JP3875685B2 - Information reproducing apparatus and information reproducing method - Google Patents

Description

  The present invention relates to an information playback apparatus and information playback method for playing back content stored in an information storage medium.

  In recent years, a standard for a reproduction-only DVD (Digital Versatile Disk) has been defined, and a reproduction apparatus for reproducing video / audio information stored in the reproduction-only DVD has started to appear.

  According to the reproduction-only DVD standard, the reproduction-only DVD stores presentation data in which actual video / audio data is recorded and navigation data for managing the presentation data. The presentation data includes video data, audio data, and sub-picture data, and these data are multiplexed according to the specification of a program stream (2048 bytes) defined by MPEG2. In the navigation data, PGC (ProGram Chain) and Cell for setting the time structure and order of video / audio data to be reproduced are described, and this navigation data is used for multi-angle, multi-story, parental, etc. The function is feasible.

As a conventional technique related to this, an image display device that performs a service in which a DVD video title and an HTML file are merged is disclosed (Patent Document 1). In this image display device, it is possible to take out a URL from the navigation pack of the video object unit, and based on this, connect to the Internet and display it in conjunction with the scene being reproduced.
JP-A-11-161663

  According to the above read-only DVD standard, only the MPEG2 program stream recorded on the disc can be reproduced, and information other than the MPEG2 program stream recorded on the disc cannot be reproduced. It was. That is, there is a problem that the expandability of DVD playback is poor.

  Further, in the above-mentioned Patent Document 1, there is a problem in the content display method. In general, there are several types of monitors as display means, such as personal computer monitors, 4: 3 TV monitors, and 16: 9 TV monitors. Since each pixel has a different arrangement, the same content is displayed differently. For example, content created for a 4: 3 TV monitor is displayed horizontally when displayed on a 16: 9 TV monitor, and displayed vertically when displayed on a personal computer monitor. Further, since the content is composed of a combination of elements such as a DVD, a moving image, a still image, and a font, it is difficult to create a content for each monitor.

  An object of the present invention has been made in view of the above-described circumstances, and is an information reproduction that is excellent in expandability of reproduction of an information storage medium and can appropriately display contents corresponding to various monitors. An apparatus and an information reproducing method are provided.

  In order to solve the above problems and achieve the object, the information reproducing apparatus and information reproducing method of the present invention are configured as follows.

  (1) An information reproducing apparatus according to the present invention includes a first acquisition unit (DVD video reproduction engine) for acquiring content (DVD video content C1) from an information storage medium (enhanced DVD video disk D2), the information storage medium, Second acquisition means (ENAV engine 200, Internet connection unit 211) for acquiring extended information (ENAV contents C21, C22) from at least one of the outsides via the communication line, and the output destination of the contents and the extended information Included in the content and the extended information as necessary based on actual monitor information (information indicating whether the actual monitor to be output is a PC monitor, 4: 3 TV monitor, or 16: 9 TV monitor) Image processing means for processing image data (pixel conversion, resizing, etc. And reproduction means (101, 203, 208) for reproducing the content and reproducing the image data included in the extended information and subjected to image processing as necessary in synchronization with the reproduction of the content. ing.

  (2) In the information reproducing method of the present invention, the extended information (ENAV contents C21, C22) is acquired from at least one of the information storage medium (enhanced DVD video disk D2) and the outside via the communication line, and the information storage medium The acquired content (DVD video content C1) and the actual monitor information that is the output destination of the extended information (the actual monitor that is the output destination indicates a PC monitor, 4: 3 TV monitor, or 16: 9 TV monitor) Information) and processing the image data included in the content and the extended information as necessary (pixel conversion, resizing, etc.), playing back the content, and synchronizing the playback of the content with the extended Image data included in the information and subjected to image processing as necessary is reproduced.

  According to the present invention, it is possible to provide an information reproducing apparatus and an information reproducing method that are excellent in expandability of reproduction of an information storage medium and can appropriately display content corresponding to various monitors.

  Hereinafter, the present embodiment will be described with reference to the drawings.

  First, the data structure of the disc considering compatibility with the DVD video standard will be described.

  1 and 2 show an example of the data structure of a DVD video disc that can be played back by the DVD video player shown in FIG. 3 to be described later.

  FIG. 1 is a diagram showing an example of the data structure of the standard DVD video disc D1. The DVD video area 3 of the standard DVD video disc D1 stores DVD video content C1 (having an MPEG2 program stream structure).

  On the other hand, FIG. 2 is a diagram showing an example of the data structure of the enhanced DVD video disc D2. The DVD video area of the enhanced DVD video disc D2 stores DVD video content C1 (having an MPEG2 program stream structure) having the same data structure as the DVD video standard. Further, the other recording area 4 of the enhanced DVD video disc D2 stores enhanced navigation (hereinafter abbreviated as ENAV) content C21 that can reproduce a variety of video contents. Note that the recording area 4 is also recognized by the DVD video standard.

  Here, a basic data structure of the DVD video disk will be described. That is, the recording area of the DVD video disc includes a lead-in area 1, a volume space, and a lead-out area 5 in order from the inner periphery. The volume space includes a volume / file structure information area 2 and a DVD video area (DVD video zone) 3, and may optionally include another recording area (DVD other zone) 4.

  The volume / file structure information area 2 is an area allocated for the UDF (Universal Disk Format) bridge structure. A volume in the UDF bridge format is recognized in accordance with Part 2 of ISO / IEC13346. The space for recognizing this volume is composed of continuous sectors and starts from the first logical sector of the volume space shown in FIGS. The first 16 logical sectors are reserved for system use as defined by ISO9660. In order to ensure compatibility with the conventional DVD video standard, the volume / file structure information area 2 having such contents is required.

  In the DVD video area 3, management information called a video manager VMG30 and one or more video contents called video title sets VTS (VTS # 1 to VTS # n) are recorded. The VMG 30 is management information for all VTSs existing in the DVD video area 3, and includes control data VMGI, VMG menu data VMGM_VOBS (option), and VMG backup data. Each VTS includes control data VTSI of the VTS, VTS menu data VTSM_VOBS (option), data VTSTT_VOBS of contents (movies, etc.) of the VTS (title), and backup data of VTSI. In order to ensure compatibility with the conventional DVD video standard, a DVD video area having such contents is also required.

  Playback selection menus and the like for each title (VTS # 1 to VTS # n) are given in advance by a provider (DVD video disk producer) using VMG, and playback chapter selection within a specific title (for example, VTS # 1) Menus, recorded content (cell) playback procedures, and the like are given in advance by the provider using VTSI. Accordingly, the disc viewer (DVD video player user) can enjoy the recorded contents of the disc 1 in accordance with the VMG / VTSI menu prepared in advance by the provider and the playback control information (program chain information PGCI) in the VTSI. it can. However, in the DVD video standard, the viewer (user) cannot reproduce the contents (movies and music) of the VTS by a method different from the VMG / VTSI prepared by the provider.

  Prepared for the mechanism to play VTS contents (movies and music) in a different way from the VMG / VTSI provided by the provider, or to add and play contents different from the VMG / VTSI provided by the provider Is the enhanced DVD video disc D2 of FIG. The ENAV content C21 included in the disc D2 cannot be accessed by a DVD video player manufactured based on the DVD video standard (even if it can be accessed, the content cannot be used), but a DVD video player (one example of the present invention) 3 player, etc.), and the playback content can be used.

  ENAV contents C21 and C22 are data such as audio, still image, font / text, moving image, animation, and ENAV document which is information for controlling the reproduction thereof (this is described in Markup / Script language). It is comprised so that it may contain. Information for controlling this playback includes ENAV content (consisting of audio, still image, font / text, video, animation, etc.) and / or DVD video content C1 playback method (display method, playback procedure, playback). Switching procedure, selection of playback target, etc.) are described using Markup language or Script language. For example, HTML (Hyper Text Markup Language) / XHTML (eXtensible Hyper Text Markup Language) and SMIL (Synchronized Multimedia Integration Language) as the markup language, Script languages such as ECMA (European Computer Manufacturers Association) Script and JavaScript as the script language Etc. can be used in combination.

  Here, since the enhanced DVD video disc D2 of FIG. 2 complies with the DVD video standard except for the other recording areas, the video content recorded in the DVD video area can be used even if a widely used DVD video player is used. (That is, compatible with the conventional DVD video disk D1).

  ENAV content C21 recorded in another recording area cannot be reproduced (or cannot be used) by a conventional DVD video player, but can be reproduced and used by a DVD video player (FIG. 3) according to an example of the present invention. Therefore, if the ENAV content C21 (and ENAV content C22) is reproduced using the DVD video player according to an example of the present invention, the content is not limited to the contents of the VMG / VTSI prepared in advance by the provider, and the variety is richer. Video playback is possible.

  FIG. 3 is a diagram showing an example of a DVD video player for reproducing the enhanced DVD video disk (FIG. 2) of the present invention. This DVD video player reproduces and processes the recorded content (DVD video content C1 and / or ENAV content C21) from the enhanced DVD video disc D2 compatible with the DVD video standard shown in FIG. The ENAV content C22 is fetched and processed from a communication line such as the Internet. The ENAV content C21 and the ENAV content C22 are one type of extended information.

  The DVD video player in FIG. 3 includes a DVD video playback engine 100, an ENAV engine 200, a disc unit 300, and a user interface unit 400. The DVD video playback engine 100 plays back and processes the MPEG2 program stream (DVD video content C1) recorded on the enhanced DVD video disc D2. The ENAV engine 200 plays back and processes the ENAV contents C21 and C22. The disc unit 300 reads the DVD video content C1 and / or ENAV content C21 recorded on the enhanced DVD video disc D2. The user interface unit 400 transmits an input (user operation / user operation) by a user of the player as a user trigger.

  The ENAV engine 200 includes an Internet connection unit 211. The Internet connection unit 211 functions as a communication unit for connecting to a communication line such as the Internet. Furthermore, the ENAV engine 200 includes an ENAV buffer unit (preload / download buffer) 209, an XHTML + SMIL / CSS parser 210, an XHTML / CSS layout manager 207, an ECMAScript interpreter & DOM manipulator 205, an SMIL timing engine 206, an ENAV interface handler. 202, element decoders 2081, 2082, AV renderer 203, buffer manager 204, download manager 213, network manager 212, and ENAV system clock 214.

  3, the DVD video playback control unit 102, the DVD video decoder 101, the DVD system clock 103, the ENAV interface handler 202, the XHTML + SMIL / CSS parser 210, the ECMAScript interpreter & DOM manipulator 205, and the SMIL timing engine. 206, XHTML / CSS layout manager 207, AV renderer 203, element decoders 2081, 2082, buffer manager 204, download manager 213, network manager 212, ENAV system clock 214, etc. are embedded programs (not shown) A microcomputer (and / or hardware) that performs the function of each block configuration by firmware Can be achieved by the air logic). A work area used when executing the firmware can be obtained by using a semiconductor memory (not shown) in each block configuration (and a hard disk if necessary).

  The DVD video playback engine 100 is a device for playing back the DVD video content C1 based on the existing DVD video standard, and the DVD video decoder 101 and the DVD video content for decoding the DVD video content C1 read from the disc unit 300. A DVD video playback control unit 102 that controls playback of C1 and a DVD system clock 103 that determines the timing of decoding and output in the DVD video coder.

  The DVD video decoder 101 decodes video data, audio data, and sub-video data based on the existing DVD video standard, and decodes the video data (a combination of the video data and the sub-video data) and It has a function to output each audio data. As a result, the DVD video playback engine 100 has the same function as the playback engine of a normal DVD video player manufactured based on the existing DVD video standard. In other words, the player in FIG. 3 can reproduce data such as video and audio in the MPEG2 program stream structure in the same manner as a normal DVD video player, and this allows the existing DVD video disc (in accordance with the conventional DVD video standard). Disc) D1 can be reproduced.

  In addition to this, the DVD video playback control unit 102 is configured to be able to control the playback of the DVD video content C 1 in accordance with a “DVD control” signal output from the ENAV engine 200. Specifically, the DVD video playback control unit 102 sends the DVD video to the ENAV engine 200 when a certain event (for example, a menu call or a title jump) occurs in the DVD video playback engine 100 during DVD video playback. A “DVD trigger” signal indicating the reproduction status of the content C1 can be output. At that time (at the same time as the output of the DVD trigger signal or at an appropriate timing before and after the DVD trigger signal), the DVD video playback control unit 102 sets the property information of the DVD video player (for example, the audio language and sub-picture subtitle language set in the player). , A “DVD status” signal indicating a playback operation, a playback position, various time information, a disc content, etc.) can be output to the ENAV engine 200.

  The ENAV interface handler 202 receives a “user trigger” corresponding to a user operation (menu call, title jump, playback start, playback stop, playback pause, etc.) from the user interface unit 400. Then, the ENAV interface handler 202 transmits the received user trigger to the ECMAScript interpreter & DOM manipulator 205 as a corresponding ENAV event. For example, the ENAV document indicates the following instructions for this ENAV event.

  1. Issue ENAV command corresponding to user operation. That is, the same command as the user operation is transmitted to the DVD video playback engine 100 as a DVD control.

  2. Issue ENAV command different from user operation. That is, the user operation is replaced with another operation according to the instruction of the ENAV document.

  3. Ignore user triggers. In other words, user events are prohibited for reasons such as the possibility of playing DVD videos unintended by the content provider.

  The contents of the user trigger signal transmitted to the ENAV interface handler 202 may be transmitted to the AV renderer 203 as an “AV output control” signal. Thus, for example, when the user changes the content or window size or shifts the display position with the cursor key of the remote controller (not shown), the user trigger signal by this operation is used as the corresponding AV output control signal, Output to the AV renderer 203. In addition to this, by sending a video / audio output from the DVD-Video playback engine 100 and a video / audio output from the ENAV engine 200 to the AV renderer 203, the video / audio output by the user operation is sent. Can be switched.

  The ENAV interface handler 202 transmits / receives a “DVD status” signal, a “DVD trigger” signal and / or a “DVD control” signal to / from the DVD video playback control unit 102, or to / from the user interface unit 400. To send and receive “user trigger” signals. The ENAV interface handler 202 further transmits / receives “ENAV event”, “ENAV property”, “ENAV command”, “ENAV control” signals to / from the ECMAScript interpreter & DOM manipulator 205 and SMIL timing engine 206. It is configured. That is, the ENAV interface handler 202 executes the following.

  1. ECMAScript with a “DVD trigger” signal indicating the operation of the DVD video playback engine 100 from the DVD video playback engine 100 or a “user trigger” indicating a user operation from the user interface unit 400 as an “ENAV event”. Communicate to interpreter & DOM manipulator 205 and SMIL timing engine 206.

  2. The “DVD status” signal indicating the playback status of the DVD video playback engine 100 from the DVD video playback engine 100 is transmitted to the ECMAScript interpreter & DOM manipulator 205 and the SMIL timing engine 206 as “ENAV property”. At this time, information on the DVD status is stored in the property buffer 202a of the ENAV interface handler 202 as needed.

  3. The “ENAV control” signal from the SMIL timing engine 206 is transmitted to the DVD video playback engine 100 as a “DVD control” signal.

  4. In response to the content of the “ENAV command” signal from the ECMAScript interpreter & DOM manipulator 205, a “DVD control” signal for controlling the playback of the DVD video playback engine 100 is sent to the AV renderer 203. An “AV output control” signal for switching video and audio is read into the buffer manager 204 and a “buffer control” signal for erasing the buffer is sent to the download manager 213 to the server unit. An “town load control” signal for downloading a certain ENAV content is output as an “element control” signal that instructs the element decoders 2081 and 2082 to decode the ENAV element.

  5. Information of the DVD system clock 103 in the DVD video playback engine 100 is measured by the DVD timing generator 202b of the ENAV interface handler 202 and transmitted to the element decoder 2082 as a “DVD timing” signal. That is, the element decoder 2082 can decode the ENAV element in synchronization with the system clock of the DVD video playback engine 100.

  As described above, the ENAV interface handler 202 has a function of converting control signals and the like between the DVD video playback engine 100 and the ENAV engine 200 after analyzing and interpreting ENAV contents.

  The ENAV interface handler 202 is parsed by the XHTML + SMIL / CSS parser 210, and the first signal is based on the contents interpreted by the ECMAScript interpreter & DOM manipulator 205, the SMIL timing engine 206, or a user trigger from the input device. Are exchanged, and the second signal is exchanged. In other words, the ENAV interface handler 202 is exchanged with the first signal exchanged with the DVD video playback control unit 102, and with the ECMAScript interpreter & DOM manipulator 205 and SMIL timing engine 206. It can be said that the output state of the video / audio signal by the AV renderer 203 is controlled based on at least one of the second signals. The first signal is a signal related to the reproduction status of the enhanced DVD video disc D2, and corresponds to a “DVD control” signal, a “DVD trigger” signal, a “DVD status” signal, and the like. The second signal is a signal related to the content of the ENAV content, and corresponds to an “ENAV event” signal, an “ENAV command” signal, an “ENAV property” signal, an “ENAV control” signal, and the like.

  Here, the ENAV interface handler 202 is configured to execute processing corresponding to the user trigger according to the ENAV document. Then, the AV renderer 203 combines the video / audio data generated by the element decoder 208 with the video / audio data played back by the DVD video playback engine 100 based on the execution result of the processing corresponding to the user trigger. Output. Alternatively, the AV renderer 203 selects one of the video / audio data generated by the element decoder 208 and the video / audio data reproduced by the DVD video reproduction engine 100 based on the execution result of the ENAV command in the ENAV interface handler 202. One of the output video / audio data and the video / audio data is selected and output.

  Generally speaking, the XHTML + SMIL / CSS parser 210 performs syntax analysis of the ENAV document indicating the playback control information included in the ENAV content C21 obtained from the enhanced DVD video disc D2 or the ENAV content C22 obtained from the Internet or the like. The ENAV document is composed of a combination of the Markup language such as HTML / XHTML and SMIL described above and the Script language such as ECMAScript and JavaScript. XHTML + SMIL / CSS parser 210 functions to transmit ECMAScript module to ECMAScript interpreter & DOM manipulator 205, SMIL module to SMIL timing engine 206, and XHTML module to XHTML / CSS layout manager 207 according to the result of language analysis It has.

  The ECMAScript interpreter & DOM manipulator 205 interprets the aforementioned ECMAScript module and follows its instructions. That is, the ECMAScript interpreter & DOM manipulator 205 responds to the “ENAV event” signal sent from the ENAV interface handler 202 and the “ENAV property” signal read from the property buffer of the ENAV interface handler 202 with each ENAV engine 200. It has a function of issuing an “ENAV command” signal for controlling the function to the ENAV interface handler 202. At this time, the ECMAScript interpreter & DOM manipulator 205 issues an “ENAV command” signal to the DVD video playback engine 100 at a timing indicated by the ENAV document by following the time measured by the ENAV system clock 214, By issuing a “control” signal to the element decoder 208, it is possible to control the DVD video playback engine 100 and to decode ENAV elements (audio, still image, text / font, moving image / animation).

  The SMIL timing engine 206 interprets the aforementioned SMIL module and follows the interpreted instructions. That is, the SMIL timing engine 206 responds to the “ENAV event” signal sent from the ENAV interface handler 202 and the “ENAV property” signal read from the property buffer of the ENAV interface handler 202 according to the ENAV system clock 214. It has a function of issuing an “ENAV control” signal to the ENAV interface handler 202 or the element decoder 208. As a result, it is possible to control the DVD video playback engine 100 and to decode ENAV elements (audio, still image, text / font, moving image / animation) at a desired timing.

  The XHTML / CSS layout manager 207 interprets the aforementioned XHTML module and follows its instructions. That is, the XHTML / CSS layout manager 207 outputs a “layout control” signal to the AV renderer. The “layout control” signal contains information about the screen size and position of the output video (may include information about the display time such as display start / end / continuation), information about the level of audio to be output (output start / Information on output time such as end / continuation may be included). The text information for display contained in the XHTML module is sent to the element decoder 208, and is decoded and displayed using a desired font.

  A specific method for parsing and interpreting the Markup language and the Script language may be the same as the parsing and interpretation methods in known technologies such as HTML / XHTML, SMIL, ECMAScript, and JavaScript (the hardware used). Is the microcomputer described at the beginning of the description of FIG. However, the commands and variables described in the script are different because the objects to be controlled are different. In the ENAV document used when implementing the present invention, specific commands and variables related to reproduction of the enhanced DVD video disc D2 and / or ENAV contents C21 and C22 are used. For example, a command for switching the playback content of the enhanced DVD video disc D2 or ENAV contents C21 and C22 in response to a certain event is specific to the Markup language or the Script language in the ENAV document.

  Other examples of commands and variables specific to the Markup language and Script language in ENAV documents include changing the size of video from the DVD video playback engine 100 and / or ENAV engine 200, and changing the video layout. is there. The change of the size of the video is instructed by a command for instructing the size change and a variable for specifying the changed size. The video layout change is instructed by a command to change the display position and a variable that specifies the coordinates after the change. When the display target overlaps on the screen, the variable that specifies the vertical position relationship of the overlap Join. Alternatively, the audio level from the DVD video playback engine 100 and / or ENAV engine 200 may be changed, or the audio language used may be selected. The change of the sound level is instructed by a command for changing the sound level and a variable for designating the sound level after the change. The selection of the used speech language is instructed by a command for instructing the change of the used speech language and a variable for designating the type of language after the change. Some control user triggers from the user interface unit 400.

  Based on the Markup and Script language commands / variables in the ENAV document as illustrated above, the “layout control” signal is sent to the XHTML / CSS layout manager 207 (some functions are performed by the SMIL timing engine 206). In some cases, it is sent to the AV renderer 203. The “layout control” signal indicates the layout on the screen of the video to be displayed on an external monitor device (not shown), the video size, the video output timing, the video output time, and / or the audio to be reproduced from an external speaker (not shown). Is a signal for controlling the volume level, audio output timing, and audio output time.

  The element decoder 208 decodes ENAV content data such as audio, still images (including background images), text / fonts, and moving images / animations included in the ENAV contents C21 and C22. That is, the element decoder 208 includes an audio decoder, a still picture decoder, a text / font decoder, and an animation / moving picture decoder corresponding to the decoding target. For example, audio data in ENAV content encoded by MPEG, AC-3, or DTS is decoded by an audio decoder and converted into uncompressed audio data. Still image data and background image data encoded by JPEG, GIF, and PNG are decoded by a still image decoder and converted into uncompressed image data. Similarly, moving image / animation data encoded by, for example, MPEG2, MPEG4, Macromedia Flash, or SVG (Scalable Vector Graphics) is decoded by a moving image / animation decoder and converted into uncompressed moving image data. The text data included in the ENAV content is decoded by a text / font decoder using the font data included in the ENAV content, and converted into text image data that can be superimposed on a moving image or a still image. Video / audio data including the decoded audio data, image data, animation / moving image data, and text image data as appropriate is sent from the element decoder 208 to the AV renderer 203. These ENAV contents are decoded by an instruction of an “element control” signal from the ENAV interface 202, and ENAV contents (for example, audio commentary data and audio after-record data) synchronized with the DVD video contents are: ENAV content that is not synchronized with the DVD video content in synchronization with the “DVD timing” signal from the ENAV interface 202 is decoded in synchronization with the “ENAV timing” signal from the ENAV system clock 214.

  The AV renderer 203 has a function of controlling video / audio output. Specifically, the AV renderer 203 determines, for example, the video display position, the display size, and the display timing and display time in accordance with the “layout control” signal output from the XHTML / CSS layout manager 207. Depending on the type of monitor specified and / or the type of video to be displayed, controlling the volume of the audio (may include the output timing and output time). The pixel conversion is performed. The video / audio output to be controlled is the output from the DVD video playback engine 100 and the element decoder 208. Furthermore, the AV renderer 203 has a function of controlling mixing (mixing) and switching (switching) of the DVD video content C1 and ENAV content C21 and C22 in accordance with an “AV output control” signal output from the ENAV interface handler 202. .

  The ENAV engine 200 in the DVD video player in FIG. 3 is an interface for sending the ENAV document in the ENAV content C21 read from the enhanced DVD video disc D2 to the XHTML + SMIL / CSS parser 210 via the ENAV buffer unit 209. And an interface for sending the read data (audio data, still image data, text / font data, moving image data, etc.) in the ENAV content C21 to the element decoder 208 via the ENAV buffer unit 209. These interfaces constitute an interface (first interface) different from the Internet connection unit 211 of FIG.

  3 receives an ENAV content C22 from a communication line such as the Internet, and sends an ENAV document in the received ENAV content C22 to the XHTML + SMIL / CSS parser 210 via the ENAV buffer unit 209. And an interface for sending the received data (audio data, still image data, font / text data, moving image data, etc.) in the ENAV content C22 to the element decoder 208 via the ENAV buffer unit 209. These interfaces constitute the Internet connection unit (second interface) in FIG.

  The ENAV buffer unit 209 is configured with a buffer for storing the ENAV content C22 downloaded from the server unit 500 and the ENAV content C21 read from the enhanced DVD video disc D2 by the disc unit 300.

  The ENAV buffer unit 209 reads the ENAV content C22 in the server unit 500 under the control of the buffer manager 204 based on the ENAV document (Markup language / Script language), and downloads the ENAV content C22 via the Internet connection unit 211. To do.

  The ENAV buffer unit 209 reads the ENAV content C21 recorded on the enhanced DVD video disc D2 under the control of the buffer manager 204 based on the ENAV document (Markup language / Script language). At this time, if the disc unit 300 is a device capable of accessing the disc at high speed, the enhanced DVD video disc D2 is simultaneously reproduced while reproducing the DVD video content C1, that is, reading the DVD video data from the enhanced DVD video disc D2. ENAV content C21 can be read out from. When the disc unit 300 is not a device that can be accessed at high speed, or when the reproduction operation of the DVD video content C1 is completely guaranteed, it is necessary not to interrupt the reproduction of the DVD video content C1. In this case, the ENAV content C21 is read from the enhanced DVD video disk D2 in advance and is stored in a preload unit (not shown) of the ENAV buffer 209 before reproduction starts. As a result, the DVD video content C1 is read from the enhanced DVD video disc D2, and at the same time, the ENAV content C21 is read from the preload portion, so that the disc portion 300 is not burdened. Therefore, it is possible to simultaneously reproduce the DVD video content C1 and the ENAV content without interrupting the reproduction of the DVD video content C1.

  As described above, the ENAV content C22 downloaded from the server unit 500 is also stored in the ENAV buffer unit 209 in the same manner as the ENAV content C21 recorded on the enhanced DVD video disc D2, so that the DVD video content C1 and the ENAV content are stored. It becomes possible to read and reproduce simultaneously with C22.

  Further, the storage capacity of the ENAV buffer unit 209 has a limit. That is, the data size of the ENAV contents C21 and C22 that can be stored in the ENAV buffer unit 209 is limited. Therefore, under the control of the buffer manager 204 (buffer control), it is possible to delete the ENAV contents C21 and C22 with low necessity and to store the ENAV contents C21 and C22 with high necessity. The ENAV buffer unit 209 can automatically perform the above-described control for storage and the above-described control for erasure.

  The buffer manager 204 can send the following instruction as “buffer control” to the ENAV buffer unit 209 according to the instruction of the ENAV document.

・ Reading (downloading) a specific file or part of a file from a server
・ Reading a specific file or part of a file from a disk (preload)
-Deletion of specific file or part of file from buffer Download manager 213 obtains download data from enhanced DVD disk D2 of server unit 300 or server unit 500 according to the instruction of ENAV document, and downloads the downloaded data. It has a function of interpreting and downloading necessary ENAV contents from the server unit 500 (download control) and holding them in the ENAV buffer 209.

  For example, if the download data consists of the name and location of the file to be downloaded, the file size, and the content type, the download data on the disk or the download data on the server at the timing indicated by the ENAV document Is read. The download manager 213 instructs download in the order described in the file (or all at the same time) (download control).

  For example, when the download data is composed of a file name and location to be downloaded, a file size, a content type, a playback start time, and a playback end time, the ENAV document is read and the ENAV document indicates on the disc Read download data or download data on the server. The download manager 213 refers to the file size of the download data and the playback start time, reads ENAV contents with a high playback priority until the capacity of the ENAV buffer is full, and starts playback. Next, referring to the playback end time, the ENAV content that has been played back is erased from the ENAV buffer, and a new ENAV content is read.

  The network manager 212 controls the operation of the Internet connection unit 211. That is, when connection to or disconnection from the network is instructed as an ENAV command by the ENAV document, the network manager 212 switches connection / disconnection of the Internet connection unit 211.

  The components of the ENAV engine shown in FIG. 3 can be summarized as follows when the expression is changed. That is, the ENAV engine is composed of the following.

・ XHTML + SMIL / CSS parser 210
The XHTML + SMIL / CSS parser 210 parses the content of the ENAV document.

ECMAScript interpreter & DOM manipulator 205, SMIL timing engine 206, XHTML / CSS layout manager 207
The ECMAScript interpreter & DOM manipulator 205, the SMIL timing engine 206, and the XHTML / CSS layout manager 207 interpret the analyzed module.

ENAV interface handler 202
The ENAV interface handler 202 handles control signals from the ECMAScript interpreter & DOM manipulator 205 and the SMIL timing engine 206 and control signals from the DVD video playback control unit 102.

Element decoder 208
The element decoder 208 synchronizes with the system clock of the DVD playback engine or ENAV engine, and the video corresponding to data such as audio, still image, text font, and moving image included in the ENAV contents C21 and C22.・ Generate audio data.

・ AV renderer 203
The AV renderer 203 combines the video / audio data generated by the element decoder 208 with the video / audio data reproduced by the DVD video reproduction engine 100 based on the execution result of the ENAV command in the ENAV interface handler 202. Output. Alternatively, the AV renderer 203 selects one of the video / audio data generated by the element decoder 208 and the video / audio data reproduced by the DVD video reproduction engine 100 based on the execution result of the ENAV command in the ENAV interface handler 202. Output.

ENAV buffer unit 209
The ENAV buffer unit 209 temporarily stores the ENAV content C22 acquired from the server unit 500 via the disk unit 300 or the Internet connection unit 211.

Buffer manager 204
The buffer manager 204 reads ENAV content data into the ENAV buffer unit 209 or deletes it from the ENAV buffer unit 209 in accordance with an instruction from the ENAV interface handler 202 (ENAV document instruction).

・ Download Manager 213
The ENAV contents are downloaded from the server unit to the ENAV buffer based on the download data.

Network manager 212
Control of connection or disconnection to the network is performed according to the instruction of the ENAV document.

  FIG. 4 is a schematic diagram illustrating a pixel conversion function and functions related thereto.

  The DVD video content is decoded by the decoder unit 101 of the DVD video playback engine 100, and in response to an instruction (conversion control) of the XHTML / CSS layout manager 207 based on the ENAV document, the LB / PS conversion unit 101a Either “letterbox conversion (LB conversion)”, “pan scan conversion (PS conversion)”, or “no conversion” conversion is performed (LB / PS conversion). Further, the converted output is converted into a specified size by the DVD video resizing unit 203f in accordance with an instruction (conversion control) of the XHTML / CSS layout manager 207. Next, the layout engine 203j determines the arrangement on the monitor according to the instruction (layout control) of the XHTML / CSS layout manager 207 based on the ENAV document. Hybridized with ENAV elements (still images, animations / moving images, fonts, backgrounds).

  At this time, switching between “LB conversion”, “PS conversion”, and “no conversion” by the XHTML / CSS layout manager 207 can be performed by user operation as long as the description of the ENAV document permits. That is, in response to a user trigger from the user interface unit 400, the conversion switching described above is transmitted to the DVD video playback control unit 102 of the DVD video playback engine 100 as a DVD control.

  Next, the still image data and the animation / moving image data are decoded by the still image decoder 2081a and the animation / moving image decoder 2081b of the element decoder 2081, and the still image conversion unit 203a in the AV renderer 203 or the animation / moving image / pixel conversion. In the section 203b, an instruction (conversion control) of the XHTML / CSS layout manager 207, “information of a monitor with designated output (monitor information)” that can be acquired from the ENAV interface handler, a still image decoder 2081a, and an animation / moving image Pixel conversion is performed based on information (image information) from the decoder 2081b (still image / pixel conversion and animation / moving image / pixel conversion).

  Here, the monitor information indicates that the monitor whose output is designated is “4: 3 TV monitor”, “16: 9 TV monitor”, or “PC monitor”. In other words, the monitor information is information (actual monitor information) indicating that an actual monitor as an output destination is a PC monitor, 4: 3 TV monitor, or 16: 9 TV monitor. Also, the above-mentioned image information refers to the monitor on which the decoded still image and animation / moving image data are supposed to be displayed, that is, “4: 3 TV monitor”, “16: 9 TV monitor”, “PC Indicates “for monitor” or “not specified”. In other words, the image information is information (optimum monitor information) indicating which monitor is optimal to output to a PC monitor, 4: 3 TV monitor, or 16: 9 TV monitor.

  For example, in the above-mentioned still image data and moving image / animation data, an area for recording information indicating which monitor is supposed to be displayed is provided, and each decoder decodes the data itself and this monitor. Information is read and transmitted to the pixel conversion units 203a, 203b, 203c, and 203d. Furthermore, if the contents of image information (optimal monitor information) and monitor information (actual monitor information) are different for a certain still image data or animation / moving image data, the ENAV document includes “PS conversion”, “LB conversion” or “no conversion” is described, and this information is transmitted as conversion control to the pixel conversion units 203a, 203b, 203c, and 203d.

  Furthermore, the image information (optimum monitor information) is not limited to the inside of still image data or animation / moving image data, and can be recorded as a file name of the still image data or animation / moving image data, for example.

  For example, in some still image data or animation / moving image data, the monitor information (actual monitor information) indicates “4: 3 TV monitor” and the image information (optimal monitor information) also indicates “4: 3 TV monitor” Since the relationship between the image data and the monitor is the same, no conversion is performed unconditionally. When the monitor information (actual monitor information) indicates “16: 9 TV monitor” and the image information (optimal monitor information) indicates “4: 3 TV monitor”, the relationship between the image data and the monitor is different. , One of the conversions (PS conversion, LB conversion, no conversion) is performed in accordance with the description of the ENAV document.

  As another example, there is a case where an ENAV document describes on which monitor it is assumed that still image data or animation moving image data is displayed. That is, even if image information is not recorded in still image data and animation / moving image data, and even if the pixel conversion units 203a, 203b, 203c, and 203d do not acquire image information from the decoders 2081a, 2081b, and 2081c, Any conversion can be performed in accordance with the monitor information (actual monitor information) and the description of the ENAV document.

  Furthermore, the still image data and animation / moving image data that have undergone pixel conversion are transmitted to the still image resizing unit 203g or the animation / moving image resizing unit 203h according to an instruction (conversion control) of the XHTML / CSS layout manager 207. As shown in FIG. 5, it is converted into a specified size (reduction, enlargement, equal magnification, etc.) (still image resizing, animation / moving image resizing).

  The DVD video is resized as necessary by the DVD video resizing unit 203f. The still image is resized as necessary by the still image resizing unit 203g. The animation / moving image is resized as necessary by the animation / moving image resizing unit 203h. The background image is resized as necessary by the background image resizing unit 203i.

  Pixel conversion and resizing can be realized by reversing the order, that is, by performing specified pixel conversion after resizing to a specified size. Here, when pixel conversion or resizing is performed, image quality degradation occurs in each conversion. Therefore, by changing the order of pixel conversion and the order of resizing by the conversion method and resizing method, the deterioration can be suppressed. For example, if enlargement (resizing) is performed after LB conversion (pixel conversion), an error caused by LB conversion becomes large due to enlargement. In this case, if LB conversion (pixel conversion) is performed after enlargement (resizing), it is not necessary to increase the error.

  Finally, the resized still image data, animation / moving image data is placed at the position specified in the ENAV document by the layout engine 203j (layout control from the XHTML / CSS layout manager 207) and mixed. It is mixed with DVD video and other ENAV elements (font, background) on the frame memory of the device 203k.

  The text data of the ENAV document is decoded by the font decoder 2081c of the element decoder 2081 using the font data, and rasterized by the font engine / font pixel conversion unit 203c. At the same time, the font engine / font pixel conversion unit 203c can obtain information from the ENAV interface handler 202 according to the instruction (conversion control) of the XHTML / CSS layout manager 207 (monitor information). ) ′, Pixel conversion is performed as necessary based on information (image information) from the font decoder 2081c (font pixel conversion). Here, the conversion control, monitor information (actual monitor information), and image information (optimum monitor information) are the same as the above-described still image data and animation / moving image data.

  In addition, since the font data stores data corresponding to the size to be displayed, resizing is not necessary if the font data requested by the XHTML / CSS layout manager 207 is used. However, if the font size stored as font data is not sufficient, it is necessary to convert (enlarge or reduce) font data of a certain size into font data of a specified size.

  Further, the rasterized font data is subjected to correction of character spacing and character width by the line layout engine 203n. This is a function for adjusting the character string or the number of characters to be laid out in one row and one column specified by the ENAV document so as to fit within the specification of the ENAV document. For example, when a certain character string to be arranged in one line extends over two lines, the character string is arranged so as to fit in one line by reducing the character spacing and the character width. Conversely, if the character string to be placed on the entire line is less than the entire line, it is placed on the entire line by increasing the character spacing and the character width.

  Finally, the font data is arranged at the position specified by the ENAV document by the layout engine 203j (layout control), and the DVD video or other ENAV element (on the frame memory of the hybrid 203k ( (Still image, animation / movie, background)

  There are two types of background image data: a case where still image data recorded on an enhanced DVD disc or the server unit 500 is used, and a case where a background image designated by the AV renderer 203 is created.

  In the former, the still picture data designated as the background picture in the ENAV document is decoded by the background picture decoder 2081d in the element decoder 2081. Further, the decoded background image data is output from the background image / pixel conversion unit 203d in the AV renderer 203 as an instruction (conversion control) of the XHTML / CSS layout manager 207, which can be acquired from the ENAV interface handler. Pixel conversion is performed based on the specified monitor information (monitor information) 'and information (image information) from the background image decoder (background image / pixel conversion). Here, the conversion control, monitor information (actual monitor information), and image information (optimum monitor information) are the same as the above-described still image data and animation / moving image data.

  Further, the background image data subjected to pixel conversion is converted into a specified size (reduction, enlargement, equal magnification, etc.) in the background image resizing unit 203i according to an instruction (conversion control) of the XHTML / CSS layout manager 207. (Background image resizing).

  The resized background image data is developed in a background frame memory (not shown) by the method specified in the ENAV document. For example, as a developing method, there are a method of arranging one background image data at a designated position and a method of arranging a plurality of the same background image data side by side.

  Finally, the data in the background frame memory is expanded in the frame memory of the hybrid 203k. At this time, the background frame memory data is exclusive-ORed with the frame memory data of the hybrid 203k composed of DVD video and other ENAV elements (still images, animations / moving images, fonts). Are added to the frame memory of the hybrid 204k. That is, the background image frame memory data is transferred to the frame memory of the hybrid unit 203k only for the pixels on the frame memory of the hybrid unit 203k in which still image, animation / moving image, and font data are not arranged. Deploy. As a result, still image data, animation / moving image data, and font data are arranged with priority (above) over background image data.

  In the latter case, the background generation unit 203e of the AV renderer 203 creates background data based on information such as “color” and “pattern” specified in the ENAV document. The created background data is expanded in the background frame memory in the same manner as the former, and is mixed with the DVD video and other ENAV elements in the frame memory of the hybrid 203k.

  Priorities overlapped with DVD-Video data including background data and ENAV elements are defined by Markup documents such as HTML / XHTML and CSS. In other words, the transparency (so-called alpha blending) of each element (ie, DVD-Video, ENAV element including background data) is described in the Markup document.

  The DVD video content and ENAV content expanded in the frame memory of the hybrid 203k are D / A converted by the D / A conversion & LB / PS conversion unit 203m, and then the XHTML / CSS layout manager 207 according to the ENAV document. In response to the instruction (conversion control), “PS conversion”, “LB conversion”, and “no conversion” are processed and output to the connected monitor (D / A conversion & LB / PS conversion). At this time, switching between “LB conversion”, “PS conversion”, and “no conversion” by the XHTML / CSS layout manager 207 can be performed by user operation as long as the description of the ENAV document permits. That is, the conversion switching described above is transmitted to the AV renderer 203 as an AV output control by a user trigger from the user interface unit 400.

  In addition, the above-described D / A conversion and LB / PS conversion can be reversed in the order of conversion. That is, the data on the frame memory in the hybrid 203k is subjected to LB / PS conversion and developed into a new frame memory, and then D / A conversion is performed. The former method of performing LB / PS conversion after performing D / A conversion can be realized with a small number of frame memories while suppressing deterioration in image quality in the two conversions. On the other hand, the latter method of LB / PS conversion requires a frame memory, but can increase the degree of freedom of LB / PS conversion.

  The effect of performing pixel conversion will be described below.

  As shown in FIG. 6, there are various types of monitors such as a PC monitor, a 4: 3 TV monitor, and a 16: 9 TV monitor. Each monitor has a different pixel arrangement, and the PC monitor has a uniform vertical and horizontal pixel (Square Pixel), whereas the 4: 3 TV monitor has an aspect ratio of about 1: 1.2. A 16: 9 TV monitor has an aspect ratio of about 1: 1.6 (Rectangle Pixel). That is, an original image that is a perfect circle on a PC monitor becomes a horizontally long ellipse when projected on a 4: 3 TV monitor, and appears on a horizontally long ellipse on a 16: 9 TV monitor.

  Therefore, in order to display an appropriate video on each monitor, it is necessary to prepare contents for each monitor. FIG. 7 shows a flow when different contents are reproduced according to the designated monitor type.

  When the activation is instructed, ENAV engine 200 reads the ENAV document (DVDINDEX.HTM) for activation on the enhanced DVD disc (ST101). For example, DVDINDEX. The HTM refers to the output monitor information selected by the user (actual monitor information), specifically, the initial display aspect ratio (SPRM (14)) in the video player configuration (P_CFG) (ST102), An instruction for reading a predetermined file is described. When the output monitor information is “00b” representing “4: 3 TV monitor”, “INDEX_1.HTM” is read (ST121), and when the output monitor information is “11b” representing “16: 9 TV monitor”, “11b” is read. INDEX_2.HTM is read (ST131). If the output monitor information is “10b” indicating “PC monitor”, “INDEX — 0.HTM” is read (ST111). “INDEX_1.HTM”, an ENAV document for 4: 3 TV monitors, describes references to ENAV contents (still images, animations / videos, fonts, backgrounds) for 4: 3 TV monitors, and DVD video Method of outputting content to 4: 3 TV monitor (current display mode of video player configuration: “normal or wide (no conversion)”, “pan scan (PS conversion)”, “letter box (LB conversion)”) Is described. Accordingly, ENAV content for 4: 3 TV monitor can be read (ST122) and displayed on the 4: 3 TV monitor (ST123).

  Similarly, “INDEX_2.HTM” describes an ENAV content reference for 16: 9 TV monitor and an instruction for DVD video content. Accordingly, ENAV content for 16: 9 TV monitor can be read (ST132) and displayed on the 16: 9 TV monitor (ST133).

  Similarly, “INDEX — 0.HTM” describes an ENAV content reference for a PC monitor and an instruction for DVD video content. Accordingly, ENAV contents for PC monitor can be read (ST112) and displayed on the PC monitor (ST113).

  In this example, since all ENAV contents are created for the output monitor, there is no need for pixel conversion. That is, “no conversion” is designated in still image / pixel conversion, animation / moving image / pixel conversion, font pixel conversion, and background image / pixel conversion.

  As another example, in order to display an appropriate video on each monitor, a CSS (cascading style sheet) file that is information for controlling the position and size of the content may be prepared for these monitors. . FIG. 17 is a flowchart showing reproduction of different contents according to a designated monitor type using a CSS file. FIG. 18 is a diagram illustrating an example of a CSS file.

  When the activation is instructed, ENAV engine 200 reads the ENAV document (DVDINDEX.HTM) for activation on the enhanced DVD disc (ST101). For example, DVDINDEX. The HTM refers to the output monitor information selected by the user (actual monitor information), specifically, the initial display aspect ratio (SPRM (14)) in the video player configuration (P_CFG) (ST102), An instruction to read a CSS (Cascading Style Sheet) file is described. When the output monitor information is “00b” representing “4: 3 TV monitor”, “4_3_style.css” is read (ST121 #), and when the output monitor information is “11b” representing “16: 9 TV monitor”. “16_9_style.css” is read (ST131 #). If the output monitor information is “10b” indicating “PC monitor”, “pc_style.css” is read (ST111 #). “4 — 3_style.css”, which is an ENAV document for 4: 3 TV monitor, includes positional information (ordinate and horizontal coordinate) for laying out ENAV contents (still images, animation / video, font, background) for 4: 3 TV monitor. Coordinate) and size information (vertical / horizontal length, or enlargement / reduction ratio) are described, and a method of outputting DVD video content to a 4: 3 TV monitor (current display mode of video player configuration: “ "Normal or wide (no conversion)", "pan scan (PS conversion)", "letter box (LB conversion)").

  Similarly, “16_9_style.css” describes position / size information for layout of ENAV content for 16: 9 TV monitor, and instructions for DVD video content.

  Similarly, “pc_style.css” describes position / size information for the layout of the ENAV contents for the PC monitor, and instructions for the DVD video contents.

  Therefore, ENAV content can be displayed on the 4: 3 TV monitor in accordance with “4_3_style.css” (ST122 #, 123 #). Alternatively, ENAV content can be displayed on a 16: 9 TV monitor in accordance with “16_9_style.css” (ST132 #, 133 #). Alternatively, ENAV content can be displayed on the PC monitor according to “pc_style.css” (ST112 #, 113 #).

  However, preparing each content for each monitor places a burden on the content provider to create content, and also increases the amount of ENAV content occupied by the disk and buffer. Therefore, a method of sharing content for a certain monitor (still image, animation / moving image, font, background image) with other monitors will be described below. That is, when content for a certain monitor is not prepared, display is performed using the other monitor content prepared. At this time, a method of performing image processing such as pixel conversion and resizing as needed (by an instruction of ENAV document or setting of a playback device) will be described.

  FIG. 8 shows an example of pixel conversion when the content for 4: 3 TV monitor is displayed on the 4: 3 TV monitor, 16: 9 TV monitor, and PC monitor.

  Each pixel conversion unit (still image / pixel conversion unit 203a, animation / moving image / pixel conversion unit 203b, font pixel conversion unit 203c, background image / pixel conversion unit 203d) includes each decoder (still image decoder 2081a, animation / moving image decoder). 2081b, font decoder 2081c, background picture decoder 2081d), image data and image information (whether the image is assumed to be “4: 3 TV monitor”, “16: 9 TV monitor”, or “PC monitor”). Receiving and recognizing that the image data is for 4: 3 TV monitor. Here, the monitor on which the image data is supposed to be displayed can be described not in the image data itself but in the ENAV document.

  Next, referring to the current display mode of the video player configuration (P_CFG), the designated monitor is examined (ST201). That is, “monitor information” transmitted from the ENAV interface to each pixel conversion unit is referred to. At this time, if the designated monitor is a 4: 3 TV monitor, the monitor on which the display of the content is assumed matches the monitor on which the display is designated, so that it is not necessary to perform pixel conversion. (ST222).

  When the designated monitor is a 16: 9 TV monitor, whether or not to perform pixel conversion is referred from the ENAV document description, that is, from the conversion control sent from the XHTML / CSS layout manager 207 to each pixel conversion unit. (ST211). When pixel conversion is not performed (ST211, NO), the data is output as it is (ST212). However, at this time, the content is displayed horizontally longer than expected. If pixel conversion is to be performed (ST211, YES), LB conversion or PS conversion is also performed according to the ENAV document description (conversion control from the XHTML / CSS layout manager 207) (ST213, ST214, ST215). . In the LB conversion in this case, there are areas where partial display is not performed at the right end and the left end of the display area. In the PS conversion in this case, the upper part and the lower part of the original content are not displayed.

  When the designated monitor is a PC monitor, whether or not to perform pixel conversion is referred from the description of the ENAV document, that is, from the conversion control sent from the XHTML / CSS layout manager 207 to each pixel conversion unit (ST211). ). When pixel conversion is not performed (ST231, NO), the data is output as it is (ST232). However, at this time, the content is displayed slightly vertically longer than expected. If pixel conversion is to be performed (ST231, YES), LB conversion or PS conversion is also performed by this ENAV document description (conversion control from the XHTML / CSS layout manager 207) (ST233, ST234, ST235). . In the LB conversion in this case, there are areas where partial display is not performed in the upper and lower stages of the display area. In the PS conversion in this case, a part of the right end and the left end of the original content is not displayed.

  FIG. 9 shows an example of pixel conversion when the content for 16: 9 TV monitor is displayed on the 4: 3 TV monitor, 16: 9 TV monitor, and PC monitor.

  Each pixel conversion unit (still image / pixel conversion unit 203a, animation / moving image / pixel conversion unit 203b, font pixel conversion unit 203c, background image / pixel conversion unit 203d) includes each decoder (still image decoder 2081a, animation / moving image decoder). 2081b, font decoder 2081c, background picture decoder 2081d), image data and image information (whether the image is assumed to be “4: 3 TV monitor”, “16: 9 TV monitor”, or “PC monitor”). Receiving and recognizing that the image data is for 16: 9 TV monitor. Here, the monitor on which the image data is supposed to be displayed can be described not in the image data itself but in the ENAV document.

  Next, referring to the current display mode of the video player configuration (P_CFG), the designated monitor is examined (ST301). That is, “monitor information” transmitted from the ENAV interface to each pixel conversion unit is referred to. At this time, if the designated monitor is a 16: 9 TV monitor, the monitor on which the display of the content is assumed matches the monitor on which the display is designated, so that it is not necessary to perform pixel conversion. (ST332).

  If the specified monitor is a 4: 3 TV monitor, refer to whether or not to perform pixel conversion from the ENAV document description, that is, from the conversion control sent from the XHTML / CSS layout manager 207 to each pixel conversion unit. (ST321). When pixel conversion is not performed (ST321, NO), the data is output as it is (ST322). However, at this time, the content is displayed vertically longer than expected. If pixel conversion is to be performed (ST321, YES), this is also LB conversion or PS conversion (ST323, ST324, ST325) based on the ENAV document description (conversion control from the XHTML / CSS layout manager 207). . In the LB conversion in this case, there are areas where partial display is not performed in the upper and lower stages of the display area. In the PS conversion in this case, a part of the right end and the left end of the original content is not displayed.

  If the designated monitor is a PC monitor, whether or not to perform pixel conversion is referred from the description of the ENAV document, that is, from the conversion control sent from the XHTML / CSS layout manager 207 to each pixel conversion unit (ST311). ). When pixel conversion is not performed (ST311, NO), the data is output as it is (ST312). However, at this time, the content is displayed slightly vertically longer than expected. If pixel conversion is to be performed (ST311: YES), this is also LB conversion or PS conversion (ST313, ST314, ST315) based on the ENAV document description (conversion control from the XHTML / CSS layout manager 207). . In the LB conversion in this case, there are areas where partial display is not performed in the upper and lower stages of the display area. In the PS conversion in this case, a part of the right end and the left end of the original content is not displayed.

  FIG. 10 shows an example of pixel conversion when content for a PC monitor is displayed on a 4: 3 TV monitor, a 16: 9 TV monitor, and a PC monitor.

  Each pixel conversion unit (still image / pixel conversion unit 203a, animation / moving image / pixel conversion unit 203b, font pixel conversion unit 203c, background image / pixel conversion unit 203d) includes each decoder (still image decoder 2081a, animation / moving image decoder). 2081b, font decoder 2081c, background picture decoder 2081d), image data and image information (whether the image is assumed to be “4: 3 TV monitor”, “16: 9 TV monitor”, or “PC monitor”). Receiving and recognizing that the image data is for PC monitor. Here, the monitor on which the image data is supposed to be displayed can be described not in the image data itself but in the ENAV document.

  Next, referring to the current display mode of the video player configuration (P_CFG), the designated monitor is examined (ST401). That is, “monitor information” transmitted from the ENAV interface to each pixel conversion unit is referred to. At this time, if the designated monitor is a PC monitor, the monitor on which the display of the content is assumed matches the monitor on which the display is designated, and therefore pixel conversion is not necessary (ST412). ).

  If the specified monitor is a 4: 3 TV monitor, refer to whether or not to perform pixel conversion from the ENAV document description, that is, from the conversion control sent from the XHTML / CSS layout manager 207 to each pixel conversion unit. (ST421). When pixel conversion is not performed (ST421, NO), the data is output as it is (ST422). At this time, however, the content is displayed in a slightly longer landscape than expected. If pixel conversion is to be performed (ST421, YES), this is also LB conversion or PS conversion (ST423, ST424, ST425) according to the ENAV document description (conversion control from the XHTML / CSS layout manager 207). . In the LB conversion in this case, there are areas where partial display is not performed at the right end and the left end of the display area. In the PS conversion in this case, the upper part and the lower part of the original content are not displayed.

  When the designated monitor is a 16: 9 TV monitor, whether or not to perform pixel conversion is referred from the ENAV document description, that is, from the conversion control sent from the XHTML / CSS layout manager 207 to each pixel conversion unit. (ST431). When pixel conversion is not performed (ST431, NO), the data is output as it is (ST432). However, at this time, the content is displayed horizontally longer than expected. If pixel conversion is to be performed (ST431, YES), LB conversion or PS conversion is also performed according to the ENAV document description (conversion control from the XHTML / CSS layout manager 207) (ST433, ST434, ST435). . In the LB conversion in this case, there are areas where partial display is not performed at the right end and the left end of the display area. In the PS conversion in this case, the upper part and the lower part of the original content are not displayed.

  FIG. 11 shows an example when DVD video content and ENAV content are displayed on a 16: 9 TV monitor using the above-described pixel conversion function. For example, DVD video content is assumed to be content assuming a 16: 9 TV monitor, ENAV content is assumed to be a background image assuming a 16: 9 TV monitor, a still image assuming a 4: 3 TV monitor, and a font assuming a PC monitor. It shall be.

  For DVD video content, the monitor “16: 9 TV monitor” that is supposed to display matches the monitor “16: 9 TV monitor” that is actually specified to display, so pixel conversion was not performed and the ENAV document specified Resizing (in this case, reduced display) is performed.

  Similarly, for the background image, the monitor assumed to be displayed matches the monitor that is actually designated for display, so pixel resizing is not performed and resizing specified by the ENAV document is performed.

  Regarding the still image, since the monitor “4: 3 TV monitor” assumed to be displayed is different from the monitor “16: 9 TV monitor” actually designated to be displayed, the conversion shown in FIG. 8 is performed. In this example, “perform pixel conversion by LB conversion” is specified by the ENAV document. Further, resizing specified by the ENAV document is performed.

  Regarding the font, since the monitor “PC monitor” assumed to be displayed is different from the monitor “16: 9 TV monitor” actually designated to be displayed, conversion as shown in FIG. 10 is performed. In this example, “no pixel conversion” is designated by the ENAV document. Also, if the ENAV document specifies the size of the font to be displayed and font data of that size is prepared, resizing is not necessary.

  As described above, even if the DVD video content and each ENAV content are supposed to be displayed on different monitors, appropriate display can be performed by performing pixel conversion specified by the ENAV document. It becomes possible. As a result, for example, content created by a content provider to configure a site on the Internet, that is, content created for PC use can be used for ENAV content recorded on an enhanced DVD disc or a server unit. .

  Next, a method for displaying content assumed to be displayed on a certain monitor on different monitors in accordance with the instruction of the ENAV document will be described. Here, the ENAV page (consisting of DVD video content and ENAV content (still image, font, background image)) assumed to be displayed on the 16: 9 TV monitor in FIG. 11 is displayed on the 4: 3 TV monitor. An example is shown.

  FIG. 12 shows a D / A conversion & LB / PS conversion unit for an ENAV page (FIG. 11) assuming a 16: 9 TV monitor according to the instruction of the ENAV document, that is, according to the conversion control from the XHTML / CSS layout manager 207. This is an example in which letterbox conversion is performed at 203 m and output to a 4: 3 TV monitor. In this letterbox, there are areas where partial display is not performed in the upper and lower stages of the monitor.

  FIG. 13 shows a D / A conversion & LB / PS conversion unit for an ENAV page (FIG. 11) assuming a 16: 9 TV monitor according to an instruction of the ENAV document, that is, according to conversion control from the XHTML / CSS layout manager 207. In this example, pan scan conversion is performed at 203 m and output to a 4: 3 TV monitor. A part of the right end and the left end of the ENAV page is not displayed. For example, the non-display area and the display area can be designated at any time by an ENAV document, and can be changed at any time by a user event by a user operation.

  Here, the letterbox conversion and the pan-scan conversion in FIGS. 12 and 13 can be designated at any time by the ENAV document, and can be switched at any time by a user event by a user operation.

  However, in FIG. 12, the area actually displayed is smaller than the area of the 4: 3 TV monitor, that is, a non-display area exists in the TV monitor. In FIG. There is also a problem that part of the page is not displayed. Therefore, FIG. 14 shows an example in which the same DVD video content and ENAV content (still image, font, background image) used for displaying the ENAV page of FIG. However, this conversion can be realized as a function of the playback apparatus even when there is no instruction from the ENAV document.

  Here, the 16: 9 TV monitor DVD video content is letterbox converted. The background image for 16: 9 TV monitor is pan-scan converted with the right and left edges cut off. The 4: 3 TV monitor still image is not converted because it was originally assumed to be displayed on the 4: 3 TV monitor. No conversion is performed for PC monitor fonts.

  In this example, the layout is slightly different from that of the 16: 9 TV monitor screen shown in FIG. 11, but the font is easier to read than in FIG. 12, and the still image and the background image are also shown larger. Also, the area that cannot be displayed is smaller than that in FIG.

  In this example, the resizing size and the font size used for display are the same as those in FIG. That is, for the content for 16: 9 TV monitor as shown in FIG. 11, the playback device automatically performs pixel conversion from the image information of the DVD video content and ENAV content (still image, font, background image). It can be projected on a 4: 3 TV monitor such as 14.

  FIG. 15 shows another example in which the content for 16: 9 TV monitor shown in FIG. 11 is used and output to the 4: 3 TV monitor. Here, 16: 9 TV monitor DVD video content is pan-scan converted. A 16: 9 TV monitor background image is also pan-scan converted with the right and left edges cut off. The 4: 3 TV monitor still image is not converted because it was originally assumed to be displayed on the 4: 3 TV monitor. No conversion is performed for PC monitor fonts.

  Here, letterbox conversion and pan-scan conversion of DVD video contents in FIGS. 14 and 15 can be designated at any time by an ENAV document, and can be switched at any time by a user event by a user operation.

  Here, the outline of the present invention will be summarized with reference to the flowchart shown in FIG. The DVD video content C1 is obtained from the enhanced DVD video disc D2, and ENAV content C21 and C22 are obtained from at least one of the enhanced DVD video disc D2 and the external server unit 500 via the communication line (ST501). Here, based on actual monitor information, optimal monitor information, image conversion information (conversion control), and image data characteristics (characteristics such as still images, moving images, animations, fonts, backgrounds, etc.) Image data included in the video content C1 and ENAV content C21 and C22 is subjected to image processing (ST502). The image processing referred to here is pixel conversion processing and resizing processing as described above. The DVD video content C1 and ENAV content C21 and C22 that have undergone image processing are reproduced in synchronization (ST503). As a result, the image data that has undergone image processing is appropriately output to a predetermined monitor. As a result, the content can be displayed on the designated monitor by the intended display method.

  Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the embodiments may be appropriately combined as much as possible, and in that case, the combined effect can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention Can be obtained as an invention.

It is a figure which shows an example of the data structure of a DVD video disc. It is a figure which shows an example of the data structure of an enhanced DVD video disc. It is a block diagram which shows an example of DVD reproducing | regenerating apparatus (information reproducing | regenerating apparatus). FIG. 4 is a block diagram showing details of an element decoder and an AV renderer applied to the DVD playback device shown in FIG. 3. It is a figure which shows an example of the pixel conversion of the content for PC monitors. It is a figure for demonstrating the difference of the characteristic of PC monitor, 4: 3 TV monitor, and 16: 9 TV monitor. It is a flowchart which shows an example of the content display method supposing the case where the content for PC monitor, 4: 3 TV monitor, and 16: 9 TV monitor is prepared. It is a flowchart which shows the example of pixel conversion when displaying the content for 4: 3TV monitors on a 4: 3TV monitor, a 16: 9TV monitor, and a PC monitor. It is a flowchart which shows the example of pixel conversion when displaying the content for 16: 9 TV monitors on a 4: 3 TV monitor, a 16: 9 TV monitor, and a PC monitor. It is a flowchart which shows the example of a pixel conversion when displaying the content for PC monitors on a 4: 3 TV monitor, a 16: 9 TV monitor, and a PC monitor. It is a figure which shows the example when displaying a DVD video content and ENAV content on a 16: 9 TV monitor. It is a figure which shows the example when DVD video content and ENAV content are LB-converted and displayed on a 4: 3 TV monitor. It is a figure which shows the example when PS-converting DVD video content and ENAV content, and displaying them on a 4: 3 TV monitor. It is a figure which shows the example 1 of a display which adds various conversion to DVD video content and ENAV content, and displays it on a 4: 3 TV monitor. It is a figure which shows the example 2 of a display which adds various conversion to DVD video content and ENAV content, and displays it on a 4: 3 TV monitor. It is a flowchart for demonstrating reproduction | regeneration with the image process for making it respond | correspond to various monitors. It is a flowchart for demonstrating reproduction | regeneration by the CSS file of the content according to the designated monitor type. It is a figure which shows an example of the description which refers to the CSS (Cascading Style Sheet) file in an HTML file.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lead-in area, 2 ... Volume / file structure information area, 3 ... DVD video area, 4 ... Other recording area, 5 ... Lead-out area, C1 ... DVD video content, C21 ... ENAV content (stored on disk), C22 ... ENAV content (stored in server), D1 ... DVD video disc, D2 ... enhanced DVD video disc, 100 ... DVD video playback engine, 101 ... DVD video decoder, 102 ... DVD video playback control unit, 200 ... ENAV engine, 201 ... User event controller, 202 ... ENAV interface handler, 203 ... AV renderer, 203a ... Still image / pixel conversion unit, 203b ... Animation / video / pixel conversion unit, 203c ... Font pixel conversion unit, 203d ... Background image Pixel conversion unit, 203e ... background generation unit, 203f ... DVD video resizing unit, 203g ... still image resizing unit, 203h ... animation / moving image resizing unit, 203i ... background image resizing unit, 203j ... background frame memory , 203k ... hybrid, 204 ... buffer manager, 205 ... ECMAScript interpreter & DOM manipulator, 206 ... SMIL timing engine, 207 ... XHTML / CSS layout manager, 2081, 2082 ... element decoder, 2081a ... still picture decoder, 2081b: animation / moving picture decoder, 2081c: font decoder, 2081d ... background picture decoder, 209 ... ENAV buffer, 210 ... XHTML + SMIL / CSS parser, 21 DESCRIPTION OF SYMBOLS 1 ... Internet connection part, 300 ... Disk part, 400 ... User interface part, 500 ... Server part

Claims (2)

First acquisition means for acquiring content from an information storage medium;
Second acquisition means for acquiring extended information including first and second image data from at least one of the information storage medium and the outside via the communication line;
Image processing means for processing the first and second image data included in the content and the extended information;
Playing back the content, and playing back the first and second image data processed by the image processing means in synchronization with the playback of the content,
The image processing means includes
The actual monitor information that is the output destination of the extended information is compared with the first designated monitor information that is optimal as the output destination of the first image data, and the right end of the display area that is the output destination based on the mismatch between the two The first image data is converted to a first output format that is output with a non-display area at the left end or a second output format that is displayed by cutting the upper and lower stages, and the first image data is converted based on a match between the first and second image data. Alternatively, the first image data is not converted to the second output format, and the actual monitor information is compared with the second designated monitor information optimal as the output destination of the second image data. Converting the second image data to the first or second output format based on the mismatch, and not converting the second image data to the first or second output format based on the match between the two , Further, the content included in the content 3 image data is also converted to the first output format, converted to the second output format, or non-converted.
An information reproducing apparatus characterized by that. Acquiring content from information storage media,
Obtaining extended information including first and second image data from at least one of the information storage medium and the outside via a communication line;
The actual monitor information that is the output destination of the extended information is compared with the first designated monitor information that is optimal as the output destination of the first image data, and the right end of the display area that is the output destination based on the mismatch between the two The first image data is converted to a first output format that is output with a non-display area at the left end or a second output format that is displayed with the upper and lower sections cut, and the first image data is converted based on a match between the first and second image data. Alternatively, the first image data is not converted to the second output format, and the actual monitor information is compared with the second designated monitor information optimal as the output destination of the second image data. Converting the second image data to the first or second output format based on the mismatch, and not converting the second image data to the first or second output format based on the match between the two, Further, the content included in the content 3 image data is also converted to the first output format, converted to the second output format, or non-converted,
Playing back the content and playing back the first and second image data in synchronization with the playback of the content;
An information reproduction method characterized by the above.

Images