CN1981281A - Apparatus, system, and method for filtering objectionable portions of a multimedia presentation - Google Patents

Abstract

A method for filtering portions of a multimedia presentation. A stream of multimedia media data read from a memory media is compared with a filter file associated with the multimedia data. The filter file includes a start position, a stop position, and a filtering action to perform on the portion of the multimedia content that begins at the start position and ends at the stop position. When the multimedia data read from the media corresponds with the filter file, the designated filtering action is performed. Aspects of the invention also pertain to the format for the filter file, format for accessing filter files on a memory media.

Description

The device, the system and method that are used for the bad part of filtering multimedia demonstration

The cross reference of related application

The application is Patent Cooperation Treaty (PCT) application, require to be called the right of priority of the 60/561st, No. 851 provisional application of the U.S. of " device, the system and method (Apparatus; System; and Method for Filtering Objectionable Portions of an Audio VisualPresentation) that are used for filtering the bad part of audio frequency and video demonstration " in the name that on April 12nd, 2004 submitted to.The present invention also requires to be called in the name that on October 23rd, 2000 submitted to the U.S. the 09/694th of " content of multimedia browses and playback (MultimediaContent Navigation and Playback) ", the preferential of No. 873 patented claims is for the time being its part expansion, also require to be called the U.S. the 09/695th of " browsing data that is used for the playback audio-video frequency content transmits (Delivery of Navigation Data forPlayback of Audio and Video Content) " simultaneously in the name that on October 23rd, 2000 submitted to, the preferential of No. 102 patented claims is for the time being its part expansion, and the disclosure with each part priority application listed above is incorporated herein by reference hereby.

Invention field

Content of the present invention relates to about the system of filtration fraction multimedia presentation, method, device and file layout.

Background

Usually, film and other multimedia presentation include and are not suitable for some age bracket spectators's scene or language.In order to help the user to judge whether certain film is fit to specify the spectators of age bracket, and Motion Picture Association of America (" MPAA ") has formulated current familiar NC-17/R/PG-13/PG/G rating system.Other is organized and has also formulated similar rating system to be suitable for the content of multimedia of other type, as TV programme, computer software, video-game and music.

The quantity of potential harmful content and background all are the key factors of specifying the multimedia presentation grade.Yet, be used for teen-age grade type according to recommending, may have only the adult theme of quite few focusing to be removed content of multimedia fully.For example, in the scene of film, the scene of single violence clearly, property or language may need it is decided to be " R " level, and other part may be " PG " or " PG13 " film.Therefore, although " R " G-film G has public's appeal, the teenager who attempts to avoid the individual of " R " level content and be subject to " R " level may select not watch such film, if not comprise described clear scene, not so they still thirst for watching such film.

Many users may select the multimedia presentation of another kind of version, for example through revising so that its content is more suitable for the version of all age brackets.For the media work of revision is provided, prior art concentrates on controls multimedia sources.The details of content of multimedia is made amendment from depending on the type of access originator medium carrier to a great extent.For the linear access medium, for example video-tape or audiotape, the undesired content of montage is spliced into one with rest parts from tape.For the undesirable content of each part that multimedia sources comprised, repeat this processing process.Because it is unpractical needing specific purpose tool and professional experiences, unique user to carry out this class montage.When the third party can representative of consumer carries out this montage when revising content, because each independent tape is all needed practical operation and repeats montage, this processing procedure efficient is very low.

The direct access medium of modification such as DVD equally also concentrates on revises multimedia sources.Be different from linear medium, the direct access medium allows the time of the arbitrary portion of visit content of multimedia, and is roughly the same with the time of other arbitrary portion of visiting content of multimedia.The direct access medium allows the generation and the transmission of the content of multimedia of a plurality of versions, comprises the version that can be suitable for most of age brackets, and allows these versions of storage on single medium.By identification many available segment of storing from content source, selection, retrieval and the segmentation of transmission content, decode procedure generates various continuous media streams.

In order to help to illustrate on single source the prior art of the media work that generates a plurality of versions, the senior description of the primary element that occurs in the system that is used for demonstrating content of multimedia may be useful.Usually, this system comprises multimedia sources, demoder and output unit.Demoder is to be used to store or send the form of content of multimedia and to be used for intermediate treatment and final converter between the form of demonstration content of multimedia on the output unit.For example, content of multimedia can be encrypted to prevent piracy, can compress to save storage space or bandwidth.Before demonstration, content of multimedia must be deciphered and/or decompress, and operation is usually carried out by demoder.

Prior art has been lectured by content of multimedia being broken into various segmentations and being included in and has been fit to the standby exchange segmentation of part, generates and be sent in the direct access media work of a plurality of versions on the single storage medium.The segmentation of each independent access will be carried out classification and sign according to the content that it comprised, and consider such as factors such as theme, background and readabilitys.Generate one or more segmented indexes to be used to demonstrate the content of multimedia of each many version.For example, index can be with reference to the segmentation of the content of multimedia that is identified as " PG " version, and another index can be with reference to the segmentation that is identified as " R " release content.In addition, these segmentations itself or single index can comprise the grade of comparing with user-selected grade.

In the prior art index is carried out in the exchange segmentation and have many benefits with the media work that offers a plurality of versions on the single storage medium.Since a plurality of versions shared segmentation only need be stored once, so the use of storage space is optimized.The user can be awarded himself option to concrete theme degrees of tolerance is set, and different multimedia versions can comprise the alternative segmentation of different readabilitys.When using, on content source, include segmented index and can make selected segmentation seamless playback (that is not interval and pause) together with impact damper.Seamless playback is by providing the segmented index on the content source to realize, therefore before data enter impact damper, managing the selection and the ordering of exchanging segmentation.

The time-delay of being experienced when the use of impact damper can compensate the different physical region that reads the direct access medium.When reading mechanism when the position of a dish moves to another, from the direct access medium, do not read institute's request content.Usually, this problem is because the playback rate of content of multimedia substantially exceeds access rate.For example, the normal playback speed of content of multimedia is per second 30 frames.Therefore, when reading mechanism moves to another starting point, random access must be less than a thirtieth second (being approximately 33 milliseconds) or random access will cause the pause in the replayed section.Yet the average access rate of 16 times of fast DVD is approximately 95 milliseconds in the personal computer, is almost 3 times of 33 milliseconds of allowing seamless playback.And, according to the standard of NTSC (" NTSC "), only allow 5 to 6 milliseconds between first pixel of painted next frame in last pixel of a painted frame.Skilled person in this area will be appreciated that, above calculating be the example that from the direct access medium, reads the related time-constrain of content of multimedia that is used for exporting to PC or TV, after content of multimedia is read, even without the time of distributing decoding multimedia content, also need this time is added into the access time with more accurate Calculation time-delay.

Access Once you begin, DVD drives and can read content of multimedia from DVD with the speed that surpasses playback rate.In order to solve the access time-delay, the DVD standard has been lectured content of multimedia has been read in track buffer.The specification of described track buffer and the capacity that must read in the content of multimedia of this track buffer are determined by Several Factors, comprise above-mentioned factor, access time for example, decode time, playback rate etc.When being stored in DVD, lecture as prior art, corresponding to the segmented index of navigation commands to content segmentation discern and sort so that it is read in track buffer, thereby make that the content of multimedia of a plurality of versions can seamless playback.Yet, because outside index can influence the position code that just obtains when decode procedure finishes, so in initial segmentation identification/selection/retrieving, the segmented index of content source outside can not be controlled navigation commands fully.Therefore, as lecturing in the prior art, outside segmented index possibly can't use the DVD track buffer to solve the access time-delay.

As another kind buffering scheme, be staggeredly placed from the segmentation of the content of multimedia of version separately.By reading, abandon or skip undesired segmentation, allow like this and in fact sequentially read medium.Yet, skip quite little the moving of expression reading mechanism.Usually, moving that little mobile related time ratio is big is more of short duration, therefore only brings minimum time-delay.

And, comprise that the prior art of the media work of a plurality of versions on the single direct access medium is subjected to actual restriction, hinder it and be widely used.A subject matter is that the content maker must generate the also media work of a plurality of versions of widespread distribution voluntarily, and pay extra making and work and organize and mark these and include the content segmentation of exchanging segmentation, so that use with segmented index or reflection.Works determined in these index that combine with corresponding segment, and all directly be stored in the medium of source when medium produces.In brief, when prior art provided the instrument of the media work of creating a plurality of versions, this instrument itself was useless for the user.

Another problem of the prior art is for the segmented index on the integrated direct access storage device, and existing coding techniques must obtain permission; Come seamless playback to be stored in the demoder of the multimedia version on the direct access medium in order to generate the segmented index that utilizes media work, decoding technique must obtain special permission.With regard to DVD, Motion Picture Experts Group (" MPEG ") management is used for the compress technique to the multimedia file Code And Decode.And because the content of multimedia maker wants to prevent the unwarranted copy of its media work usually, they have also adopted the Copy Protection technology.The most frequently used dvd media Copy Protection technology is by DVD copy control association (" DVDCCA ") domination, the permission of their domination Content Scrambling System technology (" CSS ").How to use under the very strict agreement of this technology the permission of MPEG that the developer of demoder just is correlated with and CSS technology in regulation.In brief; having the special-purpose compression of compression and Copy Protection technology or the exploitation time relevant with the Copy Protection technology now with special permission may be very huge with cost; suppressed being extensive use of of segmented index technology in the prior art, this segmented index is used to be provided at the media work of a plurality of versions on the single direct access storage device.

In addition, the knowledge of prior art does not provide scheme, is used to filter those no matter whether modes of its content demonstration are more suitable for being replicated and the content of multimedia of the direct access distributed in most of age bracket spectators.When submitting present patent application to, surpass 40,000 multimedia captions and issued in DVD, do not utilize many versions technology of the prior art so that the user can watch and listen to the content of standby version in more suitable most of age bracket spectators' mode.

Prior art has been lectured in decode procedure, by the closed caption information of checking audio stream and the volume that weakens segmentation stream, this segmentation stream includes and the one group of vocabulary that predetermined vocabulary is consistent that is considered to be not suitable for most of age bracket spectators, can discern the audio-frequency unit with filtering multimedia.This technology is restricted in application, because it can't discern and filter video segmentation, and it can only work to the audio stream that includes closed caption information.And, owing to be difficult to synchronously between closed caption information and its corresponding audio content, be inaccurate so filter based on the audio content of closed caption information.

Summary of the invention

Content of the present invention relates to the method for filtration fraction content of multimedia demonstration, and described method comprises that at least one definition of access has the kill file that filters starting point indication and filter operation; Read digital medium information from storage medium, this multimedia messages comprises position reference; The position reference of many media informations and the indication of filtration starting point; But and if the filtration starting point of at least one filtration fraction of the position reference of multimedia messages and content of multimedia indication be complementary, respond compare operation so, carry out filter operation.

Brief Description Of Drawings

In order to describe this method that can obtain above-mentioned and other advantage of the present invention and feature,, will provide the present invention more more detailed to describe than top concise and to the point description with reference to the specific embodiment that illustrates in the accompanying drawings.Be to be understood that these diagrams are just described exemplary embodiments of the present invention, therefore can not think restriction, will describe and illustrate additional feature of the present invention and details by using accompanying drawing to its scope.

Fig. 1 illustrates the canonical system that suitable running environment of the present invention is provided;

Fig. 2 is the high level block diagram that expression embodies the primary element of system of the present invention;

Fig. 3 A, 3B and 3C provide the block diagram of three more detailed systems of primary element shown in Figure 2;

Fig. 4 A, 5A and 7 describe according to the process flow diagram that is used for the typical method of filtering multimedia content of the present invention;

Fig. 4 B and 5B illustrate mock-up position code with content of multimedia relevant browse object;

Fig. 6 is a process flow diagram of describing the method that is used for the customizing multimedia information filtering;

Fig. 8 A and 8B are the process flow diagrams that illustrates in accordance with the method for content of the present invention;

Fig. 9 is an exemplary block diagram of abideing by the menu layout of content of the present invention;

Figure 10 A-10C is the exemplary block diagram that illustrates in accordance with the filtration treatment operation of content of the present invention;

Figure 11 is an exemplary block diagram of abideing by the menu layout of content of the present invention;

Figure 12 is the synoptic diagram that illustrates in accordance with the type of the skipping filter operation content of content of the present invention;

Figure 13 is the file layout figure that skips the type filter operation;

Figure 14 is the synoptic diagram that illustrates in accordance with the mute type filter operation content of content of the present invention;

Figure 15 is the file layout figure that skips the type filter operation; And

Figure 16-the 23rd abides by the file layout that is used for index of content of the present invention and the filter table of recognition data bag.

Specific embodiment

The invention provides the method, system and the computer program that in decode procedure, are used for identification automatically and filtration fraction content of multimedia.Embodiments of the invention may comprise special use or multi-purpose computer, television system, audio system and/or the above-mentioned combination with various computer hardwares.These embodiment will more detailed below discussion.Yet with regard to all situations, described embodiment should be considered as typical case of the present invention, rather than limits its scope.

Embodiment within the scope of the present invention also comprises being used to load or having the computer executable instructions that is stored thereon or a computer-readable medium of data structure.Such computer-readable medium can be can be by any usable medium of universal or special computer access.For example, rather than restriction, this computer-readable medium can comprise RAM, ROM, EEPROM, DVD, CD-ROM or other optical disc storage, disk storage or other magnetic storage device, perhaps can be used for loading or store shape such as computer executable instructions or data structure required program code means and can be by any other medium of universal or special computer access.When on network or arrive and to transmit in other communication link of computing machine or the connection (hard-wired, wireless, or hardwired or wireless combination) or when information was provided, computing machine was considered as computer-readable medium with this connection fully.Therefore, any this connection suitably is called computer-readable medium.Above-mentioned combination equally also is included in the scope of computer-readable medium.For example, computer executable instructions comprises the instruction and data that can impel multi-purpose computer, special purpose computer or dedicated treatment facility to carry out certain function or certain group function.

Fig. 1 and the discussion of following are can carry out suitable computing environment of the present invention in order to summarize.Although and do not require that the present invention will be described, for example program module under the general occasion of the computer executable instructions of being carried out by the computing machine of network environment.Usually, program module comprises routine, program, object, element and the data structure etc. of carrying out particular task or realizing particular abstract.Computer executable instructions, associated data structures and program module represent to be used to carry out the example of the program code means of method step disclosed herein.Like this certain order of executable instruction or associated data structures, expression are used to be implemented in the example of the respective action of function described in the step like this.And the program code means of being carried out by processing unit provides a kind of example of processor technical scheme.

Those skilled in the art are to be understood that, the present invention can carry out in the network computing environment of the Computer Systems Organization with many types, comprises personal computer machine, handheld apparatus, multicomputer system, based on microprocessor or programmable consumption electronic product, NetPC Network PC, handle PC, mainframe computer and analog.The present invention equally also can carry out in distributed computing environment, and wherein task is carried out by the local and remote treating apparatus that connects (connecting wireless connections, or the combination by hard wire or wireless connections by hard wire) through communication network.In distributed computing environment, program module can be positioned at local and remote memory body memory storage.

With reference to Fig. 1, be used to realize that canonical system of the present invention comprises the general-purpose computations device of shape such as traditional computer 20, this general-purpose computations device comprises processor 21, Installed System Memory 22, and will comprise that the various system elements of Installed System Memory 22 are connected to the system bus 23 of processor 21.This system bus 23 can be this several bus-structured any, comprise memory bus or Memory Controller, peripheral bus, and the local bus that uses any bus architecture.This Installed System Memory comprises ROM (read-only memory) (ROM) 24 and random-access memory (ram) 25.Basic input/output (BIOS) 26 includes between the element of help in computing machine 20 routine of the information of transmission, and for example start-up course can be stored among the ROM 24.

Computing machine 20 can also comprise the magnetic hard drive 27 that is used to read and write magnetic hard-disk 39, be used to read or write the disc driver 28 of moveable magnetic disc 29, and be used to read or write CD drive 30 such as the removable CD 31 of CD-ROM or other optical medium.Magnetic hard drive 27, disc driver 28, and CD drive 30 is respectively by hard disk drive interface 32, magnetic disk drive interface 33, and disc drives interface 34 is connected to system bus 23.These drivers and their associated computer-readable media provide computer executable instructions, data structure, and program module and other are used for the non-volatile memories of the data of computing machine 20.Though typical environment described herein has been used magnetic hard-disk 39, moveable magnetic disc 29, and removable CD 31, but also can use other type be used to store data computing machine computer-readable recording medium, comprise tape, flash card, digital video disk, Bernoulli Jacob's disk, RAMs, ROMs, and analog.

The program code means that includes one or more program modules can be stored in hard disk 39, disk 29, and CD 31, ROM 24 or RAM 25 comprise operating system 35, one or more application programs 36, other program module 37, and routine data 38.The user can pass through keyboard 40, sensing equipment 42 or other input equipment (not shown), and for example microphone, operating rod, game paddle, satellite antenna, scanner or analog are to computing machine 20 input commands and information.These and other input media usually is that the serial interface 46 by connected system bus 23 links to each other with processor 21.Selectively, these input medias can connect by other interface, parallel port for example, game port, or USB (universal serial bus) (USB).Monitor 47 or other display device also are connected to system bus 23 via the interface such as video adapter 48.Except monitor, personal computer generally includes other peripheral output devices (not shown), for example loudspeaker and printer.

Computing machine 20 can utilize to be connected with the logic of one or more remote computers in network environment and move, for example remote computer 49a and 49b.Remote computer 49a and 49b can each other personal computer, server, router, NetPC Network PC, end-to-end equipment or other common network node naturally; although have only memory body memory storage 50a and 50b; and the application program 36a relevant with them and 36b be illustrated explanation in Fig. 1, but also comprise the many of relevant calculation machine 20 described above or all elements usually.The logic described among Fig. 1 connects and comprises LAN (LAN) 51 and Wide Area Network (WAN) 52, provided herein just for example rather than restriction.This network environment also is common in office or enterprise computer network, in-house network and internet.

When using in the lan network environment, computing machine 20 is connected to local network 51 by network interface or adapter 53.When using in the WAN network environment, computing machine 20 can comprise modulator-demodular unit 54, Radio Link, or be used to set up other device of communicating by letter such as on the wide area network 52 of internet.Modulator-demodular unit 54, it can be built-in or external, is connected to system bus 23 by serial interface 46.In network environment, the described program module that relates to computing machine 20 or its part can be stored in long-range memory body memory storage.Will be appreciated that it all is representative instance that shown network connects, also can use other device of setting up wide area network 52 communications.

Turn over downwards to Fig. 2, be depicted as the high level block diagram of the primary element of discerning the system that is used for the filtering multimedia content.These primary elements comprise content source 230, demoder 250, browser 210 and output unit 270.Content source 230 with multimedia provide to demoder 250 with decoding, browser 210 control demoders 250 be so that filtering content can't arrive output unit 270, its content of multimedia that is received of output unit 270 playback.When this application is used, term " multimedia " should broadly be interpreted as comprising audio content, video content, or the both has.

The present invention does not need special content source 230.Can provide the data source of content of multimedia arbitrarily, DVD for example, CD, storer, hard disk, removable dish, tape reel the and in fact magnetic or the optical medium of all other types can be as content source 230.Those skilled in the art will be appreciated that top medium comprises read-only, the kind of read/write and write-once, and no matter it is to store with simulation or with the form of numeral.All necessary hardware and the software that are used for these media types of access all are the parts of content source 230.Content source 230 provides a kind of example of multimedia sources device as described above.

Multimedia sources 230 provides encoded content usually.Those are generally used for difference between the form of the intermediate treatment storing or send the form of content of multimedia and be used for content of multimedia coded representation.The conversion that demoder 250 carries out between storage format and the intermediate form.For example, the MPEG content of storage is compressed and encrypts.Before the output unit place play, the MPEG content of 250 pairs of storages of demoder was decrypted and decompresses.Demoder 250 can comprise hardware, software, or the combination of some hardware and software.Because play multimedia content relates to lot of data, demoder 250 usually has some mechanisms that are used for data directly are sent to output unit 270.Demoder 250 is exemplary embodiments of decoder device.

Output unit 270 is provided for a kind of example of the output unit of play multimedia content, will be understood that it comprise can play multimedia content so that this content can descried any device.For computer system, as the computer system that reference Fig. 1 describes, output unit 270 can comprise video card, video display, sound card, and loudspeaker.Replacedly, output unit 270 can be TV or audio system.Television system and audio system comprise many equipment.Simple audio system may comprise an amplifier and a plurality of loudspeaker at least.Similarly, simple television system may be for comprising the traditional tv of one or more loudspeakers and a TV screen.More senior TV and audio system may comprise the Voice ﹠ Video receiver, and it carries out more complicated processing to improve the quality of sound and image to audio frequency and audio content.

Output unit 270 may comprise the combination of computing machine, TV and audio system.For example, home theater is the combination of audio frequency and television system.These systems generally include a plurality of content source, for example are used for video-tape, audiotape, DVD, CD, wired element that is connected with satellite etc.Audio frequency and/or television system also can combine with computer system.Therefore, output unit 270 should be interpreted as comprising aforesaid isolated operation or audio frequency, TV and the computer system moved with array mode.And, when in this application, using, computer system (no matter be used for the user or as server), television system and audio system may designation system performance rather than its basic or common purposes.These performances also needn't be repelled mutually.For example, can think audio system fully, because it can use as audio system by the TV of its loudspeaker plays music.TV is not got rid of it as audio system as the part of television system usually.So, similar custom system, server system, the term of television system and audio system should give to explain the most widely to comprise can carry out any system that indicates performance.

Browser 210 is by judging whether need to filter software and/or the hardware of controlling demoder 250 through decoded content.Browser 210 is examples of multimedia browsing apparatus.Should emphasize, with content source 230, demoder 250, output unit 270 and browser 210 are drawn just in order to help its explanation separately.Some embodiment can be with content source 230, and demoder 250 and browser 210 are formed single set-top box, so that use with TV and/or audio system.Similarly, computer system can make up a part and the output unit 270 of demoder 250, and a part and the content source 230 of demoder 250 made up.Many other embodiments also are feasible, so the present invention and do not require that these four elements must separate existence.So, corresponding multimedia sources device, decoder device, output unit and multimedia browsing apparatus do not need separate existence equally, they can be combined to be fit to appointment embodiment of the present invention.Content source 230, demoder 250, output unit 270 and/or browser 210 also can distribute far each other and link together by communication link.

As top mentioned, Fig. 3 A, 3B and 3C provide the block diagram of three more detailed canonical systems of primary element shown in Figure 2.Yet the present invention is not restricted to any specific physical arrangement of element shown in Figure 2.Those skilled in the art will be appreciated that these primary elements can be used for many embodiment, comprise single physical device or several physical units.Therefore, Fig. 2 and all other figure should be regarded as according to a particular embodiment of the invention, rather than limitation of the scope of the invention.

Be similar to Fig. 2, Fig. 3 A comprises browser 310a, content source 330a, and AV decoder 350a, and output unit 370a are arranged in custom system 380a all.Content source 330a comprises DVD 332a and DVD driver 334a.Four-headed arrow between content source 330a and AV decoder 350a shows that content source 330a provides content of multimedia to AV decoder 350a, and when carrying out filter operation, AV decoder 350a sends order to content source 330a.

Browser 310a monitors demoder 350a by the time code of the decoded content of multimedia of continuous renewal.(time code is the examples of locations that is used to indicate the part content of multimedia.With regard to time code, according to begin from content the reproduction time of process locate.For other application, the location may relate to physical quantity, for example in video-tape or audiotape from a spool to another tape length that moves.The present invention must not ask the location of any specific type that is used to indicate the part content of multimedia.) in one embodiment, the renewal of time code occurred every 1/10th seconds, but the present invention does not require that any special renewal is at interval.(description of Fig. 4 B and Fig. 5 B is provided at and selects suitable some opinions that should consider related factors at interval in the process of upgrading.)

Communicate via the irrelevant interface 352a of manufacturer between browser 310a and the AV decoder 350a.The irrelevant interface 352a of manufacturer allows browser 310a to use the same commands that can be used for many different contents source.Microsoft ' s  DirectX  is one group of application programming interfaces, and it provides the irrelevant interface with manufacturer to the content source 330a in the computer system of the various microsoft operation systems of operation.AV decoder 350a receives order by the irrelevant interface 352a of manufacturer, and sends suitable order to concrete content source 330a.

AV decoder 350a provides audio content and video content to output unit 370a.Output unit 370a comprises graphics adapter 374a, video display 372a, audio frequency adapter 376a and loudspeaker 378a.Video display 372a can be can display of video content any device, no matter the video content of what form, it comprises calculator display organization, TV screen etc.

Usually, graphics adapter and audio frequency adapter provide some decoding technique so that the data volume that moves between content source 330a and the output unit 370a minimizes.Thereby graphics adapter and audio frequency adapter also provide additional processing that content of multimedia is transformed into the form that is more suitable for showing with voice reproducing from middle processing format.For example, many graphics adapter provide the video speed technology to strengthen display speed by the Processing tasks that unloads other system element.With regard to graphics adapter and audio frequency adapter, the actual switching between demoder 350a and the output unit 370a may some be blured.With regard to graphics adapter 374a and audio frequency adapter 376a execution decoding, the part of adapter suitably can be interpreted as the part of demoder 350a.

Browser 310a comprises browsing software 312a and object storage 316a.Four-headed arrow 314a represents the data stream between browsing software 312a and the object storage 316a.Object storage 316a comprises some object 320a that browse.In object storage 316a, to browse object and can be used as at the individual files of special content of multimedia and store, these files can be stored in one or more general data storehouse, or adopt some other data management system.The present invention does not apply restriction to how browsing object storage in object storage 316a.

Each is browsed object 320a and has stipulated that the filter operation (325a) to special system (329a) should appear in when (starting point 321a and terminal point 323a), and has stipulated to generate the reason of browsing object and described.Starting point and final position (321a and 323a) all are stored as adopts hour: minute: second: the time code of the form of frame; Operation can be skips or quiet (325a); Be described as the text field (327a); Be configured to be used to judge the identifier (329a) of browsing object 320a and whether being suitable for particular user systems 380b.Numeric representation start position 321a is 00:30:10:15; Final position 323a is 00:30:15:00; Filter operation 325a is for skipping; Describing 327a is " scene of bleeding "; And configuration 329a is 2.1.With reference to Fig. 4 B and 5B, will provide about browsing object, for example browse object 320a, more details.

As browser 310a monitor audio Video Decoder 350a whether just during time code, the object of browsing among this time code and the object storage 316a is compared at decoding multimedia content.In the time of in position code falls into by the scope in the starting point of browsing the object defined and final position, browser 310a activates and distributes to the filter operation of browsing object.For browsing object 320a, 00:30:10:15 to 00:30:15:00 almost the time code in 4 seconds scopes cause browser 310a to send the order that jumps to this section ending so that the content of multimedia of this section of not decoding to AV decoder 350a, and the content of multimedia that this section is not provided to output unit 370a.With reference to Fig. 4 A, 5A, 6 and 7 process of this filtering multimedia content will be described in more detail.

As Fig. 3 A, Fig. 3 B comprises content source 330b, AV decoder 350b, and output unit 370b.Yet in Fig. 3 B, object storage 316b is positioned at server system 390b, and all other elements all are positioned at custom system 380b.Shown in starting point 321b, terminal point 323b, operation 325b, description 327b and configuration 329b, the content of browsing object 320b remains unchanged.

Content source 330b includes DVD driver 334b and DVD332b, and with AV decoder 350b, irrelevant interface 352b of manufacturer and browsing software 312b form single assembly together.In the communication that exists on the communication link 314b between browsing software 312b and the object storage 316b.Communication link 314b is an example of communicator, and should be interpreted as comprising any communication link that is used for the switching computer system data.Be used to realize that the specific communication agreement of communication link 314b is also inequality between each embodiment.In Fig. 3 B, at least a portion communication link 314b can comprise the internet.

Output unit 370b comprises the TV 372b with video inputs 374b and has the audio receiver 377b of audio input end 376b.Audio receiver 377b is connected with loudspeaker 378b.As pointing out before that the advance of output unit 370b and complicacy depended on the implementation of specific embodiment.As shown in the figure, output unit 370b is fairly simple, but can add many elements without departing from the invention, for example video and audio receiver, amplifier, additional loudspeaker or the like.And output unit 370b also there is no need to comprise simultaneously video and audio components.If content of multimedia only includes audio content, the video element is unnecessary so.Similarly, if content of multimedia only includes video data, can remove the audio components of output unit 370b so.

Forward Fig. 3 C of next to, browser 310c, content source 330c, AV decoder 350c and output unit 370c are provided all.Be similar to Fig. 3 B, Fig. 3 C comprises server/remote system 390c and custom system 380c.For the embodiment shown in Fig. 3 C, browser 310c is positioned at server/remote system 390c, content source 330c, and AV decoder 350c, and output unit 370c is positioned at custom system 380c.

Browser 310c comprises server browsing software 312c and object storage 316c, and the exchanges data between them is shown in four-headed arrow 314c.Starting point 321c, terminal point 323c, operation 325c, 327c and configuration 329c are described, the content that object 320c is browsed in expression with browse object 320b and compare with 320a (Fig. 3 B and 3A) and remain unchanged.Content source 330c comprises DVD driver 334c and DVD332c, and output unit 370c comprises graphics adapter 374c, video display 372c, audio frequency adapter 376c and loudspeaker 378c.Because content source 330c and output unit 370c are identical with respective element among Fig. 3 A, will no longer repeat description herein to it.

Different with Fig. 3 A is that client browsing software 354c is added into AV decoder 350c and the irrelevant interface 352c of manufacturer.Client browsing software 354c supports browsing software 312c and the irrelevant interface 352c of manufacturer to communicate by communication link 356c.In certain embodiments, client browsing software 354c is unessential; And in a further embodiment, some supports that the communication interface of communication link 356c then is essential.For example, suppose that custom system 380c is a personal computer, server/remote system 390c is a server computer so, and at least a portion communication link 356c comprises the internet.Client browsing software 354c helps to set up communication link 356c and transmission information between custom system 380c and server/remote system 390c.

Now, suppose that content source 330c and AV decoder 350c are combined into traditional DVD player.Server/remote system 390c can be incorporated into by infrared or other communication channel and control in the telepilot of DVD player operation.Example hereto and since server/remote system 390c can with the DVD player direct communication, and be responsible for control audio Video Decoder 350c, so the irrelevant interface 352c of client browsing software 354c and manufacturer does not need by DVD player.

The mock-up position code that is provided in conjunction with Fig. 4 B and 5B and browse object is described several method of operation of the present invention with reference to Fig. 4 A, 5A, 6 and 7 illustrated process flow diagrams.Fig. 4 A represents the sample method that is used for the filtering multimedia content according to of the present invention.Although Fig. 4 is A, 5A, 6 and 7 is expressed as a sequence incident with this method, the present invention must not be limited to special order arbitrarily.Because these methods may be carried out in user and server system, so use parenthesis to indicate common information about server.

From custom system, the custom system represented of Fig. 3 A for example, object storage can be the part of bigger data-carrier store.For example, the existence of independent object storage may be in order to be stored in the content of multimedia on the single DVD title.Because generated many object storage, so will from content source, retrieve the content of multimedia title at square frame 412 places.In other words, single object storage may comprise and the corresponding object of browsing of one or more DVD titles.At square frame 414 places, utilize title identifier, selection is at the object storage of specific DVD title and browse object accordingly.(square frame 416 will be described later reception fee usefulness, with reference to server system).At square frame 422 places, retrieval is browsed object at first of the DVD at 412 places title identifier.

Temporarily forward Fig. 4 B to, browse object and be shown in the content of multimedia.What location of content 480 signs were relevant with content of multimedia is the diverse location of mark with P41, P42, P43, P44, P45, P46 and P47.The object part 490 of browsing of content starts from starting point 491 (P42), ends at terminal point 493 (P46).Skipping 495 is the filter operations of appointing to browsing object, and the scene of bleeding 497 is textual descriptions that content of multimedia is browsed object part 490.Configuration 499 indicates the software and hardware configuration of browsing the applied custom system of object.For example, configuration 499 comprises subscriber computer, DVD driver, graphics card, and the manufacturer of sound card, model and software version, and can indicate the mainboard of DVD demoder and subscriber computer.

Configuration 499 purpose is that different custom systems may be brought and handles the difference of browsing on the object.After these differences of identification, the customizable object of browsing that is used for particular user systems, and can not have influence on other custom system.Configuring identifier can produce according to the scheme of any tracing object version.In Fig. 4 B, configuring identifier comprises a main and less important correction, is separated by with fullstop.

Return Fig. 4 A now, retrieved the above-mentioned object of browsing at square frame 422 places.Determination block 424 judges whether the configuring identifier of browsing object meets the configuration of custom system.Meet do not necessarily require between configuring identifier and custom system strict identical.For example, if use main and less important version, coupling may only need main version identical.In addition, a configuring identifier of browsing object may meet all user's configurations.Configuring identifier might comprise the expression formula with asterisk wildcard, and it is used to mate one or more characters and mathematical operator is judged match condition, and analog.If do not match, return the square frame 422 retrieval next ones and browse object.

Retrieve a content designator (412), object (414) is browsed in selection, object (422) is browsed in retrieval, and judge whether configuring identifier meets custom system configuration (424) and be enclosed in the dotted line scope, represents that they are all operations examples that may occur in the step with object storage of browsing object is provided.

Utilize the object of browsing discerned, demoder begins the content of multimedia that receives from DVD decode (432).In case behind the content decoding, just extremely can be to the output device of user's play multimedia content with its transmission (434).When decoding multimedia content, position code is upgraded (436) continuously.Decoding (432), transmit (434), and upgrade position code operations such as (436) continuously and be enclosed in the dotted line scope, represent that they are to use demoder to judge when content of multimedia is in included operational instances in the step (430) in the scope of browsing object.

The step of filtering multimedia content (440) comprises that position code that will upgrade and the object of having discerned of browsing compare the operation whether position code that upgrades with judgement falls into the operation in the scope of browsing object and activate filter operation (444) in due course in square frame 422.If the position code that upgrades does not fall in the scope of browsing object, proceed decoding at square frame 432 places.If but the position code that upgrades falls in the scope of browsing object, activate filter operation (444) so.After filter operation activated, the retrieval next one was browsed object at square frame 422 places.

Utilize the object of browsing shown in Fig. 4 B, will describe the method for Fig. 4 A in more detail.In square frame 422, retrieve and browse object, and check by the configurations match of square frame 424.When at square frame 432 places with content of multimedia decoding and after square frame 434 places are sent to output unit, 436 places upgrade position code at square frame.The position code that P41 is equivalent to upgrade.Because P41 not in the scope of starting point and final position (491 and 493), so more content of multimedia is decoded (432), is sent to output unit (434) and upgrades position code (436) once more.

The position code that upgrades is P42 now.P42 indicates by the defined content of multimedia of the starting point of browsing object and final position (491 and 493) and browses the beginning of object part 490.In square frame 444, activate the video filter operation, skip 495.Activate the video filter operation and send order so that it stops decoding immediately, and continue decoding at final position 493 places to demoder.Content represented between P42 and P46 is skipped.After skipping, the retrieval next one is browsed object at square frame 422 places, and repeats above-mentioned operation.

The stopping suddenly and continues of decoding may cause significantly artificially vestige, and it impairs the effect that content of multimedia is planned.In order to reduce this potential artificial vestige, can activate filter operation progressively, maybe can use and disperse gradual filter operation.For example, fading out formula (for example, showing to blank from normal demonstration) filter operation can be prior to the filter operation of skipping, and fading in formula (for example, showing extremely normal the demonstration from blank) filter operation can be immediately following after the filter operation of skipping.In addition, by adjusting starting point and final position, can be included as a part of skipping filter operation self with fading out formula and fading in formula.The length of fading out formula and fading in formula can clearly be provided with or use the default value of suitable setting.The concrete variable quantity of gradual filter operation for example from normally showing to blank, needn't be restricted; Take up an official post at interval and mean fixed variation and more it should be interpreted as be included in some, for example from normally to 1/2nd intensity.And, can use gradual filter operation to come actual any characteristic of adjusting content of multimedia.

When content of multimedia included the visual information of demonstrating to spectators, inappropriate material may only be confined to certain physical region of its scene of demonstrating.In these cases, applicable one or more objects of browsing with reconstruct filter operation.Whole scene needn't be skipped, and this is because can locate the frame watched being avoided showing inappropriate material, and can amplify remaining content so that the demonstration of overall dimension to be provided.By the framing and the size that are adjusted at a content of multimedia in the scene continuously, inappropriate material is by cutting from watch effectively.

The operation that object can both be carried out many reconstruct/adjustment size is browsed in each reconstruct, and comprising can be based on the reconstruct and the adjustment size of successive frame.Therefore, the quantity that object is browsed in employed reconstruct in the cutting special scenes depends on various factors, comprises how time to time change of scene.The single object of browsing may be enough to filter relatively-stationary scene, and more dynamic scene needs a plurality of objects of browsing probably.For example, the scene reconstruction of whole body image of browsing object and may being enough to represent the serious injured people's of a shank static state in fact is to include only this people's the head and the scene of trunk.Yet for more dynamic scene, for example the scene that the serious injured people of shank is involved in a violence fight or quarrels with another person may need more to browse the effect that object is improved.

Position P41, P42, P43, P44, P45, P46 and P47 separate by upgrading at interval.Those skilled in the art will be appreciated that littler renewal will be allowed filtration more accurately at interval.For example, if starting point 491 after the P42 of position soon, so much media decodes and output will last till position P43, expression is the content of multimedia that is filtered of 1/4th script almost.Utilize the renewal that took place in 1/10th seconds once at interval, have only very a spot of content that should be filtered (for example, be less than a second 1/10th) to be shown in output unit.As configuring identifier 499 description hinted, can reckon with reasoningly that in the custom system some changes, and the filtration that the present invention should not be interpreted as content of multimedia needs extremely accurate.Although the variation on some moment order has reduced the appreciable filter quality of user, this is because some scenes may just have been ended before showing fully, but these change tolerable, and compensate by browsing this part content that object limits by launching.

Difference between the server operation that is impaled by bracket and the user's operation is quite little, and those skilled in the art will be appreciated that user and server can be cooperated, and each all carries out required part operation.Fig. 3 B provide a kind of between server system and custom system the canonical system of shared processing process.Yet, will be described in the processing procedure of the server system place appearance that is similar to shown in Fig. 3 C below, but only have the output unit that is positioned at custom system.

At square frame 412 places, server receives the DVD title identifier so that can select the suitable object of browsing in square frame 414.At square frame 416 places, server receives the expense of custom system, is used to make custom system to visit and browses object.This expense may be the reservation of special time cycle, concrete access quantity or the like.Whether first of the DVD title of determining at 412 places in square frame 422 places retrievals browsed object, mate in the check configuration of square frame 424 places.Because configurations match is to test at the server place, custom system provides its configuration information or identifier.As mentioned above, received content identifier (412), object (414) is browsed in selection, reception fee is used (416), object (422) is browsed in retrieval, and judge configuring identifier whether with the configuration of custom system be complementary (424) be enclosed in the dotted line scope, represent that they are all operations examples that may occur in the step with object storage of browsing object is provided.

Decoding multimedia content (432) can occur in custom system or server system.Yet, need a large amount of communication bandwidths to the multimedia that custom system sends through decoding from server system.At square frame 434 places, content of multimedia is sent to output unit.Then, server system inquiry (436) client demoder is to upgrade position code.In addition, if decode in the server system, will upgrade position code (436) so and need not to inquire custom system.Decoding (432), transmit (434) and upgrade continuously or (436) operation of etc.ing of inquiring position code has been enclosed in the dotted line scope, represent that they are to judge at the use demoder when content of multimedia is in included operational instances in the server system operation steps (430) in the scope of browsing object.

What the server system of execution content of multimedia filtration step (440) comprised is operating as, (i) in square frame 422, relatively upgrade position code with discerned browse object and whether be in the scope of browsing object judge to upgrade position code, and (ii) activate or send filter operation (444) at reasonable time.Be not in the scope of browsing object for upgrading position code, then continue decoding at square frame 432 places.Not so, be in the scope of browsing object, then activate or send filter operation (444) for upgrading position code.When being positioned at custom system, demoder produces activation, if but demoder is positioned at custom system, filter operation must be sent to custom system so so that handle.After activating filter operation, the retrieval next one is browsed object in square frame 422 places, proceeds aforesaid process.Because the description of server operation and the top custom system that provides is basic identical, so will no longer repeat analysis about Fig. 4 B of server system.

Fig. 5 A illustrates the sample method according to filtration audio content of the present invention, and this audio content may include video content.Provide 510, use 530 step, comprise as handling the operation of square frame 512,514,516,522,524,532,534 and 536 expressions, all identical in fact with operation with the described corresponding steps of reference Fig. 4 A.Therefore, the description of Fig. 5 A is from the step (540) of filtering multimedia content.

Decision box 542 is judged and is upgraded or whether the position code of inquiry is located in square frame 522 and the 524 determined scopes of browsing object.If decision box 552 judges whether filter operation activates so.Fall in the scope of browsing object for the part content of multimedia, when filtering actuator-activated or having sent (in the example at server system), decoding can be proceeded at square frame 532 places.Yet if filter operation has been activated and the position code that upgrades when not being in the scope of browsing object, square frame 546 activates or sends end operation, and by determining to continue after the next one is browsed object at square frame 522 and 524 places.

Generally speaking, some filtration can be realized that as the vision operation of Fig. 4 B, and other filtration needs ongoing operation, as the audio operation of Fig. 5 B by an operation.Mock-up position code shown in Fig. 5 B and audio frequency are browsed object and are helped to illustrate the filter operation of single content of multimedia and the difference between continuous or the ongoing content of multimedia filter operation.What location of content 580 signs were relevant with content of multimedia is the diverse location of mark with P51, P52, P53, P54, P55, P56 and P57.The object part 590 of browsing of content starts from starting point 591 (P52), ends at terminal point 593| (P56) |.Quiet 595 is the filter operations of appointing to browsing object, word " F " the 597th, the textual description of browsing object part 590 of content of multimedia.As the configuration among Fig. 4 B 499, configuration 599 indicates the software and hardware configuration of browsing the applied custom system of object.

At square frame 532 place's decoding multimedia contents and after square frame 534 places are sent to output unit with decoded content of multimedia, upgrade position code at square frame 536 places.The position code that P51 is equivalent to upgrade.Because P51 does not have in the scope of starting point and final position (591 and 593) and do not have filter operation to be activated or send (556), so more content of multimedia is decoded (532), be sent to output unit (534), and upgrade position code (536) once more.

The position code that upgrades is P52 now.P52 indicates by the defined content of multimedia of the starting point of browsing object and final position (591 and 593) and browses the beginning of object part 490, judges as decision box 542.Because operation is not activated or sends, so appointing to the filter operation of browsing object by activation or transmission (544), continues decision box 552 with quiet audio content, carry out content decoding (532) again, be sent to output unit (534), and renewal or inquiring position code (536).

Quiet, in its most common form, the volume that relates to audio content is set to and can't hears.Therefore, do not need to use demoder just mute command can be sent to output unit.In addition, audio content can be eliminated or suppress to the mute command that sends to demoder.Those skilled in the art will be appreciated that audio content may include one or more sound channels, and quietly can be applied to one or more in these sound channels.

Now, the position code (536) of renewal or inquiry is P53.Decision box 542 is determined to upgrade or the position code (536) of inquiry is positioned at the scope of browsing object, but filter operation is activated or is sent out (552), so 532 pairs of content decodings of square frame, square frame | 534| is sent to output unit with content, and square frame 536 upgrades or the inquiring position code.Audio content is constantly decoded, and quiet operation constantly is activated.

Here, the position code (536) of renewal or inquiry is P54.Decision box 542 determines that the position code (536) of renewal or inquiry no longer is positioned at the scope of browsing object now, but decision box 556 expression filter operations are activated or are sent out.Square frame 546 activates or sends end operation to finish quiet to audio content, continues decoding at square frame 532 places.For dvd content, the possibility of result is that video content is play in output unit, and the part audio content that includes by the obscene speech of browsing the object defined is filtered, and does not broadcast in output unit.

Unexpected conversion content of multimedia may cause significantly artificial vestige, and it impairs the effect that content of multimedia is planned.In order to reduce this potential artificial vestige, can activate filter operation progressively, maybe can use and disperse gradual filter operation.For example, fading out formula (for example, from normally to there not being volume) filter operation can be prior to quiet filter operation, and filter operation can be immediately following after the quiet filter operation to fade in formula (for example, never volume to normal quantity).In addition, by correspondingly adjusting starting point and final position, can will fade out formula and fade in the part that formula is included as quiet filter operation self.The length of fading out formula and fading in formula can clearly be provided with or use the default value of suitable setting.The concrete variable quantity of gradual filter operation, for example from normally to there not being volume, needn't be restricted; Take up an official post at interval and mean fixed variation and more it should be interpreted as be included in some, for example from normally to 1/2nd volumes.And gradual filter operation can actual any characteristic of adjusting content of multimedia.

As the method shown in Fig. 4 A, the method shown in Fig. 5 A also can be carried out in client and server system.Yet, owing to the difference that in the description of Fig. 4 A and Fig. 4 B, has identified fully between custom system and the server system, so this method will not described in server system.

Fig. 6 is the process flow diagram that illustrates the method that is used for the customizing multimedia information filtering.At square frame 610 places, check and approve the password that received will browse object invalidation.In square frame 620, the explanation of browsing object is shown in or is sent to (for server system) custom system.Next step, shown in square frame 630, it is invalid response that reception will be browsed object identity arbitrarily; And in square frame 640, invalid discerned browse object.

By include them in browsing object should not be the indication of the part of filtration treatment, thereby these are browsed object invalidation.These operations of browsing object of retrieval shown in the square frame among Fig. 4 A and the 5A 422 and 522 can be ignored and have been labeled as the invalid object of browsing, so they are not retrieved.In addition, can carry out independent operation and get rid of the invalid object of browsing that just in content of multimedia filters, is using.

Receive password (610), the explanation (620) of object is browsed in demonstration or transmission, reception will be browsed object and be identified as invalid response (630), and will browse object invalidation operations such as (640) and be enclosed in the dotted line scope, represent that they are to be used for the invalid included operational instances of operation steps (660) of browsing object.As aforesaid typical method, the invalid object of browsing also can be carried out in custom system or server system.

Fig. 7 illustrates the typical method that helps automatic identification of custom system and filtration fraction content of multimedia.Be used to provide the step (710) of object storage to comprise to generate and browse object (712), formation object storage (714), and will browse object and be positioned over operations such as object storage 716.Be used to provide browse object step (720) following closely.Be used to provide the step (720) of browsing object to comprise retrieval of content identifier (722), title for example, and retrieval and browse the corresponding request of object operations such as (726).

In the step that is used for visit is browsed the charge of object, square frame 732 indicates judges whether the user has the operation of having set up the account.For example, if the user is current subscriber, need not charge so.In addition, expense will be deducted from the account of pre-payment, and need not to point out user's (not shown).At square frame 734 places,, for example import the electronic money of credit card number or some other forms if the account who has not set up will point out subscriber payment so; And in square frame 736 place's reception fees usefulness.Be used to provide browse object step (740) following closely, include retrieval and browse object (742) and transmission is browsed object to custom system operations such as (744).Download the operation of using the free browsing software of browsing object and may be counted the initiation of visiting the chargeable service of browsing object.

More contents of the present invention relate to system, equipment and the method for user's play multimedia demonstration, have for example had the bad scene of crossing elimination and the film of language by DVD provided.Other content of the present invention relates to the filtration form that definition can be applicable to the event filter of any multimedia presentation.Another aspect of the present invention content relates to a series of operation, compares with one or more kill files and monitors the multimedia presentation playback, and filter playback according to the function of kill file.

Main contents of the present invention relate to one or more parts of filtering multimedia content.Filtration may relate to the bad language in the quiet multimedia presentation, skip bad part in the multimedia presentation according to the function of time of bad language or video, adjust the image of video display, for example by cutting, or disappear, or adjust playback in addition, or adjust bad language, image or other content with elimination, reduction.Filtration can further prolong other content that has been equipped with in multimedia presentation, comprise captioned text, data link, performance guide information etc.

Usually, DVD can hold the film of the complete length with the high quality audio up to 133 minutes that compresses according to Motion Picture Experts Group (" MPEG ") coded format and video.An aspect of of the present present invention content relates to the modification without any the multimedia presentation form that occurs for filtration.In order to carry out filter operation, content of multimedia does not need preformatting, and does not need it is stored on the DVD with customizing messages relevant with language that transmits in any time of multimedia presentation or image type.But filter operation relates to the time code that just exists of the multi-medium data that supervision reads from DVD.Kill file comprises and wants to skip or the quiet corresponding time code of part multi-medium data.Coupling between the time code of the part multimedia presentation of reading from DVD and the time code of kill file can cause the execution of filter operation, and is for example quiet or skip.Also may monitor other mark of the multi-medium data that reads from DVD, for example the physical location mark on the storage medium of reading of data.

Employed herein term " decoding " broadly refers to read multimedia messages to demonstrate any between the multimedia messages processing stage from storage medium.In some occasion, term " decoding " refers in particular to mpeg decode.In some embodiments of the invention, before mpeg decode, to compare kill file and multi-medium data.Just comparing operation after mpeg decode also is fine; Yet, utilize current decoding processing platform, from the angle of time, such that efficient relatively is set is low, also can cause the shake of some artificial vestiges or demonstration.

During traditional multimedia presentation played in order, DVD player reads multimedia messages from DVD, up to carrying out quiet or time search.Therefore, carry out the upward relevant operation of play command with DVD.This play command makes read/write head reading section video from DVD sequentially." in proper order " as used herein means the data sequence that is equivalent to the content of multimedia order.Yet multi-medium data may be positioned on the storage medium practically in unordered mode.The multimedia messages that reads from DVD is stored in the impact damper.On this aspect of processing procedure, all multimedia messagess read from DVD, and are stored in impact damper, and no matter whether voice data is muted, and perhaps whether the partial video data are skipped.Before showing on monitor, TV or the analog, decode to multimedia messages from the mpeg encoded of impact damper.

The part that typical DVD can have several dispersions is called " title ".One in the title is film, and another title can be montage behind the scenes, copyright statement, marking pattern, and analog.In a specific embodiment, when the configuration embodiments of the invention move to utilize all possible title, kill file is applied to the time series of original film title, for example, the frame sequence that is associated with concrete film, for example, " wrestler " of the last outfit of DVD.The DVD regulation and stipulation three kinds of titles (not obscuring mutually) with movie name: the monoblock type title, the meaning is to play-over by (one _ in proper order _ program _ chain title), have a plurality of PGCs (program chain) to distinguish the title (a plurality of _ program chain _ title) of program stream, the parents restrict that has according to DVD player is provided with the title (father and mother _ obstruct _ title) of selecting a plurality of PGCs automatically.Order program chain title is the current unique type of complete time data that is used to show with code search time that has.Therefore, use one _ in proper order _ program chain _ title, the multimedia messages that reads from DVD includes time code.For other filtration types, can rise time information and this time information is associated with the particular playback path.Specific embodiments more of the present invention use one _ in proper order _ program chain _ title moves.

On the one hand, will read and be stored in the time code of multimedia messages of memory buffer unit and the kill file in the filter table from storage medium compares.Filter table is the set of one or more kill files of specific multimedia presentation.Kill file is the sign and the corresponding filter operation of part multimedia presentation.This part multimedia presentation can be determined by starting point and terminal time code, can be determined by the starting point of storage medium and the physical location of terminal point, can be determined by time or position and side-play amount (time, distance, physical location, or their combination).The user can activate the combination of any kill file or not have kill file.Following table 1 provides the example of two kill files of film " wrestler ".The filter table of specific multimedia presentation can be provided as the individual files on movable storage medium, the different storage medium, as the multimedia presentation in the same storage media, or this filter table is loaded into the storer of the multimedia player of according to the present invention content configuration operation.

Filter	Starting point	Terminal point	Duration	Filter operation	Filtering code
							1	00:04:15:19	00:04:48:26	997	Skip	2∶V-D-D，V-D-G
2	00:04:51:26	00:04:58:26	210	Skip	1∶V-D-G

Table 1: filter table with two kill file examples of film wrestler

Referring to table 1, the starting time of first kill file (1) be 00:04:15:19 (hour: minute: second: frame), terminal time is 00:04:48:26.First kill file also has the duration of 997 frames, is the filter operation of " skipping " type (with quiet opposite).At last, first kill file is relevant with two filtration types.First filtration types is designated " V-D-D ", and it is at the filtering code that occurs dead (D) corpse or corruption (D) corpse in violence (V) scene.Second filtration types is designated " V-D-G ", and it is the filtering code at the violence scene relevant with making us irritated (D) and/or offensive (G) image and/or dialogue.Embodiments of the invention comprise many other filtration types.In film " wrestler " replayed section after filtering, if " V-D-D ", " V-D-G " or both are activated, and 997 frames that fall into so between the 00:04:15:19 to 00:04:48:26 are skipped (do not have and show).In addition, if the V-D-G kill file is activated, 210 frames that fall into so between the 00:04:51:26 to 00:04:58:26 are also skipped.

Following table 2 and table 3 provide the example of abideing by various possibility filtration types of the present invention.Other filtration types can realize in various embodiment of the present invention.

Filtering code	Filtering classification	Filtration types
			S-P-S	Property/nude	Pornographic dialogue/plot
S-P-C	Property/nude	The clothes of provocative/exposure
			S-P-I	Property/nude	The pungency hint
S-C-W	Property/nude	Rough property vocabulary/dialogue
			S-C-A	Property/nude	Rough sexual behaviour/gesture
S-C-I	Property/nude	Rough sexual cue
			S-S-SS	Property/nude	The property scene
S-S-SR	Property/nude	Sound/the dialogue relevant with property
			S-S-A	Property/nude	Tangible sexual behaviour/image
S-N-R	Property/nude	Exposed hip
			S-N-T	Property/nude	Chest/upper body nude shields
S-N-P	Property/nude	The nude of local nude/zone face yarn
			S-N-A	Property/nude	Nudie/art
			V-S-F	Violence/extravasated blood	Powerful illusion thing/biological violence
V-S-A	Violence/extravasated blood	Strong behavior violence
			V-S-E	Violence/extravasated blood	Too much/violence that repeats
V-S-C	Violence/extravasated blood	Clumsy funny violence
			V-G-B	Violence/extravasated blood	Cruel violence
V-G-G	Violence/extravasated blood	Lively bloody violence
			V-G-D	Violence/extravasated blood	Make us irritated violence
V-G-R	Violence/extravasated blood	Rob/rape scene
			V-G-T	Violence/extravasated blood	Torment
V-D-D	Violence/extravasated blood	Corpse/carrion
			V-D-V	Violence/extravasated blood	Lively vomitus/urine/saliva/mucus
V-D-B	Violence/extravasated blood	Strong bloody image
			V-D-G	Violence/extravasated blood	Make us irritated/disgusting image/dialogue
			L-C-W	Coarse language and clumsy humour	Clumsy ight soil vocabulary/sound
L-C-A	Coarse language and clumsy humour	Clumsy ight soil image/dialogue
			L-R-M	Coarse language and clumsy humour	Rough/vicious name address (being limited to child film)
L-E-R	Coarse language and clumsy humour	The race humiliates
			L-E-S	Coarse language and clumsy humour	Society humiliates
L-H	Coarse language and clumsy humour	Hell (Hell)
			L-H-d	Coarse language and clumsy humour	Curse (Damn)
L-D	Coarse language and clumsy humour	Relate to the useless of God or god
			L-P-	Coarse language and clumsy humour	Strong profanity speech
Ba/Bi	Coarse language and clumsy humour	Illegitimate child/prostitute (B *stard/B *tch)
			A/S/Fi/	Coarse language and clumsy humour	A **/Sh **/ play with finger
L-V-F	Coarse language and clumsy humour	F ***
			L-V	Coarse language and clumsy humour	Lively/vulgar vocabulary
			D-D	Other content	Significantly use drugs/dialogue
D-R	Other content	Relate to the use drugs

Table 2: the related content of filtration types and every kind of filtration types is described

Table 2 provides one to be listed in accordance with the filtration types example that provides separately in the embodiments of the invention or provide with array mode.These filtration types are grouped into | and five | individual big class comprises: property/nude, violence/extravasated blood, coarse language and clumsy humour, and adult's theme.In each class in these four big classes, all be the row specific filter type relevant with each big class.In the filter table of specific multimedia presentation, the different time sequence of multimedia presentation (between starting time and terminal time) is identified as and includes the theme that falls in one or more filtration types.In a certain embodiments, when specific kill file was applied to multimedia presentation, the multimedia time series can be skipped or be quiet.In addition, or in addition, can skip or quiet multimedia time series according to the effect of big class.For example, all will be skipped or quiet in all multimedia presentations of the big class of filtration that falls into violence/extravasated blood.

Filtering code	Filtering classification	Filtration types	Filter operation
				V-S-A	Violence	Strong behavior violence	Remove undue violence, comprise fantasy violence
V-B-G	Violence	Cruelty/bloody violence	Remove cruel and lively violence scene
				V-D-I	Violence	Make us irritated image	Remove offensive and other make us irritated picture
S-S-C	Property/nude	Pornograph	Remove strong hint and provocative scene and dialogue
				S-C-S	Property/nude	Rough property content	Remove rough language and gesture
S-N	Property/nude	Nude	Remove nude, comprise local and the art nude
				S-E-S	Property/nude	Tangible property scene	Remove tangible property dialogue, sound and action
L-V-D	Coarse language	Relate to the useless of God or god	Remove the useless or respectful of relevant god
				L-C-L	Coarse language	Rough language and humour	Remove rough language and gesture
L-E-S	Coarse language	Race/society humiliates	Remove race or social offending
				L-C	Coarse language	Curse	Remove " h *Ll " and " d *Mn " abuse
L-S-P	Coarse language	Strong profanity speech	Remove the vocabulary of cursing, comprise strong profanity speech
				L-G-V	Coarse language	Lively vulgarity words	Remove lively coarse language, comprise " f ***”
O-E-D	Other	Significantly use drugs	Remove the description of drug abuse scene

Table 3: the associated description of filtration types and every kind of filtration types content

Table 3 provides one to be listed in accordance with the filtration types example that provides separately in the embodiments of the invention or provide with array mode.These filtration types are grouped into | and five | individual big class comprises: violence, property/nude, coarse language, and other.In each class in these four big classes, all be the row specific filter type relevant with each big class.In the filter table of specific multimedia presentation, the different time sequence of multimedia presentation (between starting time and terminal time) is identified as and includes the theme that falls in one or more filtration types.In a certain embodiments, can skip or quiet multimedia time series according to the effect of specific filter type, for example, V-S-A.In addition, or in addition, can skip or quiet multimedia time series according to the effect of big class.For example, all will be skipped or quiet in all multimedia presentations of the big class of filtration that falls into violence

Fig. 8 A and 8B illustrate a kind of operational flowchart based on the multimedia presentation of DVD such as film that kill file is applied to play that relates on DVD player.In an example, filtration monitoring starts from the broadcast (operation 10) of multimedia presentation.Therefore, in an example, when the user presses the Play button of DVD player or the Play button on the telepilot in DVD player, begin to play." broadcast " in the film occasion relates to the equal video and the audio presentation of film on display.Following more detailed discussion is being depressed between " broadcast ", and the user at first activates one or more film filtration types.And, if the filter table of film is not provided in the storer such as the multimedia player of DVD, the user must at first be loaded on storer with this filter table so, or multimedia player must at first obtain filter table, for example the mode by some automatic down operation.

As top introduction, during playback, multimedia messages reads and is stored in impact damper (operation 15) from DVD.The multimedia messages that is stored in DVD is arranged according to the normal layered mode of DVD standard.A some embodiments of the present invention operation part is called as the multi-medium data of video object unit (" VOBU ").VOBU is the minimum playback unit according to the DVD standard.Yet in some embodiments of the invention, minimum playback unit is a frame.A VOBU is an integer video field, and the length range of video field is 0.4 to 1 second usually, approximately the 12-15 frame.Therefore, the playback of VOBU can be accompanied by 0.4 to 1 second video, audio frequency, or the both has.VOBU is the subclass of unit.Generally speaking, the unit is made up of one or more VOBU, and its general features is set of diagrams picture or audio section, and it is the minimum addressing part of program chain.By selecting the unit in an orderly manner, can arrange playback.

In the process of playback (after multimedia reads from storage medium, but before demonstration), some embodiments of the present invention monitor will read from impact damper so that decode and the time code of the next multimedia messages demonstrated.For information, the time-stamp (time code) of VOBU demonstration will be monitored based on DVD.Time code is embedded in the multi-medium data that stores in storage medium.For other multimedia form, can monitor the multimedia messages that from storage medium, reads respectively, and this multimedia messages is associated with the time code that generates separately.Time code information may be the function of system clock.Impact damper (being sometimes referred to as " track " impact damper) is the storer that is configured to first in first out (FIFO) mode of operation.The term impact damper can refer to storage medium arbitrarily, comprises RAM, flash memory or the like.So, the content of multimedia that reads in impact damper is read from impact damper again in the same sequence of its arrival.In a certain embodiments, after multimedia is read, but before it is decoded, carry out specific filtration resistance from storer (for example DVD).In such embodiments, will from impact damper, send so that the starting time of the filter operation that is identified in the time code of the VOBU that decodes (VOBU in the fifo buffer front portion) and the filter table at this multimedia presentation compares (operation 20).If do not match (operation 25), the information in the impact damper is normally carried out order decoding and demonstration (operation 30) so.

If coupling (operation 25) is determined filter event type (for example quiet or skip) (operation 35) so.For quiet, video image is play and normally to be carried out, but some or all audio-frequency units are muted, until incident concluding time code (operation 40).The quiet analogue audio frequency that is interpreted as of audio frequency is exported, DAB output, or the both has.For | audio frequency | quiet, the amplitude of sound signal is reduced to zero in during quiet.For digital silence, numeral output is converted to digital 0s in during quiet.

Fig. 3 B illustrates to relate to the operational flowchart of skipping.Cross the filter operation of type in order to carry out this jump, explain playback (operation 50).Next step, the impact damper that resets (operation 55).The feature that impact damper resets is all information or " emptying " impact damper in the deletion impact damper.After resetting, all fresh informations that read in impact damper start from first memory address.The impact damper that resets can adopt many modes to realize, for example buffer address pointer (will store next the bar information of reading from DVD herein) is reset to first address (that is, making that existing buffered data is rewritten) of impact damper.

Then, order DVD reading unit begins to read the frame (operation 60) about the filtration end point time code.Further go through as following, except time code, the starting point of kill file and terminal point also can be endowed the combination of other numerical value or numerical value.Be sent to first memory location in the impact damper about the frame of filtration end point time code, and playback starts from the frame after the terminal time, it is decoded and together show (operation 65) with related audio.

Fig. 9 is the block scheme that illustrates institutional framework example on the screen that is used to activate one or more filter operations.Menu as shown in a figure also may be provided on the different screens in abideing by the embodiment of content of the present invention.First menu shows one or more filtering classification.The example corresponding tables 3 of Fig. 9 has four filtering classification, comprising: violence, and property and nude, coarse language, and other.In the menu of this example is arranged, because just selection sort uses classification to visit and the one group of corresponding filter operation of classifying, so do not activate kill file.Therefore, by selecting a classification, demonstrate to have second filter menu with the corresponding one group of filter operation of selected classification.In the example of Fig. 9,, demonstrate menu on the screen with the filter operation of three kinds of violence types by selecting " violence " classification.The filter operation of this violence type can be a table 2, those filter operations of table 3, or alternate manner arbitrarily.Fig. 9 illustrates table 3 " violence " filter operation, comprising: strong behavior violence, and cruelty/bloody violence, and make us irritated picture.In the example of Fig. 9, the user selects " strong behavior violence " to filter, and this will activate " strong behavior violence filter operation ".Yet, also can activate one group of kill file according to activating a filtering classification.For example, by activation " violence " filtering classification, and activate " strong behavior violence ", " cruelty/bloody violence ", and the kill file of " making us irritated picture ".

Figure 10 A-10C illustrates under the situation that activates " strong behavior violence " filter operation, and three multimedia segment ( parts 5,6 and 7) be identified as under the situation with strong behavior violence (" SAV ") block diagram/flow diagram of 12 multimedia presentation parts of playback.As mentioned above, needn't revise multimedia presentation, maybe needn't revise multimedia presentation so that its specific part is relevant with the subject identifier of some form so that its specific part is associated with specific filter type.But, provide filter table respectively according to multimedia presentation.Filter table has one or more clauses and subclauses, and each kill file all is provided with starting point and the terminal point identifier that is used for the multimedia presentation part.Main contents more of the present invention, for example between filtration treatment, from the multimedia medium, read multimedia presentation information, delete all content of buffer and skip or the like realizing, no matter how whether medium are encoded with filter identifier or are revised and finish with the subject identifier of other form.

At first, from storage medium, read first four parts of this multimedia presentation, and deposit in the impact damper such as DVD referring to Figure 10 A.These parts are read from impact damper again according to the order that it arrives impact damper, and for example part 1-4 begins to read from impact damper to the mode that part 4 finishes with part 1.The time code and the filter table of each part are compared, if do not match, then this part is read from impact damper, shows after decoding.So, each all compares with filter table among the part 1-4, because this part time code and filtration time code (or other starting point and terminal point identifier) do not match, these four parts are read from impact damper, shows after decoding.

Referring now to Fig. 9 B,, when multimedia segment 5 arrives the impact damper front portion, itself and filter table are compared.The part 5-7 of multimedia presentation comprises " strong behavior violence ".Thereby filter table includes the corresponding filtration clauses and subclauses of terminal time with the starting time and the multimedia segment 7 of multimedia segment 5.Part 5-7 will be skipped (not shown).In order to skip part 5-7, with all information in the deletion impact damper.In the example of Fig. 9 B, part 5-7 and part 8-10 are read in the impact damper.Selectively, only delete the content of buffer (for example, part 5-7) relevant with skipping multi-medium data.In such embodiments, bumper portion is reset to part 8.And, in such example, with the control that reduces or eliminates the DVD read head.Part 8-10 does not comprise strong behavior violence.But part 8-10 is deleted from impact damper.Behind impact damper deleted (resetting), with the time search order of carrying out the filtration end point time.This time search order makes that storage medium is that starting point begins the information that reads and enters in the impact damper from medium with part 8.

Shown in Fig. 9 C, multimedia segment 8-12 reads from medium, and is stored in the impact damper.Because the time code of multimedia segment 8-12 is irrelevant with strong behavior violence,, after decoding, show so multimedia segment 8-12 reads from impact damper.

Under situation about realizing based on DVD, traditional multimedia presentation based on DVD is filtered, for example, except regulation according to traditional DVD standard, this DVD title without any need for special format.In order to identify harmful content and definition filter event, someone plays and watches video, and adopts the starting point and the terminal point identifier of harmful content to determine harmful content.The multimedia particular range of DVD title (being delimited by starting point and terminal point identifier) can be divided into the combination of any one kill file or kill file.Before the DVD player of the content configuration according to the present invention is filtered playback, filter table is loaded in the storer of DVD player.

Utilize and be connected with the network of the server that kill file is provided, utilize movably storage medium (DVD for example, CD, disk, storage card or the like), perhaps separates movie title, perhaps on the storage medium identical with movie title, perhaps otherwise, DVD player is configured addressable filter table.The particular instance of access filtering table Network Based or other visit is the U.S. the 60/620th that on October 20th, 2004 submitted to, No. 902 temporary patent applications, with the U.S. the 60/641st of submitting on January 5th, 2005, describe in No. 678 temporary patent applications, by reference they are herein incorporated hereby.

Figure 11 illustrates the block scheme that a suitable multimedia player screen is gone up the menu institutional framework.The access filtering menu is to provide in father and mother's Control-Menu.Father and mother's Control-Menu is the pipeline of different father and mother's control function, comprises traditional father and mother's control assembly and abides by father and mother's control function of content of the present invention.In the example of Figure 11, multimedia player disposes traditional " locking " father and mother control assembly, traditional " password " father and mother control assembly, the filtering function of abideing by content of the present invention, traditional " grade restriction " father and mother's control assembly, and traditional " non-graded title " father and mother's control assembly.By selecting, " locking ", " password ", " grade restriction " or " title of not defining the level ", multimedia player are visited relevant with an every selection certain menu or a pile menu.Usually, " locking " parts allow the Subscriber Locked DVD player, and this quiescing is until input right user identity and password.The password menu provides the device of setting up or changing password to the user." grade restriction " parts make the user can avoid watching the title that exceeds certain grade.The grade limiting part can use MPAA (G/PG/PG-13/R/NC-17) to proofread and correct.Therefore, for example, forbid the title of watching the R level above.Because different users uses specific grade restriction, so the grade limiting part can activate according to user's hobby.The grade limitation function can be realized by the V chip technology." deciding grade and level " parts allow user's forbid perhaps can not defining the level broadcast of title.Therefore, some titles are not defined the level, so the grade limiting part will can not work to forbid or to allow to watch nonrated title.

" filter and play " selection of button, can make multimedia player be written into " filter and play " menu.The user can utilize the arrow key on the telepilot to handle menu on the current screen, when the certain menu button is highlighted, can carry out manipulation between each menu by selecting " input " on the telepilot." filter and play " menu and have " filter and be provided with " button and " available filtration " button.Filtration is provided with button and provides filtering the visit of choice menus, an example as shown in Figure 9.Available the filtering button provides filtering the visit of library menu.Filtering library menu provides one to be listed in all current in multimedia player storer filter operations, and these row are organized by letter sequence with movie title.Filtering library menu also provides row can download the filter operation of use.When as long as new kill file is downloaded to multimedia player, add the possible movie title of institute that this document is suitable for to list kill file.Therefore, this to be listed as available kill file just up-to-date when downloading the date of filter operation.Utilize network to connect, can upgrade filter list regularly, so that should tabulation be up-to-date always.

If multimedia player has included the filter table in storer, the user only need activate filtration so, filters playback then.If filter table is not in storer, the user will be uploaded to storer with filter table before filtering playback so.In addition, the user continues to activate certain filtration types, filters playback then, need not at first to judge whether the filtration of specific multimedia title is available.Under the situation based on the DVD film, DVD has usually can be by the heading message of DVD player visit.Before filtering playback, DVD player is a movie title and a filter table that is listed as in the loaded storer relatively.If do not match, will point out filter table that the user loads this movie title so to storer.

In case filter table is accredited as the certain movie title that is used to want playback, then point out the user to activate or the filtration types of invalid this film.The user will filter choice menus, and will be for example shown in Figure 9, unless filter operation is activated.

As mentioned above, in some embodiments of the invention, itself is not changed film.But the part to film in filter table is discerned.In an example, the part of multimedia presentation is designated the starting point that falls into the particular filter file and a period of time between the terminal time.For example, if the 1:10:10:1 of film (hour: minute: second: frame) strong behavior violence occurs to the time period of 1:10:50:10, will to have starting time be that 1:10:10:1 and terminal time are the filter operation of 1:10:50:10 to the kill file of this film so.This kill file will include the identifier about " strong behavior violence ", for example " S-A-V ".Therefore, if the user activates the kill file type of this strong behavior violence, when a part comprised that the multimedia presentation of 1:10:10:1 is positioned at impact damper, impact damper was with deleted so.Therefore, all information in the impact damper comprise the multimedia presentation part with strong behavior violence, and are all deleted.Impact damper may also have the part multimedia presentation that will show.So, to reading of content of multimedia in the storage medium from closelying follow the next multimedia segment of filtration end point after the time.Be read into impact damper immediately following the multimedia segment after the time of filtration end point, after decoding, show.Because the DVD read head moves to new media location with this speed, and information is read in the impact damper, and with its decoding, so can carry out these operations, and do not discover the artificial vestige (for example, skip operations obviously is seamless) on the screen.

Figure 12 is a graphic extension of skipping type filter operation form example.Figure 13 is the form that identification is used to skip the file layout example of type filter operation.File layout is represented a kill file in the filter table.At first referring to the graphic extension of the skip operations that Figure 12 provided, a kill file of skipping type comprises starting time code and terminal time code.Skip in the VOBU N+1 of starting time code after following VOBU N closely of kill file and occur.The actual frame that is associated with the starting time code is the beginning X frame from VOBU N+1.The terminal time code of skipping occurs in following the VOBU N+P of VOBU N+P+1 thereafter closely.The actual frame that is associated with the terminal time code is the beginning Y frame from VOBU N+P.Starting point and terminal time can with the time code (hour: minute: second: frame) identify, perhaps identify with more detailed multilayer DVD information, will do more detailed discussion below, perhaps the combination by them identifies.In this example, intactly play VOBU N and VOBU N+P+1 (comprising Voice ﹠ Video).Play the preceding X frame of VOBU N+1, and skip other remainder of VOBU N+1.Skip the preceding Y frame of VOBU N+P, and play other remainder of VOBU N+P.All are all skipped with the frame that any VOBUs that falls between VOBU N+1 and the VOBU N+P is associated.

Referring now to Figure 12,, this form illustrates the file layout of skipping the type kill file, according to an example of the present invention.The institutional framework of form is that its left column is the distribution of file layout byte, then is the byte number indication of every kind of distribution, then is the description of byte indication again.This file layout is an example of abideing by the kill file form of content of the present invention.The file layout of abideing by content of the present invention can comprise the some or all of byte indications that identified, can comprise different byte align, is used for the byte quantity of every kind of purposes, and other combination and permutation.Byte 0-7 relates to Packet Identifier.Byte 8 is the filter operation code, and 0x1 refers to skip operations, and 0x2 refers to quiet operation.Byte 9-14 is left filtering classification and specific filtration types, difference classification and type for example discussed herein.At first referring to byte 8, it is a byte length, indicates event action code (for example, skip or quiet).At the possible event classification combination of each shown in the table 2, byte 9-14 is encoded to indicate event classification.When filter method discussed herein is carried out, relatively by the filtration types of specific user's activation and the filtering classification that in byte 9-14, identifies.

Byte 15-34 is the identifier that filters start position.Indication among the byte 15-34 can be used alone or combine and indicate the starting point of filter operation.Byte 35-38 is the identifier of position, filtration end point.Indication among the byte 35-38 can be used alone or combine the sign filter operation terminal point.Byte 15-18 indicates the starting time code of particular filter.Byte 19-34 is also relevant with the starting time that filters, but the more details about the VOBU exact position are provided, and this VOBU exact position may relevant with the starting time code or irrelevant/independence.Byte 35-38 indicates the terminal time code that filters.Byte 39-54 is also relevant with the terminal time that filters, but the more details about the VOBU exact position are provided, and this VOBU exact position is relevant with the terminal time code.Byte 55-63 relates to buffering and fills.

Byte 15-18 be left filter the starting time code (hour: minute: second: frame), the information that the information that byte 15 has hour, byte 16 have minute, byte 17 has the information in second, and byte 18 has the information of frame.In some embodiments of the invention, only utilize the time code information of starting point and terminal point to carry out filter operation.For relatively, time code can be converted to and the identical form of VOBU demonstration time-stamp.A VOBU is made up of frame sequence, is generally 12 to 15 frames.Therefore, can use hour, minute, second kind information indicates VOBU, and can use frame information to indicate frame among the VOBU.Skip in order to carry out, when running into the starting time code the multimedia messages that reads from storage medium, the order DVD player temporarily stops playback, and the frame that is identified from the terminal time code begins playback again then.

In some instances, for example when termination time code and starting time code at a distance of 7.5 when above, code information service time is carried out to skip and can be caused some artificial vestiges.VOBU comprises time code information, and comprises the pointer that points to other VOBU with different granularities.Therefore, artificial vestige depends on the granularity of VOBU pointer.Thereby for time search terminal time code and playback again, DVD player need be read some information and be judged whether the VOBU that is read comprises and the code dependent frame of terminal time from DVD player.Without perceptible artificial vestige, read many VOBUs possibly and time code information is assessed, until identifying the VOBU that has the terminal time frame.Yet,, before the terminal time frame of location, need to read many VOBUs so if skip very longly.In this example, because search procedure is tediously long, solidify so can see of short duration screen.

For fear of or reduce artificial vestige or screen the solidifying of epigraph greatly, indicate the accurate position of target VOBU (this VOBU has the frame relevant with the filtration end point time) on storer possibly.This accurate qualification makes DVD player avoid ferret out VOBU.Similarly, skipping file layout comprises and indicates starting point section number, starting point program chain number, starting point program unit number, starting point unit number, the IP address of VOBU N, the IP address of VOBU N+1, the byte 19-34 of frame number, this frame number is relevant with the beginning skew X frame from VOBU N+1, and VOBU N+1 is relevant with the filter event starting time.Byte 19-34 refers to the different hierarchical informations stipulated in different DVD standards.

VOBU comprises time code and logical block number (LBN).As discussed above, time code is illustrated in the time that the interior compressed multimedia messages of VOBU is wanted playback.Kill file comes the identification division multimedia presentation according to time identification division multimedia presentation by the time code that monitors the VOBUs that reads from DVD.Logical block number (LBN) is the identifier of the specific physical storage locations of storage VOBU information on DVD.The physical location of DVD also can use in kill file to indicate the starting point and the terminal point of part multimedia presentation.In this example, the physical location identifier of kill file and the physical location information of VOBU are compared.Thereby the identifier that filters starting point and terminal point can comprise the IP address information of VOBU N+1, byte 30-33 (this VOBU has the frame relevant with the starting point of filter operation).Filtration based on physical location is different from time code, has fully or avoid greatly the terminal time code information is converted to the advantage of the physical location of DVD.In addition, about to filtering, have superiority based on the filtration of physical location in the multimedia presentation that has on the storer of a plurality of multimedia presentations.In this example, physical location is relevant with specific multimedia presentation, and time value needs extra process to guarantee that it correctly is applied to suitable multimedia presentation.

The granularity that only will have number of frames in the VOBU scope based on the filtration of VOBU information, common 12-15 frame as mentioned above.In order to improve the rank of granularity, can use frame offset value to frame.Frame offset value indication particular frame in the VOBU when filtering beginning also allows the playback controls based on frame.Used VOBU IP address (byte 30-33) and off-set value (byte 34) based on the filtration of VOBU and skew, in addition, off-set value can be taken out from the frame field of time code.

Start from (VOBU N+1) or other the preceding under the VOBU situation skipping, the VOBU (VOBU N) prior to VOBU in F.F. or other operation helps recognition objective VOBU (when skipping beginning).In some F.F.s, not all VOBU retrieves from DVD.When filter operation being used in normal play and in F.F., use, exist one or more VOBU system that makes to identify target VOBU, and do not have when retrieved as target VOBU, thereby can't be used for comparing with kill file.

Starting point unit number filter identifier can be used for the DVD discrete cell that recognition objective VOBU occurs.A unit comprises many VOBUs.Might utilize VOBU in this unit number and this unit to discern the starting point of skip operations.

At first referring to byte 8, it is a byte length, indicates event action code (for example, skip or quiet).At the possible event classification combination of each shown in the table 2, byte 9-14 is encoded to indicate event classification.When filter method discussed herein is carried out, relatively by the filtration types of specific user's activation and the filtering classification that in byte 9-14, identifies.At first referring to byte 8, it is a byte length, indicates event action code (for example, skip or quiet).At the possible event classification combination of each shown in the table 2, byte 9-14 is encoded to indicate event classification.When filter method discussed herein is carried out, relatively by the filtration types of specific user's activation and the filtering classification that in byte 9-14, identifies.

Be stored in the multimedia messages layered arrangement on the DVD.Level comprises chapters and sections information, and it is divided into program chain, and program chain is divided into program unit, and program unit is divided into the unit.The unit is made up of many VOBUs.Therefore, by indicating chapters and sections, program chain, program unit, unit one or more or combination, can accurately locate any specific VOBU, and need not to inquire about previous VOBUs.In certain embodiments, use the VOBU side-play amount of hierarchical information with DVD.The more details of other general information of the level arrangement information of DVD, relevant DVD technology and DVD file layout standard can find in the works " DVD Demystified; secondaddition " of Jim Taylor, mcgraw-hill, inc enjoys copyright 2001,1998, by reference it all is herein incorporated hereby.

Terminal time code and code information correlation time are shown in byte 35-54.Byte 35-38 be left actual event the terminal time code (hour: minute: second: frame), and byte 39-54 is preserved for indicating the terminal point section number, terminal point program chain number, the end address of terminal point program first number, terminal point unit number, VOBU N+P, with the relevant frame number of beginning offset Y frame from VOBU N+P, this VOBU N+P is relevant with the filter event terminal time, and the IP address of VOBU N+P+1.Byte 55-61 is left buffering, so that the descriptor that skip events is filtered is identical with the descriptor specification of audio mute filtration, and byte 62-63 is used for filling.

DVD player or other device, storer, storage medium or Processing Structure, provide after being configured, play, show or DVD is worked, or other audio/video recording apparatus, be associated with some or all features of skipping with quiet file layout, all fall in the scope of some or all contents of the present invention.

In certain embodiments, by skipping specific frame type, can further minimize or eliminate artificial vestige or screen and shake and solidify.The mpeg encoded regulation has I frame, B frame and P frame.The I frame comprises decoding and the necessary information of this frame is provided.On the other hand, the information that is provided in another frame of normal demonstration is provided for B frame and P frame.Similarly, in skipping process, under possible situation, preferably skip the I frame sometimes.Yet, also may skip B frame and P frame, in some instances, in order to demonstrate B frame and P frame, other frame that is necessary to decode, for example I frame.

Figure 13 is the graphic extension of a quiet type filter operation form example.Figure | 14| is the form that identification is used for the file layout example of quiet type filter operation.At first referring to the graphic extension of the quiet operation that Figure 12 provided, the filtration of quiet type as skipping, comprises starting time code and terminal time code.Occur in the quiet VOBUN+1 of starting time coded representation after following VOBU N closely.The actual frame that is associated with the starting time code is the beginning X frame from VOBU N+1.Quiet terminal time coded representation occurs in the VOBUN+P that follows VOBU N+P+1 thereafter closely.The actual frame that is associated with the terminal time code is the beginning Y frame from VOBU N+P.Starting point and terminal time can with the time code (hour: minute: second: frame) identify, perhaps identify with more detailed multilayer DVD information, will do more detailed discussion below, perhaps the combination by them identifies.In this example, intactly play VOBU N and VOBU N+P+1 (comprising Voice ﹠ Video).Play the preceding X frame of VOBU N+1, and the audio frequency of other remainder of quiet VOBU N+1, but broadcast video.The audio frequency of the preceding Y frame of quiet VOBU N+P (broadcast video), and other remainder of broadcast VOBU N+P.All all are muted with the audio frequency of the frame that any VOBUs that falls between VOBU N+1 and the VOBU N+P is associated, and play its video.

The institutional framework of the form of Figure 14 is that its left column is the distribution of file layout byte, then is the byte number indication of every kind of distribution, then is the description of byte indication again.The byte allocation that many quiet types are filtered all with skip type and filter identical.Difference only is discussed herein.It is quiet that byte 15 indicates sound channel.In such an embodiment, be equipped with seven sound channels, in any filtration, will specify the sound channel of combination in any quiet.Each byte all is 8, and numeral 1 refers to quiet, and 0 finger does not have quiet.Be the bitmap between position and the sound channel below: Bit0=front end center channel, Bit1=front end R channel, Bit2=front end L channel, Bit3=rear end R channel, Bit4=rear end L channel, Bit6=rear end center channel, the secondary woofer of Bit6=, Bit7 is not used.Therefore, for 10000000, have only the front end center channel to be muted, and other all sound channels all are not muted.In some multimedia presentations, center channel has more verbal sounds, and other sound channel includes background noise or the like; Therefore, only quiet front end center channel can make potential offensive vocabulary be muted, and keeps other audio frequency.Utilize bigger byte allocation, can be specifically quiet other sound channel.In addition, some byte also is mapped to a plurality of sound channels.For example, in the audio system that includes a plurality of side sound channels, front end right side for example, middle right side and right side, rear end, three all sound channels can be indicated in single position.

Byte 16-38 is relevant with the starting time of incident, and byte 39-61 is relevant with the terminal time of incident, and remaining byte 62-63 relates to filling.At first referring to byte 8, it is a byte length, indicates event action code (for example, skip or quiet).At each possible event classification combination as shown in table 2, byte 9-14 is encoded to indicate event classification.When filter method discussed herein is carried out, relatively by the filtration types of specific user's activation and the filtering classification that in byte 9-14, identifies.It is quiet that byte 15 is exclusively used in sound channel, it allows a particular channel in the quiet A/V demonstration that is equipped with multichannel audio, for example have only center channel to be muted in the 5:1 standard, talking about all at the great majority of film is provided by this sound channel, and other sound channel is not muted.

The starting time code indicates in byte 16-38 with relevant time code information.Byte 16-19 be left actual event the starting time code (hour: minute: second: frame), the information that the information that byte 16 has hour, byte 17 have minute, byte 18 has the information in second, and byte 19 has the information of frame.And byte 20-38 is preserved for indicating the starting point section number, starting point program chain number, the IP address of starting point program unit number, starting point unit number, VOBU N, and with the relevant frame number of beginning skew X frame from VOBU N+1, this VOBU N+1 is relevant with the filter event starting time.Byte 20-38 refers to the different hierarchical informations stipulated in different DVD standards.Byte 39-61 is relevant with the terminal time code of quiet type filter operation, byte 39-42 distribute to terminal time code indication (hour: minute: second: frame), and byte 43-61 distributes to the hierarchical information of specific VOBU, this specific VOBU be associated at quiet particular frame when being about to close.Might use starting point and terminal time code, or the additional hierarchical information that uses is quiet.

Content of the present invention further relates to indexing apparatus and the method that is used to be indicated in multimedia presentation available on the particular memory medium that comprises some filter table.For convenience accessing is at the filter table of many possible multimedia presentations, and the particular memory medium can include hundreds of or several thousand filter table.

At an embodiment, unique identifier is to have formed kill file at each, or has about the multimedia presentation of the information that whether will or not form kill file (table) and generate.Unique identifier generates according to the file specification of multimedia presentation.When DVD had a plurality of, unique identifier can also be based on each face of every DVD or every DVD and is generated.

Each has some filter table storage medium of (that is, being used for the kill file set of specific multimedia presentation), all comprises the master index of the sum tabulation with available unique identifier on filtering table.For each unique identifier, there is independent form, it is provided at the pointer that points in the multimedia scope at the concrete filter table of identifier (if it exists), together with additional information about filter table, comprise that filter table is whether really on storage medium, whether will generate filter table, and the MPAA grade point of this title.

Figure 16 is the file layout about the single unique identifier record of particular filter dish.Filtering table comprises the filter table collection.Set of bytes A is Packet Identifier and error checking and correction byte.Set of bytes B comprises the unique identifier of particular table.Set of bytes C is provided at the interior pointer that points at the concrete filtering information of identifier of scope of dish, comprises the form of Figure 13 and 15.Set of bytes D provides particular filter information.The Bit0 indication filters whether (Bit0=1 is on dish on dish; Bit0=0 is not on dish).Utilize the form of Figure 13, can finish the visit of any particular filter file.

As the function of filtering multimedia presentation headings, can provide visit to any particular filter table.For example, realize visit by the search angle fighter to one or more wrestler's filter table.Sum sign with the filter table that is denoted as the title function.The form that each header list is also arranged simultaneously.According to the title of the multimedia presentation that is associated with particular filter table, with filter table alphabetically (A to Z) and digital ascending order (1 to 9) mode store.This form comprise character (for example, A-Z), numerical character (for example, 0-9), and other character (for example,! , @, # or the like).Therefore, for each character (A, B...0,1...! , @ or the like) and there is an independent form.In addition, each character list all comprises about the filtration quantity of character and indicating, and to the mapping of these first clauses and subclauses of character list.According to this table, system generates the tabulation based on character, for example, is the tabulation of available filter operation on the dish of preface with the letter.In addition, can visit this tabulation according to character entry.Therefore, for example, it is the screen of the tabulation of preface that generation includes with the letter, and by selecting any letter in the alphabet, the user can visit the tabulation of all available filtrations, and wherein the multimedia presentation title that is associated with this filtration is from selected character.

Figure 17 is based on the file layout of the character of look-up table.Set of bytes B comprises the character identifier that is used for particular table.Set of bytes B provides the ASCII information of each character.Therefore, the ASCII value about A that provides in set of bytes B will be provided the form of character " A ".Set of bytes C provides the sum sign of the filter table relevant with specific character.At last, set of bytes D provides sensing first filter table about specific character.For example, about " A ", pointer will point to first filter table about first multimedia presentation that begins from A, its alphabetization in the A of filter table collection.

Time index or sign that filter table on the particular memory medium can further be issued according to filter table.For example, all filter table that will issue in 90 days are changed to highlighted.When new filter table follows hard on the showing of new multimedia presentation (for example DVD goes up the new film of distribution) and during issue, only by the new issue of search, the user just can judge the filter table of showing at new DVD apace and whether produce.For each new showing, all there is one newly to show record (table).Newly show table for every and all provide the pointer of sensing at the filter table information of newly showing.Therefore, the user only can obtain the tabulation at all filter table of newly showing.

In abideing by the various possibility embodiment of content of the present invention, particular filter table can be identified by one or more concordance lists.Figure 18-23 represents concordance list, is used to jointly provide at one or one group of mapping about the filter table of specific multimedia presentation.This mapping can be explained the filter table of different editions neatly, the movie title of different editions, the format change of multimedia presentation, filtered model (for example, time-based filtration and location-based filtration), and other mapping efficient.

At first referring to Figure 19, shown in one perform in a radio or TV programme and show table.This is performed in a radio or TV programme to show and shows to provide one or more bytes (set of bytes B) to come a particular filter file or one group of filter table of identification of multimedia title (for example, " wrestler ").Set of bytes C comprises the issue number of particular filter table.Might have a plurality of filtration report issues at multimedia presentation.Set of bytes D provides the sign of performing in a radio or TV programme catalog number (Cat.No.) about the particular version multimedia title.For example, some films have the version of deciding grade and level, and director's montage version is play DTS or the like, and wherein each all has unique catalog number (Cat.No.).Byte E provides and similarly shows version information, but form is alphanumeric descriptor (for example " Director ' sCut "), and is opposite with catalog number (Cat.No.).Set of bytes F provides the date issued of filter table.Set of bytes G provides at multiaspect and shows and the mapping table (discussion of face Figure 20 as follows) formulated.Set of bytes H provides the aspect ratio information of the specific multimedia presentation that is associated with the particular filter file.

Some multimedia titles may be relevant with some physics cards.For example, some DVD films may be provided in two faces of DVD, or several faces of DVD.If the set of bytes G of Figure 19 is 1, there is not definition about the value of this table so, film is on single card.If the set of bytes G of Figure 19 is 2, the card table more than 2 or 2 is arranged so respectively.Referring to Figure 20, followingly will byte B at length be discussed about Figure 21.Byte C indication is about the DVD title Bale No. by card shown in this table.In most of examples, this value will be 1, represent main movie title.Yet, might formulate filter table about other title on identical card.For example, main movie title (for example, the wrestler) provides other DVD title, and for example the interview to the director also can have a kill file.Set of bytes D is indicated in the type of applied filter identifier in the kill file.As top discussion, in different embodiments of the invention, all can in a particular filter, obtain defined declaration based on the filtration of time code and location-based filtration (because function of VOBU).Similarly, set of bytes D has defined one or more filter identifier types.Set of bytes D also provides the MPAA classification of specific DVD title.Usually the MPAA classification is used according to film.In this example, the MPAA classification is determined according to the DVD title.Set of bytes F provides and filters the date of formation.Set of bytes G provides about the concrete information of shining upon total byte length of all filtrations at particular filter table.Set of bytes H provides the aspect ratio of specific DVD face.

Form as shown in figure 21 provides second unique identifier about the DVD certain surface.If the multimedia presentation of different length version is shown, this unique identifier also can be explained any variation that occurs in this identifier.

When the different titles on the DVD certain surface have unique filtration, provide form as shown in figure 22.Has the form separately that filters title at each.Set of bytes B indicates title.Set of bytes C indicates the program chain number of title.The unique identifier of set of bytes D indication specific title.Utilize this unique identifier, can search for various possible filtrations (for example, search is at the filtration of " wrestler ") or search filtration all sidedly at various titles in the DVD card.Set of bytes E indicates the quantity of the different language version that can use filtration.For example, according to language-specific, bad language may be different; Thereby, may be according to employed language and different based on the filtration of bad language.Set of bytes E provides the mapping of language table quantity, so that for the language of each support separately form is arranged all.

The form of Figure 23 provides the actual pointer that points to the concrete kill file information that is used for multimedia presentation.Rely on this specific multimedia presentation, this pointer is at movie title, card, the DVD title, language, and under the effect of top mentioned other factors to the kill file addressing.The kill file quantity of set of bytes G indication in particular filter table.Set of bytes H is the pointer that points at first kill file of multimedia presentation.

The form of Figure 23 also provides out of Memory.At first, set of bytes B provides the language identifier of kill file.Set of bytes C provides heading message as shown in the figure.Set of bytes D is for pointing to the pointer about the subject description symbol of multimedia presentation.This subject description symbol does not provide filtration, but is provided at the textual description of the various themes that exist in the specific multimedia presentation.For example, when occurring committing suiside in the certain movie, theme " suicide " will present to the user under the effect of subject description symbol.Similarly, if the user has activated filtration, before the beginning playback, this subject description symbol or these subject descriptions symbol will present to the user on display so.Utilize these information, can tell the situation of father and mother better, and make more knowledgeable about whether allowing child watch the decision of this film about this particular film.The subject description symbol provides the information more more detailed than traditional MPAA hierarchy plan.Set of bytes E provides the sign at the available specific filter type of multimedia presentation, and set of bytes F provides the indication of disabled filtration types.Set of bytes G indicates the kill file sum that activates at multimedia presentation.

Expansion of content of the present invention extremely can be provided by the method with filtration fraction content of multimedia (for example multimedia presentation that provides with the DVD form), system and computer program automatically.The embodiment of the invention comprises DVD player, comprises various computer hardwares, television system and audio system, and/or the special use of above-mentioned combination or multi-purpose computer.These embodiment go through in the above.Yet under any circumstance, described embodiment should be considered as example of the present invention rather than limit the scope of the invention.

Embodiment within the scope of the present invention also comprises and is used to load or has the computer executable instructions that is stored thereon or a computer-readable medium of data structure.Such computer-readable medium can be can be by any usable medium of universal or special computer access.For example, rather than restriction, this computer-readable medium can comprise RAM, ROM, EEPROM, DVD, CD-ROM or other optical disc storage, disk storage or other magnetic storage device, perhaps can be used for loading or store shape such as computer executable instructions or data structure required program code means and can be by any other medium of universal or special computer access.Embodiments of the invention are together with plan to filter and with quiet or skip the multimedia presentation of various seasonal effect in time series mode playback, be stored as the computer-readable instruction on DVD.Transmit on (hard-wired, wireless, or hardwired or wireless combination) or when information was provided, computing machine was considered as computer-readable medium with this connection fully when connecting at network or other communication link or computing machine.Therefore, any this connection suitably is called computer-readable medium.Above-mentioned combination equally also is included in the scope of computer-readable medium.For example, computer executable instructions comprises the instruction and data that can impel DVD player, multi-purpose computer, special purpose computer or application specific processor to carry out certain operation or certain group operation.

Although and do not require that the present invention can be configured to the computer executable instructions carried out by DVD player, for example program module.Usually, program module comprises routine, program, object, element and the data structure etc. of carrying out particular task or realizing particular abstract.Computer executable instructions, associated data structures and program module represent to be used to carry out the example of the program code means of method step disclosed herein.So the particular sequence of executable instruction or associated data structures represents to be used to realize the example of the respective action of operating described in the step like this.And the program code means of being carried out by processing unit provides a kind of example of processor technical scheme.

Claims (27)

1, a kind of method of filtration fraction content of multimedia demonstration, described method comprises:

At least one kill file that is limited by indication of filtration starting point and filter operation of access;

Read digital medium information from storage medium, described multimedia messages comprises position reference;

The position reference of more described multimedia messages and the indication of described filtration starting point; And

Respond described compare operation, if but the filtration starting point of at least one filtration fraction of the position reference of described multimedia messages and content of multimedia indication be complementary, carry out filter operation so.

2, method as claimed in claim 1, wherein said filtration starting point indication comprises filters the starting time benchmark.

3, method as claimed in claim 1, the form of wherein said filtration starting time benchmark are hour: minute: second: frame.

4, method as claimed in claim 1, wherein said filtration starting point indication comprises storage location identifier.

5, method as claimed in claim 4, wherein said storage location identifier comprises the memory sector identifier.

6, method as claimed in claim 1, wherein said starting time benchmark comprises the logical block number (LBN) that is associated with video object unit.

7, method as claimed in claim 1, wherein said at least one kill file comprises content designator.

8, method as claimed in claim 7, wherein said at least one content designator be from including violence, property and nude, and language, and select in other the group.

9, method as claimed in claim 1, described digital medium information comprises encoded video and voice data.

10, method as claimed in claim 9, wherein said content of multimedia information comprises video and the voice data through Motion Picture Experts Group's mpeg encoded.

11, method as claimed in claim 9 further comprises the video and the voice data of coding is decoded.

12,, comprise that further broadcast is through the video of decoding and the operation of voice data as the method for claim 11.

13, method as claimed in claim 9 further is included in before the decoding multimedia information, the position reference of more described multimedia messages and the indication of described filtration starting point.

14, method as claimed in claim 1 further comprises the operation that described digital medium information is stored in memory buffer.

15,, further comprise the position reference of comparison multimedia messages in described memory buffer and the operation of described filtration starting point indication as the method for claim 14.

16, method as claimed in claim 1, wherein said storage medium comprises optical storage disc.

17, as the method for claim 16, wherein said optical storage disc is DVD.

18, method as claimed in claim 1, the operation of wherein said execution filter operation comprise the described multimedia messages in the described memory buffer of deletion.

19, as the method for claim 18, the operation of wherein said execution filter operation comprises the described multimedia messages in the described memory buffer of deletion, no matter whether described impact damper comprises the multimedia messages that some needn't filter.

20, method as claimed in claim 1, wherein said kill file further comprise the filtration end point indication.

21, as the method for claim 19, the operation of wherein said execution filter operation comprises the operation that makes the operation of reading digital medium information from storage medium advance to the indication of described filtration end point.

22, as the method for claim 21, the indication of wherein said filtration end point comprises the filtration end point time reference.

23, as the method for claim 22, the form of wherein said filtration end point time reference is hour: minute: second: frame.

24, as the method for claim 22, the indication of wherein said filtration end point comprises storage location identifier.

25, as the method for claim 24, wherein said storage location identifier comprises the memory sector identifier.

26, as the method for claim 21, the indication of wherein said filtration end point comprises the logical block number (LBN) that is associated with video object unit.

27, a kind of multimedia player, it is configured to realize the described operation of claim 1.

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