CN201562438U - LED display device and circuit thereof - Google Patents
LED display device and circuit thereof Download PDFInfo
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- CN201562438U CN201562438U CN2009202609930U CN200920260993U CN201562438U CN 201562438 U CN201562438 U CN 201562438U CN 2009202609930 U CN2009202609930 U CN 2009202609930U CN 200920260993 U CN200920260993 U CN 200920260993U CN 201562438 U CN201562438 U CN 201562438U
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Abstract
The utility model discloses an LED display device and a circuit thereof. The circuit comprises at least two video signal processing circuits, a signal switching circuit and a detection control circuit, wherein each video signal processing circuit comprises a signal input end used for inputting display signals, a signal output end used for outputting processed signals, and a detection output end; the signal switching circuit is used for selecting and outputting a way of signals from the processed signals of each video signal processing circuit according to control signals and comprises an output end used for outputting the selected signals, a control end used for receiving the control signals, and a switch input end which is respectively connected with the signal output end of each video signal processing circuit; and the detection control circuit is used for detecting each video signal processing circuit and sending control signals to the signal switching circuit when a fault occurs to a video signal processing circuit corresponding to the selected signals. The utility model can switch the video signal processing circuits and enhance the supportability without needing to instantly maintain in the field.
Description
Technical field
The utility model relates to electronic applications, particularly relates to LED display device and circuit thereof.
Background technology
LED is the less semiconductor devices of a kind of profile, when electric current can emit beam during by it.Glow color depends primarily on the chemical composition of the luminous composition of led chip, can be deployed into as required that white light or other are various coloured light.Recently, use led light source as show, decorate, beautify, brightening and lighting source begun to popularize.
Wherein, aspect LED display, many in recent years LED giant-screen jumbotrons constantly occur, and particularly LED display is in the application of some important departments, as important events such as department of government bodies, on-the-spot broadcasting, large-scale performances.People are more and more higher to the performance requirement of LED display,, immediately on-site maintenance few as failure rate.
On July 9th, 2008, disclosed Chinese utility model patent disclosed a kind of signal receiver of the LED of being used for shows signal transmission for No. 200720122335.6, and this transmitting device comprises a plurality of led modules that are used for showing respectively a picture element signal; Be used for laser signal transmitter by the laser signal emission LED shows signal of specific wavelength; Couple with described laser signal transmitter, be used for receiving respectively a plurality of laser signal receivers of the LED shows signal that described laser signal transmitter launched; Be used to receive the output signal of described laser signal receiver and drive a plurality of LED driver modules of described led module, wherein each LED driver module is connected with a described led module with the output terminal of a described laser signal receiver respectively.By signal receiving module and the driver module that each LED display pixel independently is set, avoid because fault causes large tracts of land to damage the problem of led module.
But, even concerning the scheme of the corresponding signal receiver of each LED driver module, for a LED driver module, remain mono signal source and the mono signal treatment circuit pattern of adopting, in case the received signal treatment circuit of this LED driver module produces fault, light flower screen then is heavy then can't display image, and on-site maintenance also will be taken the regular hour, and this causes significant impact in the activity of important events for the performance and the people of LED display.
The utility model content
The technical matters that the utility model mainly solves provides a kind of LED display device and circuit thereof, repairs automatically in the time of can breaking down at the video processing circuit of work at present, improves protection, does not need immediately to go on-site maintenance.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of LED display circuit is provided, comprise: at least two video processing circuits, each described video processing circuit comprise the signal input part that is used to import shows signal, the signal output part and the detection output terminal of output processed signal; Be used for selecting one tunnel signal switching circuit of exporting according to control signal from the processed signal of each described video processing circuit, described signal switching circuit comprises the output terminal of exporting selected signal, the control end that receives described control signal and the switching input end that connects each described video processing circuit signal output part respectively; Be used to the detection control circuit that detects each described video processing circuit, when the video processing circuit of described selected signal correspondence breaks down, transmit control signal to described signal switching circuit, described control signal is a signal of selecting another one video processing circuit processed signal to export, and described detection control circuit comprises detection input end and the control signal output ends that connects each described video processing circuit detection output terminal.
For solving the problems of the technologies described above, another technical scheme that the utility model adopts is: a kind of LED display device is provided, comprise LED display and display screen circuit, described display screen circuit comprises: at least two video processing circuits, each described video processing circuit comprise the signal input part that is used to import shows signal, the signal output part and the detection output terminal of output processed signal; Be used for selecting one tunnel signal switching circuit of exporting according to control signal from the processed signal of each described video processing circuit, described signal switching circuit comprises that the selected signal of output is to the output terminal of described LED display, the control end that receives described control signal and the switching input end that connects each described video processing circuit signal output part respectively; Be used to the detection control circuit that detects each described video processing circuit, when the video processing circuit of described selected signal correspondence breaks down, transmit control signal to described signal switching circuit, described control signal is a signal of selecting another one video processing circuit processed signal to export, and described detection control circuit comprises detection input end and the control signal output ends that connects each described video processing circuit detection output terminal.
The beneficial effects of the utility model are: in case be different from that the received signal treatment circuit of prior art LED driver module produces fault then carry out on-site maintenance cause flower the reasonable time, give the performance of LED display and people cause significant impact in the activity of important events situation, the utility model adopts the comprehensive technological scheme of alternate video signal processing circuit and signal switching circuit and detection control circuit, in the time of can breaking down at the video processing circuit of work at present signal link is switched on other normal video processing circuits, improve protection, do not need immediately to go on-site maintenance.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model LED display circuit embodiments one;
Fig. 2 is the synoptic diagram of the utility model LED display circuit embodiments two.
Embodiment
Consult Fig. 1, the utility model LED display circuit embodiments comprises:
At least two video processing circuits, each described video processing circuit comprise the signal input part that is used to import shows signal, the signal output part and the detection output terminal of output processed signal;
Be used for selecting one tunnel signal switching circuit of exporting according to control signal from the processed signal of each described video processing circuit, described signal switching circuit comprises the output terminal of exporting selected signal, the control end that receives described control signal and the switching input end that connects each described video processing circuit signal output part respectively;
Be used to the detection control circuit that detects each described video processing circuit, when the video processing circuit of described selected signal correspondence breaks down, transmit control signal to described signal switching circuit, described control signal is a signal of selecting another one video processing circuit processed signal to export, and described detection control circuit comprises detection input end and the control signal output ends that connects each described video processing circuit detection output terminal.
In case be different from that the received signal treatment circuit of prior art LED driver module produces fault then carry out on-site maintenance, the performance of giving LED display and people cause significant impact in the activity of important events situation cause flower the reasonable time, the utility model adopts the comprehensive technological scheme of alternate video signal processing circuit and signal switching circuit and detection control circuit, in the time of can breaking down at the video processing circuit of work at present signal link is switched on other normal video processing circuits, improve protection, do not need immediately to go on-site maintenance.
In addition, the time that the utility model carries out the signal switching may diminish to Millisecond, even still less, when carrying out blocked operation, do not influence the demonstration of LED display substantially, make spectators' fundamental sensation less than having carried out the signal switching, do not influence the display effect of LED display when guaranteeing to repair fault automatically substantially.
In one embodiment, except providing power supply, the video processing circuit for work at present makes its operate as normal, can also for providing power supply, other standby video processing circuits make its operate as normal, processing signals always, but after the signal of these video processing circuits exports signal switching circuit to, can be by the signal of signal switching circuit as output; In another embodiment, can when current video signal processing circuit operate as normal, allow these standby video processing circuits not work to save energy consumption, that is: each described video processing circuit comprises the circuit start end, and described detection control circuit is included in described control signal output ends output control signal sends the start-up circuit working signal before to the circuit start end of described selected video processing circuit start-up control end.
In one embodiment, described detection control circuit is the special chip with three step responses, and the three-state of described special chip allows end (OE end) be described control signal output ends.Control its ternary end (OE end) that allows, just can the control signal commutation circuit in each road signal break-make and switch.
Consult Fig. 2, in one embodiment, described video processing circuit is a signal receiving processor, and quantity is two.Described signal receiving processor comprises the cascade end that is connected to subordinate's receiving processor.
Also consult Fig. 1 and Fig. 2, the utility model also provides a kind of LED display device, comprises LED display and display screen circuit, and described display screen circuit comprises:
At least two video processing circuits, each described video processing circuit comprise the signal input part that is used to import shows signal, the signal output part and the detection output terminal of output processed signal;
Be used for selecting one tunnel signal switching circuit of exporting according to control signal from the processed signal of each described video processing circuit, described signal switching circuit comprises that the selected signal of output is to the output terminal of described LED display, the control end that receives described control signal and the switching input end that connects each described video processing circuit signal output part respectively;
Be used to the detection control circuit that detects each described video processing circuit, when the video processing circuit of described selected signal correspondence breaks down, transmit control signal to described signal switching circuit, described control signal is a signal of selecting another one video processing circuit processed signal to export, and described detection control circuit comprises detection input end and the control signal output ends that connects each described video processing circuit detection output terminal.
Above-mentioned LED display device can be carried out the display screen circuit that signal switches because possess, therefore in the time of can breaking down at the video processing circuit of work at present signal link is switched on other normal video processing circuits, improve protection, do not need immediately to go on-site maintenance.The particularly application in the activity of some important events can guarantee to show normally when accident occurring, avoids causing significant impact.
Therein among embodiment, each described video processing circuit comprises the circuit start end, and described detection control circuit is included in described control signal output ends output control signal sends the start-up circuit working signal before to the circuit start end of described selected video processing circuit start-up control end.
Among embodiment, described detection control circuit is the special chip with three step responses therein, and the three-state of described special chip allows end to be described control signal output ends.
Among embodiment, described video processing circuit is a signal receiving processor therein, and quantity is two.
Among embodiment, described signal receiving processor comprises the cascade end that is connected to subordinate's receiving processor therein.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (10)
1. a LED display circuit is characterized in that, comprising:
At least two video processing circuits, each described video processing circuit comprise the signal input part that is used to import shows signal, the signal output part and the detection output terminal of output processed signal;
Be used for selecting one tunnel signal switching circuit of exporting according to control signal from the processed signal of each described video processing circuit, described signal switching circuit comprises the output terminal of exporting selected signal, the control end that receives described control signal and the switching input end that connects each described video processing circuit signal output part respectively;
Be used to the detection control circuit that detects each described video processing circuit, when the video processing circuit of described selected signal correspondence breaks down, transmit control signal to described signal switching circuit, described control signal is a signal of selecting another one video processing circuit processed signal to export, and described detection control circuit comprises detection input end and the control signal output ends that connects each described video processing circuit detection output terminal.
2. LED display circuit according to claim 1 is characterized in that:
Each described video processing circuit comprises the circuit start end, and described detection control circuit is included in described control signal output ends output control signal sends the start-up circuit working signal before to the circuit start end of described selected video processing circuit start-up control end.
3. LED display circuit according to claim 2 is characterized in that:
Described detection control circuit is the special chip with three step responses, and the three-state of described special chip allows end to be described control signal output ends.
4. LED display circuit according to claim 3 is characterized in that:
Described video processing circuit is a signal receiving processor, and quantity is two.
5. LED display circuit according to claim 4 is characterized in that:
Described signal receiving processor comprises the cascade end that is connected to subordinate's receiving processor.
6. a LED display device comprises LED display and display screen circuit, it is characterized in that, described display screen circuit comprises:
At least two video processing circuits, each described video processing circuit comprise the signal input part that is used to import shows signal, the signal output part and the detection output terminal of output processed signal;
Be used for selecting one tunnel signal switching circuit of exporting according to control signal from the processed signal of each described video processing circuit, described signal switching circuit comprises that the selected signal of output is to the output terminal of described LED display, the control end that receives described control signal and the switching input end that connects each described video processing circuit signal output part respectively;
Be used to the detection control circuit that detects each described video processing circuit, when the video processing circuit of described selected signal correspondence breaks down, transmit control signal to described signal switching circuit, described control signal is a signal of selecting another one video processing circuit processed signal to export, and described detection control circuit comprises detection input end and the control signal output ends that connects each described video processing circuit detection output terminal.
7. LED display device according to claim 6 is characterized in that:
Each described video processing circuit comprises the circuit start end, and described detection control circuit is included in described control signal output ends output control signal sends the start-up circuit working signal before to the circuit start end of described selected video processing circuit start-up control end.
8. LED display device according to claim 7 is characterized in that:
Described detection control circuit is the special chip with three step responses, and the three-state of described special chip allows end to be described control signal output ends.
9. LED display device according to claim 8 is characterized in that:
Described video processing circuit is a signal receiving processor, and quantity is two.
10. LED display device according to claim 9 is characterized in that:
Described signal receiving processor comprises the cascade end that is connected to subordinate's receiving processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202609930U CN201562438U (en) | 2009-11-27 | 2009-11-27 | LED display device and circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202609930U CN201562438U (en) | 2009-11-27 | 2009-11-27 | LED display device and circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562438U true CN201562438U (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202609930U Expired - Fee Related CN201562438U (en) | 2009-11-27 | 2009-11-27 | LED display device and circuit thereof |
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| CN (1) | CN201562438U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103310725A (en) * | 2012-03-09 | 2013-09-18 | 深圳市创显光电有限公司 | LED signal free conversion device, conversion method and display screen |
| CN108414918A (en) * | 2018-02-26 | 2018-08-17 | 深圳市华星光电技术有限公司 | Device for testing compatibility and method |
| CN110085163A (en) * | 2019-04-25 | 2019-08-02 | 深圳市洲明科技股份有限公司 | LED shows cascade Mach-Zehnder interferometer circuit and LED display |
-
2009
- 2009-11-27 CN CN2009202609930U patent/CN201562438U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103310725A (en) * | 2012-03-09 | 2013-09-18 | 深圳市创显光电有限公司 | LED signal free conversion device, conversion method and display screen |
| CN108414918A (en) * | 2018-02-26 | 2018-08-17 | 深圳市华星光电技术有限公司 | Device for testing compatibility and method |
| CN110085163A (en) * | 2019-04-25 | 2019-08-02 | 深圳市洲明科技股份有限公司 | LED shows cascade Mach-Zehnder interferometer circuit and LED display |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20171127 |