JP2004222034A - Receiver - Google Patents

Abstract

A receiving apparatus having a limited reception function can easily confirm whether a contract has been made and whether energization control for EMM reception is performed.
A means for recording received log information in a non-volatile memory when an EMM of contract information relating to conditional access is received, and displaying the recorded log information on a screen is provided. When the EMM is received and the reception log information is recorded, the LED is turned on. Further, when the power supply control of the EMM is executed when the power is turned off, the power supply control time is displayed on the screen.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for receiving signals used in satellite broadcasting, terrestrial broadcasting, CATV (cable television), and the like, and more particularly to a receiving device having a conditional access function for receiving a scrambled signal. .
[0002]
[Prior art]
In paid broadcasting systems for satellite broadcasting such as BS digital broadcasting and CS digital broadcasting, the conditional access system is defined by the BS digital broadcasting conditional access system standard (ARIB-STD-B25) and the like. The broadcaster attaches an IC card that enables conditional access, and the broadcaster multiplexes and transmits predetermined contract information to an IC card of the subscriber's receiving device in broadcast radio waves in the form of EMM (Entitlement Management Message). The receiving device extracts the EMM addressed to the attached IC card from the received signals and transmits the EMM to the IC card, whereby the contract information is recorded on the IC card, and the limited reception broadcast can be viewed. Therefore, the receiving apparatus needs to receive a predetermined channel on which the EMM is multiplexed in order to receive the EMM including the contract information.
[0003]
In addition, the BS digital broadcasting limited reception system standard (ARIB-STD-B25) and the like define a mechanism of energization control for receiving an EMM for a certain period of time when the sub power supply is turned off. If the power supply control information is present in the IC card, the receiving device reads out the power supply control information when the IC card is mounted, and in a standby state when the user turns off the sub power using a remote controller or the like, the tuner unit, the demodulation / error correction unit, and the IC. The system shifts to a standby state 1 in which functions necessary for receiving an EMM such as a card control unit are energized, receives a predetermined channel for a predetermined time according to the energization information, receives an EMM, and records it on an IC card. After the energization time is over, the functions of the tuner, demodulation / error correction unit, IC card control unit, etc. are stopped, and the state shifts to standby state 2 in which only the power supply control unit functions (for example, see Patent Document 1).
[0004]
In order to realize the above-mentioned mechanism, in a commercially available BS digital receiving device or the like, the state can be identified by changing the color of the power LED on the front panel between the standby state 1 and the standby state 2, for example. In the above-mentioned receiving apparatus, generally, the user does not sense when the EMM is transmitted, and it is determined whether the receiver has received the EMM, the contract information is correctly recorded on the IC card, and the contract has been completed. Had to select a paid program to determine if it could be viewed.
[0005]
[Patent Document 1]
JP-A-11-112958 [0006]
[Problems to be solved by the invention]
However, in the case of a contract for a channel dedicated to stored data that does not include video or audio data, it is difficult to determine whether the contract has been made and the descrambling can be released because the video and audio are not reproduced. Even if the contract can be confirmed on the channel where the video and audio are transmitted, if the channel where the EMM is transmitted is different from the channel where the video and audio are transmitted, it is determined how long it should be received. Could not.
[0007]
Further, in the standby state 1 of the related art, not only the EMM reception by the power supply control but also the update of the program information or the download of the common data information related to the program or the broadcast of the receiving apparatus may be performed depending on the time zone. . For this reason, it is unknown which process is currently being performed in the standby state 1, and the user may inadvertently turn off the AC power during the standby state, which may reduce the chance of receiving contract information. Was.
[0008]
SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-described problem and to easily confirm whether or not contract information has been transmitted. Also, it is possible to provide a receiving device which can avoid inadvertently turning off the AC power when receiving contract information in a standby state and can surely receive contract information.
[0009]
[Means for Solving the Problems]
In order to solve the above problem, according to claim 1 of the present invention, means for receiving contract information related to conditional access, means for recording reception log information when the information is received, and means for displaying the log information recorded in the previous period And confirming that the contract information has been received.
[0010]
In claim 2, the reception log information of the contract information relating to the conditional access includes the reception time, the received channel information, and the received card ID.
[0011]
According to a third aspect, when the reception log information is updated, a means for notifying the update is provided.
[0012]
According to a fourth aspect of the present invention, in order to receive contract information related to conditional access, a receiving device that supplies power in a standby state for a predetermined time when the power is turned off by a user is notified of a unit that notifies transition to the standby state when the power is turned off and a standby time. Means.
[0013]
According to a fifth aspect of the present invention, in order to receive contract information related to conditional access, a receiving device that supplies power in a standby state for a predetermined time when the power is turned off by a user includes means for notifying that contract information related to conditional access is being received in a standby state. Have.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a block diagram showing one embodiment of the present invention, and shows a configuration of a receiving apparatus in a pay broadcasting system that manages contract information with an IC card. Hereinafter, the basic operation of the receiving apparatus 100 will be described.
[0015]
The broadcast wave input from the antenna 101 is received by the tuner unit 102, demodulated by a demodulation / error correction unit 103 into a transport stream (a format defined by ISO / IEC13818-1, hereinafter referred to as TS), and further subjected to error correction. This is performed and input to the descrambler 104. In the descrambler 104, a signal input by a program key set via the CPU control unit 110 is descrambled and input to the demultiplexer 105.
[0016]
The input TS signal is separated into components by the demultiplexer 105, and the video and audio data is decoded by the video and audio decoding unit 106. The decoded video and audio signals are converted into analog signals by the video and audio output unit 107, and can be viewed as video and audio on the TV monitor 115.
[0017]
Here, in the above-mentioned TS, unscrambled control data such as program arrangement information, table information for selecting a station, and time information, in addition to video, audio, and data to be scrambled, are packetized and multiplexed. The unscrambled packet is input to the demultiplexer 105 without any processing by the descrambler 104.
[0018]
The program arrangement information separated by the demultiplexer 105, the table information for selecting a channel, the time information, and the like are supplied to the CPU control unit 110 and are used to create data for controlling the receiving device 100. For example, the time information is set in the timer 112 and generates a time to be referred to by the receiving device 100.
[0019]
If the video, audio, or data is scrambled and broadcast, the IC card 114 determines the descrambling. The IC card 114 has an IC card ID unique to the contractor, stores an EMM including contract information addressed to the unique IC card ID, and thereby can determine whether viewing is possible. The EMM is multiplexed with the TS, separated from other data such as video and audio by the demultiplexer 105, and written into the IC card 114 via the card control unit 109.
[0020]
For a scrambled program, an ECM (Entitlement Control Message) in which a key for descrambling the program is encrypted is also multiplexed on the TS. This ECM is also separated by the demultiplexer 105, and the EMM is separated. Is output to the IC card 114 via the card control unit 109 in the same manner as described above. Here, the IC card 114 in which the EMM is written and contracted decrypts the ECM, outputs the key to the card control unit 109, and the CPU control unit 110 sets the key in the descrambler 104 to release the scramble. Is performed, and the program can be viewed.
[0021]
The non-volatile memory 111 is configured by a flash memory, an EEPROM, or the like, and stores control information and program information necessary for reception of a channel or the like previously received at the time of startup after the receiving apparatus 100 is turned on. The user I / F unit 113 receives a user operation such as a button of a remote control or a front panel and transmits the user operation to the CPU control unit 110. The CPU control unit 110 interprets the content and controls the receiving device 100. The display unit 108 includes an LED (light emitting diode) or a liquid crystal panel provided on a front panel or the like of the receiving apparatus 100, and displays a channel number currently being received, a power supply state, and the like.
[0022]
In the embodiment of the present invention, only the EMM including the IC card ID of the IC card 114 among the EMMs separated by the demultiplexer 105 is selected by the CPU control unit 110, and the IC Transmit to the card 114. The IC card 114 determines whether or not the received EMM is in a correct format, and returns a normal reception state to the card control unit 109 if the EMM is received correctly, and returns an error state if it is invalid. Upon receiving the normal reception state from the card control unit 109, the CPU control unit 110 determines that the contract information has been correctly written, and writes the state in which the contract information has been acquired in the nonvolatile memory 111 in a predetermined format.
[0023]
Further, in the embodiment of the present invention, when the CPU control unit 110 receives the normal reception state of the EMM from the card control unit 109, the CPU control unit 110 reads out the time information at that time from the timer 111, and reads the IC card ID and the EMM. Is written in the non-volatile memory 111 together with the received channel number and the channel information of the broadcaster. When the user performs a predetermined operation using a remote controller or the like, an instruction of the user operation is transmitted to the CPU control unit 110 via the user I / F unit 113, and the CPU control unit 110 transmits the contract information recorded in the nonvolatile memory 111. The acquired log is read from the nonvolatile memory 111, output to the video / audio output unit 107 in a predetermined format that can be displayed on-screen, and displayed on the TV monitor 115.
[0024]
FIG. 2 is an example of a display screen when the log information of claims 1 and 2 is displayed on the TV monitor 115. ** and の in FIG. 2 are information for specifying a broadcaster or the like. This information is described in NIT (Network-ID-Table) or BIT (Broadcast ID) included in TS and received. Channel number. Since the IC card 114 is detachable, the receiving apparatus 100 can be equipped with another IC card. By leaving the IC card ID in the history, all the IC cards that have received the EMM of the contract information in the receiving apparatus 100 can be used. It is possible to check the contract history.
[0025]
FIG. 3 is a schematic diagram of a front panel of a receiving apparatus showing one embodiment of the present invention. FIG. 4 is a flowchart for explaining the control of the CPU control unit 110 according to the first, second, and third embodiments. In FIG. 4, the control steps from S401 to S406 are the same as the control in the first and second embodiments using FIG. The third embodiment will be described below with reference to FIGS.
[0026]
After recording the contract information history in the non-volatile memory 111 in S406, the LED 2 (303) on the front panel is turned on in S407 to notify the user that the EMM of the contract information is newly written on the IC card. After turning on the LED2 (303), the CPU control unit 110 holds the state of whether or not the user operates the remote controller or the like to display the history of the contract information described above, and the history display is completed in S408. If this is detected, the LED 2 (303) is turned off in S409. With this configuration, the user can be notified of the timing of checking the history of the contract information.
[0027]
Next, an embodiment of claim 4 will be described with reference to FIGS. 3, 5 and 6. FIG. FIG. 5 is a diagram showing a display example of notification contents displayed on the TV monitor 115 when the IC card holds the energization control information when the power is turned off by a user operation. FIG. 6 is a flowchart showing a control example of the third aspect. The LED1 (302) in FIG. 3 is configured so that the color of lighting changes depending on the energized state of the receiving device of the present invention.
[0028]
For example, when the power to all the constituent parts is energized, the color is green, and the video / audio reproduction function is stopped. That is, the video / audio decoding unit 106 and the video / audio output unit 107 are not energized, and reception of EMM or the like is stopped. The other functional parts are yellow when in the standby state 1 where the power is on, and the user I / F unit 113 for acquiring only the operation of the power button of the remote control or the operation of the power button 301 of the front panel 300 by the user. In the standby state 2 in which only the CPU control unit 110 and the display unit 108 are energized, control is performed so as to light red.
[0029]
When the power off operation is performed by the user, the user I / F unit 113 receives the power off operation in S601 and notifies the CPU control unit 110. The CPU control unit 110 stops the video / audio reproduction processing in S602, reads the energization control information from the IC card 114 via the card control unit 109, and checks in S603 whether or not to energize in the standby state 1.
[0030]
If there is no energization control information, or if the current time read from the timer 112 does not match the period during which energization is to be performed, the process shifts to the standby state 2 (LED1 (302) is red) in S608.
[0031]
On the other hand, if there is valid energization control information in S603, the energization period included in the energization control information is read out, a message indicating that energization for obtaining contract information is to be performed for a predetermined time is generated, and in S604, the TV monitor 115 is displayed for a predetermined time. indicate.
[0032]
FIG. 5 shows an example of the message displayed in step S604, which is displayed for a time sufficient for the user to recognize the message, for example, several seconds. Thereafter, the functions of the video / audio decoding unit 106 and the video / audio output unit 107 are stopped, and the state shifts to the standby state 1 in S605, and the LED1 (302) is changed from green to yellow. Thereafter, in S606, a channel to receive the EMM included in the energization control information is selected, and the EMM is received for the energization time included in the energization control information. It is determined whether the energization time has elapsed in S607. If the energization time is completed, the process proceeds to the standby state 2 in S608, and functions other than the user I / F unit 113, the CPU control unit 110, and the display unit 108 are stopped. LED1 (302) is changed from yellow to red.
[0033]
FIG. 7 is a flowchart showing the control according to the fifth embodiment. In the above example, only the user who has performed the power-off operation can recognize that the energization for receiving the contract information is performed, but other users once receive the standby state 1 and receive another information. It is not possible to recognize whether or not the process is being performed. FIG. 7 illustrates a control example of the receiving apparatus 100 that is not only energized for receiving the EMM but also energized for receiving other information in the standby state 1.
[0034]
The control from S701 to S703 in FIG. 7 is the same as that from S601 to S603 in FIG. If valid energization control information exists in S703, the LED 2 (303) of the front panel 300 is turned on and off in S704, and then the functions of the video / audio decoding unit 106 and the video / audio output unit 107 are stopped, and the standby state in S705 Change to 1 Change the LED1 (302) from green to yellow. Thereafter, in S706, a channel to receive the EMM included in the energization control information is selected, and the EMM is received during the energization time included in the energization control information.
[0035]
In S707, it is determined whether the energization time has elapsed. If the energization time is completed, the blinking of the LED2 (303) is stopped in S708. Thereafter, in S709, it is determined whether there is other information to be received. If so, a predetermined channel to be received is selected in S710, and the standby state 1 is further continued. As described above, information to be received is sequentially received in the standby state 1, and it is confirmed whether or not all receptions are completed in S711, and the process proceeds to the standby state 2 in S712, where the user I / F unit 113 and the CPU control unit The functions other than 110 and the display unit 108 are stopped, and the LED 1 (302) is changed from yellow to red.
[0036]
In the embodiment of the control according to the third aspect, if the EMM is received and the contract information is correctly written during the power-on period of the standby state 1, the LED 2 (303) is controlled to be turned on at the next power-on. However, after the end of the EMM energization control period in the standby state 1, even if the LED 2 (303) is turned off during the standby states 1 and 2, the LED 2 (303) is turned on only in the standby state 1 and the standby state 2 In the standby state 1 and the standby state 2, the light may be always turned on.
[0037]
【The invention's effect】
As described above, the receiving device of the present invention can easily confirm at appropriate timing whether contract information has been transmitted. In addition, it is possible to avoid inadvertently turning off the AC power while receiving the contract information in the standby state, and to reliably receive the contract information.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an embodiment of a receiving apparatus of the present invention; FIG. 2 is a view showing a display example of a contract information receiving history of the receiving apparatus of the present invention; FIG. FIG. 4 is a schematic diagram of an embodiment of a panel. FIG. 4 is a flowchart showing a control example of the receiving device according to claims 1, 2 and 3 of the present invention. FIG. FIG. 6 is a flowchart illustrating a display example. FIG. 6 is a flowchart illustrating a control example of the receiving apparatus according to claim 4 of the present invention. FIG. 7 is a flowchart illustrating a control example of the receiving apparatus according to claim 5 of the present invention.
Reference Signs List 100 receiving apparatus 101 antenna 102 tuner section 103 demodulation / error correction section 104 descrambler 105 demultiplexer 106 video / audio decoding section 107 video / audio output section 108 display section 109 card control section 110 CPU control section 111 nonvolatile memory 112 timer 113 user I / F section 114 IC card 115 TV monitor 300 Front panel 301 Power button 302 LED1
303 LED2
304 IC card slot

Claims (5)

A receiving apparatus having a conditional access function, comprising: means for receiving contract information relating to conditional access, means for recording reception log information when the information is received, and means for displaying log information recorded in the previous period. Receiver. 2. The receiving apparatus according to claim 1, wherein the reception log information of the contract information relating to the limited reception includes a reception time, received channel information, and a received card ID. 2. The receiving apparatus according to claim 1, further comprising means for notifying the update when the reception log information of the contract information relating to the limited reception is updated. In order to receive contract information related to conditional access, a receiving device that is energized in a standby state for a certain period of time when the power is turned off by a user has means for notifying that a transition to the standby state is performed when the power is turned off, and means for notifying the standby time. A receiving device characterized by the above-mentioned. In order to receive contract information related to conditional access, a receiving apparatus that is energized in a standby state for a predetermined time when the power is turned off by a user has means for notifying that contract information related to conditional access is being received in a standby state. Receiver.

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