CN101035275A - Novel embedded multimedia stream server with the TV function - Google Patents
Novel embedded multimedia stream server with the TV function Download PDFInfo
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- CN101035275A CN101035275A CNA2006100342381A CN200610034238A CN101035275A CN 101035275 A CN101035275 A CN 101035275A CN A2006100342381 A CNA2006100342381 A CN A2006100342381A CN 200610034238 A CN200610034238 A CN 200610034238A CN 101035275 A CN101035275 A CN 101035275A
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Abstract
The invention is a novel embedded multimedia and TV streaming server, an embedded network streaming media server which demodulates TV signals into common video-audio analog signals and processes video-audio analog signals of DVDs and cameras into digital signals and then makes compression (MPEG4, MPEG2, H.264, and MJPEG), storage and network transmission, and computers, PDAs or cellphones can access the streaming server through network to watch TV programs, DVD video tapes and real-time camera-monitored information. And the streaming server also has IPTV STB (set-top box) function to receive video-audio digital stream from network and play the video-audio digital stream after decoding. And the streaming server is applied to the fields: novel home network's digital entertainment, realtime network video monitoring, network video meeting, remote network medical treatment, remote network education, etc.
Description
One, technical field
This patent relates to the hold concurrently streaming server of TV of a kind of novel built-in multimedia, it is a kind ofly multimedia and TV signal are demodulated to common analog signal reprocessing become digital signal, compresses then, the built-in network streaming media server of storage and Network Transmission.Be applicable to fields such as novel home network digital entertainment and the real-time video monitoring on local area network (LAN) and wide area network, video conference, tele-medicine long-distance education.
Two, technical background
TV can be divided into simulated television and Digital Television two big classes by the signal transmission at present.
Simulated television is looking on the electromagnetic wave that audio analog signals is carried in high frequency of TV, be transferred to the television set of each family by coaxial cable, television internal is to the demodulator of frequency electromagnetic waves, and this demodulator comes out to be input on the television display screen curtain with the audio-video signal demodulation of simulation.
Digital Television is that compressed digital signal (MPEG2) is carried on the electromagnetic wave, be transferred to each family by coaxial cable, by top box of digital machine, its principle is that digital demodulation signal is come out then, then digital signal decompression is become analog signal, show on TV again.
Can directly show on computers by TV card in addition, its operation principle is the video/audio signal that the high-frequency electromagnetic signal on the coaxial cable is demodulated to simulation by a demodulator, become digital data transmission to computer, to show this analog signal conversion then, computer can be controlled demodulator conversely, thereby realizes transferring the function of platform.Computer also can realize that compression etc. is transferred to network by software, thereby realizes the multimedia function of network.But because the safety and the stability of software compression efficiency and computer are not high, add the reason that power consumption is big, then can remedy above defective with embedded system.
The network Internet Protocol Television (IPTV) of current trend is that original TV signal data is changed into the data mode that is fit to Network Transmission by coding, transmits decoding by the Internet then and becomes the signal broadcast that terminal (computer or TV) can be accepted.
Streaming media server mainly contains two kinds of implementations: based on the streaming media server and the flush type stream media server of main frame/PC platform, video compression based on the streaming media server of main frame/PC platform is mainly finished by streaming media server software, rely on CPU powerful computing ability, streaming media server software can obtain very high video compression ratio and powerful video editing function (video clipping, video synthetic etc.).But based on the shortcoming of the streaming media server of main frame/PC platform is to be used for indoorly, attacked by internet worm, and therefore the server based on main frame/PC platform needs the personal management, is mainly used in fields such as radio station, interactive television, website.
The video compression of flush type stream media server is mainly finished by high-speed dsp chip or embedded microprocessor, its advantage is that volume is little, low in energy consumption, can be subjected to virus attack, reliability height, can be used for various adverse circumstances, can realize unattended operation, especially be fit to open-air the use.Flush type stream media server is mainly used in video monitoring, video telephone etc. at present.
Flush type stream media server adopts the MPEG-4 compressed video signal, MPEG-4 is the video encoding standard for the mobile communication equipment low rate that the real-time Transmission vision signal is formulated on Internet, high compression ratio, MPEG-4 adopts the interframe compression, only store differentiated place between the successive frame, can reach bigger compression ratio.MPEG-4 adopts OO compress mode, be different from MPEG-1 and MPEG-2, MPEG-4 becomes picture breakdown each imaging piece to compress simply, but earlier object in the image (as people, thing) and background separation are come out, carry out in the frame respectively and interframe encode at different objects, allow simultaneously different object flexible allocation code checks, to the coding of important information distribution than multibyte, the coding of the less important less byte of information distribution, therefore can when realizing high compression ratio, obtain less distortion.
Three, summary of the invention
(1) goal of the invention
The purpose of this invention is to provide the hold concurrently streaming server of TV of a kind of novel built-in multimedia, computer, PDA or mobile phone can TV receptions by this streaming server of access to netwoks, DVD video recording and real-time monitor message.This server can have the function of IPTV set-top box, by other servers on the accesses network or hard disk on the book server or the content of multimedia on the external portable hard drive, is played on the television set then.
(2) technical scheme
This streaming server is demodulated to the video/audio signal of simulation by a demodulator with the high-frequency electromagnetic signal on the coaxial cable, becomes digital data transmission to the video compression chip this analog signal conversion then.
The high-frequency signal of TV can be an analog video signal, it also can be digital video signal, become the chip of numeral (A/D conversion) signal to convert the digital audio/video digital signal to by analog signal conversion after being demodulated to the Voice ﹠ Video signal of simulation through television high frequency demodulator (Tuner), be input to the realtime graphic condensing encoder.
This streaming server comprises the audio input port of looking of other simulations, and video input port input analog video signal can connect video output terminals such as common camera, VCD/VCR/DVD player; Audio frequency is a transmitted in both directions, can connect microphone and earphone (can realize IP phone), becomes the chip of numeral (A/D conversion) signal to convert the digital audio/video digital signal to by analog signal conversion, is input to the realtime graphic condensing encoder.
The analog signal of multichannel can be imported simultaneously and become digital signal respectively, is input to the compression chip compression after too much picture synthesizes, and also can switch supplied with digital signal by multiple signals, and the independent compression chip that is input to compresses.
Compression chip can adopt compression algorithm efficiently, comprising H.264, and MPEG4, MPEG2, H263, MJEPG delivers to built-in embedded OS by internal bus.This operating system comprises built-in WEB server, can control the A/D conversion chip by this server, adjusts parameters such as brightness, saturation, tone; The frequency of control television signal decoder reaches the function of transferring platform, searching platform and frequency configuration; Can also dispose parameters such as video format, code stream, frame per second and audio frequency in addition, to realize the best audio frequency effect of looking under the different network environments.This built-in WEB server can also be provided with IP address and other network parameters.
This microprocessor chip is connected to cable network or uses the wireless network device, can carry out network service, also can be connected to the portable hard disk of read-write hard disk or USB, with the storage of compression above hard disk.As user during by access to netwoks, after the data that the client handle receives from network are passed through decompress(ion), make the user can watch real-time video image, simultaneously the user also can visit built-in WEB server by network, comes control of video switching and channel selection, searches function such as platform.By this WEB server user the IP address can also be set, can control, allow many people to visit simultaneously, can on network, realize multicast and broadcasting video encode stream.Because video/audio compression is focused in the very little equipment of volume, can directly be connected into local area network (LAN) and wide area network, reach promptly to insert and promptly see, save multiple complicated cable, an IP address only need be set during installation, the user also need not to install any hardware device.
This microprocessor can built-inly be looked the audio decompression compression system, also can be connected to one and look on the audio decoder chip, changes by D/A then, outputs on the TV to show.This microprocessor can read the audio, video data of hard disk or other memory devices simultaneously, the perhaps audio, video data that obtains compressing by other servers in the built-in WEB server access network, the process decoder system is decoded, and they are changed by D/A, outputs on the TV to show.
This microprocessor can connect data-in port and I/O interface.
Two these streaming servers insert camera and can realize that with microphone and TV two-way real-time audio frequency and video exchange.
This streaming server also comprises the compression and the embedded web server two big functions of video/audio signal, and video input port input analog video signal can connect video output terminals such as common camera, VCD/VCR/DVD player; Audio frequency is a transmitted in both directions, can connect microphone and earphone (can realize IP phone); The RS-232 data channel of full duplex can be used for transfer of data and control.
The scheme block diagram is seen accompanying drawing 1, accompanying drawing 2.
(3) technique effect
We can TV reception by this streaming server of access to netwoks with computer, PDA or mobile phone, DVD video recording and real-time monitor message.This server can also have the function of IPTV set-top box, by other servers on the accesses network or hard disk on the book server or the content of multimedia on the external portable hard drive, is played on the television set then.
Built-in WEB server can be provided with IP address and domain name etc., and the audio/video flow in the time of can providing network implementation also can provide the data flow of file.Play in real time or look audio frequency on the file by mobile phone, PDA or PC.
By built-in digital television demodulator and built-in WEB server, can be used as the streaming server of family's TV, offer home network, as MPEG4, the Digital Television of MPEG2 compression.
This server has the function of built-in PC, and it can be visited other websites and be presented on the video screen, and by its built-in MPEG4, MPEG2 decompression chip can show on video screen in real time.
Can be on TV or see realtime graphic on the monitoring camera that is connected on this server or nurse child's the camera on the home network computer by this server.If you go out or surf the Net in the workplace, by this server can see get home in real-time situation, alarm can be connected on this server by the I/O mouth, in case report to the police, alarm signal can reinform service organization or I by this Server Transport on the network platform.
Can manually or automatically film, TV, the first-class video/audio of shooting be stored on the network hard disc through after being compressed into file, and the audio, video data on this network hard disc can be transferred to PC, PDA, smart mobile phone client in the network.
The webserver is embodied in and allows network client to watch video image on the streaming media server, the audio signal on the playing stream media server by browser.Streaming media server allows many people to visit simultaneously, can realize multicast and broadcasting on network.The characteristics of this server are: (1) scope of deploying to ensure effective monitoring and control of illegal activities is wide, can use ready-made computer network transmission video signal, does not have the restriction of length of cable and signal attenuation; (2) extended capability is strong, and all devices is with the IP address designation, and increase equipment just means increases the IP address; (3) can form the multilayer remote control network, the vision signal after the digitlization with unified procotol in transmission over networks, but router remote transmission video is closed, striden to inter-network.
Four, description of drawings
Accompanying drawing 1 is a TV feed server technology scheme block diagram.
Accompanying drawing 2 is TV feed server technology scheme block diagrams of band stream decoding function.
Accompanying drawing 3 is TV feed server implementation example one block diagrams.
Accompanying drawing 4 is TV feed server implementation example two block diagrams of band stream decoding function.
Five, embodiment
Embodiment one:
Embodiments of the present invention is further illustrated below in conjunction with accompanying drawing 3.
This streaming server is a system based on the ARM microprocessor, and it has strong functions, provides numerous interfaces to use to the client.
This streaming server is demodulated to the video/audio signal of simulation by a demodulator (TV Tuner) with the high-frequency electromagnetic signal on the coaxial cable, becomes digital data transmission to compression chip this analog signal conversion then.This streaming server comprises the audio input port of looking of other simulations, and video input port input analog video signal can connect video output terminals such as common camera, VCD/VCR/DVD player; Audio frequency is a transmitted in both directions, can connect microphone and earphone (can realize IP phone), becomes the chip of numeral (A/D conversion) signal to convert the digital audio/video digital signal to by analog signal conversion, is input to the realtime graphic condensing encoder.The analog signal of multichannel can be imported simultaneously and become digital signal respectively, is input to the compression chip compression after too much picture synthesizes, and also can switch supplied with digital signal by multiple signals, and the independent compression chip that is input to compresses.
Vision signal is through special-purpose video a/d, video coding chip, arm processor, Ethernet interface access network based on ethernet.The video signal preprocessor of the analog video image input specialty that the simulation video camera by far-end obtains, as realizing the input of four road video switchs, the A/D that SAA7113 (Video processing A/D) finishes one road analog video with PAL or NTSC form changes the output digital video signal, perhaps can allow four road analog video signals import simultaneously with TW2824, synthetic one road video analog signal also realizes that A/D changes out digital video signal.This unit carries out clamped, amplification and filtering to analog video signal earlier, removes the noise jamming of signal.Signal after the purification is converted into digital video signal through A/D.Digital video is carried out Y, UV through the Y/C separation control circuit and is separated.Y after the separation, UV signal enter brightness and chroma control circuit respectively, and the signal of brightness and colourity obtains strengthening and weakening according to the user preset value.YUV signal through brightness and colourity processing is converted to the CCIR-601 normal video data flow that can be compressed the coding unit processing in the video decode circuit.The audio signal processor UDA136ITS (Audio Processing A/D) of simulated audio signal input specialty finishes the A/D conversion outputting digital audio signal of one road analogue audio frequency.
The normal video data flow is carried out efficiently compressed encoding fast by video encoder GO7007SB, compressed format can be MPEG1, MPEG2, MPEG4, H.263, GoStream format, the user sets as required voluntarily, to satisfy the different requirement of different clients.GO7007SB is a high efficiency, H.D integrated chip, can be to contrast, the brightness of image, and colourity is controlled, and realizes estimation, motion compensation, DCT, IDCT, quantification and inverse quantization and variable-length encoding in the process of coding.Can export the picture of DVD quality, and the high-quality QCIF format-pattern that 40Kbps is arranged under the low speed bandwidth.And it also has oneself USB interface and HPI interface: can directly control GO7007SB by USB; Carry out communication and transfer of data by HPI interface and ARM microprocessor S3C2510X.For images efficiently, the buffer memory of GO7007SB is an external high-speed register MT48LC2M32B2 SDRAM (register 1) carries out image carries out transfer of data by DMA, has saved resource so that carry out digital coding more efficiently.Digital video signal through overcompression has been transmitted to microprocessor S3C2510X (microprocessor).
This microprocessor chip is connected to wired Ethernet or uses the wireless network device, can carry out network service.As user during by access to netwoks, after the data that the client handle receives from network are passed through decompress(ion), make the user can watch real-time video image, simultaneously the user also can visit built-in WEB server by network, comes control of video switching and channel selection, searches function such as platform.By this WEB server user the IP address can also be set, can control, allow many people to visit simultaneously, can on network, realize multicast and broadcasting video encode stream.
This streaming server also comprises the compression and the embedded web server two big functions of video/audio signal, and video input port input analog video signal can connect video output terminals such as common camera, VCD/VCR/DVD player; Audio frequency is a transmitted in both directions, can connect microphone and earphone (can realize IP phone); The RS-232 data channel of full duplex can be used for transfer of data and control.
Embodiment two:
Embodiments of the present invention is further illustrated below in conjunction with accompanying drawing 3.
In conjunction with the embodiments one, the high-frequency signal of TV is a digital video signal, and used television high frequency demodulator is the Voice ﹠ Video signal that Digital Television rectifier (DVB-T etc.) is demodulated to simulation.All the other are similar with embodiment one.
Embodiment three:
Embodiments of the present invention is further illustrated below in conjunction with accompanying drawing four.
In conjunction with the embodiments one, this microprocessor can built-inly be looked the audio decompression compression system, also can be connected to one and look on the audio decoder chip, then by the D/A conversion, outputs on the TV and shows.This microprocessor can read the audio, video data of hard disk or other memory devices simultaneously, the perhaps audio, video data that obtains compressing by other servers in the built-in WEB server access network, the process decoder system is decoded, and they are changed by D/A, outputs on the TV to show.
This microprocessor can connect data-in port and I/O interface.
Two these streaming servers insert camera and can realize that with microphone and TV two-way real-time audio frequency and video exchange.
All the other are similar with embodiment one.
Embodiment four:
Embodiments of the present invention is further illustrated below in conjunction with accompanying drawing 4.
In conjunction with the embodiments two and three.The network digital TV signal be can accept, home network TV and visual telephone function realized by this streaming server.
Claims (12)
1. the novel built-in multimedia streaming server of TV of holding concurrently, it is characterized in that: the simulation video/audio signal of the circuit of television demodulator output with look audio A/D change-over circuit and be connected, the output of looking audio A/D change-over circuit is connected to the video encoding chip, the video encoding chip links to each other with microprocessor, microprocessor links to each other with ethernet controller, and ethernet controller links to each other with standard ethernet.
2. the novel built-in multimedia streaming server of TV of holding concurrently, it is characterized in that: the circuit of television demodulator with look audio A/D change-over circuit and be connected, the output of looking audio A/D change-over circuit is connected to the video encoding chip, the video encoding chip links to each other with microprocessor, microprocessor comprises decoder module, and microprocessor is connected with ethernet controller, hard disk, analog video signal output and USB mobile memory.
3. the hold concurrently streaming server of TV of built-in multimedia according to claim 1, it is characterized in that: microprocessor links to each other with wireless network module.
4. the hold concurrently streaming server of TV of built-in multimedia according to claim 1 is characterized in that: other simulations simultaneously look audio input signal through interface with look audio A/D change-over circuit and be connected.
5. according to the hold concurrently streaming server of TV of claim 3 and 4 described built-in multimedias, it is characterized in that: microprocessor connects data communication module and alarm communication module.
6. the hold concurrently streaming server of TV of built-in multimedia according to claim 2, it is characterized in that: microprocessor links to each other with wireless network module.
7. the hold concurrently streaming server of TV of built-in multimedia according to claim 2 is characterized in that: other simulations simultaneously look audio input signal through interface with look audio A/D change-over circuit and be connected.
8. according to the hold concurrently streaming server of TV of claim 6 and 7 described built-in multimedias, it is characterized in that: microprocessor connects data communication module and alarm communication module.
9. the hold concurrently streaming server of TV of built-in multimedia according to claim 5 is characterized in that: used coding chip is MPEG4, MPEG2, H.264, the MJPEG compression chip.
10. the hold concurrently streaming server of TV of built-in multimedia according to claim 5, it is characterized in that: used compression chip is WIS7007SB, used microprocessor is ARM.
The streaming server of TV 11. built-in multimedia according to claim 8 is held concurrently is characterized in that: used coding chip and decoder module are MPEG4, MPEG2, H.264, the MJPEG chip.
The streaming server of TV 12. built-in multimedia according to claim 8 is held concurrently, it is characterized in that: used compression chip is WIS7007SB, used microprocessor is the ARM chip of built-in decoder module.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444640C (en) * | 2006-11-21 | 2008-12-17 | 北京中星微电子有限公司 | A network pick-up device |
| CN101170687B (en) * | 2007-11-28 | 2010-07-28 | 武汉烽火网络有限责任公司 | Method for front recording order to penetrate NAT based on video monitoring |
| CN101179694B (en) * | 2007-11-23 | 2010-08-18 | 中兴通讯股份有限公司 | Issuing system and method of picturephone meeting |
| CN101902378A (en) * | 2010-07-28 | 2010-12-01 | 新太科技股份有限公司 | Digital home full-service intelligent terminal |
| CN101394548B (en) * | 2008-10-22 | 2011-05-25 | 中山大学 | System for implementing remote video monitoring under digital household environment and method thereof |
| CN101662666B (en) * | 2008-08-26 | 2011-06-22 | 中兴通讯股份有限公司 | Method and system for examining monitoring images by IP set-top box |
| CN102346619A (en) * | 2010-07-29 | 2012-02-08 | 深圳Tcl新技术有限公司 | Network television for user to customize user interface (UI) and customization method for network television |
| CN103024574A (en) * | 2012-12-17 | 2013-04-03 | 青岛海信宽带多媒体技术有限公司 | Digital television receiving terminal and method for interaction with user side |
| CN103024442A (en) * | 2012-10-15 | 2013-04-03 | 中国海洋大学 | Family stream media server based on digital television network |
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2006
- 2006-03-07 CN CNA2006100342381A patent/CN101035275A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444640C (en) * | 2006-11-21 | 2008-12-17 | 北京中星微电子有限公司 | A network pick-up device |
| CN101179694B (en) * | 2007-11-23 | 2010-08-18 | 中兴通讯股份有限公司 | Issuing system and method of picturephone meeting |
| CN101170687B (en) * | 2007-11-28 | 2010-07-28 | 武汉烽火网络有限责任公司 | Method for front recording order to penetrate NAT based on video monitoring |
| CN101662666B (en) * | 2008-08-26 | 2011-06-22 | 中兴通讯股份有限公司 | Method and system for examining monitoring images by IP set-top box |
| CN101394548B (en) * | 2008-10-22 | 2011-05-25 | 中山大学 | System for implementing remote video monitoring under digital household environment and method thereof |
| CN101902378A (en) * | 2010-07-28 | 2010-12-01 | 新太科技股份有限公司 | Digital home full-service intelligent terminal |
| CN102346619A (en) * | 2010-07-29 | 2012-02-08 | 深圳Tcl新技术有限公司 | Network television for user to customize user interface (UI) and customization method for network television |
| CN103024442A (en) * | 2012-10-15 | 2013-04-03 | 中国海洋大学 | Family stream media server based on digital television network |
| CN103024574A (en) * | 2012-12-17 | 2013-04-03 | 青岛海信宽带多媒体技术有限公司 | Digital television receiving terminal and method for interaction with user side |
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