CN105262972A - Analog video compressor with high definition and low code rate - Google Patents
Analog video compressor with high definition and low code rate Download PDFInfo
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- CN105262972A CN105262972A CN201410840547.2A CN201410840547A CN105262972A CN 105262972 A CN105262972 A CN 105262972A CN 201410840547 A CN201410840547 A CN 201410840547A CN 105262972 A CN105262972 A CN 105262972A
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Abstract
The invention discloses a digital video compression device and method, and belongs to the technical field of computers. The device comprises a processor, an analog to digital converter, an audio encoder, a video encoder, a digital signal processor, an analog signal interface and a digital signal interface.
Description
Technical field
The present invention relates to the apparatus and method of a kind of analog video compression, belong to field of computer technology.
Background technology
A series of static image is caught, is recorded, is processed, stored and is transmitted in the mode of the signal of telecommunication and the various technology of reappearing by video general reference.Analog video is with continuous print analog signal form recording of video information, and analog video signal mainly comprises luminance signal, carrier chrominance signal, composite synchronizing signal and audio signal.Analog signal transmission band is roomy, cost is high, the not easily shortcoming such as storage.Video Decode becomes digital video to need analog-to-digital conversion, needs to carry out compressed encoding in storage with transmitting procedure.
Continuous print image change more than more than 24 frame pictures time, human eye cannot distinguish the tableaux of single width; Look it is level and smooth continuous print visual effect, such continuous print picture is called video.
The prosperity of network technology impels video to exist with the form of streaming media, is called as video traffic, is called multimedia communication, streaming media communication etc. in computer realm at field of telecommunications.Be widely used in the directions such as program request, live, the network teleconference, remote teaching, IPTV, mobile video.
Video data transmission occupied bandwidth is very high, and memory space takies greatly, and efficient compress technique can reduce offered load, and reduces storage system space hold.
Summary of the invention
The invention provides the device of a kind of analog video compression, analog-to-digital conversion can be carried out to analog video, be encoded into H.264 video flowing, and second-compressed is carried out to oneself video flowing of coding, effectively reduce video bandwidth and take and memory space.
The device that the present invention proposes, comprising: all-in-one; Processor, analog to digital converter, audio coder, video encoder, digital signal processor, analog signal interface, digital signal interface.
Accompanying drawing explanation
Fig. 1 is the use schematic diagram of apparatus of the present invention.
Fig. 2 is the structured flowchart of apparatus of the present invention.
Fig. 3 is compression unit structured flowchart of the present invention.
[main element symbol description]
100 ~ video compression device;
110 ~ analog interface;
120 ~ digital interface;
210 ~ analog interface;
220 ~ compression processing unit;
230 ~ digital interface;
310 ~ video A/D converting unit;
320 ~ audio A/D converting unit;
330 ~ video encoding unit;
340 ~ frame analytic unit;
350 ~ feedback unit;
360 ~ frame compression unit;
370 ~ audio coding unit;
380 ~ multiplexer;
Embodiment
Hereafter for introducing the preferred embodiments of the present invention.Each embodiment in order to principle of the present invention to be described, but is not used to limit the present invention.Scope of the present invention is when being as the criterion with appending claims.
Fig. 1 is that the analog video compressor reducer proposed according to the present invention uses schematic diagram, and all-in-one 100 at least comprises an analog interface 110, digital interface 120.
According to the present invention, analog interface 110, digital interface 120 are configured on video-unit 100, are connected, incoming video signal by analog interface with video source device.For example, analog interface can be CVBS terminal, also can be component vide terminal.
Fig. 2 is structured flowchart of the present invention.Input interface is analog interface in the present invention, output interface is digital interface, is all connected with Video compression unit.Analog interface 210, for receiving digital video signal, exports to Video compression unit by digital video signal.Video compression unit 220, carries out analog-to-digital conversion to analog signal, and coding, second-compressed export.Digital interface 230, for sending the digital video signal after compression.
Fig. 3 is the structured flowchart of compression processing unit 220 of the present invention, and he also comprises video A/D converting unit 310, audio A/D converting unit 320, video encoder 330, frame analytic unit 340, feedback unit 350, frame compression unit 360, audio coding unit 370, multiplexer 380.
Video A/D converting unit 310 is through analog-to-digital conversion and colour space transformation, de interlacing by analog video signal, be converted to the accessible digital signal of computer, Y, U, V data are obtained through sampling and Quantifying, cut out by video window controller, after change ratio, be delivered to video encoder units 330.
Audio A/D converting unit 320 is the devices being entirely digital audio system and changing from analog to digital, and it completes sampling, analog-to-digital conversion, anti-common mode filtering, reduces noise, ensures audio quality.
Audio encoder unit 370, in order to the audio signal of audio reception AD conversion unit 320, flow to Multiplexing Unit 380 through audio coding algorithms compression output audio.
Frame analytic unit 340 is in order to receiver, video coding unit 330 data, and analyze video requency frame data, bivalve value scene switching judging, extracts multiple key value.The key value that frame compression unit 360 pairs of frame analytic units 340 export is as input, second-compressed is carried out to frame of video selectivity, compression rear video frame exports feedback unit 350 to, feedback unit 350 Output rusults and source frame of video are carried out computing by frame analytic unit 340, draw compression assessed value △ Z, compare with preset value T, as △ Z < T, frame compression unit 360 exports result to Multiplexing Unit 380, as △ Z > T, frame compression unit 360 adjusts compression parameters, result is exported to Multiplexing Unit 380.
In analog video compressor reducer of the present invention, processor, for controlling and perform the command operating of compression algorithm, mainly completes and obtains instruction, performs instruction, and with the operation such as internal storage and logical block exchange message.
Claims (5)
1. realize a device for analog video compression, comprising: processor, analog to digital converter, audio coder, video encoder, digital signal processor, analog signal interface, digital signal interface.
2. device as claimed in claim 1, wherein analog interface can have one or more.
3. device as claimed in claim 1, wherein digital interface can have one or more.
4. device as claimed in claim 1, wherein analog interface receives audio-video signal, as the input interface of device; Wherein digital interface sends the vision signal after compressing, as the output interface of device.
5. device as claimed in claim 1, wherein processor runs video second-compressed algorithm, carries out second-compressed process to vision signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410840547.2A CN105262972A (en) | 2014-12-31 | 2014-12-31 | Analog video compressor with high definition and low code rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410840547.2A CN105262972A (en) | 2014-12-31 | 2014-12-31 | Analog video compressor with high definition and low code rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105262972A true CN105262972A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410840547.2A Pending CN105262972A (en) | 2014-12-31 | 2014-12-31 | Analog video compressor with high definition and low code rate |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1302157A (en) * | 1999-12-29 | 2001-07-04 | 上海龙林通讯技术开发有限公司 | Device for compressing multimedia source signal on IP network |
| CN1825958A (en) * | 2005-02-22 | 2006-08-30 | 乐金电子(中国)研究开发中心有限公司 | Compressed video quality checking method for image quality evaluation |
| CN202068513U (en) * | 2011-01-27 | 2011-12-07 | 北京华夏电通科技有限公司 | Host for standard-definition and high-definition audio-video coder/decoder |
| CN103310501A (en) * | 2012-03-16 | 2013-09-18 | 比亚迪股份有限公司 | Vehicle traveling data recording device |
-
2014
- 2014-12-31 CN CN201410840547.2A patent/CN105262972A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1302157A (en) * | 1999-12-29 | 2001-07-04 | 上海龙林通讯技术开发有限公司 | Device for compressing multimedia source signal on IP network |
| CN1825958A (en) * | 2005-02-22 | 2006-08-30 | 乐金电子(中国)研究开发中心有限公司 | Compressed video quality checking method for image quality evaluation |
| CN202068513U (en) * | 2011-01-27 | 2011-12-07 | 北京华夏电通科技有限公司 | Host for standard-definition and high-definition audio-video coder/decoder |
| CN103310501A (en) * | 2012-03-16 | 2013-09-18 | 比亚迪股份有限公司 | Vehicle traveling data recording device |
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Application publication date: 20160120 |
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