JP2007300283A - Method and device for reproducing video - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a user who is unfamiliar with the operation of a video reproducing device for reproducing a disk on the market tends to be confused owing to a menu picture configuration which is different in response to the disk, since the main story of the video, a privilege video, a sound and language selection picture, and a subtitle language selection picture are selectable on the menu picture but the way of authoring is different by each content concerning an optical disk with menu data including the disk on the market such as a DVD-ROM. <P>SOLUTION: A reproduction control command included in title selection picture information is analyzed without directly using animation data of title selection menu picture information recorded in the optical disk with title selection picture information. Then, video data of a title selection picture are generated so as to be re-constituted as the title selection picture where user operations are unified for selecting the titles of the various optical disks. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a video playback apparatus that plays back an optical disc having title selection menu screen information that includes one or more digital video / audio data and from which the digital video / audio data can be selected.

A conventional DVD-ROM (Read Only Memory) video standard disc (hereinafter referred to as a DVD video disc), which is a DVD (Digital Versatile Disc) playback-only disc, has title selection menu screen information and video playback. The apparatus displays a title selection menu screen based on the video data included in the title selection menu screen information (for example, Patent Document 1). In a DVD video disc, a programming language called a navigation command is prepared in order to control a playback method in a DVD player. The program described by the navigation command is recorded on the DVD video disk together with the audio / video data, and the DVD player reproduces the audio and video according to the reproduction order and timing indicated by the program described by the navigation command. The DVD video disc has title selection menu screen information, and corresponds to operation buttons using sub-pictures in addition to the video data of the title selection menu screen, and navigation commands of a program for controlling playback of digital audio / video data. (For example, Patent Document 2). In general, DVD-ROM discs such as movies that are commercially available include moving images in the video data of the title selection menu screen information, and many of them are visually excellent, but each is created by a movie content manufacturer, etc. The operation is different in each movie content manufacturer.

In addition, since the video recording standard recorded on a DVD recordable medium (hereinafter referred to as DVD-R) or DVD (hereinafter referred to as DVD-RW) does not have the title selection menu screen information, a title selection screen is displayed on the video reproduction apparatus. Created and displayed.

JP-A-9-63251 JP 10-145722 A

  As described above, an optical disc having title selection menu screen information, such as a DVD video disc, is created by a movie content maker or the like, and operations are different for each company such as a movie content maker. Also, in the case of an optical disc that does not have title selection menu screen information such as a DVD-R or DVD-RW video recording standard disc, the title selection screen is created and displayed by a video playback device, which is different from a DVD video disc. It was.

  For this reason, a user who is unfamiliar with the handling of the video playback apparatus may be confused by displaying a title selection screen with a different operation method depending on the format standard of the optical disc.

Accordingly, the present invention has been made to solve the above-described problems, and provides a user with a title selection screen with a unified operation method regardless of the format standard of the optical disc.

  A video playback method according to the present invention includes a video recording area storing digital video / audio data, one or more video titles in the video recording area, and a menu including image information for selecting the video title. An optical disc having title selection menu screen information as information is reproduced, a menu information reading step for reading the title selection menu information, and the moving image included in the title selection menu screen information read by the menu information reading step A playback control command analyzing step for analyzing a playback control command for the title, a playback title selection screen generating step for generating data of a title selection screen based on an analysis result analyzed by the playback control command analyzing step, and the playback title selection In the screen generation step Having an image superimposition step of converting the data of the raw title selection screen on the video signal.

According to the video reproduction method of the present invention, it is possible to provide a user with a title selection screen with a unified operation method.

Embodiment 1 FIG.
FIG. 1 is a block diagram illustrating a configuration of a video playback apparatus 1000 according to the first embodiment. In the video reproduction apparatus 1000, information recorded on the optical disc 102 is reproduced. Hereinafter, first, the operation of each unit when the video playback apparatus 1000 plays back information recorded on the optical disc 102 will be described.

  In FIG. 1, when playback is instructed by the user operating the operation unit 117, the system controller 112 of the video playback apparatus 1000 sends a predetermined optical disc 102 to the optical drive 101 via the input / output control unit 103. A command for reading a predetermined data length is issued from the position. Upon receiving the command, the optical drive 101 reads data from the optical disk 102 according to the command from the system controller 112, and outputs the read data to the input / output control unit 103.

The input / output control unit 103 also has a mechanism for buffering the read data, and can control the amount of output data according to the data receivable status of the output destination when the data is output from the input / output control 103. If the data read out by the input / output control 103 is not multiplexed stream data obtained by compressing data such as video / audio, the input / output control unit 103 outputs data for control to the system controller 112, and the system controller A predetermined process 112 corresponds to the read control data. On the other hand, when the data read by the input / output control 103 is multiplexed stream data obtained by compressing video / audio data, the input / output control unit 103 outputs the multiplexed stream data to the decompression processing unit 104. At this time, the system controller 112 controls the amount of data read from the optical drive 101 while determining the decoding status of the decompression processing unit 104 and the buffer status of the input / output control unit 103. The decompression processing unit 104 separates the input multiplexed stream data into data such as video (main video), sub-video, audio, etc. by the demultiplex unit 105 in the decompression processing unit 104, and the video processing unit 106, sub-video Each of them is decoded by the processing unit 107, the audio processing unit 108, and the like.

The video data and sub-video data decoded by the video processing unit 106 and the sub-video processing unit 107 are input to the video superimposing unit 109 as digital video data, and the video superimposing unit 109 is a digital video of the input video data and sub-video data. The data and video data generated by the system controller 112 are superimposed and output to the video output unit 110. The video output unit 110 converts it into a digital signal or an analog signal in accordance with the interface of the connected TV or video apparatus, and outputs it to a TV or video apparatus (not shown).

On the other hand, the audio data decoded by the audio processing unit 108 is output to the audio output unit 111 as digital audio data. The audio output unit 111 converts it into a digital signal or an analog signal in accordance with an interface such as a TV or AV amplifier, and outputs it to a TV or AV amplifier (not shown).

Note that specific processing in the decompression processing unit 104 is performed as follows, for example. When the multiplexed stream data input to the demultiplexing unit 105 in the decompression processing unit 104 is MPEG2-TS used in digital broadcasting, Blu-ray Disc, etc., the demultiplexing unit 105 receives the received MPEG2-TS data. Are divided into video PES (packetized elementary stream), sub-picture PES, audio PES, etc., and the respective streams are converted into elementary streams by the video processing section 106, sub-picture processing section 107, and audio processing section 108. , Decoding is performed while synchronizing the video and audio, and the video is ITU-R BT. 709 or ITU-R BT. Digital video data and audio conforming to 656 are converted to PCM data. In addition, when the multiplexed stream data input to the demultiplexing unit 105 in the decompression processing unit 104 is MPEG2-PS used on a DVD or the like, the demultiplexing unit 105 converts the received MPEG2-PS data into a video PES, Separated into sub-picture PES, audio PES, etc., each stream is converted to elementary stream by video processing unit 106, sub-picture processing unit 107, and audio processing unit 108, and decoding processing is performed while synchronizing video and audio The video is ITU-R BT. Digital video data and audio conforming to 656 are converted to PCM data.

  Next, a case where the optical disc 102 is an optical disc having title selection menu screen information and a user has instructed to display a title selection screen will be described.

  First, when the user instructs the system controller 112 to display a title selection screen via the operation unit 117, the system controller 112 issues a title selection screen display request to the menu information reading unit 113. The menu information reading unit 113 issues a command to acquire title selection menu screen information to the optical drive 101 via the input / output control unit 103. Upon receiving the command, the optical drive 101 reads the title selection menu screen information from the optical disk 102 and outputs it to the menu information reading means 113 in the system controller 112 via the input / output control unit 103. The menu information reading means 113 holds the title selection menu screen information in the memory unit 116 and issues a command to the reproduction control command analysis means 114 to analyze the title selection menu screen information held on the memory 116.

The title selection menu screen information includes a playback control command, and there are several types of playback control commands. For example, when the title selection menu screen is displayed using the title selection menu screen information, a command having title transition information that defines an operation when the cursor selection for selecting an arbitrary title is executed, or on multiplexed stream data There are commands for selecting a plurality of audio languages and subtitle languages. The reproduction control command analysis unit 114 reads the title selection menu screen information from the memory unit 116 and analyzes the reproduction control command included in the title selection menu screen information. Each time the playback control command analysis unit 114 detects a playback control command having title transition information from the title selection menu screen information, the playback control command analysis unit 114 records the playback control command analysis unit 114 in the playback control command having title transition information. The transition title number is notified, and a request for generating video data for the title selection screen is issued.

The reproduction title selection screen generation unit 115 embeds a title selection button corresponding to the notified transition title number in the video data for the title selection screen for each command from the reproduction control command analysis unit 114. As an example, when an optical disc having no title selection menu screen information is inserted into the video playback apparatus 1000 according to the first embodiment and the user instructs to display the title selection screen, the title selection screen has four titles on one screen. When the video data of the title selection screen is generated when the video playback device displays a thumbnail screen indicating the representative screen in the video stream data of the title and the title name for each title. Assume that a selection screen template screen is used.

The title selection screen template screen 201 in which the configuration of FIG. 2 has not yet been registered, the title selection button area 202 of the display title 1 in the title selection screen, the title selection button area 203 of the display title 2 and the title selection of the display title 3 A button area 204 and a title selection button area 205 for display title 4. The title selection button areas 202 to 205 for the respective display titles have thumbnail screen areas 206 to 209 and title name areas 210 to 213 indicating representative screens in the video stream data corresponding to the respective display titles.

The reproduction title selection screen generation unit 115 reads the video data of the title selection screen template screen 201 recorded in the memory unit 116 by the first command from the reproduction control command analysis unit 114 and is notified from the reproduction control command analysis unit 114. A title selection button corresponding to the transition title number is formed in the title selection button area 202 of the display title 1. At that time, the reproduction title selection screen generation unit 115 receives the video stream data corresponding to the transition title number in order to read the representative screen for creating the thumbnail screen to the optical drive 101 via the input / output control unit 103. Issue instructions to read. The optical drive 101 reads a predetermined data length from a predetermined position of the video stream data corresponding to the transition title number from the optical disk 102, and outputs it to the decompression processing unit 104 via the input / output control unit 103. The decompression processing unit 104 separates the multiplexed stream data, which is the input video stream data, into various stream data by the demultiplexing unit 105, decodes only the video (main video) by the video processing unit 106, and outputs digital video data. To the video superimposing unit 109. The video superimposing unit 109 reduces the image size of the input digital video data to the size of the thumbnail screen area for the title selection screen, and plays the reduced digital video data in the playback title selection screen generation unit 115 in the system controller 112. Output to. The playback title selection screen generation unit 115 superimposes the input digital video data whose size has been reduced on the thumbnail screen area 206 in the title selection button area 202 of the display title 1. Further, the reproduction title selection screen generation unit 115 issues a command for reading reproduction control data corresponding to the transition title number to the optical drive 101 via the input / output control unit 103 in order to read the title name. The optical drive 101 reads the reproduction control data corresponding to the transition title number from the optical disk 102 and outputs it to the system controller 112 via the input / output control unit 103. The system controller 112 detects the title name from the input reproduction control data and outputs the title name to the reproduction title selection screen generation unit 115. The reproduction title selection screen generation unit 115 generates video data of the title selection screen by superimposing the input title name on the title name area 210 in the title selection button area 202 of the display title 1.

When the reproduction title selection screen generation unit 115 receives the second instruction from the reproduction control command analysis unit 114, the reproduction title selection screen generation unit 115 displays a title selection button corresponding to the transition title number notified from the reproduction control command analysis unit 114. The button area 202 is formed. The thumbnail screen and the title name are processed in the same manner as described above and superimposed on the thumbnail screen area 207 in the title selection button area 203 of the display title 2 and the title name area 211 in the title selection button area 202 of the display title 2. Generate video data for the title selection screen.

When the reproduction title selection screen generation unit 115 receives the command from the reproduction control command analysis unit 114 again, a title selection button is formed in order for the display title 3 and display title 4 areas by performing the same processing as described above. . Further, when the reproduction title selection screen generation unit 115 receives the command from the reproduction control command analysis unit 114, the reproduction title selection screen generation unit 115 cannot arrange the title selection button on one title selection screen, but generates a new title selection screen as the next page. Therefore, it is possible to cope with this by reading the video data of the title selection screen template screen 201 recorded in the memory unit 116 and processing the title selection button, the thumbnail screen and the title name as described above.

When all the detection of the playback control command having the title transition information from the title selection menu screen information is completed, the playback control command analysis unit 114 sends the video data of the title selection screen to the video superimposing unit 109 for the playback title selection screen generation unit 115. The playback title selection screen generation means 115 sends the video data of the title selection screen and the video data of the cursor to the video superimposing unit 109. The command for outputting the video data of the cursor indicating which title selection button is selected is issued. Output. The video superimposing unit 109 selects only the video data from the reproduction title selection screen generation unit 115 of the system controller 112 and displays a title selection screen on a TV or the like (not shown) via the video output unit 110. When the user gives an instruction to move the cursor with the operation unit 117 for title selection, the operation unit 117 issues a cursor movement instruction command to the reproduction title selection screen generation means via the system controller 112 to generate the reproduction title selection screen. The means 115 updates only the video data of the cursor output to the video superimposing unit 109. When the user gives an instruction to update the title selection screen at the operation unit 117 in order to view the next title selection screen, the operation unit 117 sends an instruction to update the title selection screen to the reproduction title selection screen generation unit via the system controller 112. The reproduction title selection screen generation means 115 issues a command, and uses the video data of the title selection screen output to the video superimposing unit 109 as the video data of the title selection screen of the next page, and the video data of the cursor on the new title selection screen. Update by outputting. When the user determines an arbitrary title selection button on the title selection screen, the system controller 112 reads the video stream data corresponding to the transition title number in order to reproduce the transition title number of the corresponding title selection button. A read command is issued to the optical drive 101 via the input / output control unit 103. Thereafter, the title selected by the user can be reproduced by performing the reproduction process described above.

So far, only the playback control command having the title transition information of the title selection menu screen information on the optical disc has been taken up, but the playback control having the transition information to the entry scene that can search the title in the title selection menu screen information on the optical disc. If a command is registered, an entry scene selection screen may be generated. Further, in the above description, only the title selection is possible on the title selection screen, and the selection of the sub-video (caption) language and the audio language can be realized by the operation unit 117 such as the remote controller of the conventional video playback device. The title selection menu screen information on the optical disc includes subtitle language and audio language selection in addition to title selection, and changes the subvideo language and audio language. The reproduction control command analysis unit 114 may detect the reproduction control command, and the reproduction title selection screen generation unit 115 may be instructed to arrange a sub-picture language / audio language selection button in the title selection screen.

  FIG. 3 shows an area for recording the video data of the playback title selection screen generated by the playback title selection screen generation means 115 by connecting the hard disk 301 to the input / output control unit 103 of the video playback apparatus 1000 of FIG. A video playback device 1001 is provided with the title selection screen data recording area 302 provided on the hard disk 301. When an optical disc having title selection menu screen information is inserted into the video playback apparatus 1001 and the user instructs the system controller 117 to display a title selection screen via the operation unit 117, the menu information reading unit 113 in the system controller is displayed. The playback control command analysis unit 114 and the playback title selection screen generation unit 115 perform the same processing as the video data generation processing of the title selection screen described above, and the playback title selection screen generation unit 115 performs the video superimposing unit 109 as described above. The title selection screen is output to a TV, a video device, etc. (not shown) via the video output unit 110. At that time, the reproduction title selection screen generation unit 115 records the generated video data of the title selection screen in the reproduction title selection screen data recording area 302 of the hard disk 301 with respect to the hard disk 301 via the input / output control unit 103. The command for recording the video data of the generated title selection screen is issued. The hard disk 301 records the input video data of the generated title selection screen in the playback title selection screen data recording area 302 in accordance with a command from the playback title selection screen generation unit 115. When the user instructs the system controller 117 to display the title selection screen again via the operation unit 117, the menu information reading unit 113 does not perform the above-described video data generation processing of the title selection screen, and the menu information reading unit 113 Instead of reading from the optical disc 102, the video data of the playback title selection screen recorded in the playback title selection screen data recording area 302 of the hard disk 301 is read, and the read video data of the title selection screen is held in the memory unit 116. The reproduction title selection screen generation means 115 is instructed to output video data of the reproduction title selection screen. The reproduction title selection screen generation unit 115 reads the video data of the title selection screen held in the memory unit 116 in accordance with the instruction of the menu information reading unit 113, adds the video data of the cursor, the video superimposition unit 109, and the video output unit The title selection screen can be displayed by outputting to a TV, a video device, or the like (not shown) via 110.

  In the video playback apparatus 1001, the video data of the title selection screen generated by the playback title selection screen generation unit 115 is recorded in the playback title selection screen data recording area of the hard disk 301, but the system controller 112 has a nonvolatile memory such as a flash memory. An area (playback title selection screen data recording area) for recording video data of the title selection screen generated and connected on the nonvolatile memory may be provided.

  In addition, when recording the video data of the title selection screen generated by the playback title selection screen generation unit 115 in the playback title selection screen data recording area 302, the video data is stored together with a unique disk identifier unique to each optical disk. The video data of the title selection screen may be saved.

  A specific example in the case where the optical disc 102 is a DVD video disc which is an optical disc having title selection menu screen information will be described.

In DVD video discs, terms for the logical structure of DVD applications are frequently cited and used for each name of the data structure. For this reason, for the convenience of explanation, the logical structure of the application recorded on the optical disc and the definitions of terms are first given.

  In the DVD video disc, the unit of application is referred to as a title. In the case of a movie application, the title is one movie, and three movies are recorded on the optical disc storing three titles. As a superordinate concept of titles, there is a title set that shows multiple titles that share video information with each other. There are three versions of the same movie that share most of the video information with the uncut version, the theatrical release version, and the TV version. If there are, these become one title set. A plurality of title sets can be recorded on the same disc. For example, when movie A and movie B record an uncut version, a theater release version, and a television version, respectively, two title sets each consisting of three titles are recorded. Each title is composed of a program and a program playback path. The program is a logical reproduction unit of video information and audio information, and corresponds to an MPEG system stream called a cell. The reason why there is a program as a logical playback unit is to share cells in different playback paths. A reproduction path of a program that does not include a branch is called a program chain. These program chains are connected to each other by a link from a program including a branch such as a menu, and a reproduction path including the branch is constructed. This is a title set.

Hereinafter, the data structure recorded on the optical disc will be described on the premise of the logical structure of the application described above.

FIG. 4 shows an example of a DVD video disk in order to show the data structure of the optical disk used in this embodiment. The optical disc 401 is a DVD video disc, and its data structure is roughly divided into a lead-in 402 and lead-out 404 in which disc identification information and physical information are recorded, and a user area 403 that is an area provided to the user. The optical disc 401 is physically divided into a plurality of sectors, and consecutive address numbers are assigned. The user area 403 has a file structure area 405 for recording file system data for indicating the directory and file structure on the disk. The file structure area 405 is recorded by a file system compliant with UDF (Universal Disc Format) and ISO9660, and the location information (logical address) for indicating the directory and file structure on the disk is represented by the logical sector number LSN. Is done. The logical sector is 2048 bytes similar to the physical sector. In the user area 403, a video manager 406 (hereinafter VMG 406) that records menu information for switching all title information on the disc, selection of titles, audio language, subtitle language, and the like, title information in the title set Video title set 407 (hereinafter referred to as VTS # 1 407), video title set 408 (hereinafter referred to as VTS # 2 408), video title set 409 (hereinafter referred to as VTS). #N 409) (n is a maximum of 99). A DVD video disk can have one video manager (hereinafter referred to as VMG) and one or more video title sets (hereinafter referred to as VTS). In FIG. 4, n VTSs are recorded. The VMG 406 has menu data VOBS 411 (recording control data 410 (hereinafter referred to as VMGI 410) that records the position and size of each VTS and playback control information of the disc, menu information for switching the title selection, audio language, subtitle language, and the like. Hereinafter, the VMGI_VOBS 411) and the VMGI backup 412 recorded as backup data when the VMGI cannot be read due to scratches or fingerprints are recorded. VTS # n 409 includes VTS playback control information and recorded control data 413 (hereinafter referred to as VTSI 413), a list of chapters that can jump to a predetermined scene in the VTS, a menu that allows selection of a title in the VTS, and the like. Menu VOBS 414 in the recorded VTS (hereinafter referred to as VTSM_VOBS 414), title VOBS 415 in which the title stream data is recorded (hereinafter referred to as VTSTT_VOBS 415), and backup data when VTSI cannot be read due to scratches, fingerprints, etc. A backup 416 is recorded.

  FIG. 5 is a screen superposition image when VMGM_VOBS 411 and VTSM_VOBS 414 which are various menu data are reproduced. The menu data includes video (main video) as a background, sub-picture as button shape and title character, audio as BGM, and highlight data indicating a cursor when the user selects. . Video, sub-video, and audio data are processed by the video processing unit 106, sub-video processing unit 107, and audio processing unit 108 described above, and highlight data is highlighted by the system controller 112 at the cursor (selected location is highlighted). ) A video is generated, superimposed by the video superimposing unit 109, and output to the video output unit 110 to be displayed on a TV or video device (not shown). The highlight screen in FIG. 5 only displays one of the cursor position information included in the highlight data. When the user makes a cursor movement request through the operation unit 117, the system controller 112 displays the highlight information in FIG. The cursor can be moved by changing the cursor position on the light screen and superimposing it by the video superimposing unit 109. When the user makes a cursor determination request through the operation unit 117, the system controller 112 reads the reproduction control command corresponding to the cursor position at the time of the cursor determination request from the highlight data, and the operation designated by the reproduction control command Execute.

  On the other hand, unlike a DVD video disc, a video recording standard disc does not have data for various menus. Therefore, a playback unit program recorded on the video recording standard disc (hereinafter referred to as a title of a PG DVD video disc). ), The system controller 112 in the video playback device generates the video data of the title selection screen on which the representative picture, PG name, and cursor of each PG as shown in FIG. The video is output to the video superimposing unit 109 and displayed on a TV, a video device, etc. (not shown) via the video output unit 110.

  Unify title selection screens for optical discs that record title selection menu screen information such as VMGM_VOBS 411 and VTSM_VOBS 414, which are data for various menus of DVD video discs, and optical discs that do not have title selection menu screen information such as video recording standard discs When the title selection screen is displayed, the title selection menu screen information of the optical disc on which the title selection menu screen information is recorded is analyzed to display the title as with the optical disc without the title selection menu screen information. A method for generating the video data of the selection screen in the video playback device will be described.

When an optical disc on which title selection menu screen information such as the optical disc 401 in FIG. 4 is recorded is inserted into the optical disc 102 in FIG. 1, and the user requests the system controller 112 to display a title selection screen through the operation unit 117, the system The controller 112 issues a title selection screen display request to the menu information reading unit 113 of the system controller 112. The menu information reading unit 113 issues a command for reading the VMGM_VOBS 411 to the optical drive 101 via the input / output control unit 103.

The optical drive 101 reads the VMGM_VOBS 411 from the optical disk 102 and outputs it to the menu information reading means 113 of the system controller 112 via the input / output control unit 103. The menu information reading unit 113 is temporarily held in the memory unit 116. The reproduction control command analysis means 114 reads the VMGM_VOBS 411 held in the memory 116 and analyzes the navigation command in the highlight data included in the navigation pack (the reproduction control information recorded on the video stream data) in the VMGM_VOBS 411. When the title transition information is detected, the transition title number recorded in the playback control command having the title transition information is notified to the playback title selection screen generation unit 115, and video data for the title selection screen is generated. Make a request.

The selection screen generation unit 115 outputs the video data of the title selection screen and the video data of the cursor indicating which title selection button is selected to the video superimposing unit 109 by executing the above process. The video superimposing unit 109 selects only the video data from the reproduction control command analyzing unit 114 of the system controller 112 and displays a title selection screen on a TV, a video device (not shown) or the like via the video output unit 110. Further, in the DVD video disc, the menu information reading unit 113 sends the VTSM_VOBS 414 to the optical drive 101 via the input / output control unit 103 in order to generate video data of a selection screen for a searchable entry scene in a title called a chapter. May be issued, and the same processing as VMGM_VOBS 411 may be performed. Also, when obtaining a title name from a DVD video disc, if the title name is not included in the playback control data, the title number on the disc may be used as the title name.

As described above, the video playback apparatus 1000 in FIG. 1 according to the first embodiment can provide the user with a title selection screen with a unified operation method regardless of whether or not the title selection menu screen information is recorded on the optical disc. it can.

  Also, in the video playback device 1001 of FIG. 3 described in the first embodiment, when the display instruction of the title selection screen is received from the user, the title data is again generated by saving the generated video data of the title selection screen on the hard disk. When there is an instruction to display the selection screen, it can be quickly displayed by reading the video data of the title selection screen generated from the hard disk.

In addition, when saving the video data of the generated title selection screen to the hard disk, the video data of the title selection screen generated for each optical disc is managed by adding a unique identifier unique to the disc that can identify each optical disc. Even if the optical disk is replaced, it can be quickly displayed by reading the video data of the title selection screen generated from the hard disk. Furthermore, by making necessary corrections to the information on the hard disk, the user can make changes that suit the user's preferences, such as title changes.

Embodiment 2. FIG.
FIG. 7 is a block diagram showing a configuration of video playback apparatus 2000 according to the second embodiment. In the video reproduction apparatus 2000, information recorded on the optical disc 102 is reproduced. Hereinafter, the operation of each unit when information is reproduced from the optical disc 102 in the video reproduction apparatus 2000 will be described first.

7 that are assigned the same figure numbers as in FIG. 1 are omitted to show the same operation, and only different operations will be described. A case will be described in which the optical disc 102 is an optical disc having title selection menu screen information, and the display instruction of the title selection screen is received from the user.

First, when the user requests the system controller 712 to display a title selection screen via the operation unit 117, the system controller 712 displays the title selection screen on the playback control information reading unit 701 for each playback unit. Make a request. The reproduction control information reading unit 701 for the reproduction unit instructs the optical drive 101 to acquire reproduction control information for all reproduction units via the input / output control unit 103. Here, the reproduction unit is one title unit. Receiving the command, the optical drive 101 reads the playback control information of the playback unit from the optical disk 102 and outputs it to the playback control information reading means 701 of the playback unit in the system controller 712 via the input / output control unit 103. The reproduction control information read unit 701 stores the reproduction control information of the reproduction unit in the memory unit 116, and analyzes the reproduction control information of the reproduction unit held on the memory 116 in the reproduction control information analysis unit 702 of the reproduction unit. To issue an order. The reproduction unit reproduction control information reading unit 701 performs the above-described processing by the number of reproduction units on the optical disc. The playback control information for each playback unit corresponds to control data (VTSI) or backup for VTSI in each VTS of FIG. 4 in a DVD video disk.

Each time the playback control information analysis unit 702 receives a command from the playback unit playback control information reading unit 701, the playback unit playback control information is read from the memory unit 116, and the playback unit playback control information included in the playback unit playback control information is read. The unit title number on the optical disk and the recording start position of the video stream data on the optical disk are acquired, and the acquired title number and the recording start position of the video stream data on the optical disk are transmitted to the reproduction title selection screen generation means 703. And issues a command to generate video data for the title selection screen.

The reproduction title selection screen generation unit 703 reads the video data of the title selection screen template screen 201 recorded in the memory unit 116 by the first command from the reproduction unit reproduction control information analysis unit 702 and analyzes reproduction unit reproduction control information. A title selection button corresponding to the title number notified from the means 702 is formed in the title selection button area 202 of the display title 1. At that time, the reproduction title selection screen generation unit 703 reads the video stream data corresponding to the title number in order to read the representative screen for creating the thumbnail screen to the optical drive 101 via the input / output control unit 103. Give an order. The optical drive 101 reads a predetermined data length from a predetermined position of the video stream data corresponding to the title number from the optical disk 102, and outputs it to the decompression processing unit 104 via the input / output control unit 103. The decompression processing unit 104 separates the multiplexed stream data, which is the input video stream data, into various stream data by the demultiplexing unit 105, decodes only the video (main video) by the video processing unit 106, and outputs digital video data. To the video superimposing unit 109. The video superimposing unit 109 reduces the image size of the input digital video data to the size of the thumbnail screen area for the title selection screen, and plays the reduced digital video data in the playback title selection screen generation unit 703 in the system controller 712. Output to. The reproduction title selection screen generation unit 703 superimposes the input digital video data with the reduced size on the thumbnail screen area 206 in the title selection button area 202 of the display title 1. Further, the reproduction title selection screen generation unit 703 issues a command for reading reproduction control data corresponding to the title number to read the title name to the optical drive 101 via the input / output control unit 103. The optical drive 101 reads the reproduction control data corresponding to the title number from the optical disc 102 and outputs it to the system controller 712 via the input / output control unit 103. The system controller 712 detects the title name from the input reproduction control data, and outputs the title name to the reproduction title selection screen generation unit 703. The reproduction title selection screen generation unit 703 generates video data of the title selection screen by superimposing the input title name on the title name area 210 in the title selection button area 202 of the display title 1.

When the reproduction title selection screen generation unit 703 receives a second instruction from the reproduction unit reproduction control information analysis unit 702, the reproduction title selection screen generation unit 703 displays a title selection button corresponding to the title number notified from the reproduction unit reproduction control information analysis unit 702. A title selection button area 202 of title 2 is formed. The thumbnail screen and the title name are processed in the same manner as described above and superimposed on the thumbnail screen area 207 in the title selection button area 203 of the display title 2 and the title name area 211 in the title selection button area 202 of the display title 2. Generate video data for the title selection screen.

When the reproduction title selection screen generation unit 703 receives a command from the reproduction control information analysis unit 702 for each reproduction unit, the title selection buttons are formed in the display title 3 and display title 4 regions by performing the same processing as described above. Further, when the playback title selection screen generation unit 703 receives a command from the playback control information analysis unit 702 for each playback unit, the title selection button cannot be arranged on one title selection screen, but a new title selection screen as the next page is displayed. Can be handled by reading the video data of the title selection screen template screen 201 recorded in the memory unit 116 and generating the same title selection button, thumbnail screen, and title name as described above. When the inserted optical disc is a DVD video disc, the title number on the disc may be used as the title name when the title name is not included in the playback control data during the title name acquisition process.

When the reproduction control information reading unit 701 of the reproduction unit reads all the reproduction units on the optical disc, the video superimposing unit 109 selects which video data and which title selection button of the title selection screen are selected by the reproduction title selection screen generation unit 703. The reproduction title selection screen generation unit 703 outputs the video data of the title selection screen and the video data of the cursor to the video superimposing unit 109. The video superimposing unit 109 selects only video data from the reproduction title selection screen generation unit 703 of the system controller 712 and displays a title selection screen on a TV or the like (not shown) via the video output unit 110. When the user gives an instruction to move the cursor in the operation unit 117 for title selection, the operation unit 117 issues a cursor movement instruction command to the reproduction title selection screen generation means via the system controller 712 to generate the reproduction title selection screen. The means 115 updates only the video data of the cursor output to the video superimposing unit 109. When the user gives an instruction to update the title selection screen in the operation unit 117 in order to view the next title selection screen, the operation unit 117 sends an instruction to update the title selection screen to the reproduction title selection screen generation unit via the system controller 712. The reproduction title selection screen generation means 703 outputs the instruction video data of the cursor on the new title selection screen using the video data of the title selection screen output to the video superimposing unit 109 as the video data of the title selection screen of the next page. To update. When the user determines an arbitrary title selection button on the title selection screen, the system controller 712 inputs / outputs so as to read the video stream data corresponding to the transition title number in order to reproduce the title number of the corresponding title selection button. A read command is issued to the optical drive 101 via the control unit 103. Thereafter, the title selected by the user can be reproduced by performing the reproduction process described in the first embodiment.

  The video data of the title selection screen generated in the present embodiment may be recorded in the playback title selection screen data recording area on the hard disk or the nonvolatile memory as in the first embodiment. In this case, as in the first embodiment, when the generated video data of the title selection screen is recorded in the reproduction title selection screen data recording area, it may be managed for each unique identifier that can identify each optical disc.

As described above, in the video playback apparatus 2000 of FIG. 7 described in the second embodiment, as in the first embodiment, a title whose operation method is unified by the user regardless of whether or not title selection menu screen information is recorded on the optical disc. A selection screen can be provided. Further, when the generated video data of the title selection screen is recorded on the hard disk, it can be quickly displayed as in the first embodiment. Further, when the generated video data of the title selection screen is stored on the hard disk, a unique identifier unique to the disk that can identify each optical disk is added, so that the display can be quickly performed even if the optical disk is replaced as in the first embodiment. it can. Furthermore, by making necessary corrections to the information on the hard disk, the user can make changes that suit the user's preferences, such as title changes.

It is a block diagram which shows the structure of the video reproduction apparatus in Embodiment 1 of this invention. It is an example of the title selection screen template screen at the time of producing | generating a title selection screen. It is a block diagram which shows the structure of the video reproduction apparatus in Embodiment 1 of this invention. 4 is an explanatory diagram for explaining an example of an optical disc 102 having title selection menu screen information. FIG. It is explanatory drawing for demonstrating an example of the menu screen using the title selection menu screen information of the optical disk which has title selection menu screen information. It is explanatory drawing for demonstrating an example of the title selection screen of the optical disk which does not have title selection menu screen information. It is a block diagram which shows the structure of the video reproduction apparatus in Embodiment 2 of this invention.

Explanation of symbols

101 Optical Drive 102 Optical Disk 103 Input / Output Control Unit 104 Decompression Processing Unit

Claims (12)

Title selection menu screen information which is menu information composed of a video recording area storing digital video / audio data, one or more video titles in the video recording area, and image information for selecting the video title. In a video playback method for playing back an optical disc,
A menu information reading step for reading the title selection menu information;
A reproduction control command analyzing step for analyzing a reproduction control command to the moving image title included in the title selection menu screen information read by the menu information reading step;
A reproduction title selection screen generation step for generating data of a title selection screen based on the analysis result analyzed by the reproduction control command analysis step;
A video reproduction method comprising a video superimposing step of converting data of the reproduction title selection screen into a video signal in the reproduction title selection screen generation step. The step of holding the data of the playback title selection screen in the playback title selection screen data recording area on the memory, and the step of reading the data of the playback title selection screen from the playback title selection screen data recording area and displaying the title selection screen The video reproduction method according to claim 1, further comprising: 3. The video playback method according to claim 2, further comprising the step of attaching a unique disc identifier for each optical disc in order to manage the data of the playback title selection screen in the playback title selection screen data recording area on the memory. . Title selection menu screen information which is menu information composed of a video recording area storing digital video / audio data, one or more video titles in the video recording area, and image information for selecting the video title. In a video playback device that plays back an optical disc,
A menu information reading unit for reading the title selection menu information;
A reproduction control command analysis unit for analyzing a reproduction control command to the moving image title included in the title selection menu screen information read by the menu information reading unit;
A reproduction title selection screen generation unit that generates data of a title selection screen based on the analysis result analyzed by the reproduction control command analysis unit;
A video playback device comprising video playback means for converting the data of the playback title selection screen into a video signal in the playback title selection screen generator. Means for holding the reproduction title selection screen data in a reproduction title selection screen data recording area provided on a memory; reading out the reproduction title selection screen data from the reproduction title selection screen data recording area; 5. The video reproducing apparatus according to claim 4, further comprising a display unit. 6. A video reproducing apparatus according to claim 5, further comprising means for attaching a unique disc identifier different for each optical disc in order to manage the data of the reproduction title selection screen in a reproduction title selection screen data recording area on the memory. . Title selection menu screen information which is menu information composed of a video recording area storing digital video / audio data, one or more video titles in the video recording area, and image information for selecting the video title. In a video playback method for playing back an optical disc,
A reproduction unit reproduction control information reading step of reading reproduction control information of the reproduction unit which is reproduction control information of the video title;
A reproduction unit reproduction control information analysis step of analyzing the reproduction unit reproduction control information read in the reproduction unit reproduction control information reading step;
A reproduction title selection screen generation step for generating data of a title selection screen based on the analysis result analyzed by the reproduction control information analysis step of the reproduction unit;
A video reproduction method comprising a video superimposing step of converting data of the reproduction title selection screen into a video signal in the reproduction title selection screen generation step. The step of holding the data of the playback title selection screen in the playback title selection screen data recording area on the memory, and the step of reading the data of the playback title selection screen from the playback title selection screen data recording area and displaying the title selection screen The video playback method according to claim 7, further comprising: 9. The video playback method according to claim 8, further comprising a step of attaching a unique disc identifier for each optical disc in order to manage the data of the playback title selection screen in the playback title selection screen data recording area on the memory. . Title selection menu screen information which is menu information composed of a video recording area storing digital video / audio data, one or more video titles in the video recording area, and image information for selecting the video title. In a video playback device that plays back an optical disc,
A reproduction unit reproduction control information reading unit for reading reproduction control information of a reproduction unit that is reproduction control information of the video title;
A reproduction unit reproduction control information analysis unit for analyzing the reproduction unit reproduction control information read by the reproduction unit reproduction control information reading unit;
A reproduction title selection screen generation unit that generates data of a title selection screen based on the analysis result analyzed by the reproduction control information analysis unit of the reproduction unit;
A video playback apparatus comprising a video superimposing unit that converts data of the playback title selection screen into a video signal in the playback title selection screen generation unit. Means for holding the reproduction title selection screen data in a reproduction title selection screen data recording area provided on a memory; reading out the reproduction title selection screen data from the reproduction title selection screen data recording area; 11. The video reproduction apparatus according to claim 10, further comprising a display unit. 12. The video playback apparatus according to claim 11, further comprising means for attaching a unique disc identifier for each optical disc in order to manage the data of the playback title selection screen in the playback title selection screen data recording area on the memory. .

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