JP3195284B2 - Moving image playback control method and image display device to which the method is applied - Google Patents

Moving image playback control method and image display device to which the method is applied

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Publication number
JP3195284B2
JP3195284B2 JP32859597A JP32859597A JP3195284B2 JP 3195284 B2 JP3195284 B2 JP 3195284B2 JP 32859597 A JP32859597 A JP 32859597A JP 32859597 A JP32859597 A JP 32859597A JP 3195284 B2 JP3195284 B2 JP 3195284B2
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JP
Japan
Prior art keywords
information
scene
moving image
hypermedia
video
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP32859597A
Other languages
Japanese (ja)
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JPH11161663A (en
Inventor
祥子 安川
Original Assignee
株式会社東芝
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Publication date
Application filed by 株式会社東芝 filed Critical 株式会社東芝
Priority to JP32859597A priority Critical patent/JP3195284B2/en
Priority claimed from US09/200,801 external-priority patent/US6580870B1/en
Publication of JPH11161663A publication Critical patent/JPH11161663A/en
Application granted granted Critical
Publication of JP3195284B2 publication Critical patent/JP3195284B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/91Television signal processing therefor
    • H04N5/92Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/9201Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34Indicating arrangements

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving image reproduction control method and an image display device to which the method is applied, and more particularly to a method for controlling the reproduction of a moving image.
The present invention relates to a moving image reproduction control method and an image display device for interactively reproducing moving image data such as VD video.

[0002]

2. Description of the Related Art In recent years, with the development of computers and multimedia technologies, various computer systems compatible with so-called multimedia have been developed. This type of computer system is provided with a function for reproducing moving images and audio data in addition to text data and graphics data.

[0003] With the development of multimedia in such computers, DVDs have recently attracted attention as new storage media that can replace CD-ROMs. One DVD
-ROM media can record about 4.7 Gbytes of data, which is about seven times the size of current CD-ROMs on one side, and about 9.4 Gbytes of data can be recorded on double-sided recording. By using this DVD-ROM medium, a moving image such as a movie including a large amount of video information can be reproduced on a computer with high quality.

The data structure of video information recorded on DVD-ROM media is defined by the DVD video standard. Video information is roughly classified into two types of data: presentation data and navigation data.

[0005] Presentation data is a set of video objects to be reproduced, and is composed of video, sub-picture, and audio. Video data is compression-coded by the MPEG2 system. In addition, as a coding method of sub-picture and audio, run-length coding, AC-3, and the like are supported. The sub-picture is bitmap data, and is used for displaying subtitles of a movie or displaying options on a menu screen. One video object can include one channel of video data, up to eight channels of audio data, and up to 32 channels of sub-picture data.

[0006] The navigation data is playback control data for controlling the playback procedure of the presentation data. At the time of title playback, the navigation data is interpreted to determine the playback order and playback method of the moving image data, and the playback of the moving image is performed accordingly. Further, a navigation command can be embedded in the navigation data. The navigation command is used to change the reproduction content and the reproduction order of the video data. By using the navigation command, the title creator can define various branch structures in the title. It is possible to create interactive titles.

[0007]

[0006] While such DVD-Video standard titles have begun to appear on the world, recently, the distribution of information using the Internet has been active. With the spread of the Internet, it is possible to view all kinds of information in various parts of the world with a WWW browser.

[0008] Under such an environment, the creation of new contents combining the DVD video title and the Internet technology has been demanded. However, since the DVD video and the Internet are completely independent technologies, and the DVD video standard is defined very finely, it is difficult to modify the standard for integrating with the Internet. For this reason, at present, it is very difficult to integrate the DVD video title with the Internet.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has been made to make it possible to integrate a DVD video title with the Internet only by effectively using the DVD video standard and by simply expanding the standard without changing the standard. It is an object of the present invention to provide a moving image reproduction control method and an image display device capable of realizing a new service in which a DVD video title and hypermedia contents such as HTML files provided on the Internet are integrated.

[0010]

In order to solve the above-mentioned problems, according to the present invention, management information for controlling reproduction of a moving image is provided in a predetermined format.
Moving image titles inserted multiple times in video data playback units
From the storage medium in which the stream data of the
Image that reads out the trim data and displays the moving image on the screen
A moving image playback control method for a display device, comprising:
For each scene where media information should be displayed in conjunction,
In the management information corresponding to the video data playback unit that constitutes
Knowledge for acquiring the hypermedia information from outside
Other information is embedded in advance, and the
During playback, it is embedded in the management information corresponding to the currently playing scene.
Hypermedia specified by the embedded identification information
Obtain information from outside, and obtain the obtained hypermedia
Displaying information on the screen simultaneously with the scene being played back.
Features.

In this moving image reproduction control method, a DVD
1 GOP or 2 in video stream of video standard
Focusing on the fact that management information called navigation back is included in video data units of GOP (0.4 second to 1 second), identification information for acquiring hypermedia information in an empty area of the management information The method of embedding is adopted. Thereby, since the identification information of the hypermedia information corresponding to the scene being reproduced can be recognized in real time, for each moving image of the scene being reproduced,
Hypermedia information such as HTML content corresponding to the information can be sequentially acquired through the Internet and displayed in conjunction with the scene being reproduced.
A new service that combines a DVD video title with HTML content provided on the Internet can be realized.

[0012] The HT related to the moving picture corresponding to the scene being reproduced can also be expanded by expanding the navigation command defined in the DVD video standard.
The ML content can be displayed on the screen.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a basic configuration of hardware and software of an image display device according to an embodiment of the present invention.

This image display device is used as a digital video player, a set-top box, or a personal computer, and has a function of displaying computer graphics, moving images, and the like on a dedicated display monitor or a home TV. .

This image display device has a main hardware necessary for reproducing DVD video information, such as a DV
DVD for reading information recorded on D media
A drive 111; an MPEG2 decoder 112 for decoding DVD video information (video, sub-picture, audio) composed of an MPEG2 program stream read from the DVD drive 111; a VGA controller 113 for controlling a display monitor; And communication device (ISDN card or modem) for Internet connection 10
0 and the like are provided.

The DVD medium stores, in addition to navigation data 301 and presentation data 302 constituting a DVD video title, an HTML file for display in conjunction with the DVD video. This HTML file is used, for example, as an initial screen for explaining the contents of a DVD video title and the like, and is downloaded to the memory of the image display device.

The reproduction of a title on a DVD-ROM medium is controlled by a DVD reproduction control program 116. The DVD playback control program 116 has an interface function with the WWW browser 117 to display HTML content on a screen in conjunction with DVD video playback.

The DVD playback control program 116 is actually composed of a group of drivers for controlling the above-mentioned various hardware, and an application program for playing back titles using the group of drivers. The functions of the program 116 are the navigation manager 201 and the presentation engine 20.
2 Navigation Manager 201
Decodes the navigation data 301 and the instruction from the user to determine how to reproduce the presentation data. The navigation manager 201 also has a function of extracting address information such as a URL indicating the location of the HTML content to be displayed in conjunction with the navigation data 301 and notifying the WWW browser 117 of the information. HTML related to video images
The URL indicating the location of the content is embedded in a free space of a navigation bag included in the MPEG2 stream in units of video data of 1 GOP or 2 GOPs (0.4 to 1 second). Whether or not to display the HTML content in conjunction is determined by an instruction from the user. The instruction from the user is the remote control driver 1
18 to the navigation manager 201. Further, the navigation manager 201 can be notified of an instruction from a user using a keyboard or a mouse.

The presentation engine 202 reproduces the title of a moving image in response to an instruction from the navigation manager 201. WWW browser 117 is HT
A WWW client for communicating with an external WWW server using a protocol called TP, receives an HTML file from the external WWW server via the communication device 100, and displays it on the screen using the VGA controller 113. .

In the system shown in FIG. 1, when an instruction to display HTML content is input from the user, the navigation manager 201 sends, from the navigation data 301, a URL indicating the location of the HTML content related to the moving picture image being reproduced. Take it out and WWW
Notify the browser 117. As a result, the HTML content specified by the URL is transmitted to the WWW browser 117.
And it is displayed on the screen together with the moving image. In this case, as described above, by embedding the URL in the free space of the navigation back, for each moving image corresponding to the scene being reproduced, the corresponding HT
Hypermedia information such as ML content can be sequentially acquired and displayed via the Internet. In addition, the URL of the HTML content related to the moving image corresponding to the scene being reproduced can be extracted from the navigation data 301 by extending the navigation command defined in the DVD video standard. Details of the URL embedding method will be described with reference to FIG.

Next, a specific system configuration of the image processing apparatus according to the present embodiment will be described. As shown in FIG. 2, the system includes a PCI bus 10, a CPU 11, a main memory (MEM) 12, an HDD 13, a DVD interface 16 composed of an ATAPI or SCSI interface, and an audio controller 17,
The aforementioned DVD drive 111, DVD decoder 112,
VGA controller 113, remote controller controller 11
4 and a communication device 100 are provided.

The DVD drive 111 converts the DVD video stream stored in the DVD medium into a DVD video stream of at most 10.
Read at a transfer rate of 08 Mbps. The DVD drive 111 includes a DVD medium composed of an optical disk, a motor, a pickup, a pickup drive, a servo controller, a drive controller including an ECC circuit for error detection and correction, and the like.
The motor, pickup, pickup drive, servo controller and drive controller are DVD
The medium functions as a drive device for driving the medium and reading data recorded on the DVD medium.

For DVD media, for example, 13
A movie of about 5 minutes can be recorded. The presentation data making up the movie information can include main video (video), sub-video (sub-picture) up to 32 channels, and audio (audio) up to 8 channels.

According to the MPEG2 standard, data encoded by MPEG2 can include other encoded data, and the encoded data is handled as one MPEG2 program stream.

[0025] MPEG2 is used for video encoding.
Run-length coding and DOLBY AC3 are used for sub-picture and audio coding, respectively. Even in this case, the encoded video, sub-picture, and audio are treated as one MPEG2 program stream.

The encoding processing of the MPEG2 standard is variable rate encoding, and the amount of information to be recorded / reproduced per unit time can be made different. Therefore, the higher the moving rate of the scene, the higher the transfer rate of the MPEG stream constituting the frame group corresponding to the scene, the higher the quality of the moving image can be reproduced.

FIG. 3 shows a DVD used in this embodiment.
An example of a recording format of video information is shown.
This recording format corresponds to the DVD video standard.

As shown in FIG. 3, a DVD-RO
The volume space of M media is a volume / file structure for volume and file management, DV
DVD video zone constituting D video information, and D
It is composed of other file areas other than the VD video, and the other file areas store HTML files for the above-mentioned initial screen and the like.

The DVD video zone includes a video manager (VMG) and one or more DVD video title sets (VTS # 1 to VTS # n). VMG
Contains the video manager information (VMG
I), video object set for menu (VOB)
S), and video manager information (VMGI) for backup.

VMGI includes all DVD video title sets (VTS # 1 to # VTS #) existing on DVD media.
n) is used as table of contents information, and includes search information and parental attribute information for each video title set (VTS). When the VMG includes a video object set (VOBS) for a menu, the VMGI uses the program information (PG) as information for controlling reproduction of the menu.
CI). The PGCI indicates the playback order of a plurality of cells constituting each video object (VOB) for a menu, and the title creator specifies here the navigation commands (pre-command, post-command, button command, cell command). ) Can be embedded.

The pre-command is a navigation command group to be executed before starting reproduction of a cell group (cells in the PGC) whose reproduction order is defined by the PGCI.
This is used for initial setting before PGC reproduction. The post command is a navigation command group that is executed when the reproduction of all the cells in the PGC is completed, and is used for processing the PGC to be reproduced next. The cell command is a navigation command group that is executed when the reproduction of the corresponding cell in the PGC is completed, and is used for repetitive reproduction of a specific cell. The button commands are a group of navigation commands that are executed when a button that is a selection item on the menu screen is determined by a user operation, and is used for executing a menu item.

Each video title set (VTS) includes video title set information (VTSI),
Video object set for menu (VOBS),
Video object set (VOB) constituting the title
S) and video title set information (VTSI) for backup.

The VTSI is playback control information of a menu and a title in the VTS, and includes search information of the title and program chain information (PGCI) for managing a cell playback order in the menu and the title. This PGCI also has the navigation commands (pre-command, post-command,
Button command, cell command).
Also, a plurality of URLs indicating the location of the HTML content related to the video of each scene in the title can be embedded in the PGCI in the VTS.

A video object set (VOBS) constituting a title includes a large number of video objects (cells # 1, # 2,...) Called cells. Each cell (video object) is composed of a number of video object units, and the head of the cell is a navipack (NAVI).
Exists. That is, one cell (video object) is from the navi pack to the next navi pack. This Navipack is 1 GOP or 2 GOP
(0.5 second to 1 second) in video data units. Each navigation pack is management information for controlling reproduction of a corresponding video object, and is composed of a disc search information (DSI) pack and a presentation control information (PCI) pack. The DSI pack is used as search information of a reproduction start address at the time of special reproduction such as fast forward and rewind. The PCI pack is provided with a navigation command (button command) according to an angle switch at the time of multi-angle reproduction and an instruction from a user.
Is used to display highlight information for executing In the present embodiment, a URL indicating the location of the HTML content related to the video of the corresponding video object is embedded in a free area of the DSI pack or the PCI pack.

One cell is used for a certain period of time, for example, 0.
It constitutes information for 15 frames required for moving image reproduction for 5 to 1 second. As described above, the GOP (Group of pic) of the MPEG2 program stream is used.
cure). In each cell, a video pack (V), a sub-picture pack (S), and an audio pack (A) are multiplexed and recorded.
The video pack (V), sub-picture pack (S), and audio pack (A) are encoded video, sub-picture, and audio data units, respectively. The data size of these packs is fixed, but the number of packs that can be included in one cell is variable. Therefore, a cell corresponding to a scene with more rapid motion includes a larger number of video packs.

In the above format, VMG
I, VTSI, PGCI, PCI, and DSI make up navigation data, and video packs, sub-picture packs, and audio packs for each menu and title make up presentation data.

In this embodiment, the PGCI or PCI
The button commands and the like in the above navigation commands embedded in the VTS also include the PGCI and V in the corresponding VTS.
It is used as a command to specify a URL embedded in the PGCI in the MG. As a result, it is possible to display a button indicating linkage with the HTML content on the moving image reproduction screen, and when the button is selected, execute the command to acquire the corresponding HTML content from the outside and display it on the screen. .

Next, each unit of the system shown in FIG. 2 will be described. The CPU 11 controls the operation of the entire system, and executes an operating system and an application program to be executed stored in a system memory (MEM) 12. The reproduction of the DVD video title recorded on the DVD medium is performed by the CPU.
11 is started by causing the DVD playback control program 116 to execute.

The DVD interface 16 is an HDD or C
A peripheral interface for connecting a peripheral device such as a D-ROM to the PCI bus 10. In this embodiment,
Data transfer with the DVD drive 111 is performed.

The audio controller 17 includes a CPU 1
1 controls the input / output of sound data under the control of the PCM sound sources 171 and F for sound output.
An M sound source 172, a multiplexer 173, and a D / A converter 174 are provided. The output from the PCM sound source 171 and the FM sound source 172 and the digital audio data transferred from the DVD decoder 112 are input to the multiplexer 173, and one of them is selected.
Note that the function corresponding to the D / A converter of the audio controller 17 is also provided in the DVD decoder 112, and the audio controller 17 is not used, and
An analog audio signal can be directly output.

The digital audio data is obtained by decoding audio data read from the DVD drive 111. The audio bus 18a is used for transferring digital audio data from the DVD decoder 111 to the audio controller 17, and the PCI bus 10 is not used. Therefore, digital audio data can be transferred at a high speed without affecting the performance of the computer system.

The DVD decoder 112 is controlled by the CPU 11 through the memory 12 or the DVD-RO
After reading the MPEG2 program stream directly from the M drive 111 and separating it into video, sub-picture, and audio packets, they are decoded, synchronized, and output. The DVD decoder 112 includes a transaction control unit,
It has a FIFO buffer and an MPEG2 decoder. The transaction control unit includes the DVD decoder 11
2 to operate as a bus master (initiator) for issuing a transaction on the PCI bus 10, the memory 12 or the DVD-ROM drive 11
1 executes a bus cycle for reading the MPEG2 program stream. This MPEG2 program stream is sent to an MPEG2 decoder via a FIFO buffer, where it is separated into video, sub-picture, and audio packets and their decoding processing is performed.

The decoded audio data is transferred to the audio controller 17 via the audio bus 18a as digital audio data as described above, or is directly output to an external DSP or the like. The decoded video and sub-picture are combined and sent to the digital YUV input port of the VGA controller 113 as digital YUV data. In this case, from the DVD decoder 112 to the VGA controller 11
Transfer of digital YUV data to the video bus 1
8b is used, and the PCI bus 10 is not used. Therefore, similarly to digital audio data, transfer of digital YUV data can be performed at high speed without affecting the performance of the computer system.

As the video bus 18b, a VESA standard VEFC (VESA Advanced Feature) is used.
re Connector), VM-Channel
(VESA Media Channel), S3L
A BP interface, a ZV port, or the like can be used.

The VGA controller 113 is connected to the CPU 11
Under the control of the system, the CRT display and the LCD used as the display monitor of this system are controlled, and the VGA specification text and graphics display and the moving image display are supported. As shown, the VGA controller 113 includes a graphics display control circuit 191, a video display control circuit 192, a multiplexer 193, a D / A converter 194, and the like.

The graphics display control circuit 191 controls V
This is a GA compatible graphics controller, which converts VGA graphics data drawn in a video memory (VRAM) 20 into RGB video data and outputs it.
The video display control circuit 192 includes a video buffer for storing digital YUV data, and a Y buffer stored in the buffer.
YUV-R that converts UV data to RGB video data
It has a GB conversion circuit and the like.

The multiplexer 193 selects one of the output data of the graphics display control circuit 191 and the video display control circuit 192, or converts the output data from the video display control circuit 192 to VGA graphics such as HTML content from the graphics display control circuit 191. Are combined and sent to the LCD and D / A converter 194. The D / A converter 194 includes a multiplexer 194
From the video data into analog RGB signals,
Output to CRT display.

The VGA controller 113 also has a function of converting digital YUV data and audio data into NTSC TV signals and outputting the signals to a video input of an external TV receiver.

FIG. 4 shows an example of an interlocked display screen of the DVD video and the HTML content. FIG.
As shown in (a), a DVD video provided by the DVD playback control program 116 and an HTML provided by the WWW browser 117 are displayed on the screen.
Content is displayed at the same time. In this state, for example, when the user presses a Web display key provided on the remote control unit, the user performs a remote control operation to use HTML.
Input operation for specifying linked display of content, D
When an operation of selecting a Web button displayed on the video of the VD video with a remote controller, a keyboard, a mouse, or the like is performed, as shown in FIG. HTML content is automatically acquired from an external WWW server and displayed on a screen.

Of course, if the same HTML content is cached on a hard disk or the like, the HTML content is displayed on the screen without access to the WWW server. Also, the WWW browser 11
7 does not need to be activated in advance. That is, in this case, in a state where the WWW browser 117 is not started, the user performs an input operation for specifying the linked display of the HTML content by operating the remote controller, or selects the Web button displayed on the DVD video image. When such an operation is performed, at that time, for the first time, the HTML content related to the moving image currently being reproduced is automatically acquired from the external WWW server and displayed on the screen.

In the example shown in FIG. 4, the video of the scene being reproduced by the DVD video includes a car, and characters and images about the specifications of the car are displayed in conjunction with HTML content. Have been.

Next, the DVD video and the H
A specific method for the linked display processing with the TML content will be described. First, a method of giving a URL to a video object of the DVD video standard and a reproduction method in that case will be described.

As described with reference to FIG. 3, the DVD video standard includes a file group of video objects, which are video data, and control information files that describe management information of the data and a reproduction procedure. The video object is an MPEG2 program stream,
As described above, the sub-stream has PCI and DSI as management information of video data. Since the navigation pack including these always exists at the head of video data including video data of 1 GOP or 2 GOPs (0.5 second to 1 second) called a video object unit, the URL is stored in the reserved area of the PCI or DSI. By embedding, it is possible to specify an Internet address associated with the stream during playback.

A reproduction example in which the data is embedded will be specifically described below. When the Web button on the remote control is pressed during the reproduction of the DVD video, the related HTML content is displayed in the following procedure shown in the flowchart of FIG.

That is, the DVD reproduction control program 11
6 is a navigation pack (NV) of the video object unit currently being played when the button is pressed. PC
K) is obtained (step S101). Next, DVD
The reproduction control program 116 includes It is determined whether the PCK has an Internet address (URL) (step S102). If there is no Internet address, the reproduction is continued as it is (step S10).
3).

On the other hand, if the Internet address (UR
L), the DVD playback control program 11
No. 6 saves all the positions and states of the currently reproduced DVD video and enters a pause (or stop) state (steps S104 and S105). At the same time, the DVD playback control program 116 activates the WWW browser 117 using the Internet address as an argument, or passes the information as an Internet address to be displayed on the activated WWW browser 117 (step S10).
6). Then, when the WWW browser 117 is closed, when the start of reproduction is designated by the user, or after a certain time has elapsed, the DVD reproduction control program 116 resumes the reproduction of the DVD video.

The reason why the reproduction of the DVD video is temporarily interrupted is to prevent the contents of the DVD video from being overlooked. Of course, it is also possible to display the browser while continuing the reproduction of the DVD video.

Next, a description will be given of a reproducing method when a DVD-Video standard video object navi pack has an ID instead of the Internet address information (URL).

In this case, by referring to a correspondence table between the ID and the URL which is downloaded in advance in a specific external server such as a provider or an image display device,
The detection of the URL corresponding to the ID is performed. Of course, this correspondence table can be provided inside the DVD medium.

The processing after the Web button is pressed is described in FIG.
According to the procedure shown in the flowchart of FIG. That is, the DVD reproduction control program 116
When the button is pressed, first, the navigation pack (NV) of the video object unit currently being played back is displayed. PC
K) (step S201), and the NV PCK
It is checked whether or not an ID has been entered (step S202). If the ID is not entered, the reproduction is continued as usual (step S203).

On the other hand, if the ID is included, the ID is connected to an external server fixed in advance such as a provider by using the WWW browser 117 or the like, and the ID is sent there (step S204). In advance on the provider side,
By managing the ID and the Internet address information (URL) related to the ID, the related Internet address is searched from the ID, and the associated HTML file is automatically acquired and sent to the WWW browser 117. The display of the HTML content is performed by the WWW browser 117 (steps S206 and S2).
07). When the correspondence table between the ID and the URL is downloaded in the image display device, the DVD reproduction control program 116 may acquire the URL from the correspondence table and send it to the WWW browser 117.

The correspondence table between the ID and the Internet address information (URL) related to the ID may be as shown in FIG. FIG. 7 (A) shows the ID and U
RL is managed on a one-to-one basis. For example, TOKY
For the ID of O001, "http: // www
w. tokyo. co. jp /.../ tos001. h
tm "is searched.

FIG. 7B is an example in which a plurality of URLs are associated with each ID, and a command is used to find a URL of a link destination for the ID according to a condition.

In this example, “If Today> 9
For 81231 Jum 2 ", Today (quantified today's date) is 981231 (98/12/31)
If it is greater than (the date is later), "http:
// ... tos0002. http: //.../tos0001. ht
m ". Ju
mp2 means refer to the second parameter there.

Also, "If GPRMO> 3 Jump"
2 ″ is a GPR that is one of the general parameters of the DVD playback control program 116 or the image display device.
If the value of M [0] is greater than 3, "http: // ...
tos0002. http: //.../tos0001. htm ”. By transmitting such general parameters together with the ID, the country code registered in the image display device and the DVD currently being reproduced are displayed.
It is possible to change the URL of the link destination according to the parental level of the video.

Further, when the ID is acquired by the above-described reproduction method, the HTML content that is to be read is searched for, and the reading is started in advance at that time, so that the HTML content can be searched in advance. When the page is opened, the page can be displayed without delay. FIG. 7C shows an example of the correspondence table between IDs and URLs at this time, and the number of pages to be pre-read and the URLs are managed as a set for each ID.

For example, for ID = TOKYO001, the URL of the HTML content corresponding to the currently reproduced scene is “http: //.../tos0001.
"http" is registered, "3" is a number indicating the number of HTML contents related to a scene to be reproduced in the future, and "http: //.../tos0002." is a URL of each of the HTML contents.
htm "," http: //.../tos0003. ht
m ", and" http: //.../tos0004. h
tm "is registered. HTML to be read ahead
If there is no content, “0” is registered as a number indicating the number of HTML contents.

FIG. 8 is a flowchart showing the flow of processing when the table shown in FIG. 7C is used. FIG.
FIG. 8A shows processing on the server side, and FIG. 8B shows processing on the image display device side.

The DVD reproduction control program 116 first sends an ID (step S401). The server that has received the information starts searching for the related information from the ID, searches for the URL corresponding to the ID and the HTML file specified by the URL, obtains the HTML file if found, and obtains the URL and HTML file. Is transmitted to the image display device as related information corresponding to the ID (steps S301, S302, S303). When the URL address is transmitted, the DVD playback control program 116
Requests the WWW browser 117 to display the HTML file specified by the URL address (steps S402 and S403).

Next, the server refers to the table, acquires the number of URL addresses to be prefetched, and transmits it to the image display device (step S305). Next, if the number is not 0, the server sets the number of URs for that number.
The L address is transmitted to the image display device (step S3
05). The DVD reproduction control program 116 receives the number of URLs to be pre-read from the server. If the number is not 0, the DVD reproduction control program 116 receives the URL address and determines whether the HTML file corresponding to each of the URLs has already been cached in the image display device. Is checked (steps S404 to S404).
407).

If the file is already cached in the image display device, an HTML file corresponding to the URL is obtained from the server using the WWW browser 117, and is cached in the image display device (step S40).
8).

It should be noted that such prefetching is performed by using an ID and a URL.
HT corresponding to the currently reproduced scene, not only by registering the URL to be pre-read in the correspondence table of
This can also be realized by managing a table that associates the URL of the ML file with the URL of an HTML file related to a scene to be reproduced in the server, the image display device, or on the DVD medium. Further, a plurality of URLs including a URL to be pre-read may be registered in the navigation pack.

Next, a method of linking to a URL using a button command will be described. In the DVD video standard, a rectangle to be highlighted in the PCI and a navigation command (Na
button, etc., can be defined by describing the navigation command. This Navig
Although the command to link to the specified URL does not exist in the ation Command, it is possible to link to a URL when a button is selected by newly defining this command. Thereby, as described in FIG. 4, a button for linking to a URL (Web link button) can be displayed on the DVD video screen. At that time, when the button is selected and confirmed by a remote controller or the like, HTML content corresponding to the specified URL can be displayed.

Here, the navigation command of the DVD video standard will be briefly described. Navigation commands can be used in four types of command areas called a pre-command area, a post-command area, a button command area, and a cell command area.
The navigation command for each area is realized by a combination of 1 to 3 instructions. Instructions are roughly classified into the following six groups.

(1) Goto Instruction
Group: A plurality of navigation commands can be defined in the pre-command area and the post-command area. Goto Instruction G
The loop is used to change the execution order of the navigation commands, and is used for Goto Instrument.
Indicates the number of the next navigation command to be executed in the area to which the action group belongs.

(2) Link Instruction
Group: This instruction indicates a transition within the current domain. (3) Jump Instruction Group
p: This instruction indicates a transition beyond the domain.

(4) Compare Instruction
ion Group: This instruction instructs to compare values and execute the next Instruction if TRUE, and ignore if False.

(5) SetSystem Instruct
ction Group: This instruction
Instructs setting of navigation parameters. (6) Set Instruction Group:
This instruction is used to perform a specific operation.

The I classified into these six groups
One or more combinations of nstruction become one command. There are 15 combinations. As an example of such an extension of the navigation command, the following method is specifically conceivable.

(Part 1) “Extension of Existing Command such as Jump Command” FIG. 9
(A) is a Jump command existing in the navigation command of the DVD video standard. By specifying a Jump destination in the Jump operand, it is possible to jump to a title or a menu. FIG. 9C is also one of the Jump commands, and is a Compare & Jump command. If the result of the comparison is TRUE, the command is to jump.

9A and FIG. 9C.
The mp command is extended as shown in FIGS. 9B and 9D, respectively, to define a “JumpURL” command and an “EQ & JumpURL” command.

The “Operand” of the “JumpURL” command and the “EQ & JumpURL” command
Specifies that the address where the URL is described is specified. By doing so, when the button is pressed, the link can be made to the designated place. In particular, "E
In the case of the "Q &JumpURL" command, it is possible to dynamically change the URL of the link destination according to conditions.

When the Web link button is selected, these "JumpURL" commands and "EQ &Jump"
URL ”command is executed and the corresponding URL is PGC
I and the like are passed to the WWW browser 117 so that HTML content can be displayed.

(Part 2) “Method of Enlarging and Interpreting Linked PGC and Other Information Using Existing Command” There is a command for specifying a playback start position by linking to a PGC that manages the playback order of video objects. So, as a link destination of this command,
By using the area where the URL is written, the URL
Can be regarded as PGC. In other words, it is a method of expanding the unit for managing the playback order so that it is not a video object but external connection information. This allows the external format to be connected to other information without extending the existing format much. A new thing that can be displayed.

Hereinafter, a specific description will be given with reference to FIG.
FIG. 10A shows the structure of the PGC. Program
Chain General InFormatio
n is the structure of PGC Co in FIGS. 10 (b) and 10 (b).
FIG. 10C shows the configuration of the contents. FIG.
Since 0 (c) has a reserved area of 2 bytes, a pointer indicating the position where the URL is described is described therein as shown in FIG. 10 (d).

Thus, when the link command to the PGC is executed, the URL is taken out and the HTML corresponding to the URL is taken out.
Files can be obtained from the server and displayed. (Part 3) "A method of storing a URL table file together with a DVD video on a DVD medium and referring to a URL table downloaded in the image display device at the time of a Nop command" Is a Nop command, that is, a command to do nothing. When the Nop command is embedded, the command is defined as a link button to a URL. And every time the button is pressed, the UR
URLs are acquired one by one in order from the L table,
An HTML file corresponding to the URL is obtained from the server and displayed.

(Part 4) “A method in which the reproducing side ignores all button commands and refers to a table as the case may be” This is a modification of (Part 3), but all commands may be linked to a URL. As it is, go to the URL table,
Obtain the URL from the URL table.

Next, a method of reproducing a DVD video from an HTML file will be described. Reproduction of a DVD video from a designated position can all be realized by a navigation command. Therefore, the navigation commands are scripted so that they can be directly reproduced from HTML.

As a script in the HTML, when a certain button is pressed, <CallSSFPPGC> (the PGC to be played first when the medium is loaded)
(Meaning call (FPPGC) and play)
Thus, the reproduction can be resumed in the same manner as when the DVD medium is inserted. That is, this method controls the reproduction of DVD media mainly on the displayed HTML file, and embeds a tag designating the reproduction start position of DVD video in an HTML script. . According to this method, the linked display of the DVD video and the HTML content is also possible.

Although the above embodiment has been described on the assumption that HTML contents are obtained from an external server, a plurality of HTML contents are stored in a DVD medium in advance, and the HTML contents are stored in a DVD medium.
It can also be displayed in conjunction with video playback. Also,
DVD playback control program 11 for WWW browser function
6, it is also possible to incorporate it.

Further, when the user operates a button, H
Instead of requesting display of TML content, all HTML content may be automatically displayed in conjunction with DVD-Video playback.

[0092]

As described above, according to the present invention,
Without changing the DVD video standard, it is possible to integrate the DVD video title with the Internet only by effective use of the standard and simple extension.
Video titles and HTM provided on the Internet
It is possible to realize a new service that is integrated with hypermedia content such as an L file. In particular,
By adopting a method of embedding a URL in a navigation pack periodically included in a DVD video stream, the trouble of searching for the URL is eliminated, so that HTML is used.
Real-time display of content can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of hardware and software for realizing an image display device according to an embodiment of the present invention.

FIG. 2 is an exemplary block diagram illustrating an example of a specific hardware configuration of the image display apparatus according to the embodiment.

FIG. 3 is an exemplary view showing a format of video data used in the image display device of the embodiment.

FIG. 4 is an exemplary view showing an example of an interlocked display screen of a DVD video and HTML content by the image display device of the embodiment.

FIG. 5 is an exemplary flowchart illustrating a first procedure of a linked display process applied to the image display device of the embodiment.

FIG. 6 is an exemplary flowchart showing a second procedure of the linked display process applied to the image display device of the embodiment.

FIG. 7 is an exemplary view showing an example of a correspondence management table of IDs and URLs used in the image display device of the embodiment.

FIG. 8 is an exemplary flowchart showing a third procedure of the linked display processing applied to the image display device of the embodiment.

FIG. 9 is an exemplary view showing an extended example of a navigation command used in the image display device of the embodiment.

FIG. 10 is a PG used in the image display device of the embodiment.
The figure which shows the example of expansion of the structure of C and the command linked with it.

[Explanation of symbols]

 100 communication device 111 DVD drive 112 MPEG2 decoder 113 VGA controller 114 remote control controller 116 DVD playback control program 117 WWW browser 201 navigation manager 202 presentation engine 301 navigation data 302 presentation data

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. 7 Identification code FI G11B 20/12 G11B 20/12 27/00 27/00 D H04N 5/93 H04N 5/93 Z (56) References JP 9-162818 (JP, A) JP 9-128408 (JP, A) JP 9-247599 (JP, A) JP 9-200732 (JP, A) Tanaka, Takeuchi, Kuwahara Development and Standardization ”Hitachi Review, Vol. 79, no. 8, 1997, pp. 67-70 (Heisei 9-8-1) (58) Field surveyed (Int. Cl. 7 , DB name) G06F 17/30 G06F 12/00 G11B 20/12 G11B 27/00 H04N 5/93 JICST file ( JOIS)

Claims (14)

(57) [Claims]
1. A method according to claim 1, wherein the management information for controlling the reproduction of the moving image is a predetermined
Moving image titles inserted multiple times in video data playback units
From the storage medium in which the stream data of the
Image that reads out the trim data and displays the moving image on the screen
A moving image reproduction control method in the display device, the each to be interlocked display hypermedia information scene
Management information corresponding to the video data playback units that make up the scene
Obtain the hypermedia information from the outside in the report
Information is embedded in advance , and during playback of the moving image title,
Specify by identification information embedded in the corresponding management information
The obtained hypermedia information is obtained from the outside, and the obtained hypermedia information is read from the currently reproduced sheet.
Video playback control characterized by displaying on the screen at the same time
Method.
2. Management information for controlling reproduction of a moving image
Moving image titles inserted multiple times in video data playback units
From the storage medium in which the stream data of the
Image that reads out the trim data and displays the moving image on the screen
A moving image reproduction control method in the display device, the each to be interlocked display hypermedia information scene
Management information corresponding to the video data playback units that make up the scene
Insert the ID corresponding to the scene in the report in advance.
Can, during playback of the moving image title, in the image display device or
Or the ID managed in the external server to be connected
And address information indicating the location of hypermedia information
Refer to the correspondence table to correspond to the currently playing scene.
Hyper corresponding to the ID embedded in the management information
-Obtain media information from outside, and transfer the obtained hypermedia information
Video playback control characterized by displaying on the screen at the same time
Method.
3. Management information for controlling reproduction of a moving image
Moving image titles inserted multiple times in video data playback units
From the storage medium in which the stream data of the
Image that reads out the trim data and displays the moving image on the screen
A Contact Keru video playback control method in the display device, that every should be linked display hypermedia information scene
Management information corresponding to the video data playback units that make up the scene
Obtain the hypermedia information from the outside in the report
Information is embedded in advance , and during the reproduction of the moving image title, the identification information and the currently reproduced
Indicates the location of hypermedia information corresponding to the scene
Relating to the first address information and the scene to be reproduced in the future
Second address information indicating the location of the hypermedia information
Refer to the correspondence table for
Corresponding to the identification information embedded in the corresponding management information.
The hypermedia specified by the first address information.
Information is obtained from outside and displayed on the screen , and further reproduced in the future based on the second address information.
Hypermedia information related to the scene
A moving image reproduction control method characterized by prefetching.
4. Management information for controlling reproduction of a moving image
Moving image titles inserted multiple times in video data playback units
From the storage medium in which the stream data of the
Image that reads out the trim data and displays the moving image on the screen
A moving image reproduction control method in the display device, a predetermined video data to be interlocked display hypermedia information
For each scene consisting of data playback units.
In the management information corresponding to the image data reproduction unit,
-Reserve identification information for acquiring media information from outside
The identification information and the current playback
Different hypermedia for different scenes
Correspondence table with multiple pieces of address information indicating the location of information
Management information corresponding to the currently playing scene
And the current date and time, or
Information obtainable from data being reproduced by the image display device
Based on the information in the plurality of hypermedia information
Select hypermedia information to be obtained from outside
Acquired, and the acquired hypermedia information
Video playback control characterized by displaying on the screen at the same time
Method.
5. Management information for controlling reproduction of a moving image
Moving image titles inserted multiple times in video data playback units
From the storage medium in which the stream data of the
Image that reads out the trim data and displays the moving image on the screen
A moving image reproduction control method in the display device, the each to be interlocked display hypermedia information scene
Management information corresponding to the video data playback units that make up the scene
Information on the hypermedia from outside
Information and data for prompting user operation
And the navigation to be performed when the user performs the operation
Command is embedded in advance, and during the playback of the video title,
Link with hypermedia information on the corresponding moving image
Displaying a link button for prompting, and when the link button is selected by the user,
Execute a navigation command to switch to the currently playing scene.
Hypermedia information specified by the corresponding identification information
Acquired from outside, and the acquired hypermedia information
Video playback control characterized by displaying on the screen at the same time
Method.
6. A moving image title stream from a storage medium.
Video playback control method for reading and playing back
Of the plurality of scenes constituting the video title,
For each scene where the destination content should be displayed,
Identification information for multiple linked content items
Is defined, and a predetermined operation by the user is performed during the reproduction of the stream data.
When the operation is performed, the identification corresponding to the currently playing scene
Based on the information, a link related to the scene being played.
Destination content is obtained from outside or from the storage medium, and the obtained linked destination content is reproduced in the scene being reproduced.
Video playback control method characterized by displaying on the screen at the same time
Law.
7. Management information for controlling reproduction of a moving image
Moving image titles inserted multiple times in video data playback units
From the storage medium in which the stream data of the
Image that reads out the trim data and displays the moving image on the screen
What display device der, that every should be linked display hypermedia information scene
Management information corresponding to the video data playback units that make up the scene
In the report, the hypermedia information is obtained from outside
Identification information is embedded in advance, and during playback of the video title,
Specify by identification information embedded in the corresponding management information
Means for obtaining external hypermedia information from outside
And reproducing the acquired hypermedia information.
Image display device characterized in that the
Place.
8. Management information for controlling reproduction of a moving image
Moving image titles inserted multiple times in video data playback units
From the storage medium in which the stream data of the
Image that reads out the trim data and displays the moving image on the screen
A display device, for each scene in which hypermedia information is to be interlocked and displayed.
Management information corresponding to the video data playback units that make up the scene
The ID corresponding to the scene is embedded in the report in advance.
Are, during playback of the moving image title, in the image display device or
Or the ID managed in the external server to be connected
And address information indicating the location of hypermedia information
Refer to the correspondence table to correspond to the currently playing scene.
Hyper corresponding to the ID embedded in the management information
Means for externally acquiring media information, and transmitting the acquired hypermedia information to the currently reproduced sheet.
Image display device characterized in that the
Place.
9. Management information for controlling reproduction of a moving image is
Moving image titles inserted multiple times in video data playback units
From the storage medium in which the stream data of the
Image that reads out the trim data and displays the moving image on the screen
A display device, for each scene in which hypermedia information is to be interlocked and displayed.
Management information corresponding to the video data playback units that make up the scene
In the report, the hypermedia information is obtained from outside
Information is embedded in advance, and during reproduction of the moving image title, the identification information and the currently reproduced
Indicates the location of hypermedia information corresponding to the scene
Relating to the first address information and the scene to be reproduced in the future
Second address information indicating the location of the hypermedia information
Refer to the correspondence table for
Corresponding to the identification information embedded in the corresponding management information.
The hypermedia specified by the first address information.
Acquire information from outside and display it on the screen.
Based on the second address information, a scene to be reproduced in the future
External read-ahead of hypermedia information related to
An image display device comprising:
10. Management information for controlling reproduction of a moving image is predetermined.
Video tie that is inserted in multiple units of video data playback
From the storage medium where the stream data of the
An image for reading stream data and displaying moving images on the screen
An image display device, wherein predetermined moving image data to be displayed in conjunction with hypermedia information is displayed.
For each scene consisting of data playback units.
The management information corresponding to the image data reproduction unit includes
Identification information for acquiring hypermedia information from outside
Is embedded in advance , and the identification information and the currently playing
Different hypermedia for different scenes
Correspondence table with multiple pieces of address information indicating the location of information
Management information corresponding to the currently playing scene
And the current date and time, or
Information obtainable from data being reproduced by the image display device
Based on the information in the plurality of hypermedia information
Select hypermedia information to be obtained from outside
Acquiring means for acquiring the acquired hypermedia information.
Image display device characterized in that the
Place.
11. Management information for controlling reproduction of a moving image is predetermined.
Video tie that is inserted in multiple units of video data playback
From the storage medium where the stream data of the
An image for reading stream data and displaying moving images on the screen
An image display device, wherein hypermedia information is displayed for each scene to be displayed in conjunction.
Management information corresponding to the video data playback units that make up the scene
In the report, the hypermedia information is obtained from outside
Identification information and data for prompting user operation.
And the navigation to be performed when the user performs the operation.
Command is embedded in advance, and during playback of the video title,
Link with hypermedia information on the corresponding moving image
Means for displaying a link button for prompting, and when the link button is selected by the user,
Execute a navigation command to switch to the currently playing scene.
Hypermedia information specified by the corresponding identification information
Means for acquiring the hypermedia information from outside, and
Image display device characterized in that the
Place.
12. A moving image title stream from a storage medium.
Image display device that reads out and plays back
Of the plurality of scenes constituting the video title,
For each scene where the destination content should be displayed,
Identification information for multiple linked content items
Is defined, and a predetermined operation by the user is performed during the reproduction of the stream data.
When the operation is performed, the identification corresponding to the currently playing scene
Based on the information, a link related to the scene being played.
A method for acquiring the destination content from outside or the storage medium
A stage in which the acquired linked content is reproduced.
An image display device for simultaneously displaying a screen.
13. The stream data of a moving image title is
The stored computer-readable recording medium
In the stream data, management for controlling video playback is included.
If multiple pieces of information have been inserted in
Ri, that every should be linked display hypermedia information scene
The tube corresponding to a video data playback unit constituting a scene
The management information includes a compilation performed using the management information.
When a computer plays a scene, the scene
To obtain the corresponding hyper media information from the outside and its
Screen at the same time as the scene being played
Identification information instructing the computer to display
A recording medium which is embedded in advance.
14. The stream data of a moving image title is
The stored computer-readable recording medium
In the stream data, management for controlling video playback is included.
If multiple pieces of information have been inserted in
Ri, that every should be linked display hypermedia information scene
The tube corresponding to a video data playback unit constituting a scene
In the processing information, there is a hypermeasure corresponding to the scene being reproduced.
Identification information for acquiring media information from outside,
Data for prompting user operation during the playback of the scene,
The identification information is executed when the user performs the operation.
Obtain the hypermedia information specified in
Contains navigation commands to display on screen
A recording medium characterized by the above-mentioned.
JP32859597A 1997-11-28 1997-11-28 Moving image playback control method and image display device to which the method is applied Expired - Fee Related JP3195284B2 (en)

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US09/200,801 US6580870B1 (en) 1997-11-28 1998-11-27 Systems and methods for reproducing audiovisual information with external information
US10/379,723 US7440675B2 (en) 1997-11-28 2003-03-06 AV information reproducing system and a reproducing method applied to the same system
US12/003,925 US8396345B2 (en) 1997-11-28 2008-01-03 AV information reproducing system and a reproducing method applied to the same system
US13/655,177 US20130077934A1 (en) 1997-11-28 2012-10-18 Av information reproducing system and a reproducing method applied to the same system

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