CN1153459C - Digital CD recording and hard disk monitoring system - Google Patents
Digital CD recording and hard disk monitoring system Download PDFInfo
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- CN1153459C CN1153459C CNB011179937A CN01117993A CN1153459C CN 1153459 C CN1153459 C CN 1153459C CN B011179937 A CNB011179937 A CN B011179937A CN 01117993 A CN01117993 A CN 01117993A CN 1153459 C CN1153459 C CN 1153459C
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- 238000012544 monitoring process Methods 0.000 title abstract 3
- 230000005236 sound signal Effects 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000006870 function Effects 0.000 description 5
- 230000006837 decompression Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
The present invention relates to a digital CD video recording and hard disc monitoring system which belongs to an electronic sound image monitoring system of a video recorder. The present invention is characterized in that the system is composed of a digital encoding/decoding audio signal processing system and a digital video encoding/decoding signal processing system, wherein video and audio analog signals are converted to digital signals by an analog-to-digital converter. Then, the converted video/audio digital signals are encoded and compressed by a video encoder in an MPEG-I or MPEG-II compressing mode, and finally, the transmission modes of the signals are converted by a PCI/IDE converter. The signals are input to a recording machine core through an IDE bus, and the function of video recording is realized by the recording machine core. The definition of the video recorder can reach 350 or 500 lines by the present invention.
Description
Technical field
The present invention relates to a kind of optical digital disk video and hard disk supervisory control system, it belongs to a kind of video tape recorder electronic audiovideo supervisory control system that is used for.
Background technology:
The supervisory control system of existing video tape recorder all is to adopt analog signal, and its digital compression adopts the compress mode of MPEG-1, and its definition mostly is 250 lines most, so the definition of existing video tape recorder is poor; Analog signal that existing video tape recorder adopted and electromagnetic signal itself also exist loss big, the problem that lossing signal is serious in addition; And come the holding time of storage signal short with tape.Existing video tape recorder generally all adopts analog signal output.
Summary of the invention:
The object of the present invention is to provide a kind of vision signal clear, time data memory is long, rational optical digital disk video of interface mode and hard disk supervisory control system.
The present invention is achieved in that
A kind of optical digital disk video and hard disk supervisory control system is characterized in that it is made up of digital coding/decoding audio signal processing and digital video coding/decoding signal processing system;
A: described digital coding/decoding audio signal processing is can carry out the integrated chip that audio coding/decoding processing, Digital Signal Processing and central authorities handle by one, audio frequency simulation/numeral, digital-to-analog conversion chip and be used for the programmable logic chip composition of translation interface; The audio signal of being imported is carried out/mould/number conversion through audio frequency simulation/digital translation chip, to send into the integrated chip that can carry out the encoding and decoding processing from the serial data signal that audio frequency simulation/the digital translation chip is exported again and carry out encoding process, audio signal behind the compressed coding, be divided into two-way, wherein one the tunnel will send into programmable logic chip, another road audio signal directly enters the voice data process chip that has built-in reverberation, isolates the output of left and right sound channels signal through the D/A switch chip again;
B: described digital video decoding signal processing system comprises a video mould/number conversion decoding chip, video encoder, decoder and central processing unit, programmable logic chip and a D/A switch chip; When vision signal is imported, carry out mould/number conversion through video mould/number conversion decoding chip, produce level and vertical synchronization digital signal simultaneously, divide two-way output then, one the tunnel sends into video encoder carries out the video compression coding processing, video data stream behind the compressed coding is sent into programmable logic chip and is carried out interface conversion, again output; After export by decoder and the decoding of central processing unit integrated chip on another road, through D/A switch chip output analog signal.On described central processing unit, also connect a Dram; On described Video Decoder, be connected with Dram.
The present invention has adopted digital data transmission, has improved the image definition of video tape recorder, can be so that the definition of video tape recorder reaches 350 lines or 500 lines; Analog signal can also be passed through the inter-process imprinting on CD, be convenient to preserve for a long time these audio-visual signals.System of the present invention is simple, suitable, and can record various pictures and sounds input signals with VCD, DVCD and three kinds of forms of CD-DA.
Description of drawings:
Accompanying drawing 1 is a system architecture diagram of the present invention
Embodiment:
Be embodiments of the invention with accompanying drawing 1 below, the present invention be further detailed:
Described digital coding/decoding audio signal processing is can carry out the integrated chip that audio coding/decoding processing, Digital Signal Processing and central authorities handle by one, audio frequency mould/plans numeral, digital-to-analog conversion chip and be used for the programmable logic chip composition of translation interface.Its digital audio coding/decoding signal processing and operation principle are as follows:
When video tape recorder is in recording state, the audio signal (L, R sound channel) of input is directly carried out mould/number conversion through audio frequency mould/number conversion chip IC PCM1800, again the serial data signal of PCM1800 output is sent into central processing unit IC TM1300 and carries out the audio coding processing.Wherein one tunnel audio signal is when format is VCD form and SVCD form, MPEG---the I form carries out compressed encoding by the TM1300 employing, and when adopting the CD-DA form to record, TM1300 is the pulse code modulation mode to the compression coding mode of this road audio data stream, outside TM1300, be with simultaneously the Dram of 4MB, carry out the temporary and buffering of data between TM1300 and the Dram.TM1300 will be compressed the audio data stream of coding more and send into programmable logic chip IC EPF6016ATC144-3, can utilize programmable logic chip IC EPF6016ATC144-3 that pci bus interface is converted into the IDE/ATAPI interface here, so that output.Other one tunnel audio signal is directly imported the ICYSS915 that contains voice data processing and built-in karaoke function after TM1300 carries out compressed encoding, realize the various sound fields processing of voiceband data signal, and after D/A switch chip IC CS4340-KS carry out isolating L, R sound channel signal behind the D/A switch, again after amplifier carries out the level processing and amplifying, it mainly is that L, R sound channel each minute two-way are amplified, there are four groups of discharge circuits its inside, and the audio signal data stream after processing and amplifying is directly inputted into TV monitor.
The digital video decoding signal processing system comprises a video mould/number conversion decoding chip, video encoder, decoder and central processor CPU, programmable logic chip and a D/A switch chip.Digital video decoding signal processing and operation principle are as follows:
When video tape recorder was in recording state, owing to adopted the SAA7114 chip with video mould/number conversion of signals and decoding function, it had two-path video input signal (video 1 and video 2) and the S terminal signals imports and brightness SY, colourity SC signal.So when vision signal was imported, IC SAA7114 can realize the mould/number conversion of vision signal.Produce level and vertical synchronizing signal simultaneously, be used for synchronization video encoder IC SM2210 the coding of video and the video D/A switch of last output.Vision signal is divided into two paths of signals through the parallel data stream after the SAA7114 conversion, wherein one the tunnel sends into IC SM2210 and carries out video compression coding and handle.When format was VCD, compression coding mode was MPEG-I, and when format was SVCD, compress mode was MPEG-II.At the outer Dram that is with 8MB of SM2210, be used to realize the temporary and buffering of video data stream, the video data stream behind the compressed coding is sent into IC EPF6016ATC144-3.EPF6016ATC144-3 realizes mutualization of pci data transmission means and IDE data transfer mode, and video data stream and audio data stream are converted into the IDE transmission means by EPF6016ATC144-3 simultaneously.Another road is by Video Decoder, central processing unit, the decoding of TM1300 chip, enter the decoding of AV3609 video D/A switch again after, to TV monitor.
Because the imprinting movement of this programme adopts ide interface to carry out data with hard disk and exchanges, so EPF6016ATC144-3 is converted into the IDE mode with the transmission means (PCI) of video data stream and audio data stream and inputs to imprinting movement and hard disk inner control movement servo system, reaches the effect of recording.
In addition, the control program of whole system all is stored in the Intel 28F800.When start work, control program decompresses to the peripheral Dram of TM1300, as control program of the present invention.
The present invention except that possessing recording function, also compatible SVCD player.When working method and the operation principle of optical digital disk video tape recorder during as the SVCD player as follows:
The IDE data flow of directly being downloaded by movement is converted to pci data stream through EPF6016ATC144-3, realizes the decompression of audio/video through TM1300.The decompression mode of video is MPEG-I (VCD form) and MPEG-II (SVCD form), and the decompression mode of audio frequency is MPEG---I standard (VCD form and SVCD form), adopt pulse code modulation mode standard for the CD-DA form, be input to IC YSS915 through the audio data stream after decompressing and carry out the sound field processing, (MH realizes D/A switch at process IC CS434, thereby isolate L, R sound channel signal, carry out back level processing and amplifying through IC TL074 at last, realize simulated audio signal output.In addition, by the D/A switch that defeated people carries out vision signal to the IC AV3169, realize analog video signal output through the video data stream after decompressing.Wherein also include required SY, SC and CVBS signal.
The realization of Kara OK function: microphone sound amplifies (being finished by reverberation plate) by prime and inputs to the VDR mainboard, after process IC TL074 carries out processing and amplifying, finish digital sound field effect process (inside is provided with the A/D change-over circuit) at IC YSS915, realize the output of reverberant audio signal at last.
The present invention is converted into digital signal by A/D converter with the analog signal of video and audio frequency,---I or MPEG---11 compress modes are handled the video/audio encoding digital signals compression after transforming to borrow the frequency encoder to press MPEG by video then, at last by PCI/IDE transducer switching signal transmission means, input to the CD writer in-core by the IDE bus, realize the function of video recording by the imprinting movement.
Claims (2)
1, a kind of optical digital disk video and hard disk supervisory control system is characterized in that it is made up of digital coding/decoding audio signal processing and digital video coding/decoding signal processing system;
A: described digital coding/decoding audio signal processing is can carry out the integrated chip that audio coding/decoding processing, Digital Signal Processing and central authorities handle by one, audio frequency simulation/numeral, digital-to-analog conversion chip and be used for the programmable logic chip composition of translation interface; The audio signal of being imported is carried out mould/number conversion through audio frequency simulation/digital translation chip, to send into the integrated chip that can carry out the encoding and decoding processing from the serial data signal that audio frequency simulation/the digital translation chip is exported again and carry out encoding process, audio signal behind the compressed coding, be divided into two-way, wherein one the tunnel will send into programmable logic chip, another road audio signal directly enters the voice data process chip that has built-in reverberation, isolates the output of left and right sound channels signal through the D/A switch chip again;
B: described digital video decoding signal processing system comprises a video mould/number conversion decoding chip, video encoder, decoder and central processing unit, programmable logic chip and a D/A switch chip; When vision signal is imported, carry out mould/number conversion through video mould/number conversion decoding chip, produce level and vertical synchronization digital signal simultaneously, divide two-way output then, one the tunnel sends into video encoder carries out the video compression coding processing, video data stream behind the compressed coding is sent into programmable logic chip and is carried out interface conversion, again output; After export by decoder and the decoding of central processing unit integrated chip on another road, through D/A switch chip output analog signal.
2, video of the optical digital disk described in claim 1 and hard disk supervisory control system is characterized in that also connecting a Dram on described CPU; On described Video Decoder, be connected with Dram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011179937A CN1153459C (en) | 2001-05-05 | 2001-05-05 | Digital CD recording and hard disk monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011179937A CN1153459C (en) | 2001-05-05 | 2001-05-05 | Digital CD recording and hard disk monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1384667A CN1384667A (en) | 2002-12-11 |
| CN1153459C true CN1153459C (en) | 2004-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011179937A Expired - Fee Related CN1153459C (en) | 2001-05-05 | 2001-05-05 | Digital CD recording and hard disk monitoring system |
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| CN (1) | CN1153459C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377247C (en) * | 2003-10-31 | 2008-03-26 | 浙江中控技术股份有限公司 | Real-time data online compression and decompression method |
| CN101159815B (en) * | 2007-11-16 | 2010-10-20 | 邬承基 | Modified control method for digital picture hard disk videocorder |
| CN101968967B (en) * | 2010-08-04 | 2012-05-23 | 深圳英飞拓科技股份有限公司 | Prerecording method used for monitoring equipment |
| JP6195444B2 (en) * | 2013-01-18 | 2017-09-13 | サターン ライセンシング エルエルシーＳａｔｕｒｎ Ｌｉｃｅｎｓｉｎｇ ＬＬＣ | Source device, communication system, source device control method, and sink device control method |
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2001
- 2001-05-05 CN CNB011179937A patent/CN1153459C/en not_active Expired - Fee Related
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| CN1384667A (en) | 2002-12-11 |
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