CN1481165A - Visual telephone system through ethernet - Google Patents
Visual telephone system through ethernet Download PDFInfo
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- CN1481165A CN1481165A CNA021296154A CN02129615A CN1481165A CN 1481165 A CN1481165 A CN 1481165A CN A021296154 A CNA021296154 A CN A021296154A CN 02129615 A CN02129615 A CN 02129615A CN 1481165 A CN1481165 A CN 1481165A
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Abstract
The system includes a video input unit, an audio input unit, a video display unit and some general telephone modules. The system also includes a main controller, chip of Ethernet controller, Ethernet visual telephone software and Ethernet connection devices. The main controller controls other parts of system to accomplish both-way exchanging and processing data. The video input unit digitizes external images and transmits digitaized data to system. Audio input unit receives voice from talkers. Ethernet visual telephone software encodes digital signals exchanged and processed through main controller, and then transfers coded data to the main controller. The chip of Ethernet controller, and Ethernet connection devices are as a bridge for data exchange and transmission between telephone and Ethernet. Comparing with prior art, the invention has advantages of fast transmission speed, reliable performances and easy to be upgraded.
Description
Technical field
The present invention relates to video-phone system, especially a kind of video-phone system based on Ethernet (Ethernet).
Background technology
Video telephone is used to provide two-way Voice ﹠ Video communication link in communication system, can make the user reach the dual communication effect of the vision and the sense of hearing, has incomparable advantage than plain old telephone, has shown vast potential for future development.Along with International Telecommunications Union tissue (ITU) announcement at the ITU-H.32X series international standard of multimedia visual telephone system, video telephone is at home and abroad developed one after another and has been dropped into use very soon, and its development is popularized rapidly day by day.
Usually, a video telephone uses a video camera together with a video display apparatus, a hands-free speaker phone and a telephony interface.United States Patent (USP) NO.4715059 has described in one based on the video telephone of microprocessor, and wherein Gui Ding hardware generally is applicable to the video telephone communication network.
According to the difference of transmission channel, video telephone can be divided into PSTN (public telephone network) type, ISDN (integrated services digital network) type, tailored version or the like, and the video telephone on every kind of communication network all has its pairing ITU-H.32X standard.With should belong to ISDN (integrated services digital network) type the most widely, as a full-digital network based on public telephone network, ISDN is the abbreviation of Integrated Services Digital Network, it can utilize common telephone wire bidirectional high speed to transmit digital signal, be widely used in multinomial communication service, comprise the transmission of voice, data, image etc., it can carry out communication with other computer network systems such as internet, local area network (LAN) etc.
But be subjected to the restriction of access bandwidth, very slow of the transmission rate of the video telephone data in the conventional art, such as its transmission rate of ISDN has only 128Kbps at the soonest, transmission rate can have a strong impact on the quality of image and the effect of conversation slowly.Along with the development of Ethernet and broadband technology, these problems might obtain good solution route.
Purpose of the present invention is that a kind of video-phone system based on Ethernet is provided, and to remedy many deficiencies of present plain old telephone and some radio phone terminals, increases transmission speed, improves picture quality.
Ethernet belongs to the network lower layer protocol, common physical layer and data link layer operation at osi model.It is modal in the bus-type agreement, and data rate is the coaxial cable system of 10Mbps (mbit/).The relatively cheap and installation easily of this system directly utilizes the BNC-T type connector on each work station network interface card, just cable can be connected to another work station from a work station, finishes the Network Transmission control task.Along with the development of ethernet switch technology, the scale of Ethernet has also had development rapidly, has surmounted traditional local area network (LAN) category.Be linked into building and be broadband ethernet with the optical fiber of gigabit rate with the full interactive network that the Category-5 twisted pair of 100Mbps speed is linked into the user.The existing Ethernet transmitting video data has normally adopted TCP/IP, IPX/SPX contour level communication protocol on the basis of Ethernet.All these all are that good condition has been created in the development of multi-media communication.
Summary of the invention
Embodiment of the present invention are to realize like this, should when containing some universal telephone modules, comprise a video based on the video telephone of Ethernet at least and take in the unit, a master controller, an audio frequency input unit, an ethernet controller wafer, the Ethernet Video Telephone Software, the Ethernet connection device.
Master controller is the maincenter of whole system, and its control of video is taken in two-way exchange and the processing that unit, audio frequency input unit, Ethernet Video Telephone Software, ethernet controller wafer and Ethernet connection device are finished data; Video is taken in the unit and is transferred to system after with the external image digitlization; The audio frequency input unit receives telephone user's sound; The encoding digital signals of Ethernet Video Telephone Software to exchanging and handle through master controller, and then send master controller to, simultaneously to decoding of transmitting by the other side's video telephone through the software kit coded data; The ethernet controller wafer has networking and power management functions, and itself and Ethernet connection device are the bridges that this phone and Ethernet carry out exchanges data and transmission.System carries out video communication by the user of Ethernet and internet, telephone network, other local area network (LAN)s, other communication networks or even telephone wire and other video telephone.
This master controller can be an inserted CPU, at this moment, needs a video display unit such as LCD display, and it also can be exactly a PC with USB interface, then this moment this PC computer monitor promptly can be used as the display unit of this video telephone.
This video take in unit also can be when having the video acquisition function can integrated collection audio frequency, audio frequency promptly when being provided, video also is provided, finish video telephone to the obtaining synchronously of video and audio frequency,, can replace the sound card on the personal computer as a PC Camera who has microphone.
The video-phone system that adopts the present invention to describe, the high speed that can make two ethernet users that this video-phone system is housed carry out voice, data, image etc. is mutual, realizes the visual telephone service on the Ethernet.The present invention compared with prior art, its advantage is as follows:
1, transmission speed is fast, dependable performance
Native system is based upon on the basis of Ethernet, and the broadband width of its access has determined the two-forty of transfer of data, and then has directly influenced the user and carry out the speech quality of voice, data, image etc. and the reliability of performance.
2, upgrading is convenient
Because the realization of major function relies on software to finish in the native system, also mainly carry out easily by the upgrading Video Telephone Software at the function upgrading of native system.
Description of drawings
Read following detailed in conjunction with the accompanying drawings, can understand purpose of the present invention, feature and advantage thereof more significantly, wherein:
Fig. 1 is the schematic diagram of Ethernet video-phone system of the present invention.
Fig. 2 is the schematic diagram of Ethernet Video Telephone Software of the present invention to video and audio frequency input processing.
Fig. 3 is the schematic diagram of Ethernet Video Telephone Software of the present invention to video and audio frequency output processing.
Fig. 4 is that Ethernet Video Telephone Software of the present invention is taken in the schematic diagram that the unit carries out video and audio frequency input processing to the video of band audio frequency input.
Specific embodiment
Hereinafter with reference to accompanying drawing the preferred embodiments of the invention are described.In the following description, those well-known functions or structure will no longer describe in detail, disturb essentiality content of the present invention in order to avoid will mix.
Embodiment 1: the Ethernet video-phone system, form by inserted CPU, camera, audio input device, video display, ethernet controller wafer and Ethernet Video Telephone Software and Ethernet connection device.
Inserted CPU is the maincenter of whole system, and its control camera, audio frequency input unit, Ethernet Video Telephone Software, ethernet controller wafer and Ethernet connection device are finished the two-way exchange and the processing of data; Be transferred to system after the image digitazation of camera with the external world, these digitized image informations provide video input signals as the Data Source of Ethernet Video Telephone Software, obtain with the video of finishing video telephone; Video display shows through the decoded video image of Ethernet Video Telephone Software; The audio frequency input unit receives telephone user's sound; The Ethernet Video Telephone Software is carried out Code And Decode to video and audio frequency, digital video behind the coding and audio frequency are delivered to Ethernet by ethernet controller wafer and Ethernet connection device, system is by Ethernet and internet, telephone network, other local area network (LAN)s, other communication networks or even telephone wire transmission digital video and audio signal are given other video telephone user, corresponding software kit in those user's video telephone is decoded to digital video and the audio frequency received, encoded and decoding digital video and audio frequency so mutual between two users, finish the video communication business between video telephone.
Embodiment 2: the Ethernet video-phone system has the PC of USB interface, the PC Camera that has audio input device, ethernet controller wafer and Ethernet Video Telephone Software and Ethernet connection device and forms.
PC is the maincenter of whole system, and its control PC Camera, Ethernet Video Telephone Software, ethernet controller wafer and Ethernet connection device are finished the two-way exchange and the processing of data; This PC Camera can be when having the video acquisition function can integrated collection audio frequency, audio frequency promptly when being provided, video also is provided, finish video telephone obtaining synchronously to video and audio frequency, as a PCCamera who has microphone, it can replace the sound card on the personal computer, it is transferred to PC after with the external image digitlization, and receives telephone user's sound, will be transferred to PC behind the digitized audio frequency; The encoding digital signals of Ethernet Video Telephone Software to exchanging and handle through the Pc machine, and then send the Pc machine to, simultaneously to decoding of transmitting by the other side's video telephone through the software kit coded data; The ethernet controller wafer has networking and power management functions, and itself and Ethernet connection device are the bridges that this phone and Ethernet carry out exchanges data and transmission.System carries out video communication by the user of Ethernet and internet, telephone network, other local area network (LAN)s, other communication networks or even telephone wire and other video telephone.
The computer monitor of this PC promptly can be used as the video display unit of this video telephone at this moment.
Obviously, Ethernet video-phone system of the present invention, be not limited only to listed utilization in specification and the execution mode, it can be applied to various suitable the present invention's field fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore under the situation of the spirit and scope of the universal that does not deviate from claim and equivalency range and limited, the examples shown that the present invention is not limited to specific details, representational equipment and illustrates here and describe.
Claims (7)
1, a kind of video-phone system based on Ethernet contains video and takes in the unit, an audio frequency input unit, a video display unit, and some universal telephone modules is characterized in that this system also comprises: master controller and
The ethernet controller wafer and
The Ethernet Video Telephone Software and
The Ethernet connection device.
2, system according to claim 1 is characterized in that, described master controller can be an inserted CPU.
3, system according to claim 1 is characterized in that, described master controller also can be exactly a PC with USB interface.
4, system according to claim 3 is characterized in that, the computer monitor of described PC promptly can be used as the display unit of this video telephone.
5, system according to claim 1 is characterized in that, described video is taken in the unit also can integrated collection audio frequency when having the video acquisition function.
6, system according to claim 1, it is characterized in that, the encoding digital signals of Ethernet Video Telephone Software to exchanging and handle through master controller, and then send master controller to, simultaneously to decoding of transmitting by the other side's video telephone through the software kit coded data.
7, system according to claim 1 is characterized in that, native system is based on Ethernet, and then carries out video communication by the user of internet, telephone network, other local area network (LAN)s, other communication networks or even telephone wire and other video telephone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021296154A CN1481165A (en) | 2002-09-04 | 2002-09-04 | Visual telephone system through ethernet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021296154A CN1481165A (en) | 2002-09-04 | 2002-09-04 | Visual telephone system through ethernet |
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| Publication Number | Publication Date |
|---|---|
| CN1481165A true CN1481165A (en) | 2004-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021296154A Pending CN1481165A (en) | 2002-09-04 | 2002-09-04 | Visual telephone system through ethernet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433753C (en) * | 2004-04-23 | 2008-11-12 | 王晖 | A videophone terminal |
| CN101141615B (en) * | 2007-10-16 | 2010-07-14 | 中兴通讯股份有限公司 | External implementing method of session television terminal supporting double currents |
-
2002
- 2002-09-04 CN CNA021296154A patent/CN1481165A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433753C (en) * | 2004-04-23 | 2008-11-12 | 王晖 | A videophone terminal |
| CN101141615B (en) * | 2007-10-16 | 2010-07-14 | 中兴通讯股份有限公司 | External implementing method of session television terminal supporting double currents |
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