JP2008262605A - Information reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information reproducing device in which display of a menu screen can be performed faster, while to prevent deficiency of capacity of a memory. <P>SOLUTION: When a menu screen to be displayed is decided and data of the menu screen to be displayed is not copied in a RAM and it is discriminated that data of the menu screen to be displayed cannot be stored in the RAM, a priority value of the menu screen to be displayed is obtained. Next, the maximum priority value in priority values of the menu screen copied in the RAM is obtained, when it is discriminated that the priority value of the menu screen to be displayed is the maximum value or less, at least only one data of the menu screen data having the maximum priority value copied in the RAM is erased. Also when it is discriminated that data of the menu screen to be displayed is already copied in the memory, display of the menu screen to be displayed is executed by data of the menu screen to be displayed from the RAM. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an information reproducing apparatus capable of reproducing at least a file of a predetermined standard and other information recorded on an optical disc, and more particularly to a display function for displaying a menu screen.

  In recent years, the development of optical disc devices called DVD players and DVD recorders that reproduce information on optical discs that record information such as moving images and audio has progressed, and DVD video that employs the MPEG2 compression format as a video compression method. In addition, DivX Ultra (registered trademark) files adopting the AVI (Audio Video Interleave) standard in the MPEG4 compression format are widely used because high-quality moving images can be reproduced.

  By the way, since the DVD standard optical disc has a large recording capacity, when a video signal is recorded, one movie can be recorded on one optical disc for a movie of about two hours. Moreover, Japanese subtitles, language subtitles, Japanese audio, language audio, and the like can be recorded together during the recording. Such an optical disk is an optical disk of the DVD video standard, and is called a DVD video disk. In the optical disc apparatus, interactive operability is defined as a specification. When reproducing information of a DVD video disc, the user's remote control operation and the operation of the optical disc apparatus are performed as follows, for example.

  That is, when a DVD video disc is inserted and set in the optical disc device, the optical disc device starts a reproducing operation for the DVD video disc, and a main menu screen A is displayed on the display device, for example, as shown in FIG. In addition, the optical disc apparatus waits for key input. Therefore, when the user selects the item “chapter menu” on the main menu screen A, the chapter selection screen B on which the chapter sub-menu is displayed is displayed. Then, when the user selects a target chapter, playback is started from that chapter.

When the item “audio menu” or “subtitle menu” on the main menu screen A is selected, the audio selection menu screen C or the subtitle submenu screen D is displayed, and the sound or subtitle can be selected. When the target audio or subtitle is selected, the selected audio or subtitle can be reproduced during reproduction. Further, when the item “playback” on the main menu screen A is selected, playback of the movie recorded on the DVD video disc is started.
Japanese Patent Laid-Open No. 2002-124069 Japanese Patent Laid-Open No. 2005-293783 JP 2006-31866 A

  However, in the user's operation and the operation of the optical disc apparatus as described above, for example, when the display state of the main menu screen A shown in FIG. In the display state of the menu screen A, the key input is waited. When the key input is performed, the optical pickup is sought to the position where the data on the chapter selection screen B is recorded in the DVD video disk. When the rotation speed of the optical disk is stabilized, data reproduction is started from the seek position, and an operation for displaying the chapter selection screen B is performed by the reproduction signal.

  In other words, when the user inputs a key, seek to the track position corresponding to the key input and reproduce a necessary signal on the next menu screen. For this reason, it takes a long time until the corresponding menu screen is displayed after the user inputs a key, and the interactivity is impaired. Note that not only DVD-Video discs but also DivX Ultra files recorded on optical discs have a problem that it takes a lot of time to display a menu screen. In particular, in the case of a DivX Ultra file, it often takes about 5 seconds to display a menu screen.

  Therefore, in the prior art of Patent Document 1, before the submenu to be selected from the main menu is determined, the display data of the plurality of submenus is reproduced from the disk and stored in the memory, and the plurality of submenus are displayed from the main menu. When one is selected, the display data of the selected submenu among a plurality of submenus stored in the memory is read from the memory, converted into a video signal, and the video signal is supplied to the display device. The sub menu screen is displayed on the screen.

  However, before the submenu to be selected from the main menu is determined, the display data of the plurality of submenus is reproduced from the disk and stored in the memory. There arises a problem that it becomes impossible to store all of the display data in the memory.

  In the prior art of Patent Document 2, the stream data of the menu screen to be played back first on the optical disc is stored in the menu buffer memory in advance for the purpose of improving the response speed to the start of disc playback and the jump operation between chapters. Thus, when the disc is inserted, the stream data of the menu screen is read from the menu buffer memory, and decoding is started by the MPEG decoder.

  However, the stream data of the menu screen to be reproduced first on the optical disk is stored in the menu buffer memory in advance, but when the capacity of the menu buffer memory is insufficient, the stream data of the menu screen to be reproduced first on the optical disk is stored. There arises a problem that it becomes impossible to store the whole in the menu buffer memory.

  Further, in the prior art of Patent Document 3, when a disc is loaded into a disc playback device, disc information is acquired, it is determined whether there is the same disc information in the memory, and there is the same disc information. When device control information, image quality adjustment parameters, and sound quality adjustment parameters stored in correspondence with the disk information are read from the memory, transferred to each processing unit, and the user performs operations such as image quality adjustment The operation information is stored in a storage area corresponding to the disk of the memory, and the operation information is transmitted to the corresponding processing unit. Processing is not disclosed.

  The present invention has been made in order to solve the above-described problems, and it is possible to speed up the output of the menu screen, and the capacity of the memory used to speed up the output of the menu screen. An object of the present invention is to provide an information reproducing apparatus that prevents shortage.

  In order to achieve the above object, the invention of claim 1 is a menu which is presumed to be frequently displayed in an information reproducing apparatus capable of reproducing at least a file of a predetermined standard recorded on an optical disc and other information. Screen data is previously copied from the optical disk to the memory, and when the menu screen to be displayed is determined, if it is determined that the menu screen data to be displayed has already been copied to the memory, the data is stored in the memory. When the display of the menu screen to be displayed is executed based on the data of the menu screen that is displayed, and when the menu screen to be displayed is determined, it is determined that the data of the menu screen to be displayed is not copied to the memory The menu screen data to be displayed is copied to the memory, and the menu copied to the memory is copied. Providing information reproducing apparatus characterized by comprising a system controller to execute the display of the menu screen to be the display by the data in-menu screen.

  In this configuration, when the menu screen to be displayed is determined, if it is determined that the data of the menu screen to be displayed has already been copied to the memory, the data of the menu screen stored in the memory The menu screen to be displayed is displayed. When it is determined that the menu screen data to be displayed is not copied to the memory when the menu screen to be displayed is determined, the menu screen data to be displayed is copied to the memory, The menu screen to be displayed is displayed based on the menu screen data copied to the memory.

  According to this configuration, it is possible to speed up the display of the frequently displayed menu screen by previously copying the data of the menu screen presumed to be frequently displayed from the optical disk to the memory.

  In the invention of claim 2, in the invention of claim 1, when the menu screen to be displayed is determined, the system controller determines whether or not the data of the menu screen to be displayed has already been copied to the memory. When it is determined that the copy determination means for determining and the data of the menu screen to be displayed have not already been copied to the memory, there is free space in the memory, and the data of the menu screen to be displayed can be stored. Data storage enablement determining means for determining whether or not there is, priority value determining means for determining a priority value of the menu screen to be displayed when it is determined that the data of the menu screen to be displayed cannot be stored; Maximum value for obtaining the highest priority value indicating the lowest priority among the priority values of the menu screen indicated by the menu screen data copied to the memory Prior value determining means, priority value determining means for determining whether the priority value of the menu screen to be displayed is equal to or less than the maximum priority value, and the priority value of the menu screen to be displayed is equal to or less than the maximum priority value When it is determined that the data is erased, at least one menu screen data having the highest priority value among the data of the menu screen copied to the memory is erased, and the data erasure is returned to the processing of the data storage possibility determination means Means for copying the data of the menu screen to be displayed to the memory when it is determined that the data of the menu screen to be displayed can be stored; and the priority value of the menu screen to be displayed. Is determined to exceed the maximum priority value, the display is executed from the menu screen data recorded on the optical disc, and the display After the menu screen data is copied to the memory, or when it is determined that the menu screen data to be displayed has already been copied to the memory, the display is executed from the menu screen data stored in the memory. And a display execution means.

  In this configuration, when the menu screen to be displayed is determined, the copy determination unit determines whether the data of the menu screen to be displayed has already been copied to the memory. When it is determined that the data of the menu screen to be displayed has not already been copied to the memory, the data storage possibility determination means has a free space in the memory, and can the data of the menu screen to be displayed be stored? Determine whether or not. When it is determined that the menu screen data to be displayed cannot be stored, the priority value obtaining means obtains the priority value of the menu screen to be displayed, for example, using a priority value table.

  Next, the maximum priority value obtaining means obtains the maximum priority value indicating the lowest priority among the menu screen priority values indicated by the menu screen data copied to the memory. Thereafter, the priority value determining means determines whether or not the priority value of the menu screen to be displayed is equal to or less than the maximum priority value. When it is determined that the priority value of the menu screen to be displayed is less than or equal to the maximum priority value, the data erasing means stores the data of the menu screen having the maximum priority value among the menu screen data copied to the memory. At least one is erased, and the process returns to the data storage capability determination means.

  When it is determined that the menu screen data to be displayed can be stored, the data copying means copies the menu screen data to be displayed from the optical disk to the memory. After the menu screen data to be displayed is copied to the memory, the display execution means reads the menu screen data stored in the memory and causes the menu screen to be displayed to be displayed.

  Further, when it is determined that the priority value of the menu screen to be displayed exceeds the maximum priority value, that is, when the priority order of the menu screen to be displayed is lower than the priority order indicated by the maximum priority value, the display execution means Then, the data of the menu screen to be displayed recorded on the optical disc is read, and the display of the menu screen to be displayed is executed. When it is determined that the menu screen data to be displayed has already been copied to the memory, the display execution means reads the menu screen data to be displayed stored in the memory and displays the data. Display the menu screen.

  According to this configuration, it is possible to speed up the display of the frequently displayed menu screen by previously copying the data of the menu screen presumed to be frequently displayed from the optical disk to the memory. Also, when the memory capacity is insufficient, at least one menu screen data with the highest priority value is deleted from the menu screen data copied to the memory. This prevents a shortage of memory capacity used to make it faster.

  According to a third aspect of the present invention, in the second aspect of the invention, a priority value table storing a priority value indicating a priority order for a menu screen set in advance according to a display frequency among a plurality of menu screens in a file of a predetermined standard is stored. The priority value obtaining means obtains the priority value of the menu screen to be displayed from the priority value table when it is determined that the data of the menu screen to be displayed cannot be stored.

  Therefore, when it is determined that the data of the menu screen to be displayed cannot be stored, the priority value of the menu screen to be displayed can be obtained from the priority value table.

  As described above, according to the present invention, it is possible to speed up the display of frequently displayed menu screens by previously copying the data of the menu screen that is presumed to be frequently displayed from the optical disk to the memory. Also, when the memory capacity is insufficient, at least one menu screen data with the highest priority value is deleted from the menu screen data copied to the memory. This prevents a shortage of memory capacity used to make it faster.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of a composite recording / reproducing apparatus as an information reproducing apparatus according to an embodiment of the present invention. Here, a case will be described in which a RAM is used as a memory used to enable fast display of the menu screen. In this case, in order to enable quick display of the menu screen. Since the hard disk is not used as the memory used, it goes without saying that this menu screen display function can be adopted even with a single optical disk device. Further, the optical disk apparatus here has been described with respect to a DVD recorder capable of recording / reproducing, but it goes without saying that this menu screen display function can also be adopted for a DVD player capable of reproducing only.

  In FIG. 1, a composite recording / reproducing apparatus 1 includes an optical disk apparatus 2 that records / reproduces information on / from an optical disk 15 and an HDD (hard disk drive) that records / reproduces information to / from an HD (hard disk) 14. From a hard disk device 3, a tuner 4 that receives a television broadcast signal from an antenna (not shown), selects a television broadcast signal of a desired channel and outputs it as a video / audio signal, and from the optical disk device 2, the hard disk device 3, or the tuner 4 The decoder 5 that decodes the output video / audio signal, the flash ROM 6 that stores broadcast channels that can be received by the tuner 4 and stores programs and data necessary for the operation of the system controller 10, and the operation of the system controller 10. R to temporarily store necessary data And an M16.

  In addition, the composite recording / reproducing apparatus 1 includes a video output unit 7 that converts the video signal decoded by the decoder 5 into a video signal that can be displayed on the display device 131 of the television receiver 13, a menu screen, and a title list screen. The OSD unit 12 for displaying the program guide on the display device 131 of the television receiver 13 and the audio signal decoded by the decoder 5 are converted into an audio signal that can be output by the speaker 132 of the television receiver 13. Various kinds of infrared light command signals transmitted from the audio output unit 8 and the remote controller 11 are received, the received infrared light command signals are converted into electric signal command signals, and the command signals are sent to the system controller 10. A remote control receiving unit 9 for inputting and the system controller 10 including a CPU (not shown) for controlling the entire apparatus are provided. There.

  As a feature of the present embodiment, when the menu screen to be displayed is determined, the system controller 10 determines whether the data of the menu screen to be displayed has already been copied to the memory (RAM 16 or HD 14 that performs high-speed processing). A copy determination means for determining whether or not the data of the menu screen to be displayed has already been copied to the memory, and there is free space in the memory, and the data of the menu screen to be displayed is stored Data storage enablement determining means for determining whether or not data can be stored; and priority value determining means for determining a priority value of the menu screen to be displayed when it is determined that the data of the menu screen to be displayed cannot be stored. The lowest priority among the menu screen priority values indicated by the menu screen data copied to the memory And a maximum priority value calculated means for obtaining a large preference value.

  Further, the system controller 10 includes priority value determining means for determining whether the priority value of the menu screen to be displayed is equal to or less than the maximum priority value, and the priority value of the menu screen to be displayed is the maximum priority value. Data that, when determined to be the following, erases at least one menu screen data having the highest priority value from the menu screen data copied to the memory and returns to the processing of the data storage possibility determination means Erasure means, data copy means for copying the menu screen data to be displayed to the memory when it is determined that the data of the menu screen to be displayed can be stored, and priority of the menu screen to be displayed When it is determined that the value exceeds the maximum priority value, the display is executed from the data on the menu screen recorded on the optical disc. After the menu screen data to be displayed is copied to the memory, or when it is determined that the menu screen data to be displayed has already been copied to the memory, the menu screen data stored in the memory Display execution means for executing display from data.

  FIG. 2 is a diagram showing an example of the contents of the priority value table in the present embodiment. In FIG. 2, the priority value table T stores the relationship between the type of menu screen and the priority value indicating the priority order of the frequency with which the menu screen is displayed. The priority value of the menu screen that is estimated to be displayed most frequently is 1. A smaller priority value indicates a higher priority. For example, in a DivX Ultra (registered trademark) file, the root menu screen (initial menu screen displayed first) has a priority value of 1, the “subtitle” menu screen has a priority value of 1.5, and the “other” menu screen has priority. The value is 2 and the “audio” menu screen is set to a priority value of 2.5. This priority value table T is stored in the flash ROM 6, for example.

  FIG. 3 is a block diagram for explaining an example of the priority value of the menu screen in the present embodiment. As shown in FIG. 3, the root menu screen 31 is an initial menu screen that is initially displayed on the display device when a menu screen display operation is performed. The root menu screen 31 is frequently displayed. The priority of menu display is high and the priority value is set to 1. Note that the smaller the priority value, the higher the display priority of the menu screen. For example, in the menu screen of a DivX Ultra file, “title” “chapter” “audio” “subtitle” “other” is described as the menu type. The correspondence between the menu screen set in advance according to the frequency of use among the plurality of menu screens in the DivX Ultra file and the priority value is stored in advance in the flash ROM 6 as the priority value table T as described above.

  The “subtitle” menu screen 32 is a menu screen when “subtitle” is selected from the route menu screen 31, and this priority value is 0 to the priority value of the link source, for example, the priority value 1 of the route menu screen 31. .5 is added to 1.5. The “other” menu screen 33 is a menu screen when an arbitrary menu screen is selected from the route menu screen 31, and this priority value is set to the link source priority value, for example, the priority value 1 of the route menu screen 31. 1 is added to become 2. The “other” menu screen 35 is a menu screen when an arbitrary menu screen is selected from the “subtitle” menu screen 32, and this priority value is the priority value of the link source, for example, the “subtitle” menu screen. 1.5 is added to the priority value 1.5 of 32 and becomes 3.

  The “audio” menu screen 36 is a menu screen when “audio” is selected from the “other” menu screen 34, and this priority value is the priority value of the link source, for example, the priority of the “other” menu screen 34. 0.5 is added to the value 2 to obtain 2.5. This is a menu screen when “other” is selected from the “other” menu screen 34, and this priority value is added to the link source priority value, for example, the priority value 2 of the “other” menu screen 34. Has been three.

  FIG. 4 is a flowchart for explaining processing for displaying a menu screen in the present embodiment. Processing for displaying the menu screen will be described with reference to this flowchart and FIGS. Here, the menu screen data read from the optical disk 15 is described as being copied to the RAM 16, but the menu screen data read from the optical disk 15 may be copied to the HD (hard disk) 14. Effects can be obtained.

  For example, a priority value table T indicating a correspondence relationship between a menu screen set in advance according to the frequency of use and a priority value among a plurality of menu screens in DivX Ultra is stored in the flash ROM 6 in advance. Here, when the user presses the menu key of the remote controller 11 and the menu screen to be displayed on the display device 131 is determined (step S1), the copy determination means of the system controller 10 accesses the RAM 16 to Based on the menu screen identification information for identifying the menu screen to be displayed, it is determined whether or not the data of the menu screen to be displayed has already been copied to the RAM 16 (step S2).

  When it is determined that the menu screen data to be displayed has not already been copied to the RAM 16, the data storage possibility determination means of the system controller 10 has access to the RAM 16, so that the RAM 16 has free space and the display is performed. It is determined whether or not the menu screen data to be stored can be stored (step S3). When it is determined that the menu screen data to be displayed cannot be stored, the priority value obtaining means of the system controller 10 obtains the priority value A of the menu screen to be displayed from the priority value table T (step S4). For example, if the menu screen to be displayed is the “audio” menu screen, the priority value is determined as 2.5 by the priority value table T.

  Next, the maximum priority value obtaining means of the system controller 10 obtains the maximum priority value B indicating the lowest priority among the menu screen priority values indicated by the menu screen data copied to the RAM 16 by using the priority value table T. Obtained (step S5). Thereafter, the priority value determining means of the system controller 10 determines whether or not the priority value A of the menu screen to be displayed is equal to or less than the maximum priority value B (step S6). When it is determined that the priority value A of the menu screen to be displayed is less than or equal to the maximum priority value B, the data erasing means of the system controller 10 determines the maximum priority value B among the menu screen data copied to the RAM 16. At least one of the menu screen data having is deleted (step S7), and the process returns to the processing of the data storage possibility determination means (step S3).

  When it is determined that the data of the menu screen to be displayed can be stored (step S3), the data copy unit of the system controller 10 reads the menu screen to be displayed from the optical disc 15 read by the optical disc device 2. Data is copied to the RAM 16 (step S8). After the menu screen data to be displayed is copied to the RAM 16, the display execution means of the system controller 10 searches and reads out the data of the menu screen stored in the RAM 16 based on the menu screen identification information, and the OSD unit. 12, OSD processing is performed, and the video output unit 7 converts the video signal into a menu screen video signal and supplies it to the display device 131 of the television receiver 13, thereby displaying the menu screen to be displayed on the display device 131. (Step S9).

  When it is determined that the priority value A of the menu screen to be displayed exceeds the maximum priority value B (step S6), that is, the priority order of the menu screen to be displayed is higher than the priority order indicated by the maximum priority value B. When it is low, the display execution means of the system controller 10 causes the optical disk device 2 to perform a reproduction operation, and searches the menu screen data to be displayed recorded on the optical disk 15 by the menu screen identification information included in the disk management information. The OSD unit 12 performs OSD processing, the video output unit 7 converts the video signal into a menu screen video signal, and supplies the video signal to the display device 131 of the television receiver 13, whereby the menu to be displayed on the display device 131 is displayed. Screen display is executed (step S10).

  When it is determined that the menu screen data to be displayed has already been copied to the RAM 16 (step S2), the display execution means of the system controller 10 stores the above-mentioned data stored in the RAM 16 according to the menu screen identification information. By retrieving and reading out the data of the menu screen to be displayed, the OSD unit 12 performs OSD processing, the video output unit 7 converts it into a video signal of the menu screen, and supplies it to the display device 131 of the television receiver 13. The menu screen to be displayed is displayed on the display device 131 (step S9).

  As described above, according to the present embodiment, the menu screen data that is presumed to be frequently displayed is copied in advance from the optical disk 15 to the RAM 16 so that the menu screen that is frequently displayed can be displayed. I can do it quickly. In addition, when the capacity of the RAM 16 is insufficient, at least one menu screen data having the highest priority value among the data of the menu screen copied to the RAM 16 is deleted. Insufficient capacity of the RAM 16 used in order to be able to do it quickly will not occur.

  The present invention can be used for a display function for displaying a menu screen in an optical disc apparatus such as a DVD player or a DVD recorder. For example, even in the case of a DivX Ultra file menu screen, the menu screen can be displayed quickly. Become.

It is a block diagram which shows the structure of the composite type | mold recording / reproducing apparatus as an information reproducing | regenerating apparatus concerning one Embodiment of this invention. It is a figure which shows an example of the content of the priority value table in the said embodiment. It is a block diagram for demonstrating an example of the priority value of a menu screen in the said embodiment. It is a flowchart for demonstrating the process which displays a menu screen in the said embodiment. It is a figure which shows an example of the menu screen in a DVD video disc.

Explanation of symbols

1 Combined recording / playback device (information playback device)
10 System controller 14 HD (memory)
16 RAM (memory)
T priority value table

Claims (3)

In an information reproducing apparatus capable of reproducing at least a file of a predetermined standard recorded on an optical disc and other information,
The menu screen data that is presumed to be displayed frequently is copied from the optical disk to the memory in advance, and when the menu screen to be displayed is determined, the menu screen data to be displayed has already been copied to the memory. If it is determined that the menu screen to be displayed is executed according to the data of the menu screen stored in the memory,
When it is determined that the menu screen data to be displayed is not copied to the memory when the menu screen to be displayed is determined, the menu screen data to be displayed is copied to the memory and copied to the memory. An information reproducing apparatus comprising: a system controller for executing display of the menu screen to be displayed based on the data of the menu screen displayed.   When the menu screen to be displayed is determined, the system controller determines whether or not the data of the menu screen to be displayed has already been copied to the memory; A data storability determination means for determining whether or not there is free space in the memory and data of the menu screen to be displayed can be stored when it is determined that the data has not already been copied to the memory; When it is determined that the menu screen data to be displayed is not storable, the priority value obtaining means for obtaining the priority value of the menu screen to be displayed, and the menu screen indicated by the menu screen data copied to the memory Maximum priority value obtaining means for obtaining a maximum priority value indicating the lowest priority among the priority values of the menu, and the menu screen to be displayed Priority value determining means for determining whether or not the priority value is equal to or less than the maximum priority value; and when the priority value of the menu screen to be displayed is determined to be equal to or less than the maximum priority value, the priority value is copied to the memory. Data erasure means for erasing at least one of the menu screen data having the highest priority value among the menu screen data to be returned to the processing of the data storage possibility determination means, and storing the data of the menu screen to be displayed When it is determined that it is possible, the data copy means for copying the data of the menu screen to be displayed to the memory, and when the priority value of the menu screen to be displayed is determined to exceed the maximum priority value, The display is executed from the menu screen data recorded on the optical disk, and the menu screen data to be displayed is copied to the memory. Or display execution means for executing display from the data of the menu screen stored in the memory when it is determined that the data of the menu screen to be displayed has already been copied to the memory. The information reproducing apparatus according to claim 1.   A priority value table storing a priority value indicating a priority order for a menu screen set in advance according to a display frequency among a plurality of menu screens in a file of a predetermined standard, wherein the priority value obtaining means includes the menu to be displayed 3. The information reproducing apparatus according to claim 2, wherein when it is determined that screen data cannot be stored, a priority value of the menu screen to be displayed is obtained from the priority value table.

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