 checks the version of the update program of the main program 162 included in the update data 163 stored in the update data area 112D of the nonvolatile memory 112, and sends a version notification signal for notifying the checked version, The data is transmitted to the processor 117 via the transmission unit 307 and the bus 126. The processor 117 receives a version notification signal in step S254 of FIG. 17 described later, and transmits a version notification response signal in step S257 or S261.

  In step S <b> 206, the update data transmission control unit 306 receives a version notification response signal from the processor 117 via the bus 126 and the reception unit 304.

  In step S207, the update data transmission control unit 306 determines whether or not the processor 117 has notified that the main program 162 needs to be updated, based on the version notification signal received in step S206. When it is determined that the main program 162 needs to be updated, that is, the processor 117 determines that the main program 162 needs to be updated in step S256 of FIG. 17 to be described later, and in step S257, When the version notification response signal notifying that the main program 162 needs to be updated is transmitted, the process proceeds to step S208.

  In step S208, the update data transmission control unit 306 reads the update data 163 from the update data area 112D of the nonvolatile memory 112, and transmits the read update data 163 to the processor 117 via the transmission unit 307 and the bus 126. . At this time, for example, an error correction code may be transmitted before or after transmission of update data, or an error correction code may be included in the update data to improve communication reliability between processors. .

  The processor 117 receives the update data 163 in step S258 of FIG. 17 described later, updates the main program 162 in step S259, and then transmits an update completion notification signal in step S260.

  In step S209, the other processor control unit 305 receives the update completion notification signal from the processor 117 via the bus 126 and the reception unit 304, and supplies the other processor update completion signal to the mode management unit 301. Thereafter, the process proceeds to step S211.

  If it is determined in step S207 that the update of the main program 162 has been notified, that is, the processor 117 determines that the update of the main program 162 is unnecessary in step S256 of FIG. In step S261, when a version notification response signal notifying that updating of the main program 162 is unnecessary is transmitted, the process proceeds to step S210.

  In step S <b> 210, the update data transmission control unit 306 supplies the other processor update unnecessary signal to the other processor control unit 305, and the other processor control unit 305 supplies the other processor update completion signal to the mode management unit 301. Thereafter, the update data 163 is not transmitted to the processor 117, and the process proceeds to step S211.

  In step S <b> 211, the mode management unit 301 turns off the unupdated flag and supplies an unupdated flag release signal to the other processor control unit 305.

  In step S <b> 212, the other processor control unit 305 transmits an update mode release signal to the processor 117 via the transmission unit 307 and the bus 126. The processor 117 receives the update mode release signal in step S262 of FIG. 18 described later, turns off the update mode setting flag in step S263, and transmits an update mode release response signal in step S264.

  In step S213, the other processor control unit 305 receives the update mode release response signal from the processor 117 via the bus 126 and the reception unit 304. In step S214, the other processor control unit 305 outputs a reset signal via the transmission unit 307 and the bus 126. Transmit to processor 117. The processor 117 receives a reset signal in step S265 of FIG. 18 to be described later, and in step S266, supplies a hardware signal for resetting the power of the processor 111 to the processor 111, the power of the processor 111 is reset, and the program The update process ends. After restarting, the processor 111 performs the startup process described above with reference to FIG.

  Next, details of the program update process in step S125 of FIG. 12 will be described with reference to the flowcharts of FIGS. 17 and 18 and the sequence diagram of FIG.

  In step S251, the mode management unit 322 in FIG. 10 receives the update mode setting signal transmitted from the processor 111 in the process in step S201 in FIG. 15 via the bus 126 and the reception unit 321.

  In step S252, the processor 117 performs an update mode setting process. Specifically, first, the mode management unit 322 turns on the update mode setting flag and supplies an update process notification start signal to the notification control unit 324. The notification control unit 324 controls the video signal processing unit 124 to display an icon or a message indicating that the program of the receiver 102 is being updated on the display 103 or to indicate that the main program is being updated. Turn on an LED (Light Emitting Diode) (not shown).

  In step S <b> 253, the mode management unit 322 transmits an update mode setting response signal to the processor 111 via the transmission unit 327 and the bus 126.

  In step S254, the program update control unit 326 receives the version notification signal transmitted from the processor 111 in step S205 in FIG. 15 via the bus 126 and the reception unit 321, and in step S255, the nonvolatile memory 118 is received. The version of the current main program 162 stored in the main program area 118B is confirmed.

  In step S256, the program update control unit 326 determines whether or not the main program 162 needs to be updated. Specifically, the program update control unit 326 updates the version of the main program 162 notified by the version notification signal received in step S254 and the version of the current main program 162 confirmed in step S255. If the version of the update program is newer than the current version of the main program 162, it is determined that the main program 162 needs to be updated, and the process proceeds to step S257.

  In step S257, the program update control unit 326 transmits a version notification response signal indicating that the main program 162 needs to be updated to the processor 111 via the transmission unit 327 and the bus 126, and in step S258, the bus 126 The update data 163 transmitted from the processor 111 in the process of step S208 of FIG. 15 is received via the reception unit 321.

  In step S259, the program update control unit 326 updates the main program 162. Specifically, the program update control unit 326 decompresses the update program of the main program 162 included in the update data 163, overwrites the decompressed update program in the main program area 118B, and updates the main program 162. At this time, the program update control unit 326 may update all of the main program 162 or may update only the updated module in the main program 162.

  In step S260, the program update control unit 326 transmits an update completion notification signal to the processor 111 via the transmission unit 327 and the bus 126, and the process proceeds to step S262.

  If it is determined in step S256 that the main program 162 does not need to be updated, that is, if the version of the update program of the main program 162 is not newer than the current version of the main program 162, the process proceeds to step S261.

  In step S <b> 261, the program update control unit 326 transmits a version notification response signal indicating that the update of the main program 162 is unnecessary to the processor 111 via the transmission unit 327 and the bus 126. Thereafter, the main program 162 is not updated, and the process proceeds to step S262. This prevents the main program 162 from being unnecessarily updated (written to the non-volatile memory 118), can extend the life of the non-volatile memory 118 having a finite number of times of writing, and can improve the program update process. Time is shortened.

  In step S262, the mode management unit 322 receives the update mode release signal transmitted from the processor 111 in the process of step S212 in FIG. 16 via the bus 126 and the reception unit 321, and in step S263, the update mode setting flag. In step S264, an update mode release response signal is transmitted to the processor 111 via the transmission unit 327 and the bus 126.

  In step S265, the power management unit 325 receives the reset signal transmitted from the processor 111 in the process of step S214 of FIG. 16 via the bus 126 and the reception unit 321.

  In step S266, the power management unit 325 resets the power sources of the processors 111 and 117, similar to the process in step S127 of FIG. 12 described above, and the program update process ends. As a result, the power sources of the processors 111 and 117 are reset. The processor 111 restarts and then performs the startup process described above with reference to FIG. 11. The processor 117 restarts and then refers to FIG. The activation process described above is performed.

  In the sequence diagram of FIG. 19, the processor 111 and 117 are not connected to the processors 111 and 117 due to a power failure or the like after the unupdated flag of the processor 111 is turned on in step S149 until the unupdated flag is turned off in step S211. When the supply of power is cut off, the non-update flag of the processor 111 is turned on, and the update mode setting flag of the processor 117 is turned on. After the supply of power to the processors 111 and 117 is restarted, step S201 is performed. Since the subsequent program update process is executed, the main programs 152 and 162 are surely updated.

  In step S211, the supply of power to the processors 111 and 117 is interrupted after the unupdated flag of the processor 111 is turned off until the update mode setting flag of the processor 117 is turned off in step S263. In such a case, the non-update flag of the processor 111 is turned off, and the update mode setting flag of the processor 117 is turned on. After the supply of power to the processors 111 and 117 is resumed, the processor 111 executes the main program 152. On the other hand, when the processor 117 tries to perform the program update process according to the boot program 161, the state mismatch between the processors 111 and 117 occurs.

  However, in step S103, an update mode release signal is transmitted from the processor 111 to the processor 117, and the processor 117 receives the update mode release signal in step S124 of FIG. 12, which is not shown in FIG. 19, and step S126. , The update mode setting flag is turned off. In step S127, the power sources of the processors 111 and 117 are reset, and after the restart, the processors 111 and 117 execute the updated main program, and the inconsistency between the states of the processors 111 and 117 is resolved. The

  Furthermore, in step S162, the supply of power to the processors 111 and 117 is performed after the update mode setting flag of the processor 117 is turned on until the non-update flag of the processor 111 is turned on in step S149. Similarly, in the case of being interrupted, after the unupdate flag of the processor 111 is turned off and the update mode setting flag of the processor 117 is turned on, and the supply of power to the processors 111 and 117 is resumed, the processor 111 While the main program 152 is executed, the processor 117 tries to perform the program update process according to the boot program 161, and the state mismatch between the processors 111 and 117 occurs.

  Also in this case, as in the case described above, an update mode release signal is transmitted from the processor 111 to the processor 117, and the update mode setting flag of the processor 117 is turned off. Then, the power sources of the processors 111 and 117 are reset, and both the processors 111 and 117 execute the main program before the update after restarting, and the inconsistency between the states of the processors 111 and 117 is resolved. Then, when the predetermined time set in the process of step S145 in FIG. 13 is reached, the program update process is surely performed.

  As described above, the main program 152 stored in the nonvolatile memory 112 and the main program 162 stored in the nonvolatile memory 118 can be updated at once and reliably. Further, since the main programs 152 and 162 can be reliably updated, there is no need to store the previous version of the main program in the nonvolatile memory as in the conventional receiver shown in FIG.

  Further, the boot program 151 is a small-scale program with limited functions, and the function necessary only for the boot program 151 is deleted from the main program 152 to compare the case where the boot program 151 is provided with the case where the boot program 151 is not provided. Thus, the total capacity of programs executed by the processor 111 is almost unchanged. Furthermore, the update data 153 is data obtained by compressing the main program 152, and the capacity of the update data 153 is smaller than the capacity of the main program 152. Further, since the main program 152 does not include a function necessary only for the boot program 151, the capacity of the update data 153 is smaller than when the boot program 151 is not provided. The same applies to the boot program 161, the main program 162, and the update data 163.

  Therefore, when the configuration of the program and data stored in the nonvolatile memory of the receiver is the configuration of the present invention shown in FIG. 6, each nonvolatile memory as in the conventional receiver shown in FIG. The total capacity of the program area including the update data storage area of the non-volatile memory can be reduced as compared with the case where the old and new programs are stored. Furthermore, since the boot programs 151 and 161 basically do not need to be updated, the capacity of the program area of the nonvolatile memory can be further reduced by storing the boot programs 151 and 161 in a ROM (not shown). Can do.

  As described above, the first update data including data for updating the first information processing program or the second update data including data for updating the second information processing program is acquired. The first information processing program stored in the first storage means is updated by the first computer based on the first update data, and the second information is stored in the first storage means. When the update data is transmitted, and the second computer updates the second information processing program stored in the second storage unit based on the second update data, the computer The program to be executed can be updated. In addition, a program executed by different computers stored in two or more non-volatile memories can be updated at once and reliably with a non-volatile memory having a smaller capacity.

  In the above description, an example of a receiver provided with two sets of processors and a non-volatile memory has been described. However, the present invention can also be applied to a receiver provided with three or more sets of processors and a non-volatile memory. Can do. In this case, for example, in the sequence diagram of FIG. 19, the processes from step S201 to S260 are repeated by the number of processors other than the processor 111. When the main program of all the processors is updated, the processor 111 transmits an update mode release signal to all other processors and receives an update mode release response signal from all other processors in step S211. Then, in step S213, this can be realized by transmitting a reset signal and resetting the power supplies of all the processors. Note that as the number of processors increases and the number of nonvolatile memories increases, the effect of reducing the total capacity of the program areas of all nonvolatile memories increases.

  The present invention can be applied not only to a digital television broadcast receiver but also to an information processing apparatus having two or more processors.

  Furthermore, in the above description, an example in which multiple update data is acquired via a broadcast wave transmitted from a broadcast station has been described. However, multiple update data can be acquired from a server connected to the network via the network interface 115. The multiple update data may be acquired from the recording medium 131 by mounting the recording medium 131 on which the multiple update data is recorded in the drive 116.

  Further, after updating the main programs 152 and 162, the power of the processors 111 and 117 is reset and restarted in step S266 of FIG. 18, but the power of the processors 111 and 117 is not reset. The processors 111 and 117 may execute the update program after the internal states of the processors 111 and 117 are initialized.

  Further, the power supply of the processors 111 and 117 is reset by the processor 117. However, the processor 111 or a processor other than the processors 111 and 117 may perform the reset.

  In addition, after the processor 117 receives the update mode cancellation signal in step S262 of FIG. 18, in step S264, instead of transmitting the update mode cancellation response signal, the processor 117 performs a process of resetting the power of the processor in step S266. It may be. Thereby, the processing of the processor 111 in steps S213 and S214 of FIG. 16 and the processing of the processor 117 in steps S264 and S265 of FIG. 18, that is, transmission / reception of an update mode release response signal performed between the processor 111 and the processor 117 In addition, the process of transmitting and receiving the reset signal can be omitted.

  Furthermore, the processor 117 does not manage the update mode setting flag, and the processor 111 transmits the value of the unupdated flag to the processor 117 as necessary, or the processor 117 inquires the processor 111 about the value of the unupdated flag. You may make it do.

  15, instead of notifying the processor 111 of the update program version of the main program 162 included in the update data 163 from the processor 111 to the processor 117, the processor 117 stores the update program in the nonvolatile memory 118. The version of the main program 162 may be notified, and the processor 111 may determine whether the main program 162 of the processor 117 needs to be updated.

  The series of processes described above can be executed by hardware or can be executed by software.

  When the series of processes is executed by software, the boot program 151 or 161 is provided via the network interface 115 via the network interface 115 in addition to providing the boot program 151 or 152 in a state of being previously incorporated in the nonvolatile memory 112 or 118. The recording medium 131 is received from a server connected to the computer, the boot program 151 or 161 is recorded, the recording medium 131 is mounted on the drive 116, and the boot program 151 or 161 is read from the recording medium 131 It is also possible to obtain the boot program 151 or 161 and install it in the nonvolatile memory 112 or 118.

  In the present specification, the step of describing the program stored in the program storage medium is not limited to the processing performed in chronological order according to the described order, but is not necessarily performed in chronological order. Or the process performed separately is also included.

It is a figure explaining the example of a structure of the program and data which are memorize | stored in the non-volatile memory of the conventional receiver. It is a flowchart explaining the example of the update process of the program of the conventional receiver. It is a figure explaining another example of a structure of the program and data memorize | stored in the non-volatile memory of the conventional receiver. It is a flowchart explaining another example of the update process of the program of the conventional receiver. It is a block diagram which shows the structure of one Embodiment of the receiver to which this invention is applied. It is a figure explaining an example of a structure of the program and data memorize | stored in the non-volatile memory of the receiver of FIG. FIG. 6 is a diagram illustrating an example of a part of a functional configuration realized by a processor of the receiver in FIG. 5 executing a main program. It is a figure which shows the example of a part of structure of the function implement | achieved when another processor of the receiver of FIG. 5 executes another main program. FIG. 6 is a diagram illustrating an example of a configuration of functions realized by a processor of the receiver in FIG. 5 executing a boot program. It is a figure which shows the example of a structure of the function implement | achieved when another processor of the receiver of FIG. 5 performs another boot program. 6 is a flowchart for explaining an example of activation processing of a processor of the receiver of FIG. 5. 6 is a flowchart for explaining an example of a startup process of another processor of the receiver of FIG. 5. 6 is a flowchart illustrating an example of a program update preparation process of a processor of the receiver of FIG. It is a flowchart explaining the example of the update mode setting signal reception process of another processor of the receiver of FIG. 5 performed corresponding to the program update process of FIG. It is a flowchart explaining the detail of the program update process of step S104 of FIG. It is a flowchart explaining the detail of the program update process of step S104 of FIG. It is a flowchart explaining the detail of the program update process of step S125 of FIG. It is a flowchart explaining the detail of the program update process of step S125 of FIG. FIG. 6 is a sequence diagram illustrating an example of a flow of signals and data transmitted / received between two processors of the receiver of FIG. 5.

Explanation of symbols

  102 receiver, 111 processor, 112 non-volatile memory, 112A boot program area, 112B main program area, 112C update data area, 112D update data area, 115 network interface, 116 drive, 117 processor, 118 non-volatile memory, 118A boot program Area, 118B main program area, 120 front end section, 121 descrambler, 122 demultiplexer, 124 video signal processing section, 131 recording medium, 151 boot program, 152 main program, 153 update data, 161 boot program, 162 main program, 163 update data, 201 update data reception control unit, 202 mode management 204, other processor control unit, 222 mode management unit, 223 power management unit, 301 mode management unit, 302 program start control unit, 303 program update control unit, 305 other processor control unit, 306 update data transmission control unit, 322 mode management Section, 323 program start control section, 324 notification control section, 325 power management section, 326 program update control section

Claims (12)

A first computer, a second computer, a nonvolatile first storage means for storing a first information processing program executed by the first computer, and a second executed by the second computer In an information processing apparatus including a nonvolatile second storage unit that stores an information processing program,
Obtaining first update data including data for updating the first information processing program or second update data including data for updating the second information processing program; Acquisition means to be stored in the first storage means;
Based on the first update data, the first information processing program stored in the first storage means is realized by the first computer that executes the first update processing program. First updating means for updating;
Transmitting means for transmitting the second update data to the second computer, realized by the first computer executing the first update processing program;
Based on the second update data transmitted by the transmission means, realized by the second computer that executes the second update processing program, the data stored in the second storage means An information processing apparatus comprising: a second updating unit that updates the second information processing program. Set own state to an update state for updating the first information processing program or the second information processing program realized by the first computer that executes the first information processing program Setting means;
When the own state is set to the update state, the first computer is controlled to execute the first update processing program, and the own state is not set to the update state. A first execution control means for controlling execution of the program of the first computer so that the first computer executes the first information processing program;
First notification means for notifying the second computer of the status of the computer, realized by the first computer that executes the first information processing program;
Second notification means for notifying the second computer of the status of the computer, realized by the first computer executing the first update processing program;
When the state notified by the first notification unit or the second notification unit is set to the update state, the second computer executes the second update processing program. Control the execution of the program of the second computer so that the second computer executes the second information processing program when the own state is not set to the update state. The information processing apparatus according to claim 1, further comprising: a second execution control unit. The first computer executes the first update processing program at startup,
The first execution control means is realized by the first computer that executes the first update processing program, and when the state is not set to the update state, the first computer The information processing apparatus according to claim 2, wherein execution of the program of the first computer is controlled so as to execute the first information processing program. The second computer executes the second update processing program at startup,
The second execution control means is realized by the second computer that executes the second update processing program, and when the own state is not set to the update state, the second computer The information processing apparatus according to claim 2, wherein execution of the program of the second computer is controlled to execute the second information processing program. The information processing apparatus according to claim 2, further comprising notification control means for controlling notification so as to notify a user that the user's own state is set to the update state. The transmission means updates the version of the second information processing program to a version newer than the version of the second information processing program stored in the second storage means by the second update data. 2. The information processing apparatus according to claim 1, wherein the second update data is transmitted to the second computer only when it is performed. The information according to claim 1, wherein the first update processing program is stored in the first storage unit, and the second update processing program is stored in the second storage unit. Processing equipment. A first computer, a second computer, a nonvolatile first storage means for storing a first information processing program executed by the first computer, and a second executed by the second computer In an information processing method of an information processing apparatus including a nonvolatile second storage unit that stores an information processing program,
Obtaining first update data including data for updating the first information processing program or second update data including data for updating the second information processing program; An acquisition step of storing in the first storage means;
Based on the first update data, the first information processing program stored in the first storage means is realized by the first computer that executes the first update processing program. A first update step to update;
A transmission step of transmitting the second update data to the second computer, realized by the first computer executing the first update processing program;
Based on the second update data transmitted by the process of the transmission step, realized by the second computer executing the second update processing program, stored in the second storage means A second updating step of updating the second information processing program. The information processing method comprising: A first computer, a second computer, a nonvolatile first storage means for storing a first information processing program executed by the first computer, and a second executed by the second computer A program for the first computer of an information processing apparatus comprising a nonvolatile second storage means for storing an information processing program,
The first information stored in the first storage means based on the first update data stored in the first storage means including data for updating the first information processing program. An update step for updating the information processing program;
The second information stored in the second storage means of the second update data stored in the first storage means including data for updating the second information processing program And a transmission control step for controlling transmission to the second computer for updating the processing program. A recording medium on which a computer-readable program is recorded. A first computer, a second computer, a nonvolatile first storage means for storing a first information processing program executed by the first computer, and a second executed by the second computer A program for the second computer of an information processing apparatus comprising a nonvolatile second storage means for storing an information processing program,
The first information stored in the first storage means based on the first update data stored in the first storage means including data for updating the first information processing program. Data for updating the second information processing program read from the first storage means by the first computer for updating the information processing program and transmitted by the first computer is included. An update step of updating the second information processing program stored in the second storage means based on the second update data is recorded, and a computer-readable program is recorded. Recording medium. A first computer, a second computer, a nonvolatile first storage means for storing a first information processing program executed by the first computer, and a second executed by the second computer In a program for causing the first computer of an information processing apparatus comprising a nonvolatile second storage means for storing an information processing program to perform information processing,
The first information stored in the first storage means based on the first update data stored in the first storage means including data for updating the first information processing program. An update step for updating the information processing program;
The second information stored in the second storage means of the second update data stored in the first storage means including data for updating the second information processing program And a transmission control step for controlling transmission to the second computer for updating the processing program. A first computer, a second computer, a nonvolatile first storage means for storing a first information processing program executed by the first computer, and a second executed by the second computer In a program for causing the second computer of an information processing apparatus comprising a nonvolatile second storage means for storing an information processing program to perform information processing,
The first information stored in the first storage means based on the first update data stored in the first storage means including data for updating the first information processing program. Data for updating the second information processing program read from the first storage means by the first computer for updating the information processing program and transmitted by the first computer is included. An update step of updating the second information processing program stored in the second storage means based on the second update data.

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