CN1735184A - Method and device for making personal digital product have video and display digital audio/video multimedia - Google Patents
Method and device for making personal digital product have video and display digital audio/video multimedia Download PDFInfo
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Abstract
This invention provides a method to make individual digital product has recording and displaying digital AV multimedia, which comprises: providing modulated intersection video and analog audio information for demodulation and inverse intersection; taking the A/D conversion to obtain a digital audio; then, taking inverse intersection for video and digital audio process to obtain compressed AV signal; then synchronizing the signal; finally, outputting the synchronized compression video and audio to a process unit to decide whether to record or display.
Description
Technical field
The present invention handles the multimedia method of digital audio-video about a kind of with the individual digital product, and particularly relevant a kind of individual digital product that makes has video recording and demonstration multimedia method of digital audio-video and device.
Background technology
Under the situation of Information technology prosperity at present, products such as analog TV, sound equipment and Video Recorder are all replaced by digital product, for example PC (Personal Computer gradually; PC), notebook computer (Laptop or Notebook; NB), personal digital assistant (Personal DigitalAssistant; PDA), digital camera (Digital Video Camera; DVC) and digital camera (DigitalStill Camera; DSC) and high-res TV (High Definition Television; HDTV) etc., these digitized devices have been present very general electrical home appliances simultaneously.
The formation of digitrend is because numerical data not only is convenient to preserve, but also can adds powerful " compression " function, transinformation content is strengthened, for example; An analog television channels can only be broadcast a program, and digital TV channel can be broadcast three, four or Polymera more, add digitized signal and can also increase a lot of signal processing modes, therefore it is flourish to make that the application of multimedia (Multimedia) is able to, and this wherein puts with audio-visual group and the display system main flow of consumption market development at present especially.So-called multimedia (multimedia) is meant that media content comprises information such as literal, chart, image, sound and animation, and presenting of information is to express simultaneously with the media content more than at least two kinds, so be referred to as multimedia messages.
In addition, adopt digitlization to also have a chief reason, for analog signal through in the transmission and processing process, can accumulation many " noises " can't remove, and " digital signal " can be removed these " noises ", keep original signal " quality " and " totally ", so the quality of picture nature " very perfect ".For example; Analog phone before several years, when returning Taiwan abroad, because of " noise " is too big, sounding can be smudgy, and noise is very big, must shout and could converse.Now because telephone signal " digitlization ", sound is clear just as making every the neighbour, so when video industry when simulation is transferred to numeral, have the function that more and more many video processing equipments (video processing equipment) also must be transferred to analog signal digital signal.
Moreover, standard (standard) with present simulated television, in respect of NTSC system (Nation Television Systems Committee, NTSC) and Phase Alternate Line (PhaseAlternation Line, PAL) dual mode.In Japan or the U.S. is to adopt the NTSC standard, and it is to constitute a picture or be called picture (frame) with 525 scan line, just with 1 second 30 picture (picture) speed repeat to show.But 525 scan lines that constitute a picture are not that single pass is just finished, but reappear a picture in interleaved mode.In other words, after the 1st scan line finished, be right after and what come is not the 2nd line, but carry out with 3,5,7 order, until the 525th line, and then get back to the 2nd line, repeat with 4,6,8 order then, therefore in fact obtaining smooth and picture clearly, is to be gone to constitute by the mode of odd number, even number, odd number, editor (format) mode that Here it is " interlacing scan " is also referred to as " interlacing (Interlacing) ".
Interlace video signal (Interlaced Video Signal) is made up of two visual fields (field), and wherein each visual field only comprises the odd lines (odd lines) of image or the even lines (even lines) of image.In the process of carrying out image capturing (image capture), television camera (camera) can be in the odd lines of a moment (on instant in time) image output, then after 16.7 milliseconds (milli-seconds), and the even lines of image output again.This can produce the displacement (temporal shift) of a time between the process of the odd lines of image output and even lines.Yet this mode is to obtain a good picture for still frame, but for having mobile picture, can produce the image of zigzag (serration) at the edge of image and the difficulty that thickens is distinguished (blurred).In addition, because odd field and even field are made up of the scan line (i.e. 262.5 lines) of half, therefore each odd field and even field have only half resolution (resolution) of original image, and each odd field and even field are to show with 1/60 second speed.Such picture is with human eye, though be unlikely to allow the vision of human eye feel not nature (motionartifacts), picture can feel that just scan line is thick in case amplify, even can feel fuzzy pictures.
Aforementioned these in " interlacing " or " interlacing scan " described shortcoming, can solve now by the technology of a kind of being called " sequential scanning (progressive scan) "." sequential scanning " is continuously to 525 lines with 1,2,3, once order is depicted all scan lines, and the speed with 1 second 60 lattice picture is reappeared, therefore its sweep speed is the twice of " interlacing scan ", thereby picture is to go up display frame with 525 scan lines at display (monitor), so picture very thin and clear, this is " sequential scanning " biggest advantage, and therefore advanced at present audio-visual devices has adopted this mode to come scanner uni to show mostly.
Yet, the signal of video signal of existing NTSC system, up to the present, the mode that is still employing " interlacing " is main, therefore if the picture that interlacing is formed is when the display system of " sequential scanning " shows,, directly goes up to dial and put and when showing at high-res TV (HDTV) for example with a DVD film of compiling via interlacing, therefore the picture that then can only show odd field and even field can make the resolution variation (because of having only half resolution of original image) of image.For solving this problem, just must use the technology of " release of an interleave (De-interlace) " to overcome, in other words, " release of an interleave " is exactly a kind of method that interlacing (interlacing) is converted to sequential scanning (progressive).For example standard resolution TV (Standard Definition TV:SDTV) is converted to high-res TV (High DefinitionTV; HDTV) time, it is that scanning linear is promoted to 720 orders and is scanned (720p) by 480 staggered scan (480i).The conversion that editor promotes reaches sampling (resampling) two steps by release of an interleave (De-interlacing) again and forms, wherein release of an interleave (De-interlacing) is complicated in two steps, this is because odd lines and even lines staggered scans image by time ground displacement, if and merge is unmodifiable, then this can cause image to aim at and produce error (misalignment).This image is aimed at the generation error and must be corrected, so that can be created in the order image (progressive image) that visually can make the people satisfied.When this image of revising after aiming at generates, then it is removed to be woven into image through the program of sampling again.
Though use the technology of release of an interleave interlacing (interlacing) system can be shown in sequential scanning (progressive) system that the problem of the resolution deficiency that produces solves, but the situation of can not ignore is arranged equally, the image of playing is always moving, if ignore this point, actually odd field is overlapped with even field, then also can be identical with foregoing problems, can obtain distinct image to the static image part, but the part to dynamic image then equally has fuzzy and factitious phenomenon, so high image quality just can not show.So release of an interleave (De-Interlacing) handle technical, have two kinds of basic algorithms (algorithms) to select, promptly do not have motion compensation (non-motion compensated) and motion compensation (motion-compensated).
1. there is not motion compensation release of an interleave algorithm (De-Interlacing Non-Motion CompensatedDe-Interlacing Algorithm):
The release of an interleave algorithm of no motion compensation (non-motion compensated) has two kinds of linear transformation technology the most basic to be called braiding (Weave) and swing (Bob) fast, and wherein braiding (weave) is more a kind of in two kinds of methods.
Braiding (weave) is exactly with two input visual fields overlapping (overlaid) or is woven (woven) together, to produce an order picture (progressive frame).Yet this technology though district's image of different visual fields can be aimed at (alignment) fully, thereby can obtain a clear release of an interleave image when handling static image; But, when edge at the processing movable image, but can demonstrate tangible zigzag (serrations) or burr (feathering), this is because movable image can produce displacement along with the time, so when odd number image and even number image are woven into a picture, will be because of between odd number image and the even number image time displacement being arranged, thereby when odd number visual field and even number visual field are woven together, produce image alignment error (misalignment).So zigzag or burr can occur, and form ambiguous picture, this tangible zigzag or the situation of burr are not received under the broadcasting or the television environment of specialty.
In addition, because a wherein visual field (for example only accepting the image of even lines) of input image is only accepted in swing (Bob), another visual field (being the image of odd lines) then is (discarded) that is dropped, so image gets in vertical direction, and resolution is big or small can be reduced to 720 * 243 from 720 * 486.This has only the image of half resolution, then removes to fill up the void space (voids) of another line by adjacent scanning lines, so that the shadow interpolation is got back to 720 * 486.Advantage of this calculation process is that it can overcome not the image of action (motionartifacts) naturally and the computation requirement of minimum is arranged.And its shortcoming be the vertical resolution of input image through still having only half of original image after the interpolation, therefore the thin portion resolution of order image has just reduced.
2. motion compensation release of an interleave algorithm (Motion Compensated De-InterlacingAlgorithm)
Best de-interlacing methods is motion compensation (motion compensation).This technology now the priority of use DTV that advances SDTV (Standard Definition TV) and high fax (hi-fi) edit in the conversion.The method of motion compensation deinterleave be measure between (inter-field) amount of movement, in the time, the pixel displacement in the two time shifting visual fields is formed to the common ground then.The displacement that determines each pixel is to move via reference to estimate (motion estimation), and wherein the affirmation of motion-vector (motion vector) and tracking are to another visual field from a visual field.This is a kind ofly typically to carry out with the program of block coupling (block-matching), and typical block size (block size) is from 4 * 4 to 8 * 8 pixels.Using these block connotations is to have only the block of pixels of these relative sizes can be shifted to correct locus in the time.
And in the dynamic video compress technique, at present all use the compression method of MPEG to carry out, so-called MPEG promptly is the abbreviation of Motion Pictures Experts Group (Motion Picture Experts Group), and its editor's specification is divided into video (Video), audio frequency (Audio) and system (System) three parts.Along with the increase of demand, MPEG also constantly has the standard of a new generation to occur, as MPEG1, MPEG2, MPEG4, MPEG7 etc.
In general, in a dynamic film of playing continuously, relevance of picture is very high before and after it, therefore in a succession of dynamic raw video sequence, have (spatial) correlation in space and (temporal) correlation of time between image before and after it, and video compression (video compression) is exactly according to this two classes correlation of data, removes the data of repeatability (redundancy) and reaches the purpose of compression.Remove the method for the repeated data on the space, normally according to the characteristic of human vision, add quantification (Quantization) process with space conversion (for example: Discrete Cosine Transform or Wavelet Transform), to belong to the part filtering of high frequency, to reach compression effects.As for removing temporal repeatability, then be principle with moltion estimation (Motion Estimation), will go up the data that repeat the time and find out removal then, to reach the purpose of compression.And in MPEG compression (or being called coding) process, be to have adopted 3 kinds of different modes to compress each picture, promptly I picture (Intra-frame), B picture (Bi-directional frame) are with P picture (Predicted frame).Wherein the I picture do not need to consider and other pictures between relation, what it was stored is a complete picture; The P picture be I picture with the front as the reference image, have the part of repetition just no longer to store in the picture, only store different place; The principle of B picture is identical with the principle of P picture, and unique difference is that the B picture can be with reference to the I picture or the P picture of front, also can be with reference to the P picture of back.
As for when the decompression of image (during playing video), then be to decode earlier (decoding) with the program opposite with coding, carry out inverse quantization (Inverse Quantization then; IQ) and anti-discrete cosine conversion (Inverse DCT; IDCT), the signal of frequency domain (frequency domain) is converted to again the signal in space, so signal can be reverted back to the preceding data flow (data stream) of compression, after then these data flow being done to integrate, deliver to image reconstruction buffer (video reconstructed image buffer) or claim and restore into original picture according to the data that receive at last in the video image buffer (video image buffer).
By preceding described, when obtaining the release of an interleave formula dynamic image of a high image quality, must therefore can expend great calculation resources through very complicated image processing process as if desire.So when using PC (PC for example; When NB) playing the digital audio-video multimedia image of high image quality, CPU (the Central Processing Unit in the PC; CPU) resource of wasteful part removes to handle the release of an interleave of image, and makes PC can't carry out other function.Therefore, the design in PC (PC) system in the past, big city adopts the release of an interleave processing computing of carrying out the alternating expression image with fairly simple algorithm, and for example, the release of an interleave that can only use the swing calculation to carry out dynamic image is handled.Thus, though can in PC (PC) system, view and admire the image of digital multimedia, on image quality, and the image of digital multimedia is had greatly improved.In addition, owing to, will therefore can make the frequency range of image increase originally through the image reduction of overcompression through the image after the release of an interleave processing, and can't export display to via the output bus of PC, show and the image behind the release of an interleave can only be directly connected in the display.Therefore, for the image energy that makes release of an interleave passes through personal computer system, show and record the function of digital video programs, just the image frequency range behind the release of an interleave must be reduced, could be with the output bus output of the image energy behind the release of an interleave via personal computer system.
Summary of the invention
Foregoing problems is to handle and to show the digital video of high image quality on the individual digital product, therefore the present invention proposes a method and the hardware structure that to take into account the video high image quality simultaneously and reduce the system resource requirements of individual digital product, as the perfect solution that following advanced individual's digital product play multimedia video is provided.So, except can on personal computer system, presenting the digital audio-video multimedia with more perfect, higher resolution, and can be stored in the hard disk (Hard disc) of PC with less space with some TV programme through after the processing of compressed encoding.
Therefore, a purpose of the present invention is to propose a kind of individual digital product that makes to have video recording and the multimedia method of demonstration digital audio-video, it is to handle the multimedia system of digital audio-video by one, make personal computer system can manifest the characteristic of the high image quality of digital multimedia, with the calculation resources on effective reduction personal computer system.
Another main purpose of the present invention is to propose a kind of individual digital product that makes to have video recording and the multimedia method of demonstration digital audio-video, it is to handle the multimedia system of digital audio-video by one, make broadcast TV program after the process processing of compressed encoding, can be stored in the hard disk of PC with less space, the function that personal computer system is had prerecord and play.
The present invention's main purpose again has video recording and the multimedia device of demonstration digital audio-video at a kind of individual digital product that makes of proposition, it can be combined into different processing units one digitized Application Specific Integrated Circuit, not only be convenient to and the personal computer system integration of interface, can also be able to effectively reduce the complexity of design and the cost of manufacturing.
According to above-described purpose, the present invention proposes a kind of individual digital product that makes and has video recording and the multimedia method of demonstration digital audio-video, comprise: the information that the terleaved video and an analogue audio frequency of a modulation at first are provided, handle so that carry out separate modulation and the release of an interleave of this terleaved video, to convert a release of an interleave video to.Carry out the digital translation of analogue audio frequency simultaneously, to obtain a digital audio.Then carry out the compression of release of an interleave video and digital audio and handle, with release of an interleave video and the digital audio that obtains to handle once overcompression.Follow again, carry out release of an interleave video and the digital audio of Synchronous Processing, to obtain a synchronized compressed video and a compressed audio through overcompression.Export at last and show this synchronized compressed video and compressed audio.
The present invention proposes a kind of individual digital product that makes simultaneously and has video recording and the multimedia device of demonstration digital audio-video, comprise: a compression of digital video unit, be that dynamic video with a release of an interleave compresses processing, to reduce the employed frequency range of this release of an interleave dynamic video.One digital audio compression unit compresses processing with a digital audio, to reduce the employed frequency range of this digital audio.One video/audio synchronous processing unit is carried out Synchronous Processing with the release of an interleave video of this compression and the digital audio of this compression, obtaining a synchronized compressed video and a compressed audio, and output this synchronized compressed video and compressed audio.In addition, this device also can comprise a decoding digital video unit, a release of an interleave processing unit, one audio frequency simulation/digital translation unit; And an output bus interface unit, so that this synchronized compressed video and compressed audio output, to show or to store this synchronized compressed video and compressed audio.
Below with reference to accompanying drawing preferred embodiment of the present invention is elaborated, with clearer understanding purpose of the present invention, characteristics and advantage.
Description of drawings
Fig. 1 is a flow chart of the present invention.
Fig. 2 is the function block schematic diagram of the specific embodiment of the invention.
Fig. 3 is the function block schematic diagram of the specific embodiment of the invention.
Fig. 4 is the function block schematic diagram of the specific embodiment of the invention.
Embodiment
Because the staggered processing (Interlacing) that is used among the present invention, release of an interleave are handled relevant technology and method such as (De-interlacing) and MEPG compression standard, in prior art, describe in detail, so the description for staggered processing, release of an interleave processing and MPEG compress technique does not comprise its entire flow in the following explanation.Existing coding (encoding) and decoding (decoding) technology that the present invention is simultaneously continued to use the MPEG compress technique are only done quoting of emphasis formula at this, to help elaboration of the present invention.And the calcspar in the following literary composition, also not draw according to actual relevant position and complete connection layout, its effect is only being expressed the schematic diagram relevant with feature of the present invention.
In view of the above, the present invention at first proposes a kind of individual digital product that makes and has video recording and the multimedia method of demonstration digital audio-video, comprise: the information that the terleaved video and an analogue audio frequency of a modulation at first are provided, handle so that carry out separate modulation and the release of an interleave of this terleaved video, to convert a release of an interleave video to.Carry out the digital translation of analogue audio frequency simultaneously, to obtain a digital audio.Then carry out the compression of release of an interleave video and digital audio and handle, with release of an interleave video and the digital audio that obtains to handle once overcompression.Follow again, carry out release of an interleave video and the digital audio of Synchronous Processing, to obtain a synchronized compressed video and a compressed audio through overcompression.Export at last and show this synchronized compressed video and compressed audio.
The present invention then proposes a kind of individual digital product that makes and has video recording and the multimedia device of demonstration digital audio-video, comprise: a compression of digital video unit, the dynamic video of one release of an interleave is compressed processing, to reduce the employed frequency range of this release of an interleave dynamic video.One digital audio compression unit compresses processing with a digital audio, to reduce the employed frequency range of this digital audio.One video/audio synchronous processing unit is carried out Synchronous Processing with the release of an interleave video of this compression and the digital audio of this compression, obtaining a synchronized compressed video and a compressed audio, and output this synchronized compressed video and compressed audio.In addition, this device also can comprise a decoding digital video unit, a release of an interleave processing unit, one audio frequency simulation/digital translation unit; One output bus interface unit, so that this synchronized compressed video and compressed audio output, to show or storage this synchronized compressed video and compressed audio.And, being arranged in a processing unit of this individual digital product, it has this synchronized compressed video of control and the video recording of compressed audio or the function of demonstration.
The present invention reintroduces a kind of PC that makes simultaneously and has video recording and the multimedia system of demonstration digital audio-video, comprising: a decoding digital video unit, and the terleaved video of a modulation is separated modulation handle, to obtain a dynamic video.One release of an interleave processing unit carries out release of an interleave with this dynamic video and handles, so that this terleaved video converts the dynamic video of a release of an interleave to.One audio frequency simulation/digital translation unit is carried out digital translation with an analogue audio frequency, to obtain a digital audio.One compression of digital video unit compresses processing with the dynamic video of this release of an interleave, to reduce the employed frequency range of this release of an interleave dynamic video.One digital audio compression unit compresses processing with this digital audio, to reduce the employed frequency range of this digital audio.One video/audio synchronous processing unit is carried out Synchronous Processing with the release of an interleave video of this compression and the digital audio of this compression, to obtain a synchronized compressed video and a compressed audio; One output bus interface unit should synchronized compressed video and compressed audio output, to show this synchronized compressed video and compressed audio.And a central processing unit (CPU) that is arranged in this individual digital product, it has this synchronized compressed video of control and the video recording of compressed audio or the function of demonstration.
Next be detailed description of the present invention, and please refer to Fig. 1 to Fig. 4 that wherein Fig. 1 is the flow chart of the specific embodiment of the invention; Fig. 2 to Fig. 4 then is the functional block diagram of the specific embodiment of the invention.
At first, by Fig. 1 method of the present invention is described.With present multimedia broadcast, it can utilize the CD-ROM player in VCD/DVD player (player), the PC or propagate via cable television program (Cable TV Programs) and broadcast TV program modes such as (Broadcasting Programs), and the data content of its propagation has comprised through two kinds of the terleaved video (modulatedinterlacing video) of modulation and analogue audio frequencies (analog audio).Therefore for people's numeral device one by one, its input promptly receives the terleaved video and the analogue audio frequency of this compression, shown in step 110.Then promptly carry out the processing of the digitized audio frequency of the video decode of step 120 and step 150 simultaneously.
With video, step 120 is that received modulation terleaved video is separated modulation, makes the modulation terleaved video of input can be digitized into the dynamic image that a continuous staggered visual field (interlaced field) is compiled.Then, by step 130 decoded dynamic image is carried out release of an interleave and handle (De-interlacing), for example utilizing block coupling algorithm (block matching algorithm) is a series of release of an interleave processing of carrying out of unit (block-base) with the block, so that the staggered video conversion of input becomes the image of release of an interleave.Follow again, pair finish the processing that dynamic image that release of an interleave handles compresses and encodes by step 140, with the shared frequency range of reduction dynamic image, and its compression that can adopt and coding method comprise MPEG series and dynamic Joint Photographics Expert Group JPEG (Motion JointPhotographic Experts Group; Motion JPEG) plurality of specifications (specifications) such as.
And with regard to the analogue audio frequency that receives, its be earlier through step 150 with the analogue audio frequency digitlization, and then digitized audio frequency compressed with the specification of audio and encode through step 160.For example, can use MPEG-1 Layer1,2,3, MPEG-2, AC3 or bad adaptability divide pulse wave coding modulation standard (Adaptive Differential Pulse Code Modulation; Specification such as ADPCM).Because the ratio of video compression is different with the ratio of audio compression, therefore need will be after overcompression video and audio frequency transfer to step 170 and reach mixings (synchronized and multiplexed) processing synchronously, its objective is standard according to compression and coding, video and audio frequency are carried out the mixed processing of a certain ratio, so that obtain a synchronized imaging data stream (a data stream of the synchronizationimage).
With regard to the MPEG compression standard, the compression ratio of its video must be greater than the compression ratio of audio frequency, therefore the video bit rate (video bits rate) that will compress is divided by the audio frequency bit rate of compressing (audiobits rate), and then obtains an integer in the mode of unconditional carry.Then, promptly carry out the synchronous and mixed processing of video and audio frequency, so that obtain the imaging data stream of a synchronized compressed video and compressed audio with the ratio of this integer.Whether decision is delivered to step 180 with this synchronized imaging data stream and is stored in the memory more at last, or is directly delivered in the display by step 190 and to show.
Then, be that example is illustrated the specific embodiment of the present invention with the personal computer system, and please refer to shown in Figure 2ly that it shows of the present inventionly makes PC have video recording and show the multimedia system 20 of digital audio-video.System 20 can receive from the CD-ROM player in VCD/DVD player (player), the PC or via the analog video and the analogue audio frequency of the modulation in cable television program (Cable TV Programs) and the broadcast TV program circulation ways such as (Broadcasting Programs), is handled by decoding digital video unit 21 and audio frequency simulation/digital translation unit 23 respectively then.When decoding digital video unit 21 receives behind the terleaved video of crossing modulation, promptly this modulation video is separated modulation (demodulation), after modulation and digitlization are separated with the analog video of modulation in decoding digital video unit 21, can obtain interlaced fields.Carry out the release of an interleave processing of picture immediately by release of an interleave unit 22, so that the image frame of being formed with terleaved video converted an order picture (progressiveframe) to originally, and its employed de-interlace method can adopt a method decided at the higher level but not officially announced in advance (a default method) to carry out the release of an interleave processing, for example interior (default) fixed use weaves algorithm (WeaveAlgorithm) in advance, also can change the method that release of an interleave is handled by external control interface (not shown).Follow again, compress processing, for example use the compression standard of MPEG2 to carry out the compression of order image by 24 pairs of compression of digital video unit order picture, with the order image that obtains to handle once overcompression, and deliver to synchronously and mixed cell 26 medium pending.
When digital video is carried out the release of an interleave and compression process of a succession of processing, system 20 provided by the present invention also transfers to the analogue audio frequency that receives audio frequency simulation/digital translation unit 23 and carries out the digitlization of audio frequency, so that obtain a digital audio, then by digital audio compression unit 25 with standard with respect to video compression, digital audio is compressed processing, for example digital audio is compressed processing with the audio compress standard of MPEG2.Then, also deliver to synchronously and mixed cell 26 medium pending.
Because in the existing compression standard, to the compression factor difference of video and audio frequency, therefore must be after the video of overcompression and audio frequency reach mixed processing synchronously, just can transfer to make multimedia audio-visual synchronously so that can play or store to multimedia.Therefore after synchronous and mixed processing unit 26 receive the compressed video and compressed audio that is transmitted by compression of digital video unit 24 and digital audio compression unit 25 simultaneously, with a mixed proportion compressed video and compressed audio are carried out the mixed processing of equal proportion immediately, so that can obtain a synchronized compressed video and a compressed audio.At last, more synchronized compressed video and compressed audio are delivered to the bus interface processing unit 27 of PC, so that convert synchronized compressed video and compressed audio to meet rapid data transmission common-use size, so that transmit by bus.For example utilize peripheral element female connector (Peripheral Component Interconnect; PCI) or universal serial convergence bus (Universal Serial Bus; USB) interface carries out the compressed video and the compressed audio of display synchronizationization.
Because the lifting of semiconductor fabrication, make that the capacity of memory of unit are is more and more big, therefore the capacity of institute's use hard disk (Hard-Disc) can arrive Unit 50,000,000,000 (i.e. 50 Giga Byte) in the existing PC.Multimedia film for high image quality, the resolution of its each picture at least need 720 * 480 pixels, so the storage area of a required use of multimedia film of 120 minutes needs more than the 12Giga Byte approximately, use so big storage area to store a film, in the use to the hard disk storage volume, be not very economical.Therefore, the disclosed individual digital product that makes has video recording and the multimedia system of demonstration digital audio-video, its topmost purpose is that the terleaved video that general multimedia play system is transmitted carries out the release of an interleave processing, make multimedia picture can convert the order picture of high image quality to, and then picture compresses processing in proper order, can make a multimedia film only need original 10-20/once the storage area can finish storage (promptly about 650Mega Byte-1.2Giga Byte), such storage area is with regard to unusual economy.If user's desire with the digital multimedia film of being play in cable TV or the radio and television, is recorded when viewing and admiring again in advance, can utilize system of the present invention to record a video, film is stored in the hard disk.In addition, if when the user desires directly to view and admire this digital multimedia film via the VGA display interface, the order picture that it also can be handled through release of an interleave will the order picture be directly delivered on the display by Bus Interface Unit and to be shown.Because the CPU (not shown) in the PC is not carried out any processing to the order image, and the video recording or play signal or video recording simultaneously and the broadcast that only come the control sequence picture by the system interface (not shown) of PC, so can not occupy the resource of CPU major part, therefore the user can record a video to the program of wanting to view and admire when using the PC processing transactions; And when viewing and admiring, not only can be with the program of video recording, be connected to high-res TV (HDTV) by personal computer system and go up demonstration, also can allow this moment PC continue to carry out the work of setting, make the user of PC when enjoying multimedia recreation, the calculation resources of the utilization PC that can have no to bear is again carried out general processing.
If when the user can only use CD drive (CD-ROM Player) in the PC when playing the VCD/DVD film, because CD drive (CD-ROM Player) is with digital video and audio decoder, so the signal of its output has comprised digital terleaved video and digital audio.For this reason, a kind of individual digital product that makes that is disclosed in another specific embodiment of the present invention has video recording and the multimedia device 30 of demonstration digital audio-video, its element comprises to be understood interleaved units 22, compression of digital video unit 24, digital audio compression unit 25 and reaches mixed cell 26 synchronously, please refer to shown in Figure 3.Identical in the function of each component units in apparatus of the present invention 30 and the aforesaid system 20 of the present invention, no longer repeat specification.
In addition, when if the user uses advanced DVD CD drive to play, because its output video has finished that release of an interleave is handled and audio frequency also through digitlization, so in the specific embodiment more of the present invention, it discloses a kind of individual digital product that makes and has video recording and the multimedia device 40 of demonstration digital audio-video, its bag composition has been drawn together compression of digital video unit 24, digital audio compression unit 25 and has been reached mixed cell 26 synchronously, please refer to shown in Figure 4.Identical in the function of each component units in apparatus of the present invention 40 and the aforesaid system 20 of the present invention, no longer repeat specification.
In each specific embodiment of the present invention, when having marched toward 0.13 micron manufacture craft, make Application Specific Integrated Circuit (Application Specific IC along with semiconductor fabrication; ASIC) and system-on-a-chip (System 0n a Chip; SoC) technology is also increasingly mature, therefore proposed by the invention make the individual digital product have video recording and shows that the multimedia system of digital audio-video can be incorporated on the SoC chip; And the individual digital product that makes proposed by the invention has video recording and the multimedia device of demonstration digital audio-video, because its each component units is digital signal, so can further reach with digital Application Specific Integrated Circuit (ASIC).
The above is preferred embodiment of the present invention only, is not in order to limit the application's claim scope; Simultaneously above description should be understood and be implemented for the special personage who knows the present technique field, so other do not break away from the change or the replacement of the equivalence of being finished under the disclosed spirit, all should be included in following the application's claim scope.
Claims (10)
1. one kind makes the individual digital product have video recording and the multimedia method of demonstration digital audio-video, comprising:
The information of the terleaved video and an analogue audio frequency of one modulation is provided;
Carry out separate modulation and the release of an interleave of the terleaved video of this modulation and handle, so that the terleaved video of this modulation converts a digitized release of an interleave video to;
Carry out the digital translation of this analogue audio frequency, make this analogue audio frequency digitlization to obtain a digital audio;
Carry out the compression of this release of an interleave video and handle, to obtain release of an interleave video once overcompression;
Carry out the compression of this digital audio and handle, to obtain digital audio once overcompression;
The release of an interleave video that Synchronous Processing should be compressed and the digital audio of this compression are to obtain a synchronized compressed video and a compressed audio; And
Export this synchronized compressed video and compressed audio a processing unit to this digital product, with decision record a video show or video recording simultaneously with show this synchronized compressed video and compressed audio.
2. one kind makes the individual digital product have video recording and the multimedia device of demonstration digital audio-video, comprising:
One release of an interleave processing unit carries out release of an interleave with a dynamic video and handles, so that this terleaved video converts the dynamic video of a release of an interleave to;
One compression of digital video unit compresses processing with the dynamic video of this release of an interleave, to reduce the employed frequency range of this release of an interleave dynamic video;
One digital audio compression unit compresses processing with a digital audio, to reduce the employed frequency range of this digital audio; And
One video/audio synchronous processing unit is carried out Synchronous Processing with the release of an interleave video of this compression and the digital audio of this compression, obtaining a synchronized compressed video and a compressed audio, and output this synchronized compressed video and compressed audio.
3. the individual digital product that makes as claimed in claim 2 has video recording and the multimedia device of demonstration digital audio-video, it is characterized in that also comprising a decoding digital video unit, this decoding digital video unit is the terleaved video of a modulation to be separated modulation handle, to obtain a digitized dynamic video.
4. the individual digital product that makes as claimed in claim 2 has video recording and the multimedia device of demonstration digital audio-video, it is characterized in that also comprising one audio frequency simulation/digital translation unit, this audio frequency simulation/digital translation unit is that an analogue audio frequency is carried out digital translation, to obtain a digital audio.
5. the individual digital product that makes as claimed in claim 2 has video recording and the multimedia device of demonstration digital audio-video, it is characterized in that also comprising an output bus interface unit, this output bus interface unit is that this synchronized compressed video and compressed audio are exported to show this synchronized compressed video and compressed audio.
6. the individual digital product that makes as claimed in claim 5 has video recording and the multimedia device of demonstration digital audio-video, and this output bus interface unit is a universal serial convergence bus in it is characterized in that.
7. the individual digital product that makes as claimed in claim 5 has video recording and the multimedia device of demonstration digital audio-video, it is characterized in that this output bus interface unit is a peripheral element content connector.
8. one kind makes PC have video recording and the multimedia system of demonstration digital audio-video, comprising:
One decoding digital video unit is separated modulation with the terleaved video of a modulation and is handled, to obtain a digitized dynamic video;
One release of an interleave processing unit carries out release of an interleave with this dynamic video and handles, so that this terleaved video converts the dynamic video of a release of an interleave to;
One audio frequency simulation/digital translation unit is carried out digital translation with an analogue audio frequency, to obtain a digital audio;
One compression of digital video unit compresses processing with the dynamic video of this release of an interleave, to reduce the employed frequency range of this release of an interleave dynamic video;
One digital audio compression unit compresses processing with this digital audio, to reduce the employed frequency range of this digital audio;
One video/audio synchronous processing unit is carried out Synchronous Processing with the release of an interleave video of this compression and the digital audio of this compression, to obtain a synchronized compressed video and a compressed audio;
One output bus interface unit should synchronized compressed video and compressed audio output, to show this synchronized compressed video and compressed audio; And
Be arranged in a central processing unit of this individual digital product, it is recorded a video in order to this synchronized compressed video of control and compressed audio or shows or video recording simultaneously and demonstration.
9. the PC that makes as claimed in claim 8 has video recording and the multimedia system of demonstration digital audio-video, it is characterized in that this output bus interface unit is a universal serial convergence bus.
10. the PC that makes as claimed in claim 8 has video recording and the multimedia system of demonstration digital audio-video, it is characterized in that this output bus interface unit is a peripheral element content connector.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410056727 CN1735184A (en) | 2004-08-11 | 2004-08-11 | Method and device for making personal digital product have video and display digital audio/video multimedia |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200410056727 CN1735184A (en) | 2004-08-11 | 2004-08-11 | Method and device for making personal digital product have video and display digital audio/video multimedia |
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| CN1735184A true CN1735184A (en) | 2006-02-15 |
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| CN 200410056727 Pending CN1735184A (en) | 2004-08-11 | 2004-08-11 | Method and device for making personal digital product have video and display digital audio/video multimedia |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111901654A (en) * | 2020-08-04 | 2020-11-06 | 海信视像科技股份有限公司 | Display device and screen recording method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111901654A (en) * | 2020-08-04 | 2020-11-06 | 海信视像科技股份有限公司 | Display device and screen recording method |
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