CN2845360Y - Video signal processor - Google Patents
Video signal processor Download PDFInfo
- Publication number
- CN2845360Y CN2845360Y CN 200520066325 CN200520066325U CN2845360Y CN 2845360 Y CN2845360 Y CN 2845360Y CN 200520066325 CN200520066325 CN 200520066325 CN 200520066325 U CN200520066325 U CN 200520066325U CN 2845360 Y CN2845360 Y CN 2845360Y
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- video signal
- signal
- port
- video
- processing
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Abstract
The utility model relates to a video signal processor which comprises an MCU, a video signal port, a video signal input circuit, a video signal output circuit and a select switch, wherein the select switch is connected with the video signal port for connecting the video signal port selectively to the video signal input circuit or the video signal output circuit. Adopting the structural mode and with the control and the switching of the input and output interfaces, the utility model has the advantages of port utilization rate enhancement, simple realization, no excess part addition and low cost.
Description
Technical field
The utility model relates to a kind of apparatus for processing of video signals, relates in particular to the input apparatus for processing of video signals shared with output.
Background technology
Existing radiovisor generally can provide the multi-channel A V port, and one the tunnel does output with video, other be used as video input, but in actual use, the occasion of input is far away more than the occasion of output, the utilance of port is not high like this, can not farthest satisfy user's demand.Along with the development of digital television techniques, increase digital output port if desired, for example DVI or HDMI interface, the cost of television set will increase, and the structure of complete machine also can be complicated.
Summary of the invention
The purpose of this utility model is to provide a kind of apparatus for processing of video signals, and this device can select video channel to be used for input or output by diverter switch, realizes the shared of input and output channel.
To achieve these goals, a kind of apparatus for processing of video signals provided by the utility model comprises: MCU, video signal port, video signal input circuit, video signal output circuit, and selector switch.Wherein, above-mentioned selector switch links to each other with video signal port, in order to video signal port optionally is connected to video signal input circuit or video signal output circuit.
The pairing video signal format of video signal port can be an analog format, as CVBS, and YC, YUV, VGA etc. can be number formats also, as DVI, HDMI etc.
In addition, the vision signal output for the ease of with different-format can be provided with encoder in above-mentioned video signal output circuit, to realize the code conversion between the different-format signal.
Adopt the utility model apparatus for processing of video signals, by to the control of input, output interface conversion, reach the purpose of the output of the picture signal that realizes the various video signal and picture format in conjunction with video signal format.
The utility model can be realized the television set input and output video signals under the control of a port, simple in structure, cost of manufacture is low, be convenient to use, the needs that producer makes had both been satisfied, the demand of present TV user can be satisfied again, and the development trend that digital interface in the future unifies whole multimedia equipment can be adapted to television video output.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment,
Fig. 2 is the concrete right structural representation of the utility model.
Embodiment
Shown in Figure 1, be the basic structural framing figure of the utility model, as can be seen from the figure, the utility model comprises input port and incoming line, video-out port and the outlet line of MCU, vision signal, and a diverter switch that is arranged between encoder and the decoder.Wherein, MCU controls above-mentioned diverter switch, and it connects input or outlet line by the judgement of input/output state is controlled, and allows port switch between input and output.When this port was imported as signal, this port was connected decoder, on incoming line is connected, input signal is delivered to decoder; When this port was exported as signal, this port was communicated with encoder, is connected with the outlet line of encoder, output signal is delivered to port use for external equipment.
The signal of this device generally includes CVBS, YC, YUV, RGB and data image signal.
For anolog TV signals, after integral high frequency head frequency-selecting and AV separation, obtain composite video signal CVBS.The CVBS signal has comprised synchronizing signal, luminance signal and color difference signal, and for the processing and the demonstration output of rear end, it also will pass through separated in synchronization, and light tone is separated, UV separates, YUV-〉the RGB conversion.Synchronizing signal is the key of handling in each step, and the signal after the separation comprises synchronizing signal.After CVBS signal process separated in synchronization and light tone are separated, obtain the YC signal, carrier chrominance signal obtains the UV component signal after separating through UV.Like this, through after the top separation, just obtained the YUV component signal.
For the used S-VIDEO signal in some place, this signal is the upgrading of CVBS signal, and it separates transmission with luminance signal and carrier chrominance signal, only need carry out the UV separation and just can obtain YUV signal.
For YUV signal, be again the upgrading of S-VIDEO signal, owing to Y, U, V separate, then directly obtain YUV signal.YUV signal comprises two kinds of YCbCr and YPbPr.
For rgb signal, be also referred to as the VGA signal, handle for unified, be translated into YUV earlier.
Above several picture signals, all belong to anolog TV signals, in order to carry out digitized processing, all to obtain digitized YUV signal through AD sampling, be sent to the rear end then and carry out image enhancement, frequency-conversion processing, output then, the final signal that shows all is RGB.
For the input of digital video signal (data image signal), mainly be meant the data that DVI and HDMI interface transmit.The data that DVI and HDMI interface transmit all transmit in digitally coded mode, and television set obtains the RGB digital signal through after decoding, and is same, handle for unified, and this signal is converted into digitized yuv data and directly delivers to image frequency-conversion processing unit.
After obtaining digitized yuv data, digital to television all will pass through image enhancement, and the rgb signal that frequency-conversion processing, or the processing of specific convergent-divergent, the data after will handling then are converted to simulation is sent to rear end demonstration output.
But for general video interface, as AV, YC, YUV, VGA, HDMI, DVI, they all can only can not doublely simultaneously do input and output as input or output interface.In order to reduce the port number of television set, reduce cost, can adopt special method to make these ports have input/output function concurrently.Fig. 2 has provided the input and output selection mode for the HDMI port.This device utilizes the switch of a MCU control, allows port switch between input and output.When the voltage of MCU control port when being high, this port is as input, and port is connected with the HDMI incoming line, and input signal is delivered to the HDMI decoder; Otherwise this port is as output, and port is connected with the outlet line of HDMI encoder, output signal is delivered to the HDMI port use for external equipment.
For AV, YC, YUV, VGA, HDMI, DVI, their port are physical ports, with it doesn't matter as input or the setting of output interface, therefore, top port can realize that by top method input and output can be provided with function.
Above described diverter switch be MCU control, the high-low level by the MCU output pin comes control switch.We also can realize above-mentioned functions by manual mode, realize the input and output selection by the control voltage of manual this switch of selection.
Claims (7)
1, a kind of apparatus for processing of video signals comprises:
MCU；
Video signal port;
Video signal input circuit;
Video signal output circuit;
It is characterized in that: this apparatus for processing of video signals also comprises the selector switch that links to each other with video signal port.
2, apparatus for processing of video signals as claimed in claim 1, it is characterized in that video signal port pairing be the analog video signal form, as CVBS, YC, YUV, VGA etc.
3, apparatus for processing of video signals as claimed in claim 1, it is characterized in that video signal port pairing be format digital video signal, as DVI, HDMI etc.
4,, it is characterized in that selector switch is manually control as claim 2 or 3 described apparatus for processing of video signals.
5,, it is characterized in that selector switch is MCU control as claim 2 or 3 described apparatus for processing of video signals.
6, apparatus for processing of video signals as claimed in claim 4 is characterized in that being provided with on the video signal output circuit encoder.
7, apparatus for processing of video signals as claimed in claim 5 is characterized in that being provided with on the video signal output circuit encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520066325 CN2845360Y (en) | 2005-10-21 | 2005-10-21 | Video signal processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520066325 CN2845360Y (en) | 2005-10-21 | 2005-10-21 | Video signal processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2845360Y true CN2845360Y (en) | 2006-12-06 |
Family
ID=37487302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520066325 Expired - Fee Related CN2845360Y (en) | 2005-10-21 | 2005-10-21 | Video signal processor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2845360Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448161A (en) * | 2015-12-25 | 2016-03-30 | 天津震东润科智能科技股份有限公司 | Monitoring equipment display teaching system |
-
2005
- 2005-10-21 CN CN 200520066325 patent/CN2845360Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448161A (en) * | 2015-12-25 | 2016-03-30 | 天津震东润科智能科技股份有限公司 | Monitoring equipment display teaching system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061206 Termination date: 20141021 |
|
| EXPY | Termination of patent right or utility model |