CN101600117A - Multimedia wireless transmission system - Google Patents
Multimedia wireless transmission system Download PDFInfo
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- CN101600117A CN101600117A CNA2008100384542A CN200810038454A CN101600117A CN 101600117 A CN101600117 A CN 101600117A CN A2008100384542 A CNA2008100384542 A CN A2008100384542A CN 200810038454 A CN200810038454 A CN 200810038454A CN 101600117 A CN101600117 A CN 101600117A
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Abstract
A kind of multimedia wireless transmission system adopts the 802.11n agreement to carry out wireless transmission and reception, and operating frequency can be between 4G or 5G; Up to the physical layer transmission speed of 600Mb/s, need to support the application of high data rate, and reduce battery consumption by the time minimization of the stream that will transmit and receive data; The present invention not only can solve beyond the picture transmission of high definition, can also realize the conversion between analog signal and the analog signal, the conversion between analog signal and the digital signal.
Description
Technical field
The present invention relates to a kind of multi-media radio transmission, relate in particular to this multi-media radio transport module syndeton.
Background technology
The multi-media radio system for transmitting all adopts a kind of interface to transmit in the prior art, i.e. VGA transmission, VGA receive, and YPbPr (color difference signal) sends, YPbPr receives.The wireless transmission of this analog signal, owing to consider the problem of bandwidth, so the resolution in the source of wireless transmission can be very not high, it can only be the film source of SD, and can not become another kind of analog signal from a kind of analog signal conversion, and can not realize the VGA emission, become the YPbPr signal after receiving; That is to say receive after output signal more single; And the frequency of its work generally all is 2.4G, and the distance of transmission is closer.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of multimedia wireless transmission system, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention includes: audio frequency and video source transmitting terminal; Described audio frequency and video source comprises following one or several: HDMI (High Definition Multimedia Interface) (HDMI), digital display interface standard (Displayport), Video Graphics Array/sound (VGA/AUDIO), color difference signal/sound (YPbPr/AUDIO) and digital video signal/sound (RGB/AUDIO); Described HDMI (High Definition Multimedia Interface), the digital display interface standard, Video Graphics Array/sound, color difference signal/sound and digital video signal/sound pass through the acceptance (HDMI Reciever) of HDMI (High Definition Multimedia Interface) respectively, the acceptance of digital display interface standard (Displayport Reciever), Video Graphics Array analog-to-digital conversion/sound (VGA ADC/AUDIO), color difference signal analog-to-digital conversion/sound (YPbPr ADC/AUDIO) and digital video signal/sound (RGB/AUDIO) are transferred to digital video signal/sound (RGB/AUDIO); Digital video signal/sound (RGB/AUDIO) is through application-specific integrated circuit (ASIC) (ASIC) or programmable gate array (FPGA) conversion wireless transmission; Receiving terminal connects digital video signal/sound (RGB/AUDIO) with data through application-specific integrated circuit (ASIC) (ASIC) or programmable gate array (FPGA); Digital video signal/sound is through the transmission (HDMI Transmitter) of HDMI (High Definition Multimedia Interface), the transmission of digital display interface standard (Displayport Transmitter), Video Graphics Array digital-to-analogue conversion/sound (VGA DAC/AUDIO) or color difference signal digital-to-analogue conversion/sound (YPbPr DAC/AUDIO) conversion become a kind of or several terminal equipment that is input to of column signal down: HDMI (High Definition Multimedia Interface) (HDMI), digital display interface standard (Displayport), Video Graphics Array/sound (VGA/AUDIO), color difference signal/sound (YPbPr/AUDIO); Described digital video signal/sound (RGB/AUDIO) is directly inputted to terminal equipment.
Compared with prior art, the invention has the beneficial effects as follows: not only can solve beyond the picture transmission of high definition, can also realize the conversion between analog signal and the analog signal, the conversion between analog signal and the digital signal.
Description of drawings
Fig. 1 is a module map of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
As seen from Figure 1: the present invention includes: audio frequency and video source transmitting terminal; Described audio frequency and video source comprises following one or several: HDMI (High Definition Multimedia Interface) (HDMI), digital display interface standard (Displayport), Video Graphics Array/sound (VGA/AUDIO), color difference signal/sound (YPbPr/AUDIO) and digital video signal/sound (RGB/AUDIO); Described HDMI (High Definition Multimedia Interface), the digital display interface standard, Video Graphics Array/sound, color difference signal/sound and digital video signal/sound pass through the acceptance (HDMI Reciever) of HDMI (High Definition Multimedia Interface) respectively, the acceptance of digital display interface standard (Displayport Reciever), Video Graphics Array analog-to-digital conversion/sound (VGAADC/AUDIO), color difference signal analog-to-digital conversion/sound (YPbPr ADC/AUDIO) and digital video signal/sound (RGB/AUDIO) are transferred to digital video signal/sound (RGB/AUDIO); Digital video signal/sound (RGB/AUDIO) is through application-specific integrated circuit (ASIC) (ASIC) or programmable gate array (FPGA) conversion wireless transmission; Receiving terminal connects digital video signal/sound (RGB/AUDIO) with data through application-specific integrated circuit (ASIC) (ASIC) or programmable gate array (FPGA); Digital video signal/sound is through the transmission (HDMI Transmitter) of HDMI (High Definition Multimedia Interface), the transmission of digital display interface standard (Displayport Transmitter), Video Graphics Array digital-to-analogue conversion/sound (VGA DAC/AUDIO) or color difference signal digital-to-analogue conversion/sound (YPbPr DAC/AUDIO) conversion become a kind of or several terminal equipment that is input to of column signal down: HDMI (High Definition Multimedia Interface) (HDMI), digital display interface standard (Displayport), Video Graphics Array/sound (VGA/AUDIO), color difference signal/sound (YPbPr/AUDIO); Described digital video signal/sound (RGB/AUDIO) is directly inputted to terminal equipment;
Described wireless transmission end is the 802.11n agreement to the transmission of receiving terminal.
ASIC among the present invention is a prior art products.
What select for use for transmitting terminal ASIC is the AMN2210.24 of AMIMON company or 30 digital rgb; Digital audio is sent to AMN2210 together, pass through descending baseband modulation module then, sound and voice modulation are arrived together, the digital signal that modulates is sent to a DAC (conversion of digital to analogy) module, digital signal is become base-band analog signal, so that the rear end emission.Give the transmitter module of back base-band analog signal,, adopt 802.11n to launch data through the conversion of signal.
Also the AMN2210 of the AMIMON company that selects for use for the ASIC of receiving terminal.Also be Data Receiving to be got off by the agreement of 802.11n, conversion of signals is become the analog signal of base band, the analog signal transmission of base band is to AMN2210, at first will be through an ADC (analog signal is to the conversion of digital signal), the digital signal that conversion is good, be transferred to next up base band demodulating, demodulate digital rgb and digital audio and video signals.Transmitter (transmission chip) conversion that the digital video-audio signal is given the back goes out corresponding analog signal or HDMI signal, perhaps Displayport signal.
Emerging 802.11n standard has the speed of the highest 600Mbps, is acknowledged as follow-on radio network technique, and application required speed, scope and the reliability the most responsive to bandwidth can provide support.Aspect coverage, 802.11n adopts intelligent antenna technology, by the aerial array that many groups stand-alone antenna is formed, can dynamically adjust wave beam, guarantees to allow LAN subscriber receive stable signal, and can reduce the interference of other signal.Therefore its coverage can expand several square kilometres to, and the local area network (LAN) mobility is greatly improved.Aspect compatible, 802.11n adopted a kind of software and radio technique, it is a complete programmable hardware platform, makes the base station of different system and terminal to realize intercommunication and compatibility by the different software of this platform, and this makes that the compatibility of local area network (LAN) is greatly improved.
The present invention can realize the wireless transmission of VGA, YPbPr, Displayport, HDMI, if adopt and traditional come wireless transmission and reception, because the restriction of bandwidth, can only reach the transmission rate of 54Mb/s such as the 802.11a/g agreement, can only be limited to the transmission of SD, distance is also very closer.The present invention adopts the 802.11n agreement to carry out wireless transmission and reception, and operating frequency can be between 4G or 5G, and Chuan Shu distance has increased greatly so; Up to the physical layer transmission speed of 600Mb/s, need to support the application of high data rate, and reduce battery consumption by the time minimization of the stream that will transmit and receive data.The present invention can also realize the conversion between analog signal and the analog signal, the conversion between analog signal and the digital signal except the picture transmission that can solve high definition.For example,, after wireless receiving gets off so, VGA, YPbPr signal can be converted to, also HDMI can be converted to, the Displayport signal if transmission is the VGA signal; If what send is the HDMI signal, after wireless receiving gets off so, can convert YPbPr to, the VGA signal also can convert HDMI to, the Displayport signal.
The transmission source can be a set-top box among the present invention, DVD, and computer has the media player of HDMI, DISPLAYPORT, VGA, YPbPr interface.The analog signal VGA that data source is sent, YPbPr is through an ADC, change into digital rgb, voice data is loaded into the video signal to get on, carry out multiplexed to video data, these Voice ﹠ Video data are not carried out encryption, and the data of handling well are transferred to processor through RGB/AUDIO, such as application-specific integrated circuit (ASIC) (ASIC) or field programmable gate array (FPGA).Processor is handled data, so that data are sent.The data of handling well send data through transmitting antenna through multichannel, reflector is launched with the agreement of 802.11n.
If that data source is come is HDMI or Displayport, data source is come later on through a HDMI Transmitter or Displayport Transmitter so, data transaction is become digital rgb, voice data is loaded into the video signal to get on, carry out multiplexed to video data, these Voice ﹠ Video data are not carried out encryption, and the data of handling well are transferred to processor through RGB/AUDIO.Processor is handled data, so that data are sent.The data of handling well are through sending data through transmitting antenna through multichannel, reflector is launched with the agreement of 802.11n.HDMI is being carried out in the processing procedure not to its data decryption.If what data source was come is digital rgb, so just only needing that voice data is loaded into the video signal gets on, carry out multiplexed to video data, these Voice ﹠ Video data are not carried out encryption, the data of handling well are transferred to processor through RGB/AUDIO, processor is handled data, so that data are sent.The data of handling well send data through transmitting antenna through multichannel, reflector is launched with the agreement of 802.11n.
Can be integrated into same IC to these two parts for VGA/AUDIO, YPbPr/AUDIO, for example application-specific integrated circuit (ASIC) (ASIC) or field programmable gate array (FPGA), perhaps this three is partially integrated into same IC VGA/AUDIO, YPbPr/AUDIO, FPGA, for example application-specific integrated circuit (ASIC) (ASIC) or field programmable gate array (FPGA), perhaps this is four together partly integrated VGA/AUDIO, YPbPr/AUDIO, FPGA, wireless transmission, for example application-specific integrated circuit (ASIC) (ASIC) or field programmable gate array (FPGA).
Receiving terminal:
The data of launching are through receiving, and the agreement of work also is 802.11n.The data that receive are carried out data processing through ASIC or FPGA, isolate the multiplexed signals of digital video and audio frequency, are transferred to HDMI Transmitter through RGB/AUDIO and convert the HDMI signal to; Perhaps be transferred to Displayport Transmitter and convert the Displayport signal to; Perhaps be transferred to VGA vision signal and voice signal that VGADAC/AUDIO converts simulation to; Perhaps be transferred to YPbPr signal and voice signal that YPbPrDAC/AUDIO converts simulation to, be transferred to terminal presentation facility again, comprise PDP, CRT, LCD also has display devices such as projecting apparatus.Can be integrated on same the IC for VGA DAC/AUDIO and these two parts of YPbPr DAC/AUDIO, these two parts of wireless receiving and ASIC or FPGA also can be integrated together, perhaps VGA DAC/AUDIO, YPbPrDAC/AUDIO, wireless receiving and ASIC or FPGA are integrated together, for example application-specific integrated circuit (ASIC) (ASIC) or field programmable gate array (FPGA).
Claims (2)
1. a multimedia wireless transmission system comprises: audio frequency and video source transmitting terminal; Described audio frequency and video source comprises following one or several: HDMI (High Definition Multimedia Interface), digital display interface standard, Video Graphics Array/sound, color difference signal/sound and digital video signal/sound; It is characterized in that: described HDMI (High Definition Multimedia Interface), digital display interface standard, Video Graphics Array/sound, color difference signal/sound and digital video signal/sound arrive digital video signal/sound through the acceptance of HDMI (High Definition Multimedia Interface), acceptance, Video Graphics Array analog-to-digital conversion/sound, color difference signal analog-to-digital conversion/sound and the digital video signal/transfer voice of digital display interface standard respectively; Digital video signal/sound is through application-specific integrated circuit (ASIC) or programmable gate array conversion wireless transmission; Receiving terminal connects digital video signal/sound with data through application-specific integrated circuit (ASIC) or programmable gate array; Digital video signal/sound becomes a kind of or several terminal equipment that is input to of column signal down through the transmission of HDMI (High Definition Multimedia Interface), transmission, Video Graphics Array digital-to-analogue conversion/sound or the color difference signal digital-to-analogue conversion of digital display interface standard/sound conversion: HDMI (High Definition Multimedia Interface), digital display interface standard, Video Graphics Array/sound, color difference signal/sound; Described digital video signal/sound is directly inputted to terminal equipment.
2. multimedia wireless transmission system according to claim 1 is characterized in that: described wireless transmission end is the 802.11n agreement to the transmission of receiving terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100384542A CN101600117A (en) | 2008-06-03 | 2008-06-03 | Multimedia wireless transmission system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100384542A CN101600117A (en) | 2008-06-03 | 2008-06-03 | Multimedia wireless transmission system |
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| CN101600117A true CN101600117A (en) | 2009-12-09 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215370A (en) * | 2011-06-03 | 2011-10-12 | 杭州芯赛微电子有限公司 | 802.11n-protocol-based wireless video interphone system |
| CN102395018A (en) * | 2011-09-28 | 2012-03-28 | 上海华勤通讯技术有限公司 | Wireless conversion device of multimedia interface |
| CN102970597A (en) * | 2012-11-20 | 2013-03-13 | 深圳市同洲电子股份有限公司 | Audio and video transmission method and digital television terminal |
| CN103281502A (en) * | 2013-06-14 | 2013-09-04 | 南京欧帝科技有限公司 | Quadruple-high-definition liquid crystal color screen input interface |
| CN103369310A (en) * | 2012-03-26 | 2013-10-23 | 杭州竣颐科技有限公司 | Multimedia wireless transmission method |
| CN103856801A (en) * | 2012-12-04 | 2014-06-11 | 深圳市同洲电子股份有限公司 | Audio and video transmission method and digital television terminal |
| CN104486575A (en) * | 2014-12-24 | 2015-04-01 | 福建捷联电子有限公司 | Simple, wireless, all-in-one and high-definition display device and control method thereof |
| CN106790257A (en) * | 2017-01-24 | 2017-05-31 | 深圳市朗强科技有限公司 | IP-based multimedia transmission method and system |
| CN112039605A (en) * | 2020-09-04 | 2020-12-04 | 武汉北斗宇程科技有限公司 | Software radio-based transceiving system and video transmission method |
| WO2023236343A1 (en) * | 2022-06-10 | 2023-12-14 | 深圳市昊一源科技有限公司 | Image transmission device |
-
2008
- 2008-06-03 CN CNA2008100384542A patent/CN101600117A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215370A (en) * | 2011-06-03 | 2011-10-12 | 杭州芯赛微电子有限公司 | 802.11n-protocol-based wireless video interphone system |
| CN102395018A (en) * | 2011-09-28 | 2012-03-28 | 上海华勤通讯技术有限公司 | Wireless conversion device of multimedia interface |
| CN103369310A (en) * | 2012-03-26 | 2013-10-23 | 杭州竣颐科技有限公司 | Multimedia wireless transmission method |
| CN102970597A (en) * | 2012-11-20 | 2013-03-13 | 深圳市同洲电子股份有限公司 | Audio and video transmission method and digital television terminal |
| CN103856801A (en) * | 2012-12-04 | 2014-06-11 | 深圳市同洲电子股份有限公司 | Audio and video transmission method and digital television terminal |
| CN103281502A (en) * | 2013-06-14 | 2013-09-04 | 南京欧帝科技有限公司 | Quadruple-high-definition liquid crystal color screen input interface |
| CN104486575A (en) * | 2014-12-24 | 2015-04-01 | 福建捷联电子有限公司 | Simple, wireless, all-in-one and high-definition display device and control method thereof |
| CN104486575B (en) * | 2014-12-24 | 2018-01-02 | 福建捷联电子有限公司 | A kind of control method of the extremely simple WirelessHD display device of many integration |
| CN106790257A (en) * | 2017-01-24 | 2017-05-31 | 深圳市朗强科技有限公司 | IP-based multimedia transmission method and system |
| CN112039605A (en) * | 2020-09-04 | 2020-12-04 | 武汉北斗宇程科技有限公司 | Software radio-based transceiving system and video transmission method |
| CN112039605B (en) * | 2020-09-04 | 2021-09-10 | 武汉北斗宇程科技有限公司 | Software radio-based transceiving system and video transmission method |
| WO2023236343A1 (en) * | 2022-06-10 | 2023-12-14 | 深圳市昊一源科技有限公司 | Image transmission device |
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Open date: 20091209 |