CN2500054Y - Visual telephone - Google Patents
Visual telephone Download PDFInfo
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- CN2500054Y CN2500054Y CN 01265774 CN01265774U CN2500054Y CN 2500054 Y CN2500054 Y CN 2500054Y CN 01265774 CN01265774 CN 01265774 CN 01265774 U CN01265774 U CN 01265774U CN 2500054 Y CN2500054 Y CN 2500054Y
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Abstract
A videophone applied to PSTN comprises an image sensor, a video encoding/decoding circuit, a liquid crystal display and a drive circuit, a central processing unit, an audio encoding/decoding circuit, a system control circuit, a modem, a FLASH, a video output port, an audio input and output port, a function-selection press-key group, and a PSTN interface. The utility model can be used in cooperation with normal double-audio telephones and televisions and has all functions of videophones, with greatly reduced cost, small power consumption, simple structure, small volume, and portability.
Description
Technical field
The utility model is a kind of novel video telephone, and it and common double audio telephone are used, and have the repertoire of video telephone, can realize voice and image transmitted in both directions simultaneously, is applicable to PSTN (public switch telephone network).The utlity model has video output, be connected with television set, can be with the large screen display of television set as video telephone.
Background technology
Along with economy and development of science and technology, the information interchange amount is increasing, and people pursue the ageing and accuracy of information more, and the information interchange mode of " only hear its sound and lose its people " can't satisfy people's demand, video telephone therefore occurred.Video telephone has two kinds of main realization approach.A kind of approach depends on computer and the Internet, adopts computer camera to cooperate software to realize.Though it is not high that the user buys the expense of computer video telephone, must buy earlier a well behaved computer, could carry out video call by the Internet, its whole cost height only is applicable to computer user, user that can computation can't use.Another kind of approach adopts independently, and video telephone transmits by PSTN or N-ISDN (integrated services digital network).The PSTN video telephone makes full use of existing communication network transmission, and is easy and simple to handle, and the user can learn to use by reading specification.This series products is external representational to be U.S. AT﹠amp; Manufacturer such as T, German SIEMENS, domestic typical case's representative has manufacturers such as Song Ri, foresight.This class video telephone mainly is made up of imageing sensor, video, audio coding and decoding system, dual tone phone circuit and modulator-demodulator, wherein imageing sensor uses the CCD device that power consumption is big and price is expensive, structure adopts integral type, make their product systems constitute complexity, analog circuit causes noise big with the easy mutual interference mutually of digital circuit, and equipment is huge, power consumption is big, cost an arm and a leg, not portable, the existing telephone set resource of user can not be utilized.
The utility model technology contents
The utility model provides a kind of low cost, the novel split type video telephone of small size.The utility model and common double audio telephone are used, have the repertoire of video telephone, can realize voice and image transmitted in both directions simultaneously.The utlity model has video output, can be with the large screen display of television set as video telephone.
Video telephone comprises imageing sensor, coding and decoding video circuit, LCD and drive circuit, central processing unit, audio coding decoding circuit, system, control circuit, modulator-demodulator, flash memory FLASH, video output, audio frequency input/output port, function selecting button, PSTN interface.Central processing unit is connected with coding and decoding video circuit, audio coding decoding circuit, system, control circuit, modulator-demodulator, FLASH respectively; The coding and decoding video circuit is connected with imageing sensor, LCD and drive circuit, video output, FLASH; System, control circuit is connected with FLASH, modulator-demodulator, function selecting key groups; Modulator-demodulator is connected with audio coding decoding circuit, audio frequency input/output port, PSTN interface.
The common double audio telephone is connected with video telephone, calls out with plain old telephone input the other side number, after the connection, both call sides can be conversed immediately; After confirming that both sides have the PSTN video telephone set, to image model, both sides can carry out video call with mode transitions.
Imageing sensor of the present utility model can adopt advanced solid state image sensor---CMOS (complementary mos device) imageing sensor or CCD (charge coupled device) imageing sensor.Cmos image sensor is integrated in image photosensitive array and signal processing circuit on the wafer, directly exports the yuv format video data, the integrated level height, and volume is little, low in energy consumption, the simplification product structure, reduces production costs the product reliability height.Ccd image sensor is because the manufacture craft difference, the outer plus signal treatment circuit in addition of image sensitive chip, and integrated level is low, and volume is big, power consumption big (be approximately CMOS 10 times), price is expensive, increases the product structure complexity, increase production cost, but highly sensitive, picture quality is good.
The common double audio telephone that is connected with the utility model can be simple bread producing machine, also can be contain hands-free, redial, the telephone set of sophisticated functions such as caller identification.
The utility model with the body portion of common double voice frequency telephone and video telephone from, only comprise the main body of video telephone, therefore simple in structure, the existing video telephone of volume ratio is little 1 to 2 times, in light weight, is easy to carry 1/3 to 1/2 of the just existing video telephone of cost.When the utility model links to each other with any common double voice frequency telephone, just all functions that have existing video telephone, the user is used the utility model and existing common double voice frequency telephone and just constitutes video telephone, economize on resources, expenditure cost reduces greatly, even the user buys a new common double voice frequency telephone and a utility model and is used, overall expenditure is also than buying an existing video telephone much less.
Compare with existing video telephone, the utility model adopts split-type design, and common double voice frequency telephone circuit is separated with main frame, reduces the interference between analog circuit and digital circuit, improves signal to noise ratio, has improved product reliability.
The utility model also can link to each other with television set, with the large screen display of television set as video telephone.If the user need show large-size images, can video telephone be linked to each other with television set by video output, the image of video telephone just is presented on the television set.
Description of drawings
Fig. 1 electric functional-block diagram of the present utility model.
The schematic diagram of Fig. 2 coding and decoding video circuit.
The schematic diagram of Fig. 3 central processing unit.
The schematic diagram of Fig. 4 audio coding decoding circuit.
The schematic diagram of Fig. 5 system, control circuit.
Embodiment
Fig. 1 is the electric functional-block diagram of embodiment of the present utility model, comprises imageing sensor 1, coding and decoding video circuit 2, LCD and drive circuit 3, central processing unit 4, audio coding decoding circuit 5, system, control circuit 6, modulator-demodulator 7, FLASH 8, video output 9, audio frequency input/output port 10, PSTN interface 11, function selecting key groups 12.Central processing unit 4 is connected with coding and decoding video circuit 2, audio coding decoding circuit 5, system, control circuit 6, modulator-demodulator 7, FLASH 8 respectively; Coding and decoding video circuit 2 is connected with imageing sensor 1, LCD and drive circuit 3, video output 9, FLASH 8.System, control circuit 6 is connected with FLASH 8, modulator-demodulator 7, function selecting key groups 12.Modulator-demodulator 7 is connected with audio coding decoding circuit 5, audio frequency input/output port 10, PSTN interface 11 links to each other.Audio frequency input/output port 10 is connected with the common double voice frequency telephone.
Fig. 2 is the schematic diagram of coding and decoding video circuit, the coding and decoding video circuit adopts the W9961CF chip, its annexation is as follows: the 16 digital video data wires of W9961CF (Y0, Y1, Y2, Y3, Y4, Y5, Y6, Y7, UV0, UV1, UV2, UV3, UV4, UV5, UV6, UV7) are corresponding continuous with 16 output data lines of imageing sensor 1.The video control line of W9961CF (VICLK, VS, HS, GPI00, GPI01) links to each other with the corresponding control line of imageing sensor 1.32 storage data wires (MD0, MD1, MD2, MD3, MD4, MD5, MD6, MD7, MD8, MD9, MD10, MD11, MD12, MD13, MD14, MD15, MD16, MD17, MD18, MD19, MD20, MD21, MD22, MD23, MD24, MD25, MD26, MD27, MD28, MD29, MD30, MD31) of W9961CF link to each other with 32 position datawires of SDRAM memory 14 are corresponding.11 memory address lines (MA0, MA1, MA2, MA3, MA4, MA5, MA6, MA7, MA8, MA9, MA10) of W9961CF are corresponding with 11 bit address lines of SDRAM memory 14 to link to each other.The storage control line of W9961CF (MCS0#, DQM3, DQM2, DQM1, DQM0, MCKE, MWE#, MRAS#, MCAS#, MBA, MCLK) links to each other with the corresponding control line of SDRAM memory 14.The 32 bit address data multiplex lines (AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, AD8, AD9, AD10, AD11, AD12, AD13, AD14, AD15, AD16, AD17, AD18, AD19, AD20, AD21, AD22, AD23, AD24, AD25, AD26, AD27, AD28, AD29, AD30, AD31) of W9961CF are corresponding with 32 digital video address date multiplexing lines of central processing unit 4 to link to each other.The 27 bit address data multiplex lines (AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, AD8, AD9, AD10, AD11, AD12, AD13, AD14, AD15, AD16, AD17, AD18, AD19, AD20, AD21, AD22, AD23, AD24, AD25, AD26) of W9961CF are corresponding with the 27 digital video address date multiplexing lines of FLASH 8 to link to each other.The control line of W9961CF (CBE#3, CBE#2, CBE#1, CBE#0, PAR, FRAME#, TRDY#, IRDY#, STOP#, DEVSEL#, AD28, PERR#, SERR#, CLKU, RST, INTC, PCLK) links to each other with the corresponding control line of central processing unit 4.The eight digital video data wires (Y0, Y1, Y2, Y3, Y4, Y5, Y6, Y7) of W9961CF are corresponding with eight digital video data wires of central processing unit 4 to link to each other.Eight output video data wires (LP0, LP1, LP2, LP3, LP4, LP5, LP6, LP7) of W9961CF are corresponding with eight digital video data wires of LCD and drive circuit 3 to link to each other.The control line of W9961CF (LPCLK, DEM, LHS, LVS) links to each other with the corresponding control line of LCD and drive circuit 3.The output video data wire VG of W9961CF links to each other with video output 9.
Fig. 3 is the schematic diagram of central processing unit, central processing unit adopts the W90221F chip, and its annexation is as follows: the 32 digital video address date multiplexing lines (AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, AD8, AD9, AD10, AD11, AD12, AD13, AD14, AD15, AD16, AD17, AD18, AD19, AD20, AD21, AD22, AD23, AD24, AD25, AD26, AD27, AD28, AD29, AD30, AD31) of W90221F are corresponding with 32 bit address data multiplex lines of coding and decoding video circuit 2 to link to each other.The 27 bit address data multiplex lines (AD0, AD1, AD2, AD3, AD4, AD5, AD6, AD7, AD8, AD9, AD10, AD11, AD12, AD13, AD14, AD15, AD16, AD17, AD18, AD19, AD20, AD21, AD22, AD23, AD24, AD25, AD26) of W90221F are corresponding with the 27 digital video address date multiplexing lines of FLASH 8 to link to each other.The video control line of W90221F (CBE#3, CBE#2, CBE#1, CBE#0, PAR, FRAME#, TRDY#, IRDY#, STOP#, DEVSEL#, AD28, PERR#, SERR#, CLKU, RST, INTC, PCLK) is corresponding continuous with the control line of coding and decoding video circuit 2.The video data line of W90221F (Y0, Y1, Y2, Y3, Y4, Y5, Y6, Y7) is corresponding continuous with eight digital video data wires of coding and decoding video circuit 2.32 storage data wires (MD0, MD1, MD2, MD3, MD4, MD5, MD6, MD7, MD8, MD9, MD10, MD11, MD12, MD13, MD14, MD15, MD16, MD17, MD18, MD19, MD20, MD21, MD22, MD23, MD24, MD25, MD26, MD27, MD28, MD29, MD30, MD31) of W90221F link to each other with 32 position datawires of SDRAM memory 16 are corresponding.11 memory address lines (MA0, MA1, MA2, MA3, MA4, MA5, MA6, MA7, MA8, MA9, MA10) of W90221F are corresponding with 11 bit address lines of SDRAM memory 16 to link to each other.The storage control line of W90221F (MCS0#, DQM3, DQM2, DQM1, DQM0, MCKE, MWE#, MRAS#, MCAS#, MBA, MCLK) links to each other with the corresponding control line of SDRAM memory 16.The control line of W90221F (GFXCLK, DPCLK, GLBCS#, CPU RST, CBE#3, CBE#2, CBE#1, CBE#0) is corresponding continuous with the control line of system, control circuit 6.Eight Audio Data Lines (PD0, PD1, PD2, PD3, PD4, PD5, PD6, PD7) of W90221F are corresponding with eight Audio Data Lines of audio coding decoding circuit 5 to link to each other.The audio frequency control line of W90221F (INIT#, SLIN#, SLCT, PE, FAULT#, ATFD#, STB#, ACK#, BUSY) links to each other with the corresponding control line of audio coding decoding circuit 5.The multiplexing back data wire (SIN1, SOUT1) of W90221F links to each other with the corresponding interface of modulator-demodulator 7.The multiplexing back control line (DCD1#, RTS1#, DTR1#, DSR1#, CTS1#) of W90221F links to each other with the corresponding control interface of modulator-demodulator 7.
Fig. 4 is the schematic diagram of audio coding decoding circuit, the audio coding decoding circuit adopts the W9975CF chip, and its annexation is as follows: eight Audio Data Lines (PD0, PD1, PD2, PD3, PD4, PD5, PD6, PD7) of W9975CF are corresponding with eight Audio Data Lines of central processing unit 4 to link to each other.The audio frequency control line of W9975CF (INIT#, SLIN#, SLCT, PE, FAULT#, ATFD#, STB#, ACK#, BUSY) links to each other with the corresponding control line of central processing unit 4.The control signal of W9975CF (DR, FSYNC, SCLK, DX) links to each other with the corresponding control line of serial interface circuit TP3054 18.The Audio Data Line of TP305418 (TELIN, TELOUT) links to each other with the corresponding Audio Data Line of modulator-demodulator 7.
Fig. 5 is the schematic diagram of system, control circuit, system, control circuit adopts the ISP1032 chip, and its annexation is as follows: the control line of ISP1032 (GFXCLK, DPCLK, GLBCS#, CPU_RST, CBE#3, CBE#2, CBE#1, CBE#0) links to each other with the corresponding control line of central processing unit 4.The control line of ISP1032 (RST#, RI, LCS) links to each other with the corresponding control line of modulator-demodulator 7.Eight storage data wires (ROMD0, ROMD1, ROMD2, ROMD3, ROMD4, ROMD5, ROMD6, ROMD7) of ISP1032 link to each other with the data wire of FLASH 8 is corresponding.The control line of ISP1032 (RCS0#, RWE#, ROE#) links to each other with the corresponding control line of FLASH 8.The seven bit address lines of ISP1032 (ROMA20, ROMA21, ROMA22, ROMA23, ROMA3, ROMA4, ROMA5) link to each other with the appropriate address line of FLASH 8.The control line of ISP1032 (PRST#, K_ROW0, K_ROW1, K_ROW2, K_ROW3, K_COL0, K_COL1, K_COL2, K_COL3) links to each other with the corresponding control line of function selecting key groups 12.
The operation principle summary:
In the ISP1032 chip of control program writing system control circuit 6 of the present utility model.The utility model is connected with the common double voice frequency telephone by audio frequency input/output port 10, PSTN interface 11 is connected with PSTN with ordinary telephone line.Either party's dial-up the other side makes closing of the circuit, confirm that the other side also has a PSTN video telephone, the video call key of any side's selection function of both call sides selection key group 12, then system, control circuit 6 begins both sides' video call, and the transmission of image and sound and reception two-way simultaneous carry out.Process of transmitting: 1. imageing sensor 1 changes the light signal of gathering into the signal of telecommunication, is converted to the numeral letter through A/D
Number, with 16 yuv format input video codecs 2, output to through after the encoding process:
1. the LCD of local video telephone and drive circuit 3;
2. video output 9;
3. central processing unit 4.2. dual tone phone is imported audio codecs 5 to voice data through audio frequency input/output port 10.3. send into central processing unit 4 through the video and audio signal of coding, by system, control circuit 6
Control, carry out multiplexing process, make looking after the compression, voice data incoming modem 7,
Modulation is after PSTN interface 11 input PSTN.Receiving course: 1. the looking of the other side, voice data are by PSTN interface 11 incoming modems 7, after the demodulation
Send into central processing unit 4,, carry out demultiplexing and handle by the control of system, control circuit 6,
Video, audio signal are separated.2. the voice data input audio codec of separating 5, the process decoding processing is after audio frequency is defeated
Go into delivery outlet 10 and be input to dual tone phone.3. the video data input video codec of separating 2 outputs to through after the decoding processing:
1. LCD and drive circuit 3;
2. video output 9;
Through above several steps, video telephone is finished and is looked, the transmission of audio signal and reception.The external tv machine:
The user can be connected television set if needed with video output 9, the image of video telephone just is shown on the television set.
Claims (5)
1. video telephone, comprise imageing sensor, coding and decoding video circuit, central processing unit, audio coding decoding circuit, system, control circuit, modulator-demodulator, it is characterized in that: described central processing unit is connected with coding and decoding video circuit, audio coding decoding circuit, system, control circuit, FLASH, modulator-demodulator respectively; The coding and decoding video circuit is connected with imageing sensor, LCD and drive circuit, video output, FLASH; System, control circuit is connected with FLASH, modulator-demodulator, function selecting key groups; Modulator-demodulator is connected with audio coding decoding circuit, audio frequency input/output port, PSTN.
2. video telephone according to claim 1 is characterized in that: described coding and decoding video circuit adopts the W9961CF application-specific integrated circuit (ASIC), and video data bus links to each other with imageing sensor with the video control bus; W9961CF links to each other with memory by data/address bus, control bus, address bus; W9961CF links to each other with central processing unit by address date multiplexing line, control line, video data line; W9961CF links to each other with FLASH by the address date multiplexing line; W9961CF links to each other with LCD and drive circuit by video data line; W9961CF links to each other with video output by video data line VG.
3. video telephone according to claim 1 is characterized in that: described central processing unit adopts the W90221F application-specific integrated circuit (ASIC), and it links to each other with the coding and decoding video circuit by video address data multiplex line, video control line, video data line; W90221F address date multiplexing line links to each other with FLASH; W90221F storage data wire, address wire, control line link to each other with the SDRAM memory; The control line of W90221F links to each other with system, control circuit; W90221F Audio Data Line, control line link to each other with the audio coding decoding circuit; The multiplexing back of W90221F data wire, control line link to each other with modulator-demodulator.
4. video telephone according to claim 1 is characterized in that: described audio coding decoding circuit adopts W9975CF application-specific integrated circuit (ASIC) and TP3054 application-specific integrated circuit (ASIC), and W9975CF links to each other with central processing unit by Audio Data Line, control line; The W9975CF control signal links to each other with TP3054; The Audio Data Line of TP3054 links to each other with modulator-demodulator.
5. video telephone according to claim 1 is characterized in that: described system, control circuit adopts the ISP1032 application-specific integrated circuit (ASIC), and it links to each other with central processing unit by control line; The control line of ISP1032 links to each other with modulator-demodulator; The storage data wire of ISP1032, control line, address wire link to each other with FLASH; The control line of ISP1032 links to each other with the function selecting key groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01265774 CN2500054Y (en) | 2001-10-24 | 2001-10-24 | Visual telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01265774 CN2500054Y (en) | 2001-10-24 | 2001-10-24 | Visual telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2500054Y true CN2500054Y (en) | 2002-07-10 |
Family
ID=33672559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01265774 Expired - Fee Related CN2500054Y (en) | 2001-10-24 | 2001-10-24 | Visual telephone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2500054Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005025218A1 (en) * | 2003-09-06 | 2005-03-17 | Zte Corporation | A video phone terminal and realizing method |
| CN100362864C (en) * | 2005-07-13 | 2008-01-16 | 浙江大学 | Visual telephone system of network based on single-chip |
| CN100433753C (en) * | 2004-04-23 | 2008-11-12 | 王晖 | A videophone terminal |
| CN101924904A (en) * | 2010-08-20 | 2010-12-22 | 深圳中电数码显示有限公司 | 3D high-definition computer-television-telephone all-in-one machine |
| CN102098484A (en) * | 2011-02-25 | 2011-06-15 | 汉达尔通信技术(北京)有限公司 | Fixed-network videophone system |
| CN102118600A (en) * | 2011-03-01 | 2011-07-06 | 汉达尔通信技术(北京)有限公司 | Visual terminal based on fixed telephone network |
| CN101282464B (en) * | 2007-04-03 | 2012-12-19 | 联想(北京)有限公司 | Terminal and method for transferring video |
-
2001
- 2001-10-24 CN CN 01265774 patent/CN2500054Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005025218A1 (en) * | 2003-09-06 | 2005-03-17 | Zte Corporation | A video phone terminal and realizing method |
| CN100399821C (en) * | 2003-09-06 | 2008-07-02 | 中兴通讯股份有限公司 | Video phone terminal and its realizing method |
| CN100433753C (en) * | 2004-04-23 | 2008-11-12 | 王晖 | A videophone terminal |
| CN100362864C (en) * | 2005-07-13 | 2008-01-16 | 浙江大学 | Visual telephone system of network based on single-chip |
| CN101282464B (en) * | 2007-04-03 | 2012-12-19 | 联想(北京)有限公司 | Terminal and method for transferring video |
| CN101924904A (en) * | 2010-08-20 | 2010-12-22 | 深圳中电数码显示有限公司 | 3D high-definition computer-television-telephone all-in-one machine |
| CN102098484A (en) * | 2011-02-25 | 2011-06-15 | 汉达尔通信技术(北京)有限公司 | Fixed-network videophone system |
| CN102118600A (en) * | 2011-03-01 | 2011-07-06 | 汉达尔通信技术(北京)有限公司 | Visual terminal based on fixed telephone network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |