CN201035944Y - Interface circuit compatible with multi-format display screen - Google Patents
Interface circuit compatible with multi-format display screen Download PDFInfo
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- CN201035944Y CN201035944Y CNU2007200204061U CN200720020406U CN201035944Y CN 201035944 Y CN201035944 Y CN 201035944Y CN U2007200204061 U CNU2007200204061 U CN U2007200204061U CN 200720020406 U CN200720020406 U CN 200720020406U CN 201035944 Y CN201035944 Y CN 201035944Y
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Abstract
The utility model discloses an interface circuit which can be compatible with display screens of various specifications. The interface circuit is arranged on a video signal processing board, which comprises a multi-pin interface connected with the display screen; the multi-pin of the interface comprises a power supply pin, a control signal transmitting pin, a video signal transmitting pin and an I2 C bus wire signal transmitting pin, wherein, the power supply pin is connected with an electric power supply for providing the operating voltage for a display screen control board; the control signal transmitting pin is connected with the display screen control signal output terminal of the video signal processing circuit on the signal processing board; the control signal transmitting pin comprises a plurality of channels, and different control signals required by the display screens of different specifications perform transmission through different control signal transmitting pins; the video signal transmitting pin is connected with the LVDS signal output terminal of the video signal processing circuit on the signal processing board; an I <2> C bus wire signal transmitting pin is respectively connected with the I <2> C bus wire terminal of the video signal processing circuit on the signal processing board correspondingly. Be adopting the interface circuit, the compatibility and the adaptability of the signal processing board are greatly improved.
Description
Technical field
The utility model belongs to the interface circuit technical field, specifically, relates to a kind of interface circuit that can compatible plurality of specifications display screen connection request.
Background technology
The liquid crystal display that present liquid crystal TV set is adopted exists the WXGA screen of common single channel LVDS interface, the FULL HD screen of dual-channel LVDS, the top grade screen of 10BIT and the plurality of specifications such as common screen of 8BIT.The tradition liquid crystal TV set need be according to the different interface circuit of specification different designs that will dispose liquid crystal display, to satisfy the connection request between television signal plate and the liquid crystal display in the design process of its signal plate.Adopt this design to cause a kind of liquid crystal display of specification to need the independent signal plate of a corresponding cover, not only increased technician's workload, prolonged the construction cycle, and miscellaneous signal-processing board also can produce bigger trouble in the stock control process.
Based on this, can on the television signal disposable plates, design a kind of general interface circuit, make that same block signal disposable plates can compatible various dissimilar liquid crystal displays, be that present televisor is made one of subject matter that industry needs to be resolved hurrily.
The utility model content
The utility model is for the problem of the interface circuit versatility difference that solves the signal-processing board that is connected with display screen in the prior art, a kind of novel interface circuit is provided, can be implemented in and adopt an interface just can connect the display screen of various different sizes on the signal-processing board, thereby improved the compatibility and the adaptability of signal-processing board greatly.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of interface circuit of compatible plurality of specifications display screen, described interface circuit is arranged on the video signal processing board, comprises a multitube pin interface that is connected with display screen; Wherein, comprise in a plurality of pins of described interface: power pin is connected to the power supply that the display screen control panel provides operating voltage; Control signal transmission pin, the display screen control signal output ends of video processing circuit on the connection signal-processing board; Described control signal transmission pin includes multichannel, and the required different control signals of different size display screen are transmitted by different control signal transmission pins; The video signal transmission pin connects the LVDS signal output part of video processing circuit on the described signal-processing board; I
2C bus signal transmission pin includes two-way, respectively with described signal-processing board on the I of video processing circuit
2The C bus end is corresponding to be connected.
Described different size display screen can comprise: have the WXGA screen of single channel LVDS interface, the FULL HD screen with dual-channel LVDS interface, the top grade screen of 10BIT and the common screen of 8BIT etc.
In order to adapt to the different connection requests of high-grade screen of 10BIT and the common screen of 8BIT, in described interface, also include 8BIT or 10BIT display screen base pin selection, described base pin selection is by a gating switch ground connection.When needs connect the common screen of 8BIT, connect described gating switch, make described base pin selection ground connection, electric position is low; When needs connect the high-grade screen of 10BIT, cut off described gating switch, make described base pin selection unsettled, the electric position height.
Certainly, described base pin selection also can adopt the selection of another connected mode realization to 8BIT or 10BIT display screen, and promptly described base pin selection connects direct supply on the one hand, on the other hand by a gating switch ground connection.When needs connect the common screen of 8BIT, connect described gating switch, make described base pin selection ground connection, electric position is low; When needs connect the high-grade screen of 10BIT, cut off described gating switch, direct supply is drawn high described base pin selection current potential.
Wherein, described gating switch can be selected any one realization in jumper wire device, hand switch, relay or the transistor for use.
Further, in described control signal transmission pin, include dynamic contrast control pin, show the contrast adjustment signal output part with the screen of described video processing circuit and be connected.
Again further, in described video signal transmission pin, include two groups, 24 LVDS signal transmission pins; In described control signal transmission pin, also include LVDS mode of operation base pin selection, select signal output part to be connected with the LVDS mode of operation of described video processing circuit.
Again further, include the transmission pin of two-way transmission backlight illumination conditioning signal in described control signal transmission pin, the one tunnel receives the backlight illumination feedback signal from LCDs; Another road connects the backlight illumination conditioning signal output terminal of described video processing circuit.
In the utility model, described interface adopts the double socket of one 44 pins to realize.
In addition, on described signal-processing board, also be provided with the coding module that RGB changes the LVDS form, 8BIT or the single primary colour signal of 10BIT are encoded into output to after the vision signal of LVDS form in the described interface on the LVDS signal transmission pin.
Compared with prior art, advantage of the present utility model and good effect are: the utility model is by being provided with described common interface circuit on video signal processing board, only need to change connecting line, do not need backplate circuit is changed, the liquid crystal display that can connect all size has improved the compatibility and the adaptability of signal-processing board greatly, has shortened the construction cycle, save cost of development, reduced the trouble of stock control.
Description of drawings
Fig. 1 is the schematic diagram of the interface circuit of the compatible plurality of specifications display screen that proposes of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
As shown in Figure 1, interface of the present utility model adopts the socket XP12 of double 44 pins (22*2) to realize, is arranged on the video signal processing board of televisor.In order to realize that video signal processing board is connected communication with the display screen of plurality of specifications, includes at least in a plurality of pins of described socket XP12: power pin, control signal transmission pin, video signal transmission pin and I
2C bus signal transmission pin.
Specific to Fig. 1,1,2,3,4 pins of socket XP12 are connected to the power supply Panel_Power that the display screen control panel provides operating voltage.5,10,11,12 of socket XP12 is control signal transmission pin, connects the display screen control signal transmit port of video processing circuit on the signal-processing board.Wherein, the 5th pin is the LVDS mode of operation base pin selection of display screen, select signal output part to be connected with the LVDS mode of operation of described video processing circuit, by selecting connection+3.3V direct supply IO_V33 or ground connection, come this pin is put height or dragged down, and then realize effective switching the display screen mode of operation; The 10th pin is the dynamic contrast control pin of display screen, shows the contrast adjustment signal output part with screen and is connected.11,12 pins of socket XP12 are the transmission pin of two-way transmission backlight illumination conditioning signal, and 12 pin receive the backlight illumination feedback signal from LCDs; 11 pin connect the backlight illumination conditioning signal output terminal of described video processing circuit, by the voltage signal to LCDs output different potentials, realize effective adjusting of brightness of backlight.
The 13rd pin of socket XP12 is the base pin selection of the high-grade screen of the common screen of 8bit and 10bit, realizes selection to two kinds of screens by this pin is unsettled or ground connection.In the utility model, can on this pin, connect a gating switch, the other end ground connection of described gating switch.When needs connect the common screen of 8bit, connect described gating switch, make 13 pin ground connection, electric position is low; When needs connect the high-grade screen of 10bit, cut off described gating switch, make 13 pins unsettled.
Certainly, also can adopt the mode that described 13 pins is raised to noble potential or is pulled low to electronegative potential to realize selection to 8bit or 10bit display screen promptly on the basis of said structure, on described 13 pins, connecting a direct current power supply again.When needs connect the common screen of 8bit, connect described gating switch, make 13 pin ground connection, electric position is low; When needs connect the high-grade screen of 10bit, cut off described gating switch, direct supply is drawn high the current potential of 13 pins, uses with this selection that realizes two kinds of display screens.
In the utility model, the electron device that described gating switch can adopt jumper wire device, hand switch, relay or transistor etc. to have on-off action is realized.
15～26 pins of socket XP12 are the data line and the clock line of first via LVDS format video signal; 29,30 pins are I
2C bus communication pin, respectively with described signal-processing board on the I of video processing circuit
2The C bus end is corresponding to be connected; 31～42 pins are the data line and the clock line of the second road LVDS format video signal.When connecting the use of single channel LVDS screen, only use 1～26 pin of socket XP12 to get final product, the socket that one 26 pin (13 * 2) promptly is installed gets final product.When connecting the use of dual-channel LVDS screen, then need to install the socket of one 44 pin (22 * 2), realize the real-time Transmission of dual-channel LVDS vision signal between signal plate and display screen by 15～42 pins of socket XP12.
In addition, on described signal-processing board, also be provided with the coding module that RGB changes the LVDS form, output on the LVDS signal transmission pin of socket XP12 after 8bit or the single primary colour signal of 10bit are encoded into LVDS signal flow formatted data.When selecting the common screen of connection 8bit to use, with the 13rd pin ground connection of socket XP12, the LVDS data stream that the coding back forms transfers to display screen by 15～24 pins of socket XP12; When select connecting the high-grade screen of 10bbit and use, the 13rd pin of socket XP12 is unsettled or be raised to noble potential, and the LVDS data stream that the coding back forms transfers to display screen by 15～26 pins of socket XP12.Being provided with a LVDS in the control panel of described display screen changes the decoder module of rgb format, the LVDS signal flow formatted data decoding that receives is reduced into original 8bit or 10bit rgb signal after, output image.
The utility model is by the above-mentioned common interface circuit of design on the television signal disposable plates, not only can connect common liquid crystals screen (single channel LVDS) and FULL HD liquid crystal display (dual-channel LVDS), but also the common screen of top grade that can compatible 10bit screen and 8bit, and can partly realize I with the liquid crystal display control panel
2The C bus communication has improved the adaptability of signal-processing board greatly.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection domain of the present utility model.
Claims (10)
1. the interface circuit of a compatible plurality of specifications display screen, described interface circuit is arranged on the video signal processing board, comprises a multitube pin interface that is connected with display screen; It is characterized in that: in a plurality of pins of described interface, comprising:
Power pin is connected to the power supply that the display screen control panel provides operating voltage;
Control signal transmission pin, the display screen control signal output ends of video processing circuit on the connection signal-processing board; Described control signal transmission pin includes multichannel, and the required different control signals of different size display screen are transmitted by different control signal transmission pins;
The video signal transmission pin connects the LVDS signal output part of video processing circuit on the described signal-processing board;
I
2C bus signal transmission pin includes two-way, respectively with described signal-processing board on the I of video processing circuit
2The C bus end is corresponding to be connected.
2. interface circuit according to claim 1 is characterized in that: include 8BIT or 10BIT display screen base pin selection in described interface, described base pin selection is by a gating switch ground connection.
3. interface circuit according to claim 1 is characterized in that: include 8BIT or 10BIT display screen base pin selection in described interface, described base pin selection connects direct supply on the one hand, on the other hand by a gating switch ground connection.
4. according to claim 2 or 3 described interface circuits, it is characterized in that: described gating switch is selected wherein a kind of in jumper wire device, hand switch, relay or the transistor for use.
5. according to each described interface circuit in the claim 1 to 3, it is characterized in that: in described control signal transmission pin, include dynamic contrast control pin, show the contrast adjustment signal output part with the screen of described video processing circuit and be connected.
6. according to each described interface circuit in the claim 1 to 3, it is characterized in that: in described control signal transmission pin, include LVDS mode of operation base pin selection, select signal output part to be connected with the LVDS mode of operation of described video processing circuit; In described video signal transmission pin, include two groups, 24 LVDS signal transmission pins.
7. according to each described interface circuit in the claim 1 to 3, it is characterized in that: include the transmission pin of two-way transmission backlight illumination conditioning signal in described control signal transmission pin, the one tunnel receives the backlight illumination feedback signal from LCDs; Another road connects the backlight illumination conditioning signal output terminal of described video processing circuit.
8. according to each described interface circuit in the claim 1 to 3, it is characterized in that: described different size display screen comprises: have the WXGA screen of single channel LVDS interface, the FULL HD screen with dual-channel LVDS interface, the top grade screen of 10BIT and the common screen of 8BIT.
9. interface circuit according to claim 8 is characterized in that: described interface is the double sockets of 44 pins.
10. interface circuit according to claim 8, it is characterized in that: described signal-processing board is provided with the coding module that RGB changes the LVDS form, 8BIT or the single primary colour signal of 10BIT is encoded into output to after the vision signal of LVDS form in the described interface on the LVDS signal transmission pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200204061U CN201035944Y (en) | 2007-04-03 | 2007-04-03 | Interface circuit compatible with multi-format display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200204061U CN201035944Y (en) | 2007-04-03 | 2007-04-03 | Interface circuit compatible with multi-format display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201035944Y true CN201035944Y (en) | 2008-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200204061U Expired - Fee Related CN201035944Y (en) | 2007-04-03 | 2007-04-03 | Interface circuit compatible with multi-format display screen |
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|---|---|
| CN (1) | CN201035944Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710990A (en) * | 2012-05-02 | 2012-10-03 | 熊猫电子集团有限公司 | Implementation method for intelligent television terminal based on multi-specification screen support |
| CN103376831A (en) * | 2012-04-27 | 2013-10-30 | 国基电子（上海）有限公司 | Electronic device with display panel |
| CN105590590A (en) * | 2016-03-09 | 2016-05-18 | 深圳市华星光电技术有限公司 | Backlight brightness automatic adjusting system suitable for different liquid crystal panels and liquid crystal display with backlight brightness automatic adjusting system |
| CN108228129A (en) * | 2018-01-31 | 2018-06-29 | 小派科技（上海）有限责任公司 | Interface data processing method and device |
| CN111104354A (en) * | 2019-12-20 | 2020-05-05 | 威创集团股份有限公司 | Digital audio-video connector and interface thereof |
| CN112133259A (en) * | 2020-10-09 | 2020-12-25 | 上海中航光电子有限公司 | Display module, matching method of display module and main control chip signal format and display device |
| CN112562608A (en) * | 2020-12-25 | 2021-03-26 | 海宁奕斯伟集成电路设计有限公司 | Driving circuit and driving method thereof, display module and display device |
| CN113781944A (en) * | 2021-08-19 | 2021-12-10 | 瑞芯微电子股份有限公司 | Method and device for supporting different display screens by same hardware display interface |
-
2007
- 2007-04-03 CN CNU2007200204061U patent/CN201035944Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376831A (en) * | 2012-04-27 | 2013-10-30 | 国基电子（上海）有限公司 | Electronic device with display panel |
| CN103376831B (en) * | 2012-04-27 | 2016-09-07 | 国基电子（上海）有限公司 | There is the electronic installation of display floater |
| CN102710990A (en) * | 2012-05-02 | 2012-10-03 | 熊猫电子集团有限公司 | Implementation method for intelligent television terminal based on multi-specification screen support |
| CN102710990B (en) * | 2012-05-02 | 2014-09-17 | 熊猫电子集团有限公司 | Implementation method for intelligent television terminal based on multi-specification screen support |
| CN105590590A (en) * | 2016-03-09 | 2016-05-18 | 深圳市华星光电技术有限公司 | Backlight brightness automatic adjusting system suitable for different liquid crystal panels and liquid crystal display with backlight brightness automatic adjusting system |
| CN108228129A (en) * | 2018-01-31 | 2018-06-29 | 小派科技（上海）有限责任公司 | Interface data processing method and device |
| CN111104354A (en) * | 2019-12-20 | 2020-05-05 | 威创集团股份有限公司 | Digital audio-video connector and interface thereof |
| CN112133259A (en) * | 2020-10-09 | 2020-12-25 | 上海中航光电子有限公司 | Display module, matching method of display module and main control chip signal format and display device |
| CN112562608A (en) * | 2020-12-25 | 2021-03-26 | 海宁奕斯伟集成电路设计有限公司 | Driving circuit and driving method thereof, display module and display device |
| CN113781944A (en) * | 2021-08-19 | 2021-12-10 | 瑞芯微电子股份有限公司 | Method and device for supporting different display screens by same hardware display interface |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20110403 |