CN2237309Y - Multi-medium video-signal switching device - Google Patents
Multi-medium video-signal switching device Download PDFInfo
- Publication number
- CN2237309Y CN2237309Y CN 94246322 CN94246322U CN2237309Y CN 2237309 Y CN2237309 Y CN 2237309Y CN 94246322 CN94246322 CN 94246322 CN 94246322 U CN94246322 U CN 94246322U CN 2237309 Y CN2237309 Y CN 2237309Y
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- signal
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- microprocessor
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Abstract
The utility model relates to a multi-media video-signal switching device, which is used for receiving signals of video-signal equipment, such as televisions, etc. and converting the signals to signals capable of being displayed by computer displays. The utility model comprises an infrared remote controller and a video-signal switching box, wherein, the video-signal switching box comprises a microprocessor, an infrared receiver, a video signal processing circuit, a video-signal selection switch and a display; the microprocessor is used as the control center of the whole device, and is used for controlling the signals received by the infrared receiver and generating control signals to display the selected pictures by controlling the video-signal selection switch and the video signal processing circuit. The users can select required video-signal pictures just by a remote controller.
Description
The utility model relates to a kind of multimedia video letter conversion equipment, it is used to receive the vision signal of equipment such as television set, video tape recorder, be converted into the signal that computer monitor can show, so that the respective picture with television set, video tape recorder etc. under computer control shows on computer monitor screen;
The data in the memory can only be selected and use to existing traditional personal computer, reach the purpose of computing and memory by computer, the function of computer is very dull, the resolution of computer display screens has reached the requirement of general television image now, therefore can utilize the function key of computer keyboard, operation is connected with computer with selected other look the signal of letter equipment, believe the purpose of changing and reach multimedia video; But operational computations switch dish is a highly professional technology, many people can not operate without training, the people that can operate does not use a computer and also the data cleansing of having stored might be fallen, and cause heavy losses, even meeting operational computations machine, also must learn relevant every corresponding function of looking the function key of letter conversion by heart, could use handyly that this is the thing of a trouble really.
It is a kind of easy and simple to handle that the purpose of this utility model is to provide, believe conversion equipment without the multimedia video that specialized training can use, be to utilize a remote controller (remote controller of general television set also can be reequiped), as the media of looking letter conversion, all can appreciate or monitor that the difference that provides via computer looks the letter video whenever and wherever possible.And needn't worry the problem of losing of the computer data stored.
For achieving the above object, the utility model is taked following measure:
The utility model mainly is to adopt remote controller, particularly a kind of Infrared remote controller, utilization invites that the button of control device selects to be set looks letter picture (for example television image, video recording and playing machine picture, electronic game machine picture etc.), utilize the control centre of microprocessor as whole device, through video processing circuit, required signal processing of looking letter equipment is become the displayable signal of computer display.
The utility model is taked following circuit:
Multimedia video of the present utility model letter conversion equipment is with computer and look letter equipment and be connected, and it comprises that an infrared remote controller and looks the letter conversion box;
Wherein, look the letter conversion box comprise a microprocessor, an infrared receiver, one with look video processing circuit, that letter equipment is connected is connected with described computer look a letter selector switch and a display;
Microprocessor is the control centre of whole device, and it is used to control by infrared receiver and receives and through the signal of demodulation, to produce control signal, is used for the control of video signal processing circuit and looks the state of letter selector switch;
Infrared receiver is used to receive the infrared modulated signal that is sent by remote controller, after the demodulation, outputs to microprocessor, by the control signal of microprocessor generation.
Video processing circuit comprises mould/number (A/D) change-over circuit, digital multi-channel decoding circuit, D/A (D/A) change-over circuit and video signal preprocessor; It is that digital signal inputs to the digital multi-channel decoding circuit that analog to digital conversion circuit is used for the analog signal conversion from equipment such as television sets; Decipher through the digital multi-channel decoding circuit again; The D/A switch circuit is converted to video analog signal with vision signal, transporting to video signal preprocessor handles, the signal fundamental frequency is carried out frequency multiplication, the doubling frequency that is about to 15.7KHZ is the receptible frequency signal of monitor, and brightness and carrier chrominance signal handled, so that on computer screen, show;
Look the letter selector switch and be used to select computer or vision signal output, so that input computer display circuit.
The utlity model has following effect:
Utilize multimedia video letter conversion equipment of the present utility model, computer and television set etc. can be looked letter equipment and unite use, further bring into play the function of these equipment, because the utility model adopts Infrared remote controller operation, the control computer reaches and selects needed vision signal at any time flexibly to select the vision signal of each equipment such as television set, for viewing and admiring, the utility model is simple to operate, is convenient to grasp, and the problem of loss of data in the computer storage can not take place during operation.
It is as follows to feature description of the present utility model to reach embodiment in conjunction with the accompanying drawings:
Description of drawings:
Fig. 1,2: schematic block circuit diagram of the present utility model;
Fig. 3: the circuit diagram of microprocessor control section;
Fig. 4: mould/number conversion partial circuit figure;
Fig. 5: D/A switch partial circuit figure;
Fig. 6: video processing circuit figure;
Fig. 7: vision signal is selected and the display part circuit diagram;
Fig. 8: audio signal processing circuit figure.
Embodiment of the present utility model takes following circuit:
What as shown in Figures 1 and 2, multimedia video of the present utility model letter conversion equipment comprised that an infrared remote controller 1, a home computer (PC) 2 and be connected in computer and look letter equipment looks letter conversion box 3; Wherein look letter conversion box 3 by a microprocessor 31, an infrared receiver 32, a video processing circuit 33, one be used to the selector switch 34 selecting PC or look letter and a VGA display 35 etc. and partly be formed by connecting; The utility model also comprises an audio signal processing circuit.
Wherein, infrared receiver 32 is used to receive the infrared signal of being sent by infrared remote controller 1, transports to microprocessor 31 after demodulation; Microprocessor 31 is the control centre of whole system, and it receives the signal from infrared receiver 32, through system bus control of video signal processing circuit 33 and selector switch 34, to choose and to show needed picture;
Wherein, analog to digital conversion circuit 331 is used for the picture from television set 4 or other video equipment, analog signal conversion as video tape recorder 5, video disc 6, gamma camera 7, game machine 8 is a digital signal, digital decoder 332, after deciphering, produce video signal, clock-signal generator 337 is PLL parts, its incoming frequency is 13.5MHZ and 27MHZ for the 6.75MHZ output frequency, buffer 333 is a fifo circuit, so that scan line doubles (Double scan), to satisfy the display condition of monitor; Y, U, V digital signal that D/A (D/A) change-over circuit 334 receives from buffer 333, its output signal is: analog brightness and color difference signal: Y ,-(R-Y) ,-(B-Y); The chrominance signal transient state is improved the quality that circuit 335 is used to improve vision signal and is promoted clearness; Video signal preprocessor 336 is done the integrated treatment that signal shows, because this machine not only will show through video signal converted, more to make the screen display of computer, it receives the R.G.B from screen display 338, BLANK, and vision signal Y ,-(R-Y),-(B-Y), and output chrominance signal R.G.B.
As shown in Figure 2, also comprise audio signal processing circuit in the circuit of the present utility model, it comprises loud speaker 47 and earphone 46 that the stereo treatment circuit 42 that is connected with television set tuner 41, the audio signal that is connected with source of visual signals (VIDEO1, VIDEO2) select circuit 43, audio signal to adjust circuit 44, audio signal amplifier 45 and audio signal is converted to sound.
As shown in Figure 3, it is the circuit diagram of microprocessor control section, and it mainly comprises; Infrared receiver 32 and microprocessor 31, microprocessor 31 employing models are 8052 integrated circuit, this circuit is connected to circuit such as tuner 41, display, control switch.
As shown in Figure 4, it is the circuit diagram of analog-to-digital conversion part, it mainly comprises: analog to digital conversion circuit 331, digital decoder 332 and clock signal generator 337, analog to digital conversion circuit 331, digital decoder 332 and clock signal generator 337 in this part, it adopts model respectively is the integrated circuit of TDA8708, SAA9051, SAA9057.
As shown in Figure 5, it is the circuit diagram of digital-to-analogue conversion part, and it mainly comprises: buffer 333 and D/A (D/A) change-over circuit 334, they adopt model respectively is the integrated circuit of MU4708 and SAA9065.
As shown in Figure 6, it is the video signal preprocessor circuit diagram; It mainly comprises: the chrominance signal transient state is improved circuit 335, video signal preprocessor 336 and on-screen display circuit 338, and they adopt model respectively is the integrated circuit of TDA4566, TDA4680 and UPD6145.
As shown in Figure 7, it is vision signal selector switch and display part circuit diagram; It mainly comprises selector switch 34, and it adopts model is the signaling switch of the integrated circuit of 74LS157 as vertical scanning and horizontal sweep (VS, HS), and the relay of employing model MZ-5HS is made the switch of colourity signal data.
As shown in Figure 8, it is audio signal processing circuit figure.Audio signal processing circuit of the present utility model comprises stereo treatment circuit 42, audio signal selection circuit 43, audio signal adjustment circuit 44, audio signal amplifier 45, and they adopt model respectively is the integrated circuit of SBX1637, IC4052BP, TDA8425 and TDA2611A.
The utility model in use, when the operator stops computer operation, (want to monitor full factory work flow) when wanting the vision signal that provides by computer is provided, as long as can borrow its button to select the vision signal picture (for example vision signal picture of TV 4, video tape recorder 5, video disc 6, monitor 7 or electronic game machine 8) that has been set just pick up infrared remote controller 1 from computer monitor as the factory management personnel temporarily; Its process is as follows: when infrared ray remote controller 1 sends infrared signal, infrared receiver 32 is just with its reception, and convert the middle broken ends of fractured bone (Interrupt Pin) that digital signal (0 or 1) is delivered to microprocessor to, and stopping the demonstration of original picture on computer 2 screens, microprocessor is further deciphered the digital signal that receives simultaneously; If the operator by be Video1, when Video 2 or TV key, microprocessor will be exported a low level (Low) signal and give selector switch 34, therefore cut off the screen of the computer 2 that is showing at present just in picture displayed, and be converted to the vision signal of selected video equipment, and then be which kind of looks the letter signal by microprocessor judges, if from the signal of Video1 or TV, then microprocessor will send SEL[1: 0] be 00 signal, make video processing circuit 33 select to deliver to the screen of computer 2 from the picture of Video1; If press TV key, then SEL[1: 0] be 10, promptly select the screen of the signal of TV to computer 2; On the contrary, the operator wants to get back to computer 2 original pictures, and changeable is initial picture; This shows, utilize the utility model, as long as the operator uses a teleswitch, just may command selects needed picture to show on the screen of computer 2.
Claims (6)
1, a kind of multimedia video letter conversion equipment, it is with computer and look letter equipment and be connected, and it is characterized in that, and it comprises that an infrared remote controller, looks the letter conversion box;
Described look the letter conversion box comprise a microprocessor, an infrared receiver, one with look video processing circuit, a selector switch that is connected with described computer and the display that letter equipment is connected; Wherein
Microprocessor is the control centre of whole device, and it is used to control by infrared receiver and receives and through the signal of demodulation, to produce control signal, be used for control of video signal processing circuit and selector switch;
Infrared receiver is used to receive the infrared modulated signal that is sent by remote controller, after the demodulation, outputs to microprocessor, produces control signal by microprocessor;
Look the letter selector switch and be used to select Computer signal or vision signal.
2, multimedia video letter conversion equipment according to claim 1 is characterized in that,
Described video processing circuit comprises one mould/number conversion circuit, a digital multi-channel decoding circuit, a D/A switch circuit and a video signal preprocessor;
It is that digital signal is transported to the digital multi-channel decoding circuit that analog to digital conversion circuit is used for the analog signal conversion from equipment such as television sets; Produce digital video through the decoding of digital multi-channel decoding circuit again, the D/A switch circuit is converted to video analog signal with digital video, transporting to video signal preprocessor handles, video signal preprocessor carries out frequency multiplication with the signal fundamental frequency, produce the signal that monitor can receive, and brightness and carrier chrominance signal are handled.
3, multimedia video letter conversion equipment according to claim 1 is characterized in that,
Described microprocessor employing model is 8052 integrated circuit, and this circuit is connected to circuit such as tuner, display, control switch.
4, multimedia video letter conversion equipment according to claim 2 is characterized in that,
It is the integrated circuit of TDA8708, SAA9051 that analog-digital conversion circuit as described, digital multi-channel decoding circuit adopt model respectively.
5, multimedia video letter conversion equipment according to claim 2 is characterized in that,
Described D/A converting circuit comprises: buffer and D/A switch circuit
They adopt model respectively is the integrated circuit of MU4708 and SAA9065.
6, multimedia video letter conversion equipment according to claim 2 is characterized in that,
Describedly look the letter selector switch to adopt model be the signaling switch of the integrated circuit of 74LS157 as vertical scanning and horizontal sweep, the employing model is the switch that the relay of MZ-5HS is made the colourity signal data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246322 CN2237309Y (en) | 1994-11-25 | 1994-11-25 | Multi-medium video-signal switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246322 CN2237309Y (en) | 1994-11-25 | 1994-11-25 | Multi-medium video-signal switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2237309Y true CN2237309Y (en) | 1996-10-09 |
Family
ID=33851841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94246322 Expired - Fee Related CN2237309Y (en) | 1994-11-25 | 1994-11-25 | Multi-medium video-signal switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2237309Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454951C (en) * | 2002-12-13 | 2009-01-21 | 鸿富锦精密工业（深圳）有限公司 | Hand-held mobile unit display carrier expanding device and method |
| CN103197771A (en) * | 2013-04-07 | 2013-07-10 | 广州视睿电子科技有限公司 | Television and computer all-in-one machine for remotely controlling external computer and method for remotely controlling external computer |
-
1994
- 1994-11-25 CN CN 94246322 patent/CN2237309Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454951C (en) * | 2002-12-13 | 2009-01-21 | 鸿富锦精密工业（深圳）有限公司 | Hand-held mobile unit display carrier expanding device and method |
| CN103197771A (en) * | 2013-04-07 | 2013-07-10 | 广州视睿电子科技有限公司 | Television and computer all-in-one machine for remotely controlling external computer and method for remotely controlling external computer |
| WO2014166365A1 (en) * | 2013-04-07 | 2014-10-16 | 广州视睿电子科技有限公司 | Television-and-computer all-in-one machine, method, and computer storage medium for performing remote control on external computer |
| CN103197771B (en) * | 2013-04-07 | 2016-04-27 | 广州视睿电子科技有限公司 | External computer is carried out to television PC and the method for remote control |
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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 |