CN1383329A - Video confernece system of wireless networking equipment and its implementing method - Google Patents
Video confernece system of wireless networking equipment and its implementing method Download PDFInfo
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- CN1383329A CN1383329A CN 01115509 CN01115509A CN1383329A CN 1383329 A CN1383329 A CN 1383329A CN 01115509 CN01115509 CN 01115509 CN 01115509 A CN01115509 A CN 01115509A CN 1383329 A CN1383329 A CN 1383329A
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Abstract
A video conference system and its realization method of a wireless enter-into-net device include a wireless enter-into-net device used in coupling with an image recording device, a tone recording device, an image output device and a tone output device. The said wireless enter-into-net device contains a first image and tone process unit, a second image and tone process unit, a second image/decoding unit to connect the other end of the user to have inter-video conference via the said wireless enter-into-net device by WLAN.
Description
The present invention relates to a kind of video conferencing system and its implementation, particularly a kind of video conferencing system of web pad and its implementation.
Making rapid progress of modern communications science and technology shortens the distance in space greatly, and the birth of video conferencing system, and more let us is taken leave of the age of speaking or acting on hearsay evidence, reach acoustic phase with, the most beautiful New World of shadow is arranged.Video conferencing system brings the advantage of enterprise, not only can promote office's efficient, shortens the decision-making time-histories, ageing raising simultaneously, and the tediously long traffic time that avoids waste reduces the distance greatly, promotes and links up chance each other; No matter be comprehensive government decree propaganda or global education and training and technology investigation or the like, video conference promotes the efficient of enterprise really greatly.
Briefly, video conferencing system is exactly the video conferencing system 10 that oneself and the other side use same consensus standard, utilize compression and decompression technique that data information, image frame and sound are carried out transmitted in both directions, and this transmission means system is by data circuit 20, as integrated service digital network (Integrated Switched Digital Network; ISDN), asynchronous transfer mode (Asynchronous Transfer Mode; ATM), public's switch type telephone network (PublicSwitched Telephone Network; PSTN), transmission mediums such as T1 special line or satellite transmit (as shown in Figure 1), so the image of this end and sound will appear on the TV 30 of those ends, are called video conferencing system.
Yet existing video conferencing system organizational system cost is too high, and must arrange in pairs or groups computer or TV could be carried out, on the other hand, because by wire transmission online, the demand that so carry out the fixed-site of video conference, can't satisfy separately, use whenever and wherever possible.
Therefore, a kind of low price and getting online without being tethered to a cable to provide the device that carries out video conference to become one then by the subject under discussion paid close attention to.
Main purpose of the present invention is to propose a kind of video conferencing system of simplifying low price, at the actual demand of carrying out video conference, and the demand that satisfies separately, uses whenever and wherever possible, and, reach the purpose of real-time conferencing by the wireless transmission online.
For achieving the above object, we propose a kind of video conferencing system of web pad, wherein comprise at least:
One first video process unit, be used to receive a video-audio signal or a coded data, this video-audio signal is separated into a voice signal and a signal of video signal, and this coded data is separated into a coded voice signal and a coded image signal, and this signal of video signal compressed maybe this coded image signal is decompressed;
One voice coder/decoding unit is used to receive this voice signal or this coded voice signal, and this voice signal is compressed maybe this coded voice signal is decompressed;
One second video process unit, be used to receive from the signal of video signal after this compression of this first video process unit and from the voice signal after this compression of this voice coder/decoding unit, or receive from the coded image signal after this decompression of this first video process unit and from the coded voice signal after this decompression of this voice coder/decoding unit, and the signal of video signal after will compressing and this voice signal export in the WLAN, and the coded image signal after will decompressing and this coded voice signal export in the output device; And
Play end input and this video conference is exported in the transmission end by this web pad.
Wherein this video-audio signal is provided by the image of local side admission device and sound admission device.
Wherein this coded data is provided by this that end of WLAN.
Wherein this voice signal also converts an audio digital signals to by an analog/digital converter.
Wherein this coded voice signal also converts an analog voice signal to by a digital/analog converter.
Wherein this output device also comprises an image output device and a voice output.
Wherein also comprise a communication protocol control unit, be used to connect this WLAN.
Wherein also comprise a microprocessor, be used to handle the control model of these WLAN two end signals, its microprocessor user's interface that also is coupled carries out functional instruction issuing to this microprocessor.
Also be coupled an input unit and a storage device of this second video process unit wherein is used at the usefulness of the required file input of this video conference with access data.
A kind of implementation method of video conferencing system of web pad, the implementation method of wherein playing the meeting of end input video comprises the following step at least:
Receive the compressed signal of those ends that come from a WLAN by web pad;
This compressed signal of those ends is inputed among the PCI Bus of this web pad;
By described first video process unit this compressed signal is separated into an image compressed signal and a compress speech signal;
After the decompress(ion) computing of this first video process unit, the signal of video signal behind the decompress(ion) is sent to an image input of one second video process unit by an image output;
By isolated this compress speech signal of this first video process unit, behind a digital/analog converter, after the decoding computing by one voice coder/decoding unit, the voice signal after the decoding is imported in this second video process unit; And
Export this signal of video signal and this voice signal by an image output device and a voice output.
Wherein also comprise a communication protocol control unit, be used to connect this WLAN.
Wherein also comprise a microprocessor, be used to handle the control model of these WLAN two end signals, its microprocessor user's interface that also is coupled carries out functional instruction issuing to this microprocessor.
Also be coupled an input unit and a storage device of this second video process unit wherein is used at the usefulness of the required file input of this video conference with access data.
A kind of implementation method of video conferencing system of web pad, wherein the implementation method of transmission end output video meeting comprises the following step at least:
Input in one first video process unit of this web pad by image admission device and sound admission device video-audio signal local terminal;
This video-audio signal is separated into a signal of video signal and a voice signal;
After the compaction algorithms of this first video process unit, the image compressed signal after the compression is sent to an image input of one second video process unit by an image output;
By isolated this voice signal of this first video process unit, behind an analog/digital converter, after the coding computing by one voice coder/decoding unit, the coded voice signal behind the coding is imported this second video process unit; And
By a PCI Bus of this web pad, this image compressed signal and this coded voice signal are passed to those ends of a WLAN.
Wherein also comprise a communication protocol control unit, be used to connect this WLAN.
Wherein also comprise a microprocessor, be used to handle the control model of these WLAN two end signals, its microprocessor user's interface that also is coupled carries out functional instruction issuing to this microprocessor.
Also be coupled an input unit and a storage device of this second video process unit wherein is used at the usefulness of the required file input of this video conference with access data.
Relevant detailed content of the present invention and technology are existing as follows with regard to accompanying drawings:
Fig. 1 is existing videoconference system architecture figure;
Fig. 2 is videoconference system architecture figure of the present invention;
Fig. 3 is the videoconference system architecture figure of web pad of the present invention;
Fig. 4 is the implementation method flow chart of broadcast end input video of the present invention meeting; And
Fig. 5 is the implementation method flow chart of transmission end of the present invention output video meeting.
The present invention proposes video conferencing system and its implementation of a kind of web pad, wherein, Fig. 2 is videoconference system architecture figure of the present invention, arbitrary user's a end has a web pad 100, in order to the image admission device 102 that is coupled, a sound admission device 104, an image output device 106 and a voice output 108, wherein, this web pad 100 comprises one first video process unit 110, one second video process unit 120 and one voice coder/decoding unit 130; By a WLAN (WLAN) 140, the user's that desire is linked the other end, the video conference of being undertaken each other by this web pad 100.
The video conference of web pad that the present invention carries 100 mainly is the user's output signal (comprising image and voice signal) that will come from the other end of WLAN (WLAN) 140, hold the image admission device 102 of self to enroll image and the voice signal that device 104 is imported with the user with sound, by first video process unit 110, respectively with image and voice signal separate processes, because in order to satisfy the audio-visual result of broadcast of (Real Time) in real time, especially signal of video signal is exported to second video process unit 120, with the pressure/decompression operation of further processing signal of video signal; And after exporting voice signal to voice coder/decoding unit 130, input to second video process unit 120 again, to reach audio-visual real-time broadcast and transmission effect synchronously.
Please continue with reference to figure 3, be the videoconference system architecture figure of web pad of the present invention.The first above-mentioned video process unit 110 is to accept the device of eight (bit) data (Data) form of any output and input CCIR (Consultative Committee on International Radio (CCIR)) 601/656 standard, export a CCIR 656 forms at this with a digital camera, eight (bit), the YUV of 4:2:2 (YUV) data (Data) are example, when first video process unit 110 receives a complete video-audio signal or a coded data, by a video conferencing system image coding standard (H.261 or H.263), this signal of video signal is compressed (coding) and decompress (decoding), again by a PCI Bus (peripheral element extension interface bus), be stored into an Installed System Memory (SDRAM) 122 through second video process unit 120, by image output device 106 and voice output 108, the video-audio signal that decompresses is done to play timely again; Data after perhaps will compressing transmit video-audio signal after the compression to another host side by a WLAN (WLAN) 140.
When the signal of video signal stream (H.261 agreement or H.263 agreement) of second video process unit 120 after this pressure/decompression receives data, be to transmit by a PCI Bus, and must its packed data after the pressures/decompression from this signal of video signal stream and decompress(ion) after imaged frame, and leave in the Installed System Memory (SDRAM) 122, wherein, this pressure/gunzip is by a variable length code (VariableLength Decode; VLD) processing unit, and encoded and finish with huffman coding method (Huffman coding); In addition, native system also provides an input unit 124 (as keyboard or mouse) and a storage device 126 (as floppy drive or CD-ROM drive), in order at the usefulness of the required file input of video conference with access data.
The implementation method of the video conference of the web pad 100 that the present invention is given, signal (comprising image and the voice signal) broadcast in real time that can be divided into the two ends that come from WLAN (WLAN) 140 describes with transmission:
Wherein Fig. 4 is the implementation method flow chart of broadcast end input video of the present invention meeting, when receiving the signal (step 400) of those ends that come from WLAN (WLAN) 140 by web pad 100, be that communication protocol control unit 150 by this web pad 100 is linked, and be used for handling the control model of two end signals by a microprocessor 160, and also provide user's interface 162 (as hot key) that this microprocessor 160 is carried out functional instruction issuing, after treating that connection is finished, the signal of those ends is inputed to (comprising image and voice signal) among the PCI Bus of web pad (step 410), and pass through first video process unit 110 with image and voice signal separate processes (step 420), after the decompress(ion) computing of first video process unit 110, respectively signal of video signal is sent to the image input 121 (step 430) of second video process unit 120 by image output 111; At this moment, by first video process unit, 110 isolated voice signals, behind a digital/analog converter 135, after the decoding computing by one voice coder/decoding unit 130, voice signal after the decoding is imported second video process unit 120 (step 440), by image output device 106 and voice output 108 outputs, reach the effect (step 450) of real-time broadcast again.
Fig. 5 is the implementation method flow chart of transmission end of the present invention output video meeting, when web pad 100 transmission come from the signal of local side (Local), be to input in first video process unit 110 (step 500) by image admission device 102 and sound admission device 104 video-audio signal with local terminal (Local), with image and voice signal separate processes (step 510), after the compaction algorithms of first video process unit 110, the signal of video signal after will compressing respectively is sent to the image input 121 (step 520) of second video process unit 120 by image output 111; At this moment, by first video process unit, 110 isolated voice signals, behind an analog/digital converter 136, after the coding computing by one voice coder/decoding unit 130, voice signal behind the coding is imported second video process unit 120 (step 530), by a PCI Bus signal is passed to those ends (step 540) of WLAN (WLAN) 140 at last again.
Claims (20)
1. the video conferencing system of a web pad wherein comprises at least:
One first video process unit, be used to receive a video-audio signal or a coded data, this video-audio signal is separated into a voice signal and a signal of video signal, and this coded data is separated into a coded voice signal and a coded image signal, and this signal of video signal compressed maybe this coded image signal is decompressed;
One voice coder/decoding unit is used to receive this voice signal or this coded voice signal, and this voice signal is compressed maybe this coded voice signal is decompressed;
One second video process unit, be used to receive from the signal of video signal after this compression of this first video process unit and from the voice signal after this compression of this voice coder/decoding unit, or receive from the coded image signal after this decompression of this first video process unit and from the coded voice signal after this decompression of this voice coder/decoding unit, and the signal of video signal after will compressing and this voice signal export in the WLAN, and the coded image signal after will decompressing and this coded voice signal export in the output device; And
Play end input and this video conference is exported in the transmission end by this web pad.
2. the video conferencing system of web pad as claimed in claim 1, wherein this video-audio signal is that image admission device and sound admission device by local side provided.
3. the video conferencing system of web pad as claimed in claim 1, wherein this coded data is provided by this that end of WLAN.
4. the video conferencing system of web pad as claimed in claim 1, wherein this voice signal also converts an audio digital signals to by an analog/digital converter.
5. the video conferencing system of web pad as claimed in claim 1, wherein this coded voice signal also converts an analog voice signal to by a digital/analog converter.
6. the video conferencing system of web pad as claimed in claim 1, wherein this output device also comprises an image output device and a voice output.
7. the video conferencing system of web pad as claimed in claim 1 wherein also comprises a communication protocol control unit, is used to connect this WLAN.
8. the video conferencing system of web pad as claimed in claim 1 wherein also comprises a microprocessor, is used to handle the control model of these WLAN two end signals.
9. the video conferencing system of web pad as claimed in claim 8, wherein this microprocessor user's interface that also is coupled carries out functional instruction issuing to this microprocessor.
10. the video conferencing system of web pad as claimed in claim 1, also be coupled an input unit and a storage device of this second video process unit wherein is used at the usefulness of the required file input of this video conference with access data.
11. the implementation method of the video conferencing system of a web pad as claimed in claim 1, the implementation method of wherein playing the meeting of end input video comprises the following step at least:
Receive the compressed signal of those ends that come from a WLAN by web pad;
This compressed signal of those ends is inputed among the PCI Bus of this web pad;
By described first video process unit this compressed signal is separated into an image compressed signal and a compress speech signal;
After the decompress(ion) computing of this first video process unit, the signal of video signal behind the decompress(ion) is sent to an image input of one second video process unit by an image output;
By isolated this compress speech signal of this first video process unit, behind a digital/analog converter, after the decoding computing by one voice coder/decoding unit, the voice signal after the decoding is imported in this second video process unit; And
Export this signal of video signal and this voice signal by an image output device and a voice output.
12. the implementation method of the video conferencing system of web pad as claimed in claim 11 wherein also comprises a communication protocol control unit, is used to connect this WLAN.
13. the implementation method of the video conferencing system of web pad as claimed in claim 11 wherein also comprises a microprocessor, is used to handle the control model of these WLAN two end signals.
14. the implementation method of the video conferencing system of web pad as claimed in claim 13, wherein this microprocessor user's interface that also is coupled carries out functional instruction issuing to this microprocessor.
15. the implementation method of the video conferencing system of web pad as claimed in claim 11, also be coupled an input unit and a storage device of this second video process unit wherein is used at the usefulness of the required file input of this video conference with access data.
16. the implementation method of the video conferencing system of a web pad as claimed in claim 1, wherein the implementation method of transmission end output video meeting comprises the following step at least:
Input in one first video process unit of this web pad by image admission device and sound admission device video-audio signal local terminal;
This video-audio signal is separated into a signal of video signal and a voice signal;
After the compaction algorithms of this first video process unit, the image compressed signal after the compression is sent to an image input of one second video process unit by an image output;
By isolated this voice signal of this first video process unit, behind an analog/digital converter, after the coding computing by one voice coder/decoding unit, the coded voice signal behind the coding is imported this second video process unit; And
By a PCI Bus of this web pad, this image compressed signal and this coded voice signal are passed to those ends of a WLAN.
17. the implementation method of the video conferencing system of web pad as claimed in claim 16 wherein also comprises a communication protocol control unit, is used to connect this WLAN.
18. the implementation method of the video conferencing system of web pad as claimed in claim 16 wherein also comprises a microprocessor, is used to handle the control model of these WLAN two end signals.
19. the implementation method of the video conferencing system of web pad as claimed in claim 18, wherein this microprocessor user's interface that also is coupled carries out functional instruction issuing to this microprocessor.
20. the implementation method of the video conferencing system of web pad as claimed in claim 16, also be coupled an input unit and a storage device of this second video process unit wherein is used at the usefulness of the required file input of this video conference with access data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 01115509 CN1383329A (en) | 2001-04-26 | 2001-04-26 | Video confernece system of wireless networking equipment and its implementing method |
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| CN 01115509 CN1383329A (en) | 2001-04-26 | 2001-04-26 | Video confernece system of wireless networking equipment and its implementing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401764C (en) * | 2003-11-19 | 2008-07-09 | Lg电子有限公司 | Video-conferencing system using mobile terminal device and method for implementing the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401764C (en) * | 2003-11-19 | 2008-07-09 | Lg电子有限公司 | Video-conferencing system using mobile terminal device and method for implementing the same |
| US7792064B2 (en) | 2003-11-19 | 2010-09-07 | Lg Electronics Inc. | Video-conferencing system using mobile terminal device and method for implementing the same |
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