CN1585028A - Data carrying controlling method in audio-visual broadcasting system and chip thereof - Google Patents
Data carrying controlling method in audio-visual broadcasting system and chip thereof Download PDFInfo
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Abstract
The method is a applied to play the audio video data on the memory media. The video autio media contains multiple video-audio segments and the navigating data of correspondence. Only the correspondin navigating data is to be loaded on the memory when playing the video audio segment to control the playing system to play that segment.
Description
Technical field
The present invention relates to a kind of is the Storage Media of representative and the control method that numerical information is written into thereof with the image and sound optical disk.
Background technology
In recent years, image and sound optical disk miscellaneous (as: CD, VCD, SVCD, DVD) has become the center of gravity place of home entertaining, wherein again with digital multi image and sound optical disk (digital versatile disc; DVD) the most popular, one of its chief reason, be the user can at random specify want the video content fragment appreciated, and Disc player just can find the storage location of this video content fragment on image and sound optical disk in a short period of time and play immediately, allows the user not need to waste many times and is looking for the own video and audio fragment that will appreciate.
Traditional digital multi image and sound optical disk player (DVD player) is when running, for the function of Play Control is provided, the user specified after the video content fragment wanting to appreciate, just need pairing all navigation datas of this video content fragment (navigation data) are written in the data-carrier store of Disc player, so that the index of correlation of seeking each video content fragment to be provided.Wherein navigation data has comprised complete video display management information (video manager information; VMGI), video display set of titles information (video title set information; VTSI), program chain information (program chaininformation; PGCI), Play Control information (playback control information; PCI) and data search information (data search infotmation; DSI).
In addition, at traditional digital multi image and sound optical disk player (DVD player) when playing different video and audio fragment continuously, need immediately/dynamically are written into all navigation datas of different video content fragments in the data-carrier store of Disc player in succession, use and playing efficiently outside the video content of showing, also the video content that will next will play to energy efficiency is written into, to reduce the probability that delay or freeze-frame etc. take place.
Yet the amount of capacity of different video and audio fragment is different and the distribution mode on Storage Media is also different, makes the storage space difference that the different navigation data are shared jointly.So this dynamic memory configurations mode, the size of the navigation data that will be written into is often different at every turn, usually unavoidablelyly or cause the fragmentation (fragmentation) of data memory space, or cause the vacant of data-carrier store, and make the service efficiency of data memory space reduce.
Summary of the invention
The invention provides the control method that the data in the video-audio playing system are written into, in order to play the video-audio data on the Storage Media.A plurality of navigation datas that video-audio data includes a plurality of video and audio fragment and corresponds respectively to these video and audio fragment.This method is included in when playing a video and audio fragment, and a part that only is written into the navigation data that corresponds to this video and audio fragment is used the broadcast of this video-audio playing system of control to this video and audio fragment to storer.
The chip that the present invention also provides a kind of data that are used for a video-audio playing system to be written into is in order to play the video-audio data on the Storage Media.A plurality of navigation datas that video-audio data includes a plurality of video and audio fragment and corresponds respectively to these video and audio fragment.This chip comprises a computing unit, a data-carrier store and a program storage: data-carrier store is the major part that is written in order to storage; Stored routine sign indicating number in the program storage makes this computing unit be able to only be written into the part with respect to a navigation data of this video and audio fragment when playing a video and audio fragment.
Content of the present invention, feature and advantage are only to have the part navigation data relevant with Play Control to be written into the data-carrier store of Disc player at least.Therefore can significantly reduce required data storage capacity, and can be because of not being written into mass data, so that the data-carrier store inadequate resource causes Disc player to work as machine.In addition, the present invention also can further utilize the data-carrier store surplus resources as memory cache (cache memory), promotes the efficient of the different navigation data of the different video and audio fragment of the data-handling efficiency of Disc player, particularly access.In addition, the present invention also can avoid storage space is carried out dynamic-configuration, thus can not cause the data memory space fragmentation, so that reduce the problem of storer utilization rate.Know this operator and can after reading instructions, more understand other benefit of applying for a patent invention or other content that are defined in the request item.
For above-mentioned and other content of the present invention, feature and advantage can be become apparent, cited below particularlyly go out preferred embodiment, and cooperate appended graphicly, be described in detail below.
Description of drawings
Fig. 1 is the data area structure synoptic diagram of digital multi image and sound optical disk.
Fig. 2 is the data structure synoptic diagram of the video display management information (VMGI) of digital multi image and sound optical disk data.
Fig. 3 is the data structure synoptic diagram of the video display set of titles information (VTSI) of digital multi image and sound optical disk data.
Fig. 4 is the data structure synoptic diagram of the program chain information (PGCI) of digital multi image and sound optical disk data.
The data structure synoptic diagram of the part video display management information that Fig. 5 downloads for one embodiment of the invention.
The data structure synoptic diagram of the part video display set of titles information that Fig. 6 downloads for one embodiment of the invention.
Fig. 7 a is the arrangement plan of memory subspace in one embodiment of the invention.
Fig. 7 b is a memory subspace arrangement plan in another embodiment of the present invention.
The chip calcspar that Fig. 8 plays for the selected data that is used for Storage Media according to the embodiment of the invention.
The reference numeral explanation:
100～data field; 110～computer data district; 120～video display data field; 121～control information; 122～video display object; 123～picture object; 124～audio frequency object; 126～navigation data; 127～video display management information; 128～video display set of titles information; 129～program chain information; 130～computer data district; 500～part video display management information; 501～video display management information management table; 503～title is searched the index form; 505～video display admin table single-unit order chain information unit form; 507～head of a family management information form; 600～part video display set of titles information; 601～video display set of titles information management form; 603～video display set of titles division header is searched the index form; 605～video display set of titles program chain information form; 607～video display set of titles list program chain information unit form; 710～memory subspace; 811～address space; 812～address space; 713～address space; 720～memory subspace; 725～partial memory space; 800～chip; 810～computing unit; 820～program storage; 830～data-carrier store; And 840～memory subspace.
Embodiment
Please refer to Fig. 1, one data field 100 is arranged on the one digital multi image and sound optical disk, there is stratum's structure this data field, and comprised most staggered first computer data districts (computer dataarea) 110, corresponding to 120, the 1 second computer data district 130, video-audio data district (audio/video dataarea) in the first computer data district 110 and corresponding to the second video-audio data district (audio/video data area) 140 in the second computer data district 130 or the like.
Following one deck in video-audio data district 120 has then disposed control information 121, video display object (videoobject) 122, picture object (picture object) 123 and audio frequency object (audioobject) 124; And in control information 121 and video display object 122, containing navigation data 126, how navigation data 126 major controls play video-audio data, comprise audio-visual video management information (videomanager information at least; VMGI) 127, video display set of titles information (video title setinformation; VTSI) 128, program chain information (program chain information; PGCI) 129, Play Control information (playback control information; PCI) and data search information (data search information; DSI).
Fig. 2～4 are respectively the data structure synoptic diagram of complete video display management information, video display set of titles information and program chain information.Complete video display management information has been described video display management information management table (video manager information management rable at least; VMGI_MAT), title is searched index form (tirle search pointer table; TT_SRPT), video display admin table single-unit order chain information unit form (video manager menu program chain information unit table; VGMG_PGCI_UT), head of a family's management information form (parental management informationtable; PTL_MAIT), video display set of titles property list (video title set attribute table; VTS_ATRT), lteral data keeper (text data manager; TXTDT_MG), the only first address form of video display admin table (video manager menu cell address table; VMGM_C_ADT) and video display management list video display object element address figure (video manager menu video objectunit address map; VMGM_VOBU_ADMAP), as shown in Figure 2, complete video display set of titles information has been described video display set of titles information management form (video title set informationmanagement table at least; VTSI_MAT), video display set of titles division header is searched index form (videotitle set part-of-title search pointer table; VTS_PTT_SRRT), video display set of titles program chain information form (video title set program chain information table; VTS_PGCIT), video display set of titles list program chain information unit form (video title set menuprogram chain information unit table; VTSM_PGCI_UT), video display set of titles time diagram form (video title set time map table; VTS_TMAPT), video display set of titles list video display object element address figure (video title set menu video object unit addressmap; VTSM_VOBU_ADMAP), video display set of titles element address form (video title set celladdress table; VTS_C_ADT) and video display set of titles video display object element address figure (videotitle set video object unit address map; VTS_VOBU_ADMAP), as shown in Figure 3, complete program chain information has then comprised program chain general information (program chaingeneral information at least; PGC_GI), program chain command table (program chain commandtable; PGC_CMDT), program chain program figure (program chain program map; PGC_PGMAP), unit broadcast information form (cell playback information table; C_PBIT) and unit location information form (cell position information table; C_POSIT), as shown in Figure 4.
Because in the navigation data, be not that all information is all relevant with the function of Play Control, and the part navigation information relevant with the Play Control function is that certain specification and size (specification that depends on the File Format of the specification of Storage Media and storage data basically) are arranged.Therefore, a preferred embodiment of the present invention provides the method that data that are used for a video-audio playing system are written into, in order to play the video-audio data on the Storage Media.Wherein, video-audio data a plurality of navigation datas (for example location index of multi-medium file on Storage Media and the directory information of multi-medium file) of including a plurality of video and audio fragment (for example multi-medium file) and corresponding respectively to these video and audio fragment.This method is when playing certain video and audio fragment, only is written in a part to a storer in the navigation data that corresponds to this video and audio fragment, uses the broadcast of this video and audio fragment of control.For example, can only be written into video display management information, video display set of titles information and the program chain information of part, the navigation data of remainder is not written into.Again for example, the part navigation data that is written into is the storage location of video and audio fragment on this Storage Media that is enough to point out with choosing, makes Disc player can play-over this video and audio fragment.
For example, loaded part video display management information 500 may only comprise video display management information management table (VMGI_MAT) 501, title is searched index form (TT_SRPT) 503, video display admin table single-unit order chain information unit form (VGMG_PGCI_UT) 505 and head of a family's management information form (PTL_MAIT) 507, as shown in Figure 5; And loaded part video display set of titles information 600 only comprises video display set of titles information management form (VTSI_MAT) 601, video display set of titles division header is searched index form (VTS_PTT_SRPT) 603, video display set of titles program chain information form (VTS_PGCIT) 605 and video display set of titles list program chain information unit form (VTSM_PGCI_UT) 607, as shown in Figure 6, loaded program chain information then comprises program chain general information (PGC_GI), program chain command table (PGC_CMDT), program chain program figure (PGC_PGMAP), unit broadcast information form (C_PBIT) and unit location information form (C_POSIT).Certainly, the foregoing part navigation data that is written into is only for giving an example, the personage who has the knack of this skill can know how to increase and decrease the major part navigation data of being downloaded by inference, and under the prerequisite that another part navigation data is not downloaded, make to be written into the part navigation data and to be enough to point out picture, the storage location of video and audio fragment on this Storage Media, and make Disc player can play-over this video and audio fragment with choosing.Owing to only have and be written into the storer of Disc player with the relevant part navigation data of Play Control (play control), therefore can significantly reduce required memory span, and can not cause the memory resource deficiency because of being written into multidata, and cause Disc player to work as machine.
In addition, according to aforesaid preferred embodiment, can be the more maximum required memory capacity of each form during the specification of the Storage Media of handling (for example according to) calculates in the part navigation data that may be downloaded further in advance, and in data-carrier store, delimit a fixing memory subspace according to the totalling of the required maximum storage capacity of each form, be used for depositing the part navigation data that is written into specially.Shown in Fig. 7 a, in fixing memory subspace 710, can further be used for storing the address space of each form according to the required maximum memory allocation of space of each information form; For example, if need be written into form 1, form 2 ... form n etc. are n form altogether, then divide an address space 711 according to form 1 required max cap., divide an address space 712 according to form 2 required max capies, the rest may be inferred to divide an address space 713... according to form 3 required max capies; When being written into the navigation data of this Storage Media, each form can be deposited in address space separately in the memory subspace.Thus, the stored reference position of each form is all fixed, rather than dynamically in storer, distributed, can avoid the problem of global storage space fragmentation, the problem of avoiding the storer utilization rate to reduce because of the fragmentation of dynamic-configuration.
In addition, according to aforesaid preferred embodiment, can be more further in advance the specification of the Storage Media of handling (for example according to) calculate the required maximum storage capacity of each form in the part navigation data that may be downloaded, and in storer, delimit a fixing memory subspace according to the totalling of the required maximum storage capacity of each form, be used for depositing the part navigation data that is written into specially.Shown in Fig. 7 b, in fixing memory subspace 720, each form that directly will be written into successively deposits memory subspace in.For example, if need be written into form 1, form 2 ... form n etc. are n form altogether, then direct in regular turn with the form 1 that is written into, form 2 ... form n successively deposits in the memory subspace 720; Because the capacity of the memory subspace 720 of being delimited is that therefore can stay a part of storage space 725 usually is not written into data for the required maximum storage capacity of each form adds up.At this moment, this this partial memory space 725 can be used as memory cache (cache memory), be used for inserting the correlation navigation data of adjacent video content fragment, till whole memory subspace 720 is filled, so, if handle after the present paragraph, just in time to handle the video content of adjacent segment exactly, then can directly in memory subspace 720, read the correlation navigation data, and do not need to be written into corresponding navigation data from image and sound optical disk again, and then promote the data-handling efficiency of Disc player.
Please refer to Fig. 8, the chip 800 that another embodiment of the present invention provides a selected data that is used for Storage Media to play, in order to play on the image and sound optical disk with picture, the video and audio fragment of choosing, this chip 800 comprises a computing unit 810, a program storage 820, and a data-carrier store 830.This data-carrier store 830 is the part navigation datas that are written in order to storage; Stored routine sign indicating number in this program storage 820 is able to when playing a video and audio fragment this computing unit 810, only is written into a part with respect to a navigation data of this video and audio fragment to this data-carrier store, uses the broadcast of this video and audio fragment of control.
According to aforesaid embodiment 2, the required maximum storage capacity of interior each form of part navigation data that this procedure code also can further make computing unit 810 calculate to handle the institute of Storage Media the to download specification of Storage Media (for example according to), and in data-carrier store 830, delimit a fixing memory subspace 840 according to the totalling of the required maximum storage capacity of each form, be used for depositing the part navigation data that is written into specially.Certainly, in fixing memory subspace 840, the address space that can further will store according to required each form of maximum memory allocation of space of each information form, when being written into the navigation data of this Storage Media, each form can be deposited in address space separately in the storer, thus, the stored reference position of each form is all fixed, just can not cause the fragmentation in global storage space, so that reduce the problem of storer utilization rate because of the dynamic-configuration storage space yet.
In addition, according to aforesaid preferred embodiment 2, the interior required maximum storage capacity of each form of part navigation data that this procedure code also can further make computing unit 810 calculate to handle the institute of Storage Media to download, and in data-carrier store 830, delimit a fixing memory subspace 840 according to the totalling of the required maximum storage capacity of each form, be used for depositing the part navigation data that is written into specially.In fixing memory subspace 840, each form that directly will be written into successively deposits memory subspace 840 in.Because the capacity of the memory subspace 840 of being delimited is the totalling for the required maximum storage capacity of each form; therefore can stay a part of storage space usually is not written into data; this partial memory space can be used to insert the correlation navigation data of adjacent video content fragment; till whole memory subspace is filled; so; if handle after the present paragraph; just in time to handle adjacent paragraph exactly; then can directly in memory subspace, read related data; and do not need to be written into data from image and sound optical disk again, and then promote the data-handling efficiency of Disc player.
Combine and see it, traditional Disc player is carrying out a certain video content fragment when playing, all navigation datas that can directly this video content fragment be corresponded to all are stored in the data-carrier store of Disc player, therefore have two to treat improvements: one is that the desired data memory span is huge, easily cause CD to broadcast device when running, because of the memory resource deficiency, and machine takes place to work as; Another then is the different required memory span difference of video content fragment, therefore needs the dynamic configuration data storage space to give navigation data, and causes the fragmentation of data memory space.Yet in the stocking system provided by the present invention in selected data player method and the chip, only there be the part navigation data relevant to be written into the data-carrier store of Disc player with Play Control, therefore can significantly reduce required data storage capacity, and can be because of being written into multidata, so that data-carrier store inadequate resource, cause Disc player to work as machine, even also can further utilize the data-carrier store surplus resources, promote the data-handling efficiency of Disc player as memory cache; In addition, the present invention also can avoid storage space is carried out dynamic-configuration, thus can not cause the data memory space fragmentation, so that reduce the problem of storer utilization rate.
Certainly, The present invention be directed to the improvement of broadcast how to control video and audio fragment, rather than the coding/decoding/correction of the content of video and audio fragment or the like.Therefore, the present invention only improves at the access of navigation data; As for the part of video and audio fragment, in the time will playing, to how to be written into to carry out coding/decoding/correction or the like, can be identical with known technology, also can be suitable for any new practice.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim person of defining.
Claims (12)
1. control method that the data that are used for a video-audio playing system are written into, in order to playing the video-audio data on the Storage Media, a plurality of navigation datas that this video-audio data includes a plurality of video and audio fragment and corresponds respectively to these video and audio fragment, this method comprises:
In the time that a certain video and audio fragment will be play, only be written into the part of a corresponding navigation data.
2. control method as claimed in claim 1, this control method be selected from following one of them:
I. only be written into a part of video display management information in this navigation data, a part of video display set of titles information and a program chain information at this;
Ii. only be written in this navigation data at this, in order to point out the part of the storage location of corresponding this video and audio fragment on this Storage Media;
Iii. be written in this navigation data, use so that the corresponding player of this Storage Media can be play-overed the part of this video and audio fragment;
Iv. only there is this navigation data of the part relevant to be written into Play Control.
3. control method as claimed in claim 1, when arbitrary this navigation data has comprised a plurality of information forms, this control method more comprises:
When calculating corresponds to these navigation datas, enough deposit the maximum memory capacity of arbitrary this navigation data of part that is written into;
In this storer,, delimit a memory subspace according to this maximum memory capacity;
With this memory subspace, be divided into a plurality of address spaces; And
When being written into this navigation data of arbitrary part, deposit a plurality of information forms of each this navigation data of part in these address spaces respectively.
4. control method as claimed in claim 3, when being written into this navigation data of different parts, the distribution of those address spaces in this memory subspace can not change.
5. control method as claimed in claim 1, when this navigation data has comprised a plurality of information forms, this control method more comprises:
Calculating is enough deposited the maximum memory capacity of arbitrary this navigation data of part during corresponding to these navigation datas;
In this storer,, delimit a memory subspace according to this maximum memory capacity; And
When being written into this navigation data of arbitrary part, with the part this navigation data a plurality of information forms successively deposit this memory subspace in.
6. control method as claimed in claim 1 more comprises:
When playing this video and audio fragment, be written into respect to the part in one second navigation data of one second video and audio fragment to this storer, the broadcast of this second video and audio fragment is to be connected in after this video and audio fragment.
7. chip that the data that are used for a video-audio playing system are written into, in order to playing the video-audio data on the Storage Media, a plurality of navigation datas that this video-audio data includes a plurality of video and audio fragment and corresponds to these video and audio fragment respectively, this chip comprises:
One computing unit;
One data-carrier store is the major part that is written in order to storage; And
One program storage, central storage one procedure code makes this computing unit be able to only be written into the part of a navigation data that corresponds to this video and audio fragment when playing a video and audio fragment.
8. chip as claimed in claim 7, this chip comprise following may the variation at least:
I. this procedure code is to make only to be written into the audio-visual management information of a part in this navigation data, a part of audio-visual set of titles information and a program chain information;
Ii. this procedure code is to make only to be written in this navigation data, in order to point out the part of the storage location of corresponding this video and audio fragment on this Storage Media;
Iii. this procedure code can be used so that the corresponding player of this Storage Media can be play-overed the part of this video and audio fragment so that be written in this navigation data;
Iv. this procedure code is to make only to have this navigation data of the part relevant with Play Control to be written into.
9. chip as claimed in claim 7, wherein, this procedure code also can make this computing unit carry out the following step:
When calculating corresponds to these navigation datas, enough deposit the maximum memory capacity of arbitrary this navigation data of part that is written into;
In this data-carrier store,, delimit a memory subspace according to this maximum memory capacity;
With this memory subspace, be divided into a plurality of address spaces; And when being written into this navigation data of arbitrary part, deposit a plurality of information forms of this this navigation data of part in these address spaces respectively.
10. chip as claimed in claim 7, when being written into this navigation data of different parts, the distribution of those address spaces in this memory subspace can not change.
11. chip as claimed in claim 7, wherein, when this navigation data had comprised a plurality of information form, this procedure code also can make computing unit carry out the following step:
Calculating enough deposits the maximum memory capacity of arbitrary this navigation data of part in corresponding to these navigation datas;
In this storer,, delimit a memory subspace according to this maximum memory capacity; And
When being written into this navigation data of arbitrary part, with the part this navigation data a plurality of information forms successively deposit this memory subspace in.
12. chip as claimed in claim 7, this procedure code more comprises following function:
When playing this video and audio fragment, be written into respect to the part in another navigation data of another video and audio fragment to this data-carrier store, the broadcast of this another video and audio fragment is to be connected in after this video and audio fragment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100478397A CN100376005C (en) | 2004-05-31 | 2004-05-31 | Data carrying controlling method in audio-visual broadcasting system and chip thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100478397A CN100376005C (en) | 2004-05-31 | 2004-05-31 | Data carrying controlling method in audio-visual broadcasting system and chip thereof |
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| CN1585028A true CN1585028A (en) | 2005-02-23 |
| CN100376005C CN100376005C (en) | 2008-03-19 |
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| KR100306195B1 (en) * | 1998-08-18 | 2001-11-30 | 구자홍 | How to manage navigation data on rewritable recording media |
| KR100521916B1 (en) * | 2002-08-21 | 2005-10-13 | 엘지전자 주식회사 | Method for transmitting dummy sync and audio signal in optical disc player |
| EP1547076A4 (en) * | 2002-09-07 | 2009-09-23 | Lg Electronics Inc | Recording medium having data structure for managing reproduction of still images from a clip file recorded thereon and recording and reproducing methods and apparatuses |
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