KR20040107303A - Apparatus for setting presentation option of DVD and method for the same - Google Patents

Abstract

PURPOSE: A device for setting a reproduction option of a DVD and a method therefor are provided to store settings for audio, sub picture, and other reproduction-related options, and to automatically set a reproduction-related option preferred by a user when the user wants to enjoy a new DVD title, thereby removing inconvenience of manually setting the options. CONSTITUTION: A DVD title is recorded with presentation data and navigation data. A front-end unit(101) optically reads data recorded on the DVD title when a reproduction of the DVD title is selected. A DVD data processor(102) demodulates the read data while performing an error correction, separates the presentation data from the navigation data, and re-separates the presentation data into audio/video/sub picture data. An A/V/sub picture decoder(104) decodes the separated A/V/sub picture data, respectively. A navigation manager(105) receives the separated navigation data, and controls the decoder(104) to perform a reproduction process. A reproduction option setup controller(107) obtains statistics for a reproduction option set by a user whenever the reproduction option is manually set, obtains the user's preferred reproduction option to store the option, and automatically sets the user's preferred reproduction option on other DVD title when the other DVD title is reproduced.

Description

Apparatus for setting presentation option of DVD and method for the same}

The present invention relates to the setting of playback options when playing a DVD title in a DVD player or a composite device having a digital TV reception function and a DVD playback function. In particular, the present invention relates to an option setting related to playback of a title when a DVD is played. When a user wants to play a new DVD title, the present invention relates to an apparatus and a method for automatically setting playback related options according to a user's preferred option setting value.

The Digital Versatile Disc (DVD) is replacing digital video tape at a high speed by using digital video compression using MPEG-2 (Moving Picture Experts Group) -2 to provide much higher image quality and sound quality. In particular, as a function only in DVD, there is subpicture data that can process 32 languages as subtitles. In other words, the user can watch the subtitles with all subtitles deleted or select the desired language from 32 languages as subtitles, and in the case of a voice language, the user can select up to 8 languages such as English, Chinese, and German for viewing. Excellent performance for learning. And with support for up to eight digital audio tracks, you can dub eight languages, including English, Japanese, and French, at the same time. In addition, unlike conventional VTRs, VCDs, and LDs, DVDs can be viewed in a variety of 4: 3 TVs based on a 16: 9 wide screen. At this time, the title must be produced in 16: 9 in order to watch in wide full screen.Then, the scenes shot from up to nine different angles can be saved at the same time. Enjoy. In particular, music videos and sports titles provide more realistic and realistic images. The multi-angle feature requires DVD titles to be multi-angled. In addition, if the film is made of multi-story, it has the ability to choose from several preset stories. For example, if you choose to play a variety of story developments such as Happy Ending and Sad Ending, you can enjoy your own movie according to your taste.

As a result, the market for DVD players is growing rapidly, and systems such as DTV + DVD composite set-top boxes have emerged to support the ability to play DVDs in digital TV. However, in order to satisfy the needs of the user, continuous function improvement of the DVD player is required, and in particular, the user's operability is important in the DVD player.

In general operation of a DVD player, a DVD to be played is mounted on a tray, and then a user selects a language of audio, subtitle existence setting, and a language for displaying subtitles during playback through a remote control. When a user watches a DVD title, playback options, such as audio language or subtitle display language, often choose consistent settings.

Therefore, when a user saves a language option that is frequently selected and then plays another DVD title, the user manually plays the language if there is a function that automatically sets the language and other play options according to the stored settings. This saves you the trouble of setting options.

However, the conventional DVD playback apparatus lacks a function of automatically setting a playback option without a user's operation when playing a DVD title. That is, in setting options such as language selection of audio and subpictures during playback of a DVD title, manual processes such as remote control operation by a user must be performed. This may cause inconvenience to the user during the playback of the disc. That is, the conventional method has a problem that requires the user to manually set a new playback related option every time the disk is replaced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to identify a play-related option that a user frequently selects when playing a DVD title, and then select a play-related option of a new DVD title according to the identified play-related options. The present invention provides an apparatus and method for setting a playback option of a DVD that improves the user's operability related to a playback function in a DVD playback apparatus such as a DVD player or a digital TV + DVD composite apparatus.

1 is a block diagram of a configuration of a playback option setting apparatus according to the present invention in a DVD playback system;

FIG. 2 is a diagram illustrating an embodiment of a connection configuration between a playback option setting controller and a navigation manager of FIG. 1;

3 is an operation flowchart showing an embodiment of a user preference option extraction process according to the present invention;

4 is a flowchart illustrating an embodiment of a process of automatically setting a playback related option during DVD playback according to the present invention.

FIG. 5 is a configuration diagram of VTS_AST_ATR of FIG. 4.

FIG. 6 is a configuration diagram of VTS_SPST_ATR of FIG. 4.

Explanation of symbols for main parts of the drawings

101: front end portion 102: DVD data processing portion

103; Stream Demultiplexer 104: A / V / Subpicture Decoder

105: navigation manager 106: mixer

107: playback option setting control unit 108: register

In order to achieve the above object, a playback option setting apparatus for a DVD according to the present invention includes: a DVD title having presentation data to be played back and navigation data used for the presentation data being recorded; A front end for optically reading the data recorded in the DVD title when playback of the DVD title is selected; A data processor for demodulating and error correcting the data read through the front end, separating the presentation data and the navigation data, and separating the presentation data into audio / video / subpicture data; An A / V / subpicture decoder for decoding the separated A / V / subpicture data, respectively; A navigation manager which receives the navigation data separated by the data processor and controls the A / V / subpicture decoder to perform a reproduction operation corresponding to a user's key input; Whenever the user manually sets a playback option when playing a DVD title in conjunction with the navigation manager, the user obtains statistics on a playback option set by the user, and obtains and saves a user's preferred playback option based on the statistical information. And a playback option setting control unit for automatically setting the user preferred playback option to the DVD title when playing another DVD title.

The play option setting control unit may determine the stream number corresponding to the user's preferred play option by using the disc information of the DVD title of the currently selected play, and automatically set the play option by changing the GPRM and SPRM values. do.

The playback option setting control unit may independently calculate histogram information on a specific playback option according to the original language to determine a user's preferred playback option.

In the DVD playback option setting method according to the present invention,

(a) confirming a playback option manually set by the user for the DVD title whose current playback is selected;

(b) determining a user preferred playback option in a combination consisting of option values having the most frequency after updating the corresponding playback option histogram information according to the manually set playback option, and storing in the memory; And

and (c) automatically setting the stored user preference playback option to the DVD title when the user selects playback of a new DVD title.

The step (c) reads the navigation data from the DVD title of which playback is currently selected, parsing a language code corresponding to the original language from the read navigation data, and audio / sub of the original language of the DVD title parsed in the step. Reading user preferred playback options, such as picture language settings, from memory; retrieving a stream number corresponding to the user preferred audio / subpicture language code for the DVD title currently selected for playback; And the SPRM and GPRM values are changed to the audio / subpicture stream number.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings illustrating the configuration and operation of the embodiment of the present invention, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, By the technical spirit of the present invention described above and its core configuration and operation is not limited.

1 is a block diagram showing an embodiment of a DVD playback system equipped with a playback option setting apparatus according to the present invention, and includes an RF signal for reproducing data recorded on a DVD 101a and a focus error signal for servo control. After generating a tracking error signal, the RF signal is digitized, amplified and output, and the focus error signal and the tracking error signal are front-end unit 101 used for servo control, from the amplified RF signal. DVD data processor 102 for demodulating and error correcting DVD data, and demultiplexing DVD data output from the DVD data processor 102 to separate audio / video / subpicture / navigation stream data. The A / V / subpicture stream data is output from the stream demultiplexer 103 and the stream demultiplexer 103 for output. Receives the navigation stream data output from the decoder 104 and the stream demultiplexer 103 which apply decoding to the A / V / subpicture stream data by applying the corresponding decoding algorithm, respectively, to the user's key input. A digital audio signal and video are combined by combining audio, video, and subpicture data decoded by the navigation manager 105 and the decoder 104 to control the read operation of the DVD 101a so that a corresponding operation is performed. In conjunction with the mixer 106 for outputting a signal and the navigation manager 105, the user stores the statistics on the option that the user normally selects when playing the DVD 101a. The playback option setting control unit 107 to grasp the playback related options and to automatically set the playback related options when another DVD title is played. It is sex.

In the present invention, a DVD title or a DVD or a disc has the same meaning, and they are used interchangeably for convenience of explanation.

In FIG. 1 configured as described above, the front end portion 101 is an optical system of a general DVD playback system, and the optical pickup 101b physically accesses and controls the disk 101a on which data is recorded. That is, the optical pickup 101b causes the light beam focused on the objective lens (not shown) under the control of the servo control unit 101d to be placed on the signal track of the DVD 101a, and also receives light reflected from the signal recording surface. The light is condensed by the objective lens and then converted into an electrical signal and output to the signal generator and preamplifier 101c. The signal generation and preamp (or RF module) unit 101c detects an RF signal for data reproduction, a focus error signal for servo control, and a tracking error signal from an input electrical signal, and then digitizes the RF signal. And outputs to the DVD data processor 102 through the amplification process, and outputs the focus error signal and the tracking error signal to the servo controller 101d. The servo control unit 101d generates a focus drive signal from the focus error signal so that the optical pickup 101b can read the data of the disk 101a accurately, and controls the focus actuator in the optical pickup 101b, A tracking drive signal is generated to control the tracking actuator in the optical pickup 101b. The servo controller 101d controls the drive of the disk motor 101f according to the focus error signal and the tracking error signal, and the disk motor 101f directly controls the rotation of the disk 101a.

The DVD data processor 102 performs 8/16 demodulation, error correction (ECC), and descramble on the digitized RF data DVD physically read from the front end unit 101. After that, it is output to the stream demultiplexer 103.

At this time, the presentation data and the navigation data are recorded on the DVD 101a. The presentation data includes sub-picture data such as audio and video data and subtitle video which are to be reproduced. The navigation data is information necessary for reproducing the presentation data recorded on the DVD. The navigation data includes video manager information (VMGI), video title set information (VTSI), and program chain information. Information (PGC), presentation control information, and data search information.

Accordingly, the stream demultiplexer 103 demultiplexes the DVD data output from the DVD data processor 102 into a presentation stream data and a navigation stream data, and the presentation stream data is again audio / video / The separated A / V / subpicture stream data is output to the A / V / subpicture decoder 104 after being separated into subpicture stream data, and the navigation stream data is output to the DSI unit 101e of the front end unit 101. And output to the navigation manager 105.

The A / V / sub-picture decoder 104 performs decoding on the input A / V / sub-picture stream data by applying a corresponding decoding algorithm and outputs the decoded data to the mixer 106.

The mixer 106 performs a combination and synchronization process of the decoded audio data, video and subpicture data, respectively, and outputs the digital audio signal and the video signal.

The navigation data separated from the stream demultiplexer 103, that is, data search information (DSI) and presentation control information (PCI) data, are output to a navigation manager 105, and the navigation manager 105 Controls the overall flow of DVD playback based on the DSI and PCI data.

On the other hand, the playback option setting control unit 107, in conjunction with the navigation manager 105, stores the statistics on the playback-related options that the user normally selects when playing the DVD (101a), and then based on the statistics information When playing a DVD title, the disc information of the corresponding DVD is used to determine the stream number corresponding to the user's preferred option, and then automatically change the general parameter (GPRM) and system parameter (SPRM) of the storage unit 108 to appropriate values. Set playback related options.

2 is a view showing an embodiment of a connection configuration of the DVD playback option setting control unit 107 and the navigation manager 105 according to the present invention, wherein the presentation data read from the DVD 101a is presented by the player 200. The output is output to the presentation engine 202a and the navigation data is output to the navigation manager 105. The presentation engine 202a is a block diagram in which the A / V / subpicture decoder 104 and the mixer unit 106 of FIG. 1 are integrated, and the presentation data recorded on the DVD 101a, that is, A / V. Decode and synthesize subpicture data and output the signal to the monitor.

The navigation manager 105 controls the presentation engine unit 202a according to a user's operation through an operation panel of the information input unit 201 or a remote controller, and simultaneously plays back option information set by the user. Output to (107).

That is, the DVD reproducing system only takes a simple control operation of the hardware, does not participate in the reproduction of the presentation data recorded on the DVD at all, and the reproduction of the presentation data depends entirely on the navigation data contained on the DVD. That is, according to the user's selection, the titles recorded on the DVD are reproduced in the order defined by the navigation data.

In this way, the navigation manager 105 uses the navigation data (for example, VMGI, VTSI, PGCI, PCI, DSI) read out from the disk 101a to control the configuration of the user interface, menu screen, and playback flow. Do this. In this case, the user may directly control the DVD playback flow by manipulating the remote controller of the information input unit 201, and the navigation manager 105 is also responsible for this function. That is, the navigation data includes the language type of the audio / subpicture selectable in the current DVD title to be reproduced, display options, angle configuration information, palette information necessary for configuring a menu screen, and the like. In this case, when the user sets the playback related option for the DVD title being played by using the remote controller of the information input unit 201, the playback related option setting information is output to the playback option setting control unit 107 through the navigation manager 105. The reproduction option setting control unit 107 may calculate statistics in the form of a histogram with respect to the reproduction option setting values. In this case, a storage space such as a ROM for storing statistics about an option value used by the user is required.

As a result, the combination of the setting values of each item that the user uses most is the user's preferred playback environment. The playback option setting control unit 107, in conjunction with the navigation unit 105, updates the frequency for this value when the user sets a specific option so as to determine the user preference option.

At this time, when the user inserts a new DVD title into the DVD playback system, the playback environment is automatically set for the new DVD title according to the user preference option.

In the present invention, as an embodiment, the range is limited to the setting for the language option of the audio and subpicture.

3 is a flowchart illustrating an embodiment of a process of extracting a user preference option according to the present invention. First, a playback related option manually set by a user is checked for a DVD title currently being played (step 301). Using this, the reproduction option histogram data is updated (step 302). The playback option histogram data consists of histograms of language options for audio / subpicture and the like during DVD playback set by the user so far.

Therefore, the user preference option combination is usually determined by using a combination of the most frequent option values after updating the histogram for the corresponding setting value when the user sets the playback related options through remote control operation or the like. The user preference option information thus determined is stored in a memory such as a ROM (step 303). For example, if the user most often selects the audio language option as English, the audio language is determined as English among the user's preferred options. Also, if Korean is most often selected for subtitle information, the user preferred subpicture option is determined to be Korean.

However, this combination is determined differently depending on the kind of original audio language of the DVD title, that is, the spoken language. For example, the language setting of the audio / subpicture selected by the user is different for the case where the original language of the DVD title is English (en) and the case of Korean (ko). For example, if the original language of the DVD title is English, the audio language is set to English and the subtitle language is set to Korean. If the original language is Korean, the audio language is Korean and subtitles are not used.

Therefore, in the present invention, the histogram information is aggregated independently according to the original language in the process of determining the user preference playback option. That is, histograms for options such as audio / subpicture are independently stored for the original language that the user reproduces the most. At this time, the number of original words storing the histogram may be arbitrarily limited according to the specifications of the system. For example, if the system can store histogram data for two original languages, and the user calculates the frequency of the original language of the title you are playing, it is determined that the most frequent frequencies for Korean and English are audio for both languages. Generate histogram data for the / subpicture option. As a result, the user preference playback option is determined independently according to the original language of the DVD title.

4 is a flowchart showing an embodiment of an automatic setting process of a playback related option when a DVD title is reproduced according to the present invention. When a new DVD title 101a is inserted into the DVD playback system (step 401), the disc 101a is displayed. The navigation data is read, and a language code corresponding to a spoken language is parsed from the read navigation data from VTSI or VMGI (step 402).

In general, when producing a DVD title, the original language is encoded in Audio stream # 0. Accordingly, VTS_AST_ATRT (audio stream attribute table of VTS) information is parsed from disk information such as VTSI or VMGI to parse language code information corresponding to Audio stream # 0. VTSI is contained in a file named VTS _ ?? _ 01.IFO (?? is a number from 01 to 99) on disk, and VMGI can be read from a file named VIDEO_TS.IFO. The VTS_AST_ATRT information may be obtained by parsing a video title set information management table (VTSI_MAT) existing in the VTSI. Also, the VTSI_MAT is stored in the first 2048 bytes of the VTSI and the actual valid information is 983 bytes. The VTS_AST_ATRT is located at the 516th to 579th bytes of VTSI_MAT. The VTS_AST_ATRT provides characteristic information on eight audio streams from audio streams # 0 to # 7. It is composed as follows. That is, FIG. 5 shows a configuration diagram of the VTS_AST_ATR.

At this time, the 16-bit size region (ie, bits 47 to 32) indicated by specific code in FIG. 5 indicates the language type of each audio stream and expresses the corresponding language information by the ASCII code value defined in the ISO 639 standard. For example, in Korean, the language code is ko and the ASCII code value is expressed as 6B6F in hexadecimal. That is, when the audio language code is Korean, a value of 6B6F is stored in bits 47 to 32 of VTS_AST_ATRT for the corresponding stream. Accordingly, in order to parse the code for the original language in the VTSI, 16 bit information corresponding to the specific code of VTS_AST_ATR corresponding to Audio stream # 0 may be read.

The process acquires source information of the currently inserted DVD and reads user preference playback options such as audio / subpicture language settings for the source code from the memory (step 403). Then, a process of retrieving a stream number corresponding to the user preferred audio and subpicture language code for the current DVD is performed (step 404). In this case, in the case of an audio stream, specific code information of VTS_AST_ATRT of each audio stream may be parsed to search for an audio stream that matches a desired code. In the case of a subpicture, VTS_SPST_ATR information can be used.

6 is a configuration diagram of VTS_SPST_ATR, and the VTS_SPST_ATR has a size of 6 bytes. At this time, the language code of the subpicture has a size of 16 bits and is stored in an area from the 31st bit to the 16th bit in VTS_SPST_ATR. The VTS_SPST_ATR is stored in byte 598 to 789 of VTSI_MAT. As described above, up to 32 subpictures can be stored in the DVD. In this case, the encoding method of the language code used is the same as that of audio. In the process of encoding a subpicture by a DVD title producer, even if the same Korean subtitle is encoded by different subpicture stream numbers for each DVD, Korean subtitles are encoded. In order to search for an included subpicture stream, a subpicture stream number having a specific code value of 6B6F must be found. Through the above search process, a desired audio and subpicture stream number is determined in the DVD to be played, and this stream number is required in the process of automatically setting the options required for playing the DVD title. At this time, since the characteristic information of the video stream and the subpicture stream is stored in a fixed position in the disk information, the search for these information does not take long.

On the other hand, the playback related environment variables of the DVD playback system are composed of the SPRM and GPRM registers 108. The SPRM register consists of 24 16-bit parameters and stores menu language, audio / subpicture / angle number, parental level, and initial language setting value of audio / subpicture. The GPRM consists of 16 16-bit parameters and can be used flexibly in the system. Therefore, the playback option setting control unit 107 completes the automatic setting of the DVD playback option by setting the values of the SPRM and GPRM registers 108, which store information on the number of audio and subpicture streams to be played back, to the appropriate values. May be step 405. As a result, in step 405, the environment number of the DVD playback system is appropriately set by recording the stream number having the language code corresponding to the option value read from the memory into the SPRM and GPRM registers 108.

In this way, you can identify and save language options for audio and subpictures that you frequently select, and then automatically play back audio / subpicture languages and other playback options when you want to play another DVD title. By setting the, you can save the user from having to manually set playback options every time a DVD title is played. In other words, when a user wants to watch a DVD title, inserting the disc into the DVD playback system immediately plays the DVD title in the user's preferred playback environment without the user having to manually set audio and subpicture options by remote control operation. It is convenient for the user.

As described above, according to the apparatus and method for setting a playback option of a DVD according to the present invention, the user can grasp and store setting values for audio, subpicture, and other playback related options that are usually selected when a DVD title is normally played. After that, when the user wants to watch a new DVD title, the user can set the user's preferred playback-related option by the automatic method, thereby solving the inconvenience of the user manually setting the DVD-related option. In other words, when the user watches a DVD, the present invention provides a function of automatically setting playback-related options without a remote control operation, thereby improving the user's operability in the DVD playback system.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (6)

A DVD title in which presentation data to be reproduced and navigation data used for reproduction of the presentation data are recorded; A front end for optically reading the data recorded in the DVD title when playback of the DVD title is selected; A data processor for demodulating and error correcting the data read through the front end, separating the presentation data and the navigation data, and separating the presentation data into audio / video / subpicture data; An A / V / subpicture decoder for decoding the separated A / V / subpicture data, respectively; A navigation manager which receives the navigation data separated by the data processor and controls the A / V / subpicture decoder to perform a reproduction operation corresponding to a user's key input; And Whenever the user manually sets a playback option when playing a DVD title in conjunction with the navigation manager, the user obtains statistics on a playback option set by the user, and obtains and stores a user's preferred playback option based on the statistical information. And a playback option setting control section for automatically setting the user preferred playback option to the DVD title when playing another DVD title. The method of claim 1, wherein the playback option setting control unit Determining the stream number corresponding to the user's preferred playback option by using the disc information of the corresponding DVD title of the currently selected playback, and setting the playback option automatically by changing the GPRM and SPRM values. Device. The method of claim 1, wherein the navigation manager When the user sets the playback option of the DVD title through the remote control or the operation panel, it is output to the playback option setting control unit, And the play option setting control unit calculates statistics in the form of a histogram with respect to the play option setting values. In the playback option setting method for playback of a DVD title in which audio / video / subpicture data to be played back and navigation data used for playback are recorded, (a) confirming a playback option manually set by the user for the DVD title whose current playback is selected; (b) determining a user preferred playback option in a combination consisting of option values having the most frequency after updating the corresponding playback option histogram information according to the manually set playback option, and storing in the memory; And (c) automatically setting the stored user preference playback option to the DVD title when the user selects playback of a new DVD title. The method of claim 4, wherein step (b) A method of setting a play option of a DVD, characterized by determining his / her preferred play option by independently calculating histogram information on a specific play option according to a source language. The method of claim 5, wherein step (c) Reading navigation data from a DVD title of which playback is currently selected, and parsing a language code corresponding to the original language from the read navigation data; Reading user preferred playback options from the memory such as audio / subpicture language setting of the original language of the parsed DVD title in the above step; Retrieving a stream number corresponding to the user preferred audio / subpicture language code for the DVD title whose playback is currently selected; And changing the SPRM and GPRM values to the audio / subpicture stream numbers of the DVD titles retrieved in the above step.