CN103137047B - A kind of on TFT liquid crystal display the system and method for Display control computer screen arbitrary region - Google Patents
A kind of on TFT liquid crystal display the system and method for Display control computer screen arbitrary region Download PDFInfo
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- CN103137047B CN103137047B CN201110392812.1A CN201110392812A CN103137047B CN 103137047 B CN103137047 B CN 103137047B CN 201110392812 A CN201110392812 A CN 201110392812A CN 103137047 B CN103137047 B CN 103137047B
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Abstract
The present invention relates to a kind of on TFT liquid crystal display the system and method for Display control computer screen arbitrary region, described method needs the coordinate information of viewing area by collection, send it to flush bonding processor, flush bonding processor is according to the original position coordinate and the area size that need viewing area, the form that needs the data of viewing area to require according to TFT liquid crystal display and sequential sent to TFT liquid crystal display and show. Provided by the invention on TFT liquid crystal display the system and method for Display control computer screen arbitrary region, reduced the complexity that TFT liquid crystal display is shown to test, improved the efficiency that shows test.
Description
Technical field
The present invention relates to the test that liquid crystal display shows, relate in particular to one and calculate in TFT liquid crystal screen displayThe system and method for machine screen arbitrary region.
Background technology
As everyone knows, each point of TFT LCDs is made up of RGB three parts, ordinary circumstanceThe point of the TFT LCDs that lower 15 cun of resolution ratio are 1024X768 is apart from being 0.30mm left and right. TFTLCDs is different from CRT monitor, and it has fixing resolution ratio, is only specifying dividing of usingDistinguish that under rate, its image quality is just best, can be in the mode of expansion or compression, by picture under other resolution ratioShow.
In to the development and Design of TFT liquid crystal display application, conventionally can use computer hardware platforms to showShow the simulation of effect, but finally still will on TFT liquid crystal display, show test. Current test isThe data of the simulation display effect of debugging are on computers transferred in memory by the mode of downloading,Again from memory by data upload to processor, send data to TFT liquid crystal display by processor and carry outShow test; In the time that test result is defective, the step of repeat again above-mentioned debugging, download, uploading,Qualified until show test results. So not only increase the fussy degree that shows test job, andAnd owing to uploading frequently, downloading, also can cause greatly reduce the service life of hardware platform.
Summary of the invention
Technical problem to be solved by this invention is to provide one Display control computer screen on TFT liquid crystal displayThe system and method for arbitrary region, obtains the demonstration data on computer screen by LVDS display interface,And transmitted the coordinate information in region to be shown by serial communication interface, the demonstration data in coordinate range are existedTFT liquid crystal screen display, the present invention has reduced the complexity that TFT liquid crystal display is shown to test, improvesShow test efficiency.
The present invention, in order to solve the problems of the technologies described above, discloses one Display control computer on TFT liquid crystal displayThe system of screen arbitrary region, what described system comprised main frame, is connected with main frame showsShow device, it is characterized in that, described system also comprises flush bonding processor, TFT liquid crystal display, for calculatingBetween machine host and flush bonding processor, carry out the LVDS interface of data interaction and serial communication interface, withAnd for carrying out the TFTLCD interface of transfer of data between flush bonding processor and TFT liquid crystal display.
Further, described flush bonding processor comprises that LVDS signal conversion unit, serial communication signal turnChange unit and DPS unit, wherein,
Described LVDS signal conversion unit, shows data letter for receiving the LVDS of LVDS interface transmissionNumber, and LVDS display data signal is converted to TTL signal;
Described serial communication signal converting unit, for receiving the serial communication letter of serial communication interface transmissionNumber, and serial communication signal is converted to TTL signal, the while is the TTL for DPS unit is sent alsoSignal is converted to serial communication signal;
Described DPS unit, for receiving LVDS signal conversion unit and serial communication signal converting unitThe TTL signal of conversion, and TTL signal is processed and generated data to be displayed;
Described sram cell, the data to be displayed generating for storing DPS unit, then by DPS unitRead the data to be displayed of sram cell storage and data to be displayed is transferred to by TFTLCD interfaceTFT liquid crystal display shows.
Further, described system also comprises power module, and described power module is used to described system to provideWorking power.
The invention also discloses a kind of on TFT liquid crystal display the method for Display control computer screen arbitrary region,Described method comprises the steps:
Steps A, obtains the coordinate signal that needs viewing area on computer screen, and is converted into TTLSignal;
Step B, obtains LVDS display data signal and is converted into TTL signal;
Step C, processes the TTL signal of described steps A and step B conversion to generate number to be shownAccording to, the data to be displayed of described generation is stored;
Step D, by the data to be displayed of described storage in TFT liquid crystal screen display.
Adopt the beneficial effect of the invention described above technical scheme to be: the present invention needs viewing area by collectionCoordinate information, sends it to flush bonding processor, and flush bonding processor is according to needing the initial of viewing areaPosition coordinates and area size, by the form that needs the data of viewing area to require according to TFT liquid crystal display and timeOrder sends to TFT liquid crystal display and shows. Provided by the invention on TFT liquid crystal display Display control computer screenThe system and method for curtain arbitrary region, has reduced the complexity that TFT liquid crystal display is shown to test, improvesShow test efficiency.
Brief description of the drawings
Fig. 1 be in the embodiment of the present invention on TFT liquid crystal display the system of Display control computer screen arbitrary regionStructure chart;
Fig. 2 is the cut-away view of flush bonding processor in the embodiment of the present invention;
Fig. 3 be in the embodiment of the present invention on TFT liquid crystal display the method for Display control computer screen arbitrary regionFlow chart.
Detailed description of the invention
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example is only for explaining thisInvention, is not intended to limit scope of the present invention.
The present invention's one example provide a kind of on TFT liquid crystal display Display control computer screen arbitrary region beSystem, as shown in Figure 1: described system comprises main frame 101, is connected with main frame 101Display 103, flush bonding processor 106, TFT liquid crystal display 108, for main frame 101 withBetween flush bonding processor 106, carry out the LVDS interface 104 of data interaction and serial communication interface 105,And for carrying out the TFTLCD of transfer of data between flush bonding processor 106 and TFT liquid crystal display 108Interface 107; In embodiments of the present invention, described system also comprises and to be used to system that working power is providedPower module 102.
Fig. 2 is the cut-away view of flush bonding processor in the embodiment of the present invention, as shown in Figure 2: described inFlush bonding processor 106 comprise LVDS signal conversion unit 202, serial communication signal converting unit 201,DPS unit 203 and sram cell 204, wherein, described LVDS signal conversion unit 202, for connecingReceive the LVDS display data signal that LVDS interface 104 transmits, and LVDS display data signal is changedFor TTL signal; Described serial communication signal converting unit 201, for receiving serial communication interface 105The serial communication signal of transmission, and is converted to TTL signal by serial communication signal, simultaneously also for by DPSThe TTL signal that unit 203 sends is converted to serial communication signal; Described DPS unit 203, for connecingReceive the TTL signal that LVDS signal conversion unit 202 and serial communication signal converting unit 201 are changed,And TTL signal is processed and generated data to be displayed; Described sram cell 204, for storing DPSThe data to be displayed that unit 203 generates, then read by DPS unit 203 that sram cell 204 storesData to be displayed also transfers to TFT liquid crystal display 108 by data to be displayed by TFTLCD interface 107 and entersRow shows.
In the time of concrete application, described main frame 101 can adopt the mainboard of EPIA-M840; DescribedFlush bonding processor 106 can adopt XC3S500E processor chips; Described LVDS signal conversion unit202 can adopt DS90CF386 chip; Described serial communication signal converting unit 201 can adoptMAX3232 chip. Certainly, those skilled in the art also can be according to above-mentioned functions, adopts other coresSheet is in order to replace, still, within the spirit and principles in the present invention all, any amendment of doing, is equal toReplacement, improvement etc., within all should being included in protection scope of the present invention.
Another embodiment of the present invention provides one Display control computer screen arbitrary region on TFT liquid crystal displayMethod, as shown in Figure 3: described method comprises the steps:
Step 301, obtains the coordinate signal that needs viewing area on computer screen, and is converted into TTLSignal;
In this embodiment, getting position, the computer screen upper left corner is screen initial point, and X-direction is to the rightJust, Y direction is downwards for just. Needing viewing area size X-direction is X1, and Y direction is Y1, needsViewing area origin coordinates is (X, Y); Screen corresponding resolution ratio field before, before and after shoulder be respectivelyV_f, v_b, before row, before and after row, shoulder is respectively h_f, h_b.
When the each field sync signal rising edge of flush bonding processor, give and calculate owner by serial communication interfaceMachine sends a signal, and main frame is received after this signal, obtains the starting point coordinate that needs viewing area(X, Y), (viewing area has and drops on outside whole screen area in first whether out-of-bounds of judgement (X, Y)Part), if out-of-bounds, main frame sends out-of-bounds by serial communication interface to flush bonding processorSignal, flush bonding processor initializes liquid crystal display, repeats said process and debugs; If not out-of-bounds,Main frame sends (X, Y) coordinate by serial communication interface to flush bonding processor, embeddedThis coordinate signal is converted to TTL signal by processor, and flush bonding processor is converted to enable signal simultaneouslySerial communication signal sends to main frame, realizes both sides' communication.
Step 302, obtains LVDS display data signal and is converted into TTL signal;
LVDS display data signal transfers in flush bonding processor by LVDS interface, by LVDS signalConverting unit is converted into TTL signal, and the line synchronising signal of unstringing out (hsync), field synchronizationSignal (vsync), data useful signal (de), pixel clock signal (pclk) and each pixelThe rgb signal of point etc.
Step 303, the TTL signal that described step 301 and step 302 are changed is processed to generate and is treatedShow data, and the data to be displayed of described generation is stored;
In this embodiment, described data to be displayed is the available point picture within the coordinate figure scope of transmittingThe RGB data of element. Described flush bonding processor is the speed with pixel clock by the RGB data of available point pixelDegree writes sram cell and stores.
Step 304, by the data to be displayed of described storage in TFT liquid crystal screen display.
In this embodiment, after the RGB of whole available point pixels data have write, embedded processingDevice is read the data that write from sram cell again, and the form specifying according to TFT liquid crystal display and timeOrder drive TFT liquid crystal display shows.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, not all in the present inventionSpirit and principle within, any amendment of doing, be equal to replacement, improvement etc., all should be included in thisWithin bright protection domain.
Claims (4)
1. a system for Display control computer screen arbitrary region on TFT liquid crystal display, comprises computerMain frame, the display being connected with main frame, is characterized in that, described system also comprises embeddedProcessor, TFT liquid crystal display, for carrying out data interaction between main frame and flush bonding processorLVDS interface and serial communication interface and for counting between flush bonding processor and TFT liquid crystal displayReportedly defeated TFTLCD interface;
Getting position, the computer screen upper left corner is screen initial point, and X-direction is being to the right for just, Y direction toLower to just, needing the big or small X-direction in viewing area is X1, and Y direction is Y1, needs the initial seat in viewing areaBe designated as (X, Y); Screen before the field of corresponding resolution ratio, before and after shoulder be respectively v_f, v_b, before row,Before and after row, shoulder is respectively h_f, h_b;
When the each field sync signal rising edge of flush bonding processor, give and calculate owner by serial communication interfaceMachine sends a signal, and main frame is received after this signal, obtains the starting point coordinate that needs viewing area(X, Y), first whether out-of-bounds of judgement (X, Y), wherein viewing area is dropped on outside whole screen areaPart be out-of-bounds, if out-of-bounds, main frame is sent out to flush bonding processor by serial communication interfaceSend sector signal, flush bonding processor initializes liquid crystal display, repeats said process and debugs; IfNot out-of-bounds, main frame sends (X, Y) coordinate by serial communication interface to flush bonding processor,This coordinate signal is converted to TTL signal by flush bonding processor, and flush bonding processor is by enable signal simultaneouslyBe converted to serial communication signal and send to main frame, realize both sides' communication.
2. system according to claim 1, is characterized in that, described flush bonding processor comprisesLVDS signal conversion unit, serial communication signal converting unit, DPS unit and sram cell, wherein,
Described LVDS signal conversion unit, shows data letter for receiving the LVDS of LVDS interface transmissionNumber, and LVDS display data signal is converted to TTL signal;
Described serial communication signal converting unit, for receiving the serial communication letter of serial communication interface transmissionNumber, and serial communication signal is converted to TTL signal, the while is the TTL for DPS unit is sent alsoSignal is converted to serial communication signal;
Described DPS unit, for receiving LVDS signal conversion unit and serial communication signal converting unitThe TTL signal of conversion, and TTL signal is processed and generated data to be displayed;
Described sram cell, the data to be displayed generating for storing DPS unit, then by DPS unitRead the data to be displayed of sram cell storage and data to be displayed is transferred to by TFTLCD interfaceTFT liquid crystal display shows.
3. system according to claim 1 and 2, is characterized in that, described system also comprises electricitySource module, described power module is used to described system that working power is provided.
4. a method for Display control computer screen arbitrary region on TFT liquid crystal display, is characterized in that,Described method comprises the steps:
Steps A, obtains the coordinate signal that needs viewing area on computer screen, and is converted into TTLSignal;
Wherein display is connected with main frame, between main frame and flush bonding processor, carries outData interaction, carries out transfer of data between flush bonding processor and TFT liquid crystal display;
Getting position, the computer screen upper left corner is screen initial point, and X-direction is being to the right for just, Y direction toLower to just, needing the big or small X-direction in viewing area is X1, and Y direction is Y1, needs the initial seat in viewing areaBe designated as (X, Y); Screen before the field of corresponding resolution ratio, before and after shoulder be respectively v_f, v_b, before row,Before and after row, shoulder is respectively h_f, h_b;
When the each field sync signal rising edge of flush bonding processor, give and calculate owner by serial communication interfaceMachine sends a signal, and main frame is received after this signal, obtains the starting point coordinate that needs viewing area(X, Y), first whether out-of-bounds of judgement (X, Y), wherein viewing area is dropped on outside whole screen areaPart be out-of-bounds, if out-of-bounds, main frame is sent out to flush bonding processor by serial communication interfaceSend sector signal, flush bonding processor initializes liquid crystal display, repeats said process and debugs; IfNot out-of-bounds, main frame sends (X, Y) coordinate by serial communication interface to flush bonding processor,This coordinate signal is converted to TTL signal by flush bonding processor, and flush bonding processor is by enable signal simultaneouslyBe converted to serial communication signal and send to main frame, realize both sides' communication;
Step B, obtains LVDS display data signal and is converted into TTL signal;
Step C, processes the TTL signal of described steps A and step B conversion to generate number to be shownAccording to, and the demonstration data to be shown of described generation are stored;
Step D, by the data to be displayed of described storage in TFT liquid crystal screen display.
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| CN102157139A (en) * | 2011-05-05 | 2011-08-17 | 天马微电子股份有限公司 | Liquid crystal display module and liquid crystal display controller |
| CN202383976U (en) * | 2011-12-01 | 2012-08-15 | 北京牡丹视源电子有限责任公司 | System displaying any area of computer screen on TFT liquid crystal screen |
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| JP4864027B2 (en) * | 2008-02-25 | 2012-01-25 | 株式会社コンテック | PC image distribution equipment |
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| EP0764932A2 (en) * | 1995-09-07 | 1997-03-26 | SAMSUNG ELECTRONICS Co. Ltd. | A screen clearing circuit, a liquid crystal display device having the same and a method of driving the same |
| CN101431693A (en) * | 2007-11-05 | 2009-05-13 | 深圳Tcl新技术有限公司 | Screen distribution apparatus of panel TV |
| CN101916176A (en) * | 2010-07-15 | 2010-12-15 | 汉王科技股份有限公司 | Adjustable liquid crystal display screen and implement method thereof |
| CN102157139A (en) * | 2011-05-05 | 2011-08-17 | 天马微电子股份有限公司 | Liquid crystal display module and liquid crystal display controller |
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