CN101267554B - Digital video device for playing and recording and its method - Google Patents
Digital video device for playing and recording and its method Download PDFInfo
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- CN101267554B CN101267554B CN 200710088562 CN200710088562A CN101267554B CN 101267554 B CN101267554 B CN 101267554B CN 200710088562 CN200710088562 CN 200710088562 CN 200710088562 A CN200710088562 A CN 200710088562A CN 101267554 B CN101267554 B CN 101267554B
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Abstract
The invention discloses a digital video device for playing and recording and the method thereof. The device and the method thereof can provide real-time playing function in addition to the functions of a traditional digital video recorder, thus to provide better video services; the device comprises a first decoder, a first coder and a processor. The processor includes a first path, a second path and a multiplexor. The second path comprises a second coder and a second decoder. In addition, the device can embody the above function according to the need of users.
Description
Technical field
The present invention relates to a kind of video technique, particularly a kind of use is at image video recording and the digital video apparatus of playing.
Background technology
Digital video application is widely used in the middle of the daily life.In order to provide the user when using video frequency tool, to have more function can support selection; Therefore, digital video (digital video recorder) also produces in response to demand.Digital video is in the application of video playback; Being based on the user has rewinding heavily to see the what one hopes or wishes for of the video of before having viewed and admired; Or be because the user at that time because of thing miss the wonderful picture of part cause sorry, so research and develop out to overcome the device of above-mentioned condition.
But the video that digital video provided now is non real-time (real-time); That is, one section delay (delay) is arranged from the outputting video signal that receives to of incoming video signal between watching to the user; And this section delay be existing digital video apparatus the phenomenon that must have.This is because the present video content that digital video played back all is to read the stored video data that stores from it to play.Because such playing flow; Be actually to go through the vision signal that is received into from the video-audio data source is carried out processed compressed, is stored in the storage device, in storage device, reads the previous data that stored again, it is carried out decompression; Beginning is able to many steps such as broadcast at last; The video content distance that will cause being played back receives between the time point of this vision signal; Have 10 fens significant time delays (possibly reach the spectrum of several seconds even ten several seconds), and still have one section very big gap with " in real time real ".
In the practical application situation, exist the situation that obtains in real time that the user attaches great importance to video, like: on-the-spot motion race, make the first showing of a film before the public, political economy information etc.This looks closely in the field that user individual is paid attention to and different certainly, but target that its institute hopes to reach unanimity really.Therefore, how real-time video playback being provided and having the function that picture reappears concurrently, satisfying avoiding and the requirement of real-time play of requirement that the user reappears for picture, picture leakage, and then better Video service is provided, is an important subject under discussion in fact.
Summary of the invention
One of the object of the invention is to provide a kind of digital video apparatus and method thereof of tool real-time play, can carry out real-time broadcast to video, to solve the above problems.
The present invention provides a kind of digital video apparatus and method thereof of tool real-time play, and it can provide real-time video playback, also with the function of reappearing (playback) and time-out (pause); It can provide real-time video reception to make the user obtain first hand video information with broadcast; Also can optionally reappear the video of being play in the past; Or with video playback suspend in case after a while again row play, so institute's video of watching also can unlimited number of times ground reproduction under certain hour in the past.Hence one can see that, can promote the quality that video uses by the present invention, to solve the above problems; So hold the above, visible this case is not less than the invention that is a novelty.
Description of drawings
Fig. 1 is the sketch map according to the digital video apparatus of one embodiment of the invention;
Fig. 2 is according to one embodiment of the invention, and digital video apparatus 100 is play the processing path sketch map of the video data that is received into;
Fig. 3 is the sketch map that belongs to a plurality of image files of same content;
Fig. 4 is according to the index data structure 400 of one embodiment of the invention and the sketch map of the corresponding relation between the above-mentioned image file;
Fig. 5 is according to one embodiment of the invention, the sketch map of the content that is comprised in the index data structure 400 among Fig. 4; And
Fig. 6 is according to one embodiment of the invention, the corresponding relation sketch map between the video content of being play during operand word video-unit 100 and this a plurality of image files.
The reference numeral explanation
| 100 | |
| 110 | Television decoder |
| 120 | |
| 130 | |
| 140 | The video- |
| 150 | |
| 160 | |
| 210 | The TV decode operation |
<tables num="0002"> <table > <tgroup cols="2"> <colspec colname = "c001" colwidth = "49 % " /> <colspec colname="c002" colwidth="51%" /> <tbody > <row > <entry morerows =" 1 "> 220 </entry> <entry morerows="1"> microprocessor operating </entry> </row> <row > <entry morerows = "1"> 222 </entry> <entry morerows="1"> video pre-processing </entry> </row> <row > <entry morerows = "1"> 224 </entry> <entry morerows="1"> MPEG2 encoding operation </entry> </row> <row > <entry morerows = "1"> 226 </entry> <entry morerows="1"> MPEG2 decoding operation </entry> </row> <row > <entry morerows = "1"> 228 </entry> <entry morerows="1"> selection operation </entry> </row> <row > <entry morerows = "1"> 230 </entry> <entry morerows="1"> television encoding operation </entry> </row> <row > <entry morerows = "1"> 250 </entry> <entry morerows="1"> video data storage </entry> </row> <row > <entry morerows = "1"> 260 </entry> <entry morerows="1"> play operation </entry> </row> <row > <entry morerows = " 1 "> 400 </entry> <entry morerows="1"> index data structure </entry> </row> <row > <entry morerows =" 1 "> 410 <sup > - </sup> 450 </entry> <entry morerows="1"> data </ entry> </row> <row > <entry morerows="1"> 460 </entry> <entry morerows="1"> File Name field </entry> </row> <row > <entry morerows="1"> 470 </entry> <entry morerows="1"> file size field </entry> </row> <row > <entry morerows="1"> 480 </entry> <entry morerows="1"> cumulative file size field </entry> </row> <row > <entry morerows="1"> 510 </entry> <entry morerows="1"> operator interface </entry> </row> <row > <entry morerows="1"> 520 </entry> <entry morerows="1"> remote operator interface </entry> </row> <row > <entry morerows="1"> 530 </entry> <entry morerows="1"> display </entry> </row> <row > <entry morerows="1"> 540 </entry> <entry morerows="1"> timeline bar (time index) </entry> </row> <row > <entry morerows="1"> 550 </entry> <entry morerows="1"> content index </entry> </row> </ tbody > </tgroup> </table> </tables>
Embodiment
Below when carrying out the explanation of embodiments of the invention; Be to be that digital recording control chip (DVR cont roller chip) is that example describes with digital VTR and/or the primary clustering that wherein comprised; But the people who has the knack of this art should understand; Application of the present invention is as limit, other have digital recording/playing function or in have the digital video apparatus of above-mentioned digital recording control chip, like teaching machine top box, DTV, game host or the like; And even other has continuous broadcast to belong to the electronics/media product of demand of a plurality of files of same content, all can adopt method of the present invention.
See also Fig. 1, it shows the sketch map of digital video apparatus according to one embodiment of the invention (for example a digital VTR, a top box of digital machine, a DTV, game host, an aforementioned various device are included control chip or other device or product or its control chip).In Fig. 1; The main composition assembly of one digital video apparatus 100 includes a television decoder (TV decoder) 110, one microprocessor 120, an and television encoder (TV encoder) 130; It is noted that at this; Except above-mentioned main composition assembly; Digital video apparatus 100 more can be according to the difference of application, and includes other constituent components in addition, such as audio frequency output/input interface, Ethernet module, IEEE1394 interface, USB interface, DDR control module, flash memory control module, various perimeter interface module (like GPIO, UART, I
2C) or the like, because these assemblies are not emphasis of the present invention, so will not give unnecessary details at this.
In the present embodiment; Digital video apparatus 100 is coupled to a video-audio data source 140 (audio-visual crossfire that for example sends through network or the TV that comes from local side frequently number) through television decoder 110, comes from a vision signal in video-audio data source 140 with reception.Television decoder 110 is used to for the decoding video signal operation that is received into; Simulation NTSC, PAL and/or the SECAM vision signal that for example will be positioned at fundamental frequency are decoded as the data format of digital YUV4:2:2; In the present embodiment; Television decoder 110 includes four groups 10 analog/digital converter, and includes 2D and 3D comb filter (comb filter) to carry out brightness/chroma separating treatment (YC separation).Microprocessor 120 is coupled to television decoder 110, television encoder 130 and a mass data storage device; A hard disk 160 for example; Microprocessor 120 is used for television decoder 110 decoded vision signals are handled; And hard disk 160 carried out access; So that the processed video signal is sent to television encoder 130, in the present embodiment, microprocessor 120 is made up of one or more Digital Signal Processing (digitalsignal processing) circuit and/or micro-processor interface circuit (such as MIPS).130 of television encoders are coupled to a display unit 150 (the for example flat-paneled display screens of a TV or a display); Be used for for carrying out encoding operation through microprocessor 120 processed video signals; Be various standard electric videos number for example with the video data encoding of digital CR-Y-CB4:2:2 form; Like NTSC, PAL CVBS, S-video signal, individual other YUV or RGB output signal or the like, in this example, television encoder 130 includes six 12 digital/analog converter.
See also Fig. 2, it shows that according to one embodiment of the invention the digital video apparatus 100 among Fig. 1 is play the processing path sketch map of the video data that is received into.In the drawings, represented person is processing or the operation that each assembly carried out among Fig. 1 in each square, will be in following detailed description.At digital video apparatus 100 after the 140 part receiving video signals of video-audio data source; At first can utilize television decoder 110 to carry out a TV decode operation 210; Its content of operation treats that television decoder 110 can be sent to microprocessor 120 parts with the vision signal behind the decode operation after 210 completion of TV decode operation as previously mentioned; 120 of microprocessors can carry out a video pre-process 222 to this vision signal earlier; In general, pre-process (pre-processing) can carry out filtering operation or other image processing operations to vision signal, the noise phenomenon of giving birth to due in the transport process is alleviated or eliminate.And after pre-process; Vision signal then can get into two different processing paths respectively; In first path, can directly be transferred into television encoder 130 parts through the vision signal after the pre-process, to carry out video coding operation 230; Its content of operation as previously mentioned, the vision signal behind the encoding operation then is transferred into display unit 150 parts again and carries out play operation 260.And in second path; Vision signal through after the pre-process can be carried out a MPEG2 encoding operation or other data compression step by microprocessor 224 in addition more equally, so that its data volume is compressed, in order to being stored in hard disk 250 central (being video data storage operation 250); The point on opportunity (following will illustrating) that needs is being arranged; Previous stored packed data then can be read out, by the MPEG2 decode operation 226 that carries out of 120 pairs of microprocessors, to be reduced to the preceding vision signal of compression; Vision signal after will decompressing again is through the processing of video coding operation 230 and play operation 260, to play it.
It is noted that at this; Microprocessor 120 compresses in order in its storage vision signal in second path; Also can add time stamp (time stamp), with the time point that makes things convenient for the every part image of digital video apparatus 100 identifications to be positioned to the vision signal that is stored.The technology of joining day stamp is to have the knack of the knowledge person that the people extensively knows of this technology in vision signal, so its details will not given unnecessary details at this.
As previously mentioned; Embodiments of the invention only can not read out the way that row is play with the video data that in storage device, will before store like traditional processing mode again; Will cause having the user who views and admires real time content (live content) demand must stand on the significant time and delay (even possibly reach the several seconds); Handle path (being aforesaid first path) and provide a vision signal; It not experiencing compressed encoding and operate → write hard disk → read under the situation of hard disk → decompression decode operation, is directly play vision signal output after vision signal is carried out a pre-process; Guaranteeing that the user can watch the video content of " in real time real ", and need not stand because compression coding and decoding operation and extra time that access hard disk spent.Such function under the situation that the user takes notice of for the demand of real-time rating very much (for example view and admire on-the-spot motion race or make the first showing of a film before the public), has remarkable meaning especially.
Embodiments of the invention are except first path that real-time play is provided; Second path that vision signal after the pre-process is compressed and stored still is provided; This is to consider the user except the demand that the rating real time content is arranged, and also has the demand of suspending at any time that rating is play again again and/or carrying out rewinding (rewind) or search (seeking) for the content of having play simultaneously.For instance; Viewing and admiring as a user in the process of a real time content; Suspending rating (for example press and suspend button " PAUSE ") when planning to continue rating after a period of time; If it does not hope to miss the details at any a moment in this content, then can carry out suitable operation (for example press again and play button " PLAY ") to digital image device, this moment, microprocessor 120 promptly can produce a corresponding control signal CTRL; In hard disk 250, read out and through the vision signal behind the MPEG2 decode operation to choose (with multiplexer 228 expression), so that the content of the image that is played back when and then before having suspended.Likewise; When a user has when carrying out the demand of rewinding or search for the content of having play; It can carry out suitable operation (for example press rewinder " REWIND " or operate and fly shuttle knob " SHUTTLE ") to digital image device; This moment, microprocessor 120 promptly can produce a corresponding control signal CTRL; In hard disk 250, read out and through the vision signal behind the MPEG2 decode operation to choose, and according to user's the pairing time point of operation, output has the play content of the orthochronous marking.
Certainly; After above-mentioned various operations; The user also can select to get back to the rating of real time content at any time, as long as in addition suitable operation (for example pressing real-time play button " LIVE "), this moment, microprocessor 120 promptly can produce a corresponding control signal CTRL; Choosing the vision signal of institute's generation after the pre-process, uncompressed and storage once more, and real-time play content once more.
It should be noted at this; Though in the above-described embodiments; TV decode operation 210 and video coding operation 230 are respectively to realize with the television decoder circuit of special-purpose (dedicated) and television encoder circuit; And video pre-process 222, MPEG2 encoding operation, and the MPEG2 decode operation be to cooperate the computing of softwares or firmware program code to realize by microprocessor 120; But those who familiarize themselves with the technology all should understand, and the present invention is as limit, and above-mentioned each item is handled operation and the function that provided all can be come real the work with special hardware circuit, software program code or above the two mix and match.Moreover; Though in the present embodiment; Digital video apparatus 100 includes and is used for analog video signal is converted to the television decoder 110 of digital video signal and is used for digital video signal is converted to the television encoder 130 of digital video signal; But the present invention is not as limit, and the vision signal that is sent in video-audio data source 140 is exactly under the situation of number format originally, and television decoder 110 is inessential assembly; And the display unit 150 in the rear end has digital signal interface and can accept under the situation of digital video signal the also inessential assembly of television encoder 130.As for storage device 160, though be example with the interior hard disk of building or be external in digital video apparatus 100 in the present embodiment, the present invention is not as limit, and other also is the one of which example such as the remote equipment that connects through network.Though again in the present embodiment; Digital video apparatus 100 can carry out image compression to it earlier when vision signal is stored; To save access frequency range or memory space; But the present invention in other embodiments, also can not compress vision signal and direct being stored in the storage device 160 of inciting somebody to action not as limit.
Please consult Fig. 3 again, it is that display digit video-unit 100 is stored in the hard disk 160 or via network or other data source and receives, and belongs to the sketch map of a plurality of image files of same content (like same film).As shown in Figure 3; A video data that belongs to same content is stored as five files in regular turn; Be respectively the rvideo.001 of 2Gbyte ", " video.002 ", " video.003 ", " video.004 ", " video.005 " of 1Gbyte of 2Gbyte of 0.5Gbyte of 1Gbyte; institute's canned data among the video.002 wherein is the latter who on the content time sequencing, continues at video.001, and institute's canned data among the video.003; be the latter who on the content time sequencing, continues at video.002, all the other are by that analogy.So this video data can be stored as a plurality of files, possibly be because employed file system (like FAT32) or employed coding techniques (like DivX) to due to the added restriction of single file size.And these a plurality of files; Possibly be (for example to transmit) when sending promptly to present the form of respective files or when microprocessor 120 carries out compressed encoding through network from data source; Beginning is compressed according to time sequencing and is stored as a plurality of respective files, and is stored in the middle of the hard disk 160.
In an embodiment of the present invention; Digital video apparatus 100 is when receiving or forming the above-mentioned a plurality of image file that belongs to same content; Except being stored in above-mentioned each image file in the hard disk 160; More can produce and store the index data structure (index file) that is used to refer to said image file, as shown in Figure 4, it is to show according to the index data structure 400 of one embodiment of the invention and the sketch map of the corresponding relation between the above-mentioned image file.In Fig. 4; Index data structure 400 includes many data (entry), wherein each data correspond respectively to aforementioned a plurality of image file one of them, for example the first stroke data 410 are corresponding to video.001; Second data 420 is corresponding to video.002, and all the other by that analogy.Please consult Fig. 5 again, it is to show according to one embodiment of the invention the sketch map of the content that is comprised in the index data structure 400 among Fig. 4.In index data structure 400, corresponding to each data, it includes one " file name " field 460, one " file size " field 470 and optionally includes one " accumulated document size " field 480.
Wherein, " file name " field 460 is to be used for going up order according to the time of this video data content, indicates the filename of each respective files, for example in Fig. 5; " file name " field of the first stroke data is " video.001 "; " file name " field of second data is " video.002 ", and the rest may be inferred, and " file name " field of the 5th data then is " video.005 ".The file size that 470 of " file size " fields are used for indicating corresponding file name in each data why; For example in Fig. 5; " file size " field of the first stroke data is that the size of video.001 is 2Gbyte; " file size " field of second data is that the size of video.002 is 1Gbyte, and the rest may be inferred, and " file size " field of the 5th data is 1Gbyte for the size of video.005 then.And if " accumulated document size " field 480 is adopted in selection; Then this field be used for storing since the first stroke data accumulative total file size why; For example in Fig. 5, " accumulated document size " field is stored 2Gbyte, 3Gbyte, 3.5Gbyte, 5.5Gbyte, 6.5Gbyte in regular turn.
In the present embodiment; Digital video apparatus 100 can be in due course a little; For example during initialization or when opening specific file catalogue (file directory), institute's image stored file is searched, according to the result who searches find out have same file characteristic each file (for example in the present embodiment; All beginnings are the file of " video "); Again the relevant information of these files is inserted in its index data structure that produces 400, and index data structure 400 is temporarily stored in (for example a DRAM is not shown among the figure) in the middle of the memory space.Yet the straw line file that this place discloses produces and the method for keeping not is a restrictive condition of the present invention; Other straw line file that the people knew or innovated of haveing the knack of this technology produces and keeps method; Also can be applicable in the middle of the present invention; For example, the form that this index data structure can also a file is stored.Moreover; In the index data structure 400 in the present embodiment except the information that includes each field as stated; More can include again such as reception incomer's information such as signal format (for example its for NTSC or PAL), video bit rate (video bitrate), video length (for example how long or what frames), the usefulness of the search location during in order to broadcast.
Because the digital image device 100 according to embodiments of the invention produces and keeps index data structure as shown in Figure 6 400; Digital video apparatus 100 can be by reading institute's canned data in the index data structure 400; Add simple index computing; The video content that can very promptly find present institute desire to play is positioned at which position of which file in the middle of said a plurality of image file; And then this position of the specified this document that arrives of access, correctly to play this video content.See also Fig. 6, it shows according to one embodiment of the invention, the corresponding relation sketch map between the video content of being play during operand word video-unit 100 and this a plurality of image files.In Fig. 6; Be operation-interface 510, remote operation interface 520 and the display frame 530 of display digit video-unit 200; And in the present embodiment; Operation-interface 510 include control of video play common operating function, for example " broadcasts " (play), " rewinding " (rewind), " fast commentaries on classics " button or other functions such as (fast forward), and on the remote operation interface 520 (a for example remote controller); Except foregoing various operating knobs, more include one can be used for searching out fast the video content segments desiring to view and admire fly shuttle knob (shuttle).In Fig. 6; More shown a time shaft cross bar (time bar) 540; It is noted that time shaft cross bar 540 can be a part that in fact belongs to the play operation interface of digital video apparatus 100, and can be imposed the content time point that drag operation (drag) is play with decision institute desire; Perhaps it also can only be used for representing the time indicator (timeindex) of the video content of being play in present embodiment, and in fact is not shown in the operation-interface.
The video content of playing when the institute desire is by normal play the time (for example playing button when the user presses); Digital video apparatus 100 promptly can continue to keep a time count value; Be used for indicating present in progress content time point; By constantly increasing progressively this time counting value, this video content promptly is able to played back in regular turn.Because institute's data bit stored has a corresponding relation between putting in the play time of this video content and the said image file; As shown in Figure 6, be used as the time shaft cross bar 540 of time index and be used for representing the content pointers (content index) the 550th of the Data Position in each file, have relation one to one.Therefore; This time counting value that digital video apparatus 100 is kept can be scaled pairing Data Position; And again via the index data structure among Fig. 5 400 being searched and comparing; Can determine present in progress time point, its video content is which position in which file in these a plurality of image files.
For instance; If the user presses when playing button; The time point of being play is one hour 25 minutes parts that are positioned at this video content; The conversion of elapsed time point/data volume and afterwards to the search of index data structure 400 and comparison (for example " file size " field 470 is searched and relatively); Can get up till now the Data Position that time point corresponded to and be and be positioned between (2Gbyte+1Gbyte+0.5Gbyte)=3.5Gbyte and (2Gbyte+1Gbyte+0.5Gbyte+2Gbyte)=5.5Gbyte (perhaps; Also can directly search and compare " accumulated document size " field 480), that is be arranged in this file of video.004, and its definite position in this document also can draw according to a reduction formula or proportionate relationship; So, digital video apparatus 100 promptly is able to video data and the broadcast that access correctly is arranged in video.004.And along with video content broadcasts in regular turn; When entering into next file institute data bit stored, puts the time point of being play (for example two of this video content hours very part); After the conversion and search and comparison of same elapsed time point/data volume to index data structure 400; Also can be very promptly the Data Position that time point corresponded to up till now be arranged in this file of video.005, with and accurate location, digital video apparatus 100 likewise is able to access correctly and is arranged in the video data of video.005 and broadcasts.
And when the video content of being play being carried out like operations such as reversing, searches; For example press the cursor on shuttle knob or the towing time shaft cross bar 540 that flies on reversing button, the remote controller 520; More can show benefit of the present invention, especially on rewinding of striding file or seek operations.In previous identical example; The time point of promptly being play is positioned at one hour 25 minutes parts of this video content; And its pairing Data Position is arranged in this file of video.004; Result as if this time reversing or seek operations; Make the time point of being play drop on one hour five minutes parts of this video content; Then after the conversion of elapsed time point/data volume and the search and comparison to index data structure 400, equally can be very promptly the Data Position that time point corresponded to up till now be arranged in this file of video.003, with and accurate location, like this then digital video apparatus 100 likewise is able to access correctly and is arranged in the video data of video.003 and broadcasts.It should be noted that especially; In in this example the reversing or seek operations, the video data of 100 accesses of digital video apparatus is former to be taken out from video.004 before this, then became from video.003 finally and took out; So stride file and get the operation of depositing video data; The file of striding of especially reverse (backward) is got the operation of depositing video data, in conventional practice, belongs to and can't reach, and still passes through the generation and the use of the index data structure that institute discloses and explains in the embodiments of the invention; Then only need some simple arithmetic operations of searching file content and comparison, can reach easily.
It is noted that at this; Though in the above-described embodiments; Index data structure 400 is the information of storage file size (or accumulated document size), but those who familiarize themselves with the technology also should be understood that the present invention is not as limit; Can also store the mode of the time stamp that corresponds to the initial and/or termination locations of file content in the index data structure 400 and handle, also can reach the object of the invention.Moreover; Owing in index data structure 400, come arrangement information corresponding to the mode of a file name and file size (or time stamp) thereof with each data; So in the digital image device that uses index data structure of the present invention; A plurality of image files that belong to same content (a for example same film) that it is stored; Its filename need not have any specific stroke or lexicographic order, and digital video apparatus 100 only must can find correct image file through the search to index data structure 400.
In sum; Exposure according to embodiments of the invention; Digital image device only must produce and keep a very little comparatively speaking index data structure; What can reach no seam (seamless) strides search of file video and play operation, and can be as prior art, causes the user to pause or audiovisual experience that interruption etc. is unhappy or can't stride the problems such as reverse search or play operation of file striding must stand when file is play.In addition; Use digital image device like the described index data structure of embodiments of the invention; The application software that cooperates with it also can be designed to only this index data structure managed and show, thus, it is unit (content-based) that the user just only need touch with " content " in the interface of this kind application software; But not be the information of unit (file-based) with " file ", this will make the interface management of application software more succinctly reach intuition.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (16)
1. digital video apparatus comprises:
One first decoder is used to receive an incoming video signal, and is decoded as once the converting video signal;
One processor is used for handling and is somebody's turn to do through the converting video signal, and it is carried out access action in a memory cell; And
One first encoder is used to receive from this of this processor output through the converting video signal, and the back output of encoding;
Wherein, this processor comprises:
One first path is used for receiving through the converting video signal, and exports in real time;
One second path is used for receiving through the converting video signal, and the back storage of encoding, and output after just the data of being stored being decoded after waiting to launch; And
One multiplexer is used to receive a control signal and should be through the converting video signal, and uses in this first path and this second path is selected one and exported this first encoder to,
Wherein, this second path comprises:
One second encoder, being used for receiving should be through the converting video signal, and encodes and produce once encoded video signal and deposit this memory cell in; And
One second decoder is used to receive this control signal, then to required this of this memory cell acquisition through encoded video signal, and be decoded as this through converting video signal rear feed to this multiplexer,
Wherein, this processor is stored as a plurality of files with this of same video data through encoded video signal in regular turn, and produces the index data structure that is used to refer to said a plurality of files; And
This processor utilizes this index data structure between said a plurality of files, to carry out jointless search and play operation.
2. device as claimed in claim 1, this processor more comprises:
One pre-process unit is used for this is carried out filtering operation or other image processing operations through the converting video signal, the noise phenomenon of giving birth to due in the transport process is alleviated or eliminate.
3. device as claimed in claim 1, wherein, before this second path was selected output, the output signal came from this first path.
4. device as claimed in claim 1, wherein, after this second path was selected output, the output signal came from this second path.
5. device as claimed in claim 1, wherein, this memory cell is a plurality of hard disks, random access memory.
6. device as claimed in claim 1, wherein, this index data structure includes the file name of said a plurality of files.
7. device as claimed in claim 1, wherein, this index data structure includes the file size of said a plurality of files.
8. device as claimed in claim 1, wherein, this index data structure includes the accumulated document size of said a plurality of files.
9. device as claimed in claim 1, wherein, this index data structure can provide this processor to search and compare one first video file in these a plurality of files of being desired to read to determine and the primary importance in this first video file.
10. device as claimed in claim 1, wherein, this index data structure can provide this processor to search and compare the order and the position of follow-up a plurality of files of desiring to read of this first video file in these a plurality of files of being desired to read to determine.
11. a digital video method in order to video is play and recorded a video, comprises:
Receive a vision signal;
In first path, export this vision signal in real time; This vision signal of coding is through encoded video signal in second path; This of same video data is stored as a plurality of files in regular turn through encoded video signal; And produce the index data structure that is used to refer to said a plurality of files, should be with storage through encoded video signal;
Come static this vision signal picture according to a control signal;
Stop the running of output in real time of this vision signal according to this control signal;
Decide according to this control signal and to carry out reproduction mode or to keep time-out, wherein, the output that reproduction mode is carried out in decision be real-time video output and by stored this in export encoded video signal decoding back both one of; And
After the encoded video signal decoding, in the output, utilizing this index data structure by this that stored between said a plurality of files, to carry out jointless search and play operation.
12. method as claimed in claim 11, wherein, this index data structure includes the file name of said a plurality of files.
13. method as claimed in claim 11, wherein, this index data structure includes the file size of said a plurality of files.
14. method as claimed in claim 11, wherein, this index data structure includes the accumulated document size of said a plurality of files.
15. method as claimed in claim 11, wherein, this index data structure can provide one first video file and the primary importance in this first video file in these a plurality of files of searching and relatively being desired to read with decision.
16. method as claimed in claim 11, wherein, this index data structure can provide this processor to search and relatively, continue the order and the position of a plurality of files of desiring to read after this first video file in these a plurality of files of being desired to read to determine.
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| CN 200710088562 CN101267554B (en) | 2007-03-16 | 2007-03-16 | Digital video device for playing and recording and its method |
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|---|---|---|---|---|
| CN2626156Y (en) * | 2003-01-30 | 2004-07-14 | 广州市三洲数码科技有限公司 | Video signal conversion device |
| CN1794799A (en) * | 2005-12-27 | 2006-06-28 | 中电赛龙通信研究中心有限责任公司 | Program recording device and recording method |
| CN1863284A (en) * | 2005-05-09 | 2006-11-15 | 明基电通股份有限公司 | Player and playing method |
| CN1882941A (en) * | 2003-09-25 | 2006-12-20 | 索尼株式会社 | Recorder, reproducer, method for managing file, program of method for managing file, and recording medium containing program of method for managing file |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626156Y (en) * | 2003-01-30 | 2004-07-14 | 广州市三洲数码科技有限公司 | Video signal conversion device |
| CN1882941A (en) * | 2003-09-25 | 2006-12-20 | 索尼株式会社 | Recorder, reproducer, method for managing file, program of method for managing file, and recording medium containing program of method for managing file |
| CN1863284A (en) * | 2005-05-09 | 2006-11-15 | 明基电通股份有限公司 | Player and playing method |
| CN1794799A (en) * | 2005-12-27 | 2006-06-28 | 中电赛龙通信研究中心有限责任公司 | Program recording device and recording method |
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