JP2006134428A - Dvd reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a DVD reproducing device which can quickly perform the search for data recorded on a DVD and the program search reproduction. <P>SOLUTION: The DVD recorder 1 for reproducing the DVD is provided with: a PGC information acquisition means 31 for performing the acquisition by reading out PGC information on a title to be reproduced; a cell identification information acquisition means 32 for performing the acquisition by reading out still-image data at the cell beginning part included in each cell among from all the cells which are indicated by the acquired PGC information; a cell list screen information generation means 33 for generating image information on a cell list screen consisting of an reduced image of the still-image of the beginning parts of all the cells and selection buttons; an OSD display part 9 for displaying the cell list screen by providing the display device with the generated cell list screen information; and a reproduction control means 34 for performing the control so that the cells constituting the title are read out and reproduced, in order from the cells corresponding to the selected reduced image according to the acquired PGC information. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a DVD playback apparatus that plays back data recorded on a DVD (Digital Versatile Disc).

Playback-only optical discs that record image and audio data are CDs for music (Compact Disc),
It has already been put into practical use as a laser disk, a video CD and the like. In addition, MPEG2 (Moving Picture Experts Group Phase2), which is an international standard for moving picture compression, and a DVD standard using the AC3 audio compression system have been established and put into practical use as DVD video. D
The VD standard was originally a read-only DVD-ROM (Read O
nly Memory), a DVD-VR standard that can be rewritten as well as reproduced has been established.

In the DVD-Video standard, a VMG / VTS menu (menu information) is prepared for a disc title production company, and the menu information is produced using a dedicated authoring device. Then, during playback, the recorded content (title) of the disc is displayed with reference to the menu information in addition to the normal video data, and the user can select the desired viewing title by button display using sub-pictures, etc. Search for the desired title and search for the desired title.

Also in the DVD-VR standard, as in the DVD-Video standard, the title recorded on the disc is displayed with reference to the menu information, and the desired viewing title is displayed to the user by a button display using a sub-picture. By making the selection, search for the desired viewing title and cue playback of the desired viewing title are performed.

In addition, there is a digital information recording / reproducing system in which a user can create a menu corresponding to recorded contents (see, for example, Patent Document 1).

There is also an information reproducing apparatus that can reduce the processing load related to the construction of the menu screen of an optical disc such as a DVD including a plurality of actual information compressed by different compression methods (for example,
Patent Document 2).

Also, when reproducing an information recording medium such as an optical disk, the transition state of reproduction is restored (
There is also an information reproducing apparatus that can be returned to the previous one or the previous two (for example, see Patent Document 3).

In addition, there is a data reproduction system in which a cueing operation can be smoothly performed at a destination intended by the user even when the hierarchical structure of the reproduction path is different for each application (see, for example, Patent Document 4).
JP 2003-36653 A JP 2004-215111 A JP 2001-86469 A JP 2000-90651 A

However, there is a large amount of data recorded on a large-capacity DVD. Searching for the video that you want to view and searching for the beginning of the video, you can search for the video that you want to view only by displaying the title and selecting it. However, since it takes more time, there is a problem that it is not possible to view a video or the like to be viewed quickly.

Further, in the prior art described in Patent Document 1, when the number of titles to be recorded increases or decreases as in the case of recording in the DVD-VR standard, a menu that needs to be recreated every time the number of titles changes. Although the screen can be produced relatively easily, only the title can be searched and selected on the re-created menu screen, and the search for the video to be viewed within the title and the cue playback can be quickly performed. You can't do that.

In addition, the prior art described in Patent Document 2 uses the menu information included in one actual information of a plurality of actual information compressed by different compression methods as the menu information of other actual information, thereby It is intended to reduce the processing load related to the construction, and does not enable a quick search for a video or the like to be viewed in a title and a cue playback.

In addition, with the conventional technique described in Patent Document 3, it is possible to restore and replay a screen that has been reproduced in the past, but it is not possible to quickly search for a video or the like to be viewed in the title and to quickly search for a cue.

In the prior art described in Patent Document 4, the user can appropriately determine the execution unit of the cueing operation, and can cue to the destination intended by the user in the determined execution unit. Is the operation of skipping to the next video etc. in the determined execution unit in order. In order to perform cue playback of the video etc. that you want to watch, you may need to skip multiple times. In some cases, it was not possible to quickly find the head of the book.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a DVD playback apparatus capable of quickly searching for data recorded on a DVD and performing cueing playback. .

In order to achieve the above object, the invention of claim 1 manages video file data including video file data composed of stream data having cells as structural units, and program chain information for managing the playback order of the cells. A DVD playback apparatus for playing back a DVD in which video file management information is recorded, and reads out the video file management information for managing the video file data of the title to be played back, and acquires program chain information included therein And cell identification information for identifying the cell included in each of all the cells indicated by the program chain information acquired by the program chain information acquiring means, and reading out still image data at the start of the cell Cell identification information acquisition means for acquiring; A cell selection menu screen for generating screen information of a cell selection menu screen composed of a reduced image of a still image at the start portion of all the cells and a selection button, using the obtained still image data of the start portion of all the cells. Information generation means, and display means for displaying the cell selection menu screen by giving the generated cell selection menu screen information to a display device, and the selection is performed according to a user operation on the cell selection menu screen A cell selection unit that allows the user to select one reduced image by moving the position of the button between the reduced images of the still images at the start of all the cells, and the button is selected using the cell selection unit. In order from the cell corresponding to the one reduced image, the video file data of the title is configured according to the acquired program chain information. Providing DVD reproducing apparatus characterized by comprising a reproduction control means for controlling so that the cell is reproduced is read.

According to this configuration, all the cells constituting the video file data of the title to be played back can be found from the program chain information included in the video file management information for managing the video file data of the title to be played back, and the start of all the cells A still picture data of a part is read out, and using the read still picture data of the start part of all the cells, a cell selection consisting of a reduced image of the still picture of the start part of all the cells and a selection button is selected. The menu screen is displayed. Since the selection button moves between the reduced images of the still images at the start portions of all the cells according to the user's operation, the user looks at the cell selection menu screen, and displays one reduced image among them. By selecting, it is possible to search and select one cell among all the cells constituting the video file data of the title to be reproduced.
Then, in order from the selected cell, the cells constituting the video file data of the title are read and reproduced according to the program chain information.

According to a second aspect of the present invention, video file data composed of stream data having a cell as a structural unit and video file management information for managing the video file data including program chain information for managing the reproduction order of the cells are recorded. A DVD playback device for playing back a DVD, which reads out video file management information for managing video file data of a title to be played back, acquires program chain information included therein, and acquires the program chain information Cell selection means for allowing the user to select one of all the cells indicated by the program chain information acquired by the means, and the cells selected using the cell selection means, in order, according to the acquired program chain information Title video file Providing DVD reproducing apparatus characterized by comprising a reproduction control means for controlling to cells constituting Rudeta is reproduced is read.

According to this configuration, from the program chain information included in the video file management information for managing the video file data of the title to be played back, all the cells constituting the video file data of the title to be played back can be found. One cell can be selected by the user. Then, in order from the selected cell, the cells constituting the video file data of the title are read and reproduced according to the program chain information.

According to a third aspect of the present invention, in the second aspect of the present invention, the cell selecting means identifies a cell included in each of all the cells indicated by the program chain information acquired by the program chain information acquiring means. Cell identification information acquisition means for reading out and acquiring identification information; and cell selection menu screen information generation means for generating screen information of a cell selection menu screen composed of images and selection buttons indicating the acquired cell identification information of all the cells. And display means for displaying the cell selection menu screen by giving the generated cell selection menu screen information to a display device, and the position of the selection button on the cell selection menu screen according to a user operation Is moved between the images showing the cell identification information of all the cells so that the user can select one image. And so, the reproduction control means is a DVD reproducing apparatus according to claim 2, wherein the controller controls so as to be reproduced in order from the cell corresponding to the one image selected.

According to this configuration, cell identification information of all the cells is read, and a cell selection menu screen including an image indicating the identification information of all the cells and a selection button is displayed. Since the selection button moves between images showing the identification information of all the cells according to the user's operation, the user looks at the cell selection menu screen and displays the identification information of one of the cells. By selecting an image to be shown, it is possible to search and select one cell among all the cells constituting the video file data of the title to be reproduced. Then, in order from the selected cell, the cells constituting the video file data of the title are read and reproduced according to the program chain information.

According to a fourth aspect of the present invention, in the third aspect of the invention, the cell identification information is still image data of a start portion of a cell, and an image indicating cell identification information of all the cells is a start of the all cells. It is a reduced image of a partial still image.

According to this, still image data at the start of all the cells is read, and a cell selection menu screen including a reduced image of the still image at the start of all the cells and a selection button is displayed. Since the selection button moves between the reduced images of the still images at the start portions of all the cells according to the user's operation, the user can visually recognize the still images at the start portions of all the cells. Thus, it becomes easy to select one cell among all the cells constituting the video file data of the title to be reproduced.

As described above, according to the present invention, the user can select one of all the cells constituting the video file data of the title to be played back, and the video file data of the title is constructed in order from the selected cell. Since a cell to be read is read out and played back, a DVD that can quickly search for data recorded on a DVD and perform cue playback on a cell-by-cell basis
A playback device can be realized.

In addition, according to the present invention, cell identification information of all the cells is read, and a cell selection menu screen including an image indicating the identification information of all the cells and a selection button is displayed. Since it moves between the images showing the identification information of all the cells according to the user's operation, the user can recognize a list of cells from which playback can be started and select a cell from which playback is to be started. Cue playback can be performed quickly.

According to the present invention, since the image showing the cell identification information of all the cells displayed on the cell selection menu screen is a reduced image of the still image of the start portion of all the cells, A list of still images of titles to be played back that can be started can be recognized, and it becomes easy to select a cell to start playback and quickly perform cue playback from that cell.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing an electrical configuration of a DVD recorder (DVD playback apparatus) according to an embodiment of the present invention.

In FIG. 1, 1 is a DVD recorder, and 10 is a DVD on which data such as an application is recorded based on the DVD-VR standard. The DVD recorder 1 has an operation input for operating the DVD recorder 1 when a user operates an operation key (not shown) provided on a remote control device (not shown) or a front panel (not shown). In response to a given operation input signal from the key operation input unit 2 and the key operation input unit 2, a control signal or the like corresponding to the content of the operation input signal is output to control each part of the DVD recorder 1, A control unit 3 that performs various arithmetic processes and the like is provided.

Also, the DVD recorder 1 includes a ROM (Read Only Memory) 4 that stores programs and data necessary for control and processing operations of the control unit 3, and a RAM (Random Access Memory) used as a working memory during the processing operations. 5) A disk drive unit 6 in which the DVD 10 is loaded, and the loaded DVD 10 is rotated and irradiated with a laser beam to write data to the recording area of the DVD 10 and read the recorded data.
It has.

The DVD recorder 1 receives video signals (video signals and audio signals) from other devices (external input devices, tuners, etc.), converts the input video signals into digital signals, and further converts the digital signals. An encoding unit 7 that generates encoded digital data and supplies it to the disk drive unit 6, and the digital data output from the disk drive unit 6 is combined into a digital signal, and the digital signal is converted into an analog signal for analog video A decoding unit 8 that generates a signal and outputs the signal to an external television receiver (not shown) (display device: hereinafter referred to as an external TV), and on-screen image information based on image information from the control unit 3, and the decoding unit OSD (On Screen Display) that can be superimposed on the analog video signal from 8 and sent to an external TV And a display unit 9.

The control unit 3 includes a PGC (Program Chain) information acquisition unit 31, a cell identification information acquisition unit 32, a cell list (cell selection menu) screen information generation unit 33, and a reproduction control unit 34. These can be realized by a program for operating the control unit 3.

The DVD recorder 1 having such a configuration converts a video signal input to the encoding unit 7 into digital data and records it on the DVD 10 or reads out the digital data recorded on the DVD 10 in accordance with a user operation. It can be reproduced and output as a signal.

Next, the logical structure of the application recorded on the DVD 10 will be described. DVD
The unit for each application is called a title, and each title is composed of a program and a program playback path. Note that, as a superordinate concept of titles, a title set that defines a plurality of titles sharing video information with each other is set.

A program is a logical playback unit of video information and audio information, and is called MPEG.
It is composed of system streams. The reason why the program is set as the logical playback unit is to share the cells in different playback paths, and the playback order of the cells in the system stream is defined by the system stream playback control information. Here, the system stream reproduction control information is referred to as a program chain (PGC). Such P
The GC is logically connected to each other by a link from a program including a branch, thereby constructing a reproduction path including the branch.

FIG. 2 is a diagram showing a file structure of recorded information recorded on the DVD 10. As shown in the figure, the recording information is roughly divided into a disc information file and a plurality of video files.

FIG. 3 is a diagram showing a data structure of the disc information file shown in FIG. The disc information file includes a file management table indicating the internal configuration of the disc information file, disc configuration information for managing information such as the name, storage location, and title name of the video file, and the user selects a title set at the start of disc playback. Title menu configuration information (menu information) and menu configuration information used for subtitle and audio language selection in each title set are stored.

In addition, each title set is stored in the video file, and is composed of video file management information and video file data. FIG. 4 shows the data structure of such a video file. Here, all the MPEG system streams constituting the title set are stored in the video file data. The MPEG system stream is composed of a series of cells as described above. The cell has a configuration in which 2 KB blocks are included in one pack, and moving image information, audio information, and management information are interleaved. Video information is GO
It is composed of inter-frame video data compression / decompression units called P (Group of pictures). Management information is interleaved for each GOP as a management pack prior to this GOP.

In the video file shown in FIG. 4, the video file management information is composed of a video file management table, a title management information, and a PGC information table. Here, the video file management table is header information of this file, and stores pointers to the PGC information table and title management information.

FIG. 5 is a diagram showing a data structure of the PGC information table shown in FIG. As shown in the figure, the PGC information table is composed of a plurality of PGC information. Here, each PGC information is
System stream playback control information in the title set is defined, and includes original PGC information and playlist PGC information. The original PGC information is composed of the total number of programs stored in the PGC, the total number of cells stored in the PGC, the total playback time of the PGC, and the PGC control information. The playlist PGC information is stored in the playlist PGC. It consists of the number of cells and PGC control information.

The playlist is a list in which a video range and a playback order are specified in order to realize a function that can be called virtual editing, which is a major feature of the DVD-VR standard. Editing can be easily performed to create a program in which only the (commercial) part is cut, or to create a plurality of playlists and display one original video in various ways.

A program is generally called a chapter in a movie application and an index in a music application, and a single PGC usually includes a plurality of programs. The number of programs is defined as the number of stored programs in FIG. Further, the ascending / descending order of each program is stored as PGC control information described later. That is, the cell number of the first cell in each program is sequentially stored in the PGC control information, and the entry number of this cell number corresponds to the program number of each program.

Further, the PGC control information defines cells to be stream-reproduced in one PGC and the reproduction order thereof. Specifically, the PGC control information is composed of a plurality of storage cell information entries, and the storage cell information is the playback time for the cell to be played back, the offset to the cell data entity stored in the video file data, Stores the number of logical blocks occupied by cell data. The cell playback order is specified by the entry order of the stored cell information.

FIG. 6 is a diagram showing a data structure of the title management information shown in FIG. The title management information is information for managing a plurality of titles constituting the title set, and includes a head PGC information table that defines a PGC corresponding to the head position of each title. Such leading P
The GC information table includes the number of titles in the title set and title head PGC pointer information. Here, in the title head PGC pointer information, an offset from the file head to the corresponding PGC information is stored in the number of logical blocks.

In the above data structure, when specifying the PGC, the PGC number in the PGC information table is referred to, and when specifying the program, the cell entry number in the PGC control information is referenced. The

Next, the DV shown in FIG. 1 when data recorded on the DVD 10 with the above-described configuration is reproduced.
An example of the reproduction operation of the D recorder 1 will be described with reference to the flowchart of FIG.

First, when a user operates an operation key or the like to give a reproduction start instruction for the DVD 10 to the key operation input unit 2, the key operation input unit 2 gives a reproduction start instruction signal to the control unit 3 (step S1).
.

The control unit 3 given the reproduction start instruction signal drives the disk drive unit 6 to
Read the disk information file of D10. As described above, menu information for selecting a title is stored in the disc information file, and the control unit 3 controls the OSD display unit 9 based on the read menu information to reproduce the title to be reproduced. A title list screen for allowing the user to select is displayed on the external TV (step S2). At this time,
The control unit 3 generates title list screen information which is on-screen image information and becomes the title list screen based on the read menu information and gives it to the OSD display unit 9, and the title list screen information is received from the OSD display unit 9. Sent to an external TV.

For example, here, it is assumed that six titles “title 1” to “title 6” are recorded on the DVD 10. In this case, a title list screen as shown in FIG. This title list screen is, for example, six reduced images obtained by reducing the still image at the start of each title and a selection button in one menu screen. The selection button includes these six reduced images. Each of the buttons is composed of a highlight button for making the brightness (highlight) high. This highlight button is used to increase the brightness of one of the reduced images between the six reduced images when an operation key (for example, a cross key or a cursor movement key) of the key operation input unit 2 is operated. To move. The selection button is not limited to the highlight button as described above. For example, any one of the six reduced images is selected.
It may be a frame button that borders one with a specific color.

When the user selects and decides a title to be played back (step S3), the selection decision signal is transmitted from the key operation input unit 2 to the control unit 3, and then the control unit 3 displays a playback method selection screen on the external TV. It is displayed (step S4). This playback method selection screen is, for example, a small menu screen as shown in FIG. 8B that pops up when the user selects and determines the title to be played back. At this time, the control unit 3 generates reproduction method selection screen information that is on-screen image information and serves as a reproduction method selection screen, and supplies the reproduction method selection screen information to the OSD display unit 9. Sent to an external TV.

For example, when the user wants to play “Title 3”, the user moves the highlight button to the position of the reduced image of “Title 3” by a key operation (for example, pressing the cross key or the cursor movement key). Is selected and determined by the key operation (for example, pressing the enter key or the enter key). Then, the reduced image of each title other than the reduced image of “title 3” is not displayed, or the luminance thereof is further lower than the luminance before the selection decision, so that “title 3”
Is notified to the user, and the small menu screen is displayed at a position other than the position where the reduced image of “Title 3” is displayed.

In this small menu screen, as shown in FIG. 8B, three text images “play from beginning”, “resume playback”, and “play from cell” and a selection button are combined into one small menu screen. Thus, like the selection button on the title list screen, this selection button is composed of a highlight button that makes any one of these three text images high-intensity. This highlight button makes any text image high in brightness between the three text images when an operation key (for example, a cross key or a cursor movement key) of the key operation input unit 2 is operated. To move. The selection button is not limited to the highlight button as described above, and may be a frame button that borders one of the three text images with a specific color, for example.

Here, “Play from beginning” is a playback method that plays from the beginning of the selected title, and “Resume playback” is playback from the position where playback was stopped when the title was played back last time. This is a playback method. “Play from cell” is a characteristic playback method of the present invention, in which playback is performed from a cell selected by the user among all the cells constituting the selected title.

When the user selects and decides “play from cell” as the playback method he wants to play (step S5), a selection decision signal of “play from cell” is transmitted from the key operation input unit 2 to the control unit 3, and the control unit 3 Then, the PGC information acquisition means 31 is used to drive the disk drive unit 6 to read the video file management information of the video file of the selected title (here, “title 3”) from the DVD 10 and to manage the title of the video file management information. Top P in the information
With reference to the GC information table, the PGC of the title to be reproduced (here, “title 3”) is obtained, and the PGC information is obtained from the PGC information table (step S6). At this time, PGC
As information, when the PGC information table includes a plurality of playlist PGC information, the playlist PGC corresponding to the playlist is selected by causing the user to select a desired playlist.
Get information. At this time, the control unit 3 transfers the acquired PGC information to the RAM 5 and holds it.

Next, the control unit 3 uses the cell identification information acquisition unit 32 to store the PGC stored in the RAM 5.
Still image data (cell identification information) at the start of the cell indicated by all the stored cell information included in the information is read from the video file data recorded on the DVD 10. Then, cell list screen information of a cell list screen (cell selection menu screen) in which thumbnail images obtained by reducing the still images of all cells and the selection buttons are combined into one menu screen from the read still image data of all cells. Is generated by the cell list screen information generating means 33 and given to the OSD display unit 9. As a result, a cell list screen as shown in FIG. 8C is displayed on the external TV (step S7).

For example, when the cells included in the PGC information read out as described above are six cells “cell 1” to “cell 6”, the cell list screen displays each of the six cells. Six thumbnail images (reduced images) obtained by reducing the still images at the start portion and a selection button are combined into one menu screen. These selection buttons are the same as the selection buttons on the title list screen. The highlight button is used to make one of the thumbnail images high in brightness. This highlight button allows any one of the thumbnail images to have high brightness between the six thumbnail images when an operation key (for example, a cross key or a cursor movement key) of the key operation input unit 2 is operated. To move. The selection button is not limited to the highlight button as described above, and may be a frame button that borders one of the six thumbnail images with a specific color, for example.

When the user selects and decides a cell to be reproduced (step S8), a cell selection decision signal is transmitted from the key operation input unit 2 to the control unit 3, and the control unit 3 reproduces the PGC information stored in the RAM 5. According to the order, the disc drive unit 6 is used by using the playback control means 34 so that the stream data of the program is read and played back in order from the selected cell.
Then, the decoding unit 8 is controlled to perform reproduction (step S9). This allows external TVs to
A video signal obtained by decoding the stream data of the cells read in order by the decoding unit 8 is given, and the video of “title 3” and the like are reproduced from the scene of the selected cell. That is, cue playback from a scene desired to be viewed in “title 3” is performed.

For example, the user looks at the cell list screen of “title 3” shown in FIG.
, The user moves the highlight button to the position of the thumbnail image of “Cell 2” by a key operation (for example, pressing a cross key or cursor movement key)
The selection is made by another key operation (for example, pressing the enter key or the enter key). Then, FIG.
As shown in (d), the image of “Cell 2” of “Title 3” is displayed in full screen,
Playback of “Title 3” starts from the scene of the image.

In step 5, when the user selects and determines “play from the beginning” or “resume playback” as the playback method that the user wants to play, the control unit 3 The video file management information of the video file of the selected title is read from the DVD 10 by driving the disk drive unit 6, and the PGC of the title to be reproduced is obtained by referring to the head PGC information table in the title management information of the video file management information. , PGC information is acquired from the PGC information table. At this time, when the PGC information table has a plurality of playlist PGC information as PGC information, the user is made to select a desired playlist, and the playlist PGC information corresponding to the playlist is obtained and read. The PGC information is transferred to the RAM 5 and stored.

However, in this case (when “Play from beginning” or “Resume playback” is selected and determined)
The controller 3 controls the disk drive so that the stream data of the program is read out and played back in order from the entry point stopped at the beginning or the previous playback according to the playback order indicated by the PGC information stored in the RAM 5. The unit 6 and the decoding unit 8 are controlled to perform reproduction. Accordingly, the external TV is given a video signal obtained by decoding the read stream data by the decoding unit 8, and the video of the selected title is reproduced from the first scene or the scene stopped at the previous reproduction. Will be.

As described above, the DVD recorder 1 according to the present embodiment can display a cell list screen displaying thumbnail images of the start portions of all the cells constituting the title to be reproduced during reproduction. Thereby, the user can search the scene to view by looking at the displayed cell list screen. Further, the cell list screen has a selection button for moving between thumbnail images displayed by the user's operation, so that the user can select one of the scenes to be viewed from the displayed thumbnail images. A thumbnail image can be selected. Then, playback is started in order from the cell indicated by the selected thumbnail image. That is, the user can immediately cue and reproduce from the scene to be viewed in the title to be reproduced.

In general, different cells often have different scenes.
The scenes in the title can be displayed and selected in units of cells, and quick cue playback from the selected cell can be performed. This allows the user to search for the scene that he / she wants to watch and to quickly search from that scene. It is very effective in doing.

In this embodiment, the DVD recorder has a recording / reproducing function.
Needless to say, the present invention can be applied to a VD player or the like.

In addition, it should be considered that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a block diagram which shows the electric constitution of the DVD recorder (DVD reproducing | regenerating apparatus) of one Embodiment of this invention. It is a figure which shows the file structure of the recording information currently recorded on DVD shown in FIG. It is a figure which shows the data structure of the disc information file shown in FIG. It is a figure which shows the data structure of the video file shown in FIG. It is a figure which shows the data structure of the PGC information table shown in FIG. It is a figure which shows the data structure of the title management information shown in FIG. 2 is a flowchart showing an example of a reproduction operation of the DVD recorder shown in FIG. It is a figure which shows the example of a display screen during the reproduction | regeneration operation | movement shown in FIG.

Explanation of symbols

1 DVD recorder (DVD playback device)
2 Key operation input unit 3 Control unit 4 ROM
5 RAM
6 disk drive unit 7 encoding unit 8 decoding unit 9 OSD display unit (display means, cell selection means)
10 DVD
31 PGC (program chain) information acquisition means 32 Cell identification information acquisition means (cell selection means)
33 Cell list (cell selection menu) screen information generation means (cell selection means)
34 Reproduction control means

Claims (4)

DVD reproduction for reproducing a DVD in which video file data composed of stream data having a cell as a unit and video file management information for managing the video file data including program chain information for defining the reproduction order of the cells is recorded. A device,
Program chain information acquisition means for reading video file management information for managing video file data of a title to be reproduced and acquiring program chain information included therein;
Cell identification information for identifying the cell included in each of the cells indicated by the program chain information acquired by the program chain information acquisition means, and reading and acquiring still image data of the start portion of the cell Using the identification information acquisition means and the acquired still image data of the start portions of all the cells, the screen information of the cell selection menu screen composed of the reduced images of the still images of the start portions of all the cells and the selection buttons is obtained. Cell selection menu screen information generating means to be generated, and display means for displaying the cell selection menu screen by giving the generated cell selection menu screen information to a display device, and a user operation on the cell selection menu screen In response, the position of the selection button is moved between reduced images of still images at the start of all the cells. A cell selecting means for a user to select one of the reduced image so as to,
Control is performed so that cells constituting the video file data of the title are read and played in order from the cell corresponding to the one reduced image selected using the cell selection means, according to the acquired program chain information. Playback control means to
A DVD playback apparatus comprising: DVD reproduction for reproducing a DVD in which video file data composed of stream data having a cell as a unit and video file management information for managing the video file data including program chain information for defining the reproduction order of the cells is recorded. A device,
Program chain information acquisition means for reading video file management information for managing video file data of a title to be reproduced and acquiring program chain information included therein;
Cell selection means for allowing the user to select one of all the cells indicated by the program chain information acquired by the program chain information acquisition means;
Reproduction control means for controlling the cells constituting the video file data of the title to be read and reproduced in accordance with the acquired program chain information in order from the cells selected using the cell selection means;
A DVD playback apparatus comprising: The cell selection means includes
Cell identification information acquisition means for reading out and acquiring cell identification information for identifying the cells included in each of all the cells indicated by the program chain information acquired by the program chain information acquisition means;
Cell selection menu screen information generating means for generating screen information of a cell selection menu screen composed of an image indicating cell identification information of all the acquired cells and a selection button;
Display means for displaying the cell selection menu screen by giving the generated cell selection menu screen information to a display device;
On the cell selection menu screen, in response to a user operation, the position of the selection button is moved between images indicating cell identification information of all the cells. 3. The DVD according to claim 2, wherein the reproduction control unit performs control so that reproduction is performed in order from a cell corresponding to the selected one image.
Playback device. The cell identification information is still image data of a start portion of a cell, and an image indicating the cell identification information of all cells is a reduced image of a still image of the start portion of all cells. The DVD playback device according to claim 3.

Images