CN2711800Y - Bus interface process system for LCD - Google Patents
Bus interface process system for LCD Download PDFInfo
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- CN2711800Y CN2711800Y CN 200420066259 CN200420066259U CN2711800Y CN 2711800 Y CN2711800 Y CN 2711800Y CN 200420066259 CN200420066259 CN 200420066259 CN 200420066259 U CN200420066259 U CN 200420066259U CN 2711800 Y CN2711800 Y CN 2711800Y
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- 238000000034 method Methods 0.000 title description 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 230000003068 static effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 8
- 101150080233 LCD gene Proteins 0.000 description 31
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model relates to the field of interface processing, in particular to a bus interface processing system used for a liquid crystal display screen (LCD). The bus interface processing system of the utility model comprises a straight through processing module, a command data sending module, an image data conversion module, and a strobe module. An upper-position machine sends a command toward the liquid crystal display screen by the straight through processing module, and the liquid crystal display screen is activated, and at this time, the strobe module releases a bus to the straight through processing module. The upper-position machine sends a command data to the command data sending module after the liquid crystal display screen is activated. The command data denotes the position information of the display image of an image data on the liquid crystal display screen, at this time, the strobe module sends the command data received by the command data sending module onto the liquid crystal display screen, and the image data conversion module transmits the image data onto the liquid crystal display screen by the strobe module.
Description
Technical field
The utility model relates to the interface process field, specifically, relates to a kind of bus interface disposal system that is used for LCDs (LCD).
Background technology
Along with developing rapidly of multimedia field application products such as mobile phone, people are more and more higher to the quality requirements that image shows, and are also more and more higher to the requirement of LCD.Shield 256 looks by monochrome the earliest, 4096 looks, the 64K look is to the 260K look of up-to-date appearance.Bus interface requires the demand of the liquid crystal display of the various colors of support to become increasingly conspicuous under constant situation.
The kind of data processing is comprehensive inadequately among the existing mobile industry interface disposal system MIPI (Mobile Industry Processor Interface), can not adapt to the requirement of some display screens.As the LTMO18A of TOSHIBA, this application to it is a restriction.
The utility model content
The purpose of this utility model is for the bus interface disposal system of a kind of LCD of being used for being provided, improving the usability that chip is supported display screen.
For achieving the above object, the utility model provides scheme as follows:
A kind of bus interface disposal system that is used for LCD, it receives host computer 5 view data that transmission is instructed and image processing module 7 sends, and this instruction is sent to LCD6.
Described bus interface disposal system comprises straight-through processing module 1, order data sending module 2, view data conversion module 3, gating module 4; Send instruction by straight-through processing module 1 to LCD6 by host computer 5, and LCD6 activated, this moment, gating module 4 discharged bus to straight-through processing module 1, after LCD6 is activated, host computer 5 sends order data to order data sending module 2, these order data indicating image data will be on LCD6 the positional information of display image, at this moment, the order data that gating module 4 receives order data sending module 2 sends on the LCD6, and view data conversion module 3 is sent to view data on the LCD6 through gating module 4.
View data conversion module 3 described in the utility model comprises static store 31, converting unit 32, the formatting unit 33 of ping-pong structure, the view data that image processing module 7 is sent deposits in the static memory 31, converting unit 32 is read the view data in the static memory 31, and the format conversion of view data become the RGB data layout, data with RGB data layout are sent in the formatting unit 33, formatting unit 33 carries out conversion with the RGB data output format of receiving as required, the RGB data is removed low level keep high-order operation.
Straight-through processing module 1 described in the utility model is directly the requirement according to LCD of the bus of host computer 5 to be realized the bus of screen operation is connected.
Straight-through processing module 1 described in the utility model comprises register module 10.
Straight-through processing module 1 described in the utility model also comprises directly the requirement according to LCD of the bus of host computer 5 realized the bus of screen operation is connected, and described bus connects the direct-passing mode of selecting to realize host computer 5 and LCD6 with register module 10 by gating module 16.
Compared with prior art, advantage of the present utility model is:
In the bus interface disposal system described in the utility model, have straight-through processing module, this module can be given host computer with the control of screen under the prerequisite of any resource of not utilizing system, makes host computer can directly control LCD; The view data conversion module that the utlity model has makes this interface disposal system can support the LCD of plurality of specifications; Order data sending module described in the utility model adopts configurable order data form, can send various format address information flexibly, has improved the usability of chip.
The utility model purpose, characteristics and advantage are further described with reference to the accompanying drawings in conjunction with the embodiments.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is the structured flowchart of view data conversion module described in the utility model.
Fig. 3 is the structured flowchart of straight-through processing module described in the utility model.
Fig. 4 is mechanism's block diagram of register module described in the utility model.
Fig. 5 is the data layout of 256 looks under 8 buses.
Fig. 6 is the data layout of 4096 looks under 8 buses.
Fig. 7 is the data layout of 64K look under 8 buses.
Fig. 8 is the data layout of 256K look under 8 buses.
Fig. 9 is the data layout of 4G look under 8 buses.
Figure 10 is the data layout of 256 looks under 16 buses.
Figure 11 is the data layout of 4K look under 16 buses.
Figure 12 is the data layout of 64K look under 16 buses.
Figure 13 is first kind of data layout of 256K look under 16 buses.
Figure 14 is second kind of data layout of 256K look under 16 buses.
Figure 15 is the third data layout of 256K look under 16 buses.
Figure 16 is the data layout of 4G look under 16 buses.
Embodiment
With reference to accompanying drawing 1, be structured flowchart of the present utility model.A kind of bus interface disposal system that is used for LCD, it receives the view data that the host computer transmission is instructed and image processing module sends, and this instruction is sent to LCD.
Described bus interface disposal system comprises straight-through processing module, order data sending module, view data conversion module, gating module; Send instruction by straight-through processing module to LCD by host computer, and LCD activated, this moment, the gating module discharged bus to straight-through processing module, after LCD is activated, host computer sends order data to the order data sending module, these order data indicating image data will be on LCD the positional information of display image, at this moment, the order data that the gating module receives the order data sending module sends on the LCD, and the view data conversion module is sent to view data on the LCD through the gating module.
With reference to Fig. 2 is view data conversion module described in the utility model, static store (the SRAM A that comprises ping-pong structure, SRAM B), converting unit, formatting unit, the view data that image processing module is sent deposits in the static memory, converting unit is read the view data in the static memory, and the format conversion of view data become the RGB data layout, data with RGB data layout are sent in the formatting unit, formatting unit carries out conversion with the RGB data output format of receiving as required, the RGB data is removed low level keep high-order operation.
With reference to Fig. 3 is straight-through processing module described in the utility model, directly the requirement according to LCD of the bus of host computer is realized the bus of screen operation is connected.
Straight-through processing module described in the utility model comprises register module.
With reference to Fig. 4, register module described in the utility model comprises command selection sign register (RS_REG), write signal register (WR_REG), read signal register (RD_REG), data bus register (DATA_REG), chip selection signal register (CS_REG); Host computer is delivered to command in the data bus register (DATA_REG), and corresponding information is delivered to command select in sign register (RS_REG), write signal register (WR_REG), read signal register (RD_REG), the chip selection signal register (CS_REG), after host computer is sent an operational order, select value in sign register (RS_REG), write signal register (WR_REG), read signal register (RD_REG), the chip selection signal register (CS_REG) to deliver to the bus that connects LCD command and get on.
Straight-through processing module described in the utility model comprises also directly the requirement according to LCD of the bus of host computer is realized the bus of screen operation is connected that described bus connects the direct-passing mode of selecting to realize host computer and LCD with register module by the gating module.
With reference to Fig. 2, and the yuv format that transmits by image processing module (YUV: color format (Colour Space) a kind of, Y represents light darkness (Luminance), and U representative color (Hue), V are represented saturation degree (Saturation) view data.At first send in the static memory (SRAM) of a table tennis and carry out buffer memory.Change another SRAM after being filled with a SRAM, reading of data from the SRAM of full of data.The data layout of YUV is transformed to the data layout (being to represent each o'clock) of RGB by modular converter (YUV-RGB) by the RGB data of 24 bits.Transformational relation is
R＝RYC*(Y-RYO)+RUC*(U-RUO)+RVC*(V-RVO)+RGO
G＝GYC*(Y-GYO)+GUC*(U-GUO)+GVC*(V-GVO)+GGO
B＝BYC*(Y-BYO)+BUC*(U-BUO)+BVC*(V-BVO)+BGO
R, G, B, Y, U, V are the data of RGB and YUV..RYC is arranged on the parameter in the register, and is given by host computer.
At this moment, the RGB data that generate 24 are sent to formatting module (Format).Format is actual to be that the RGB data output format of sending into is as required carried out conversion.This 24 bit is removed low level keep high-order operation.Output format such as Fig. 5 are to shown in Figure 16.
With reference to Fig. 3, straight-through processing module described in the utility model directly connects together the control signal and the LCD of host computer.Directly control LCD by host computer.Can directly not utilize any resource of system like this.Give host computer with the right of control screen.The bus of LCD comprises command selection signal RS, write signal WR, read signal RD, data bus DATA, chip selection signal CS.
During designing, straight-through mode is divided into two kinds.
1. the bus with gating module (MUX) is directly connected on the bus of LCD.
2. pass through the bus of register controlled LCD.
The 1st kind of mode is exactly directly to control the bus of host computer, realizes operation to screen according to the requirement of LCD.
The 2nd kind of mode is four kinds of registers of definition in module, and command is selected sign register RS_REG, write signal register WR_REG, read signal register RD_REG, data bus register DATA_REG, chip selection signal register CS_REG, order or the data that will deliver on the LCD screen are delivered among the DATA_REG by host computer, RS as required, WR, RD, the state of CS (not shown) divides high-low level to be sent to relevant register RS_REG respectively, WR_REG, RD_REG, CS_REG.So when register all prepare after, host computer is sent an operational order.The bus of value in the register being delivered to screen gets on.
This dual mode can be selected to realize by a gate (MUX).The same time only allows a kind of mode to come the bus of control flow.Writing register by host computer controls and selects signal to select direct-passing mode.
A kind of bus interface disposal system that is used for LCDs described in the utility model, be not restricted to listed utilization in instructions and the embodiment, it can be applied to the field of various suitable the utility model fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore under the situation of the spirit and scope of the universal that does not deviate from claim and equivalency range and limited, the examples shown that the utility model is not limited to specific details, representational equipment and illustrates here and describe.
Claims (6)
1, a kind of bus interface disposal system that is used for LCDs, it receives the view data that host computer (5) transmission is instructed and image processing module (7) sends, and this instruction is sent to LCDs (6), it is characterized in that:
Described bus interface disposal system comprises straight-through processing module (1), order data sending module (2), view data conversion module (3), gating module (4);
Send instruction by straight-through processing module (1) to LCDs (6) by host computer (5), and LCDs (6) activated, gating module this moment (4) discharges bus to straight-through processing module (1), after LCDs (6) is activated, host computer (5) sends order data to order data sending module (2), these order data indicating image data to go up the positional information of display image in LCDs (6), at this moment, the order data that gating module (4) receives order data sending module (2) sends on the LCDs (6), and view data conversion module (3) is sent to view data on the LCDs (6) through gating module (4).
2, bus interface disposal system according to claim 1, it is characterized in that: described view data conversion module (3) comprises the static store (31) of ping-pong structure, converting unit (32), formatting unit (33), the view data that image processing module (7) is sent deposits in the static memory (31), converting unit (32) is read the view data in the static memory (31), and the format conversion of view data become the RGB data layout, data with RGB data layout are sent in the formatting unit (33), formatting unit (33) carries out conversion with the RGB data output format of receiving as required, the RGB data is removed low level keep high-order operation.
3, bus interface disposal system according to claim 1 is characterized in that: described straight-through processing module (1) is directly the requirement according to LCDs of the bus of host computer (5) to be realized the bus of screen operation is connected.
4, bus interface disposal system according to claim 1 is characterized in that: described straight-through processing module (1) comprises register module (10).
5, bus interface disposal system according to claim 4 is characterized in that: described register module (10) comprises command selection sign register RS_REG (11), write signal register WR_REG (12), read signal register RD_REG (13), data bus register DATA_REG (14), chip selection signal register CS_REG (15); Host computer (5) is delivered to command among the data bus register DATA_REG (14), and corresponding information is delivered to command select sign register RS_REG (11), write signal register WR-_REG (12), read signal register RD_REG (13), among the chip selection signal register CS_REG (15), after host computer (5) is sent an operational order, command is selected sign register RS_REG (11), write signal register WR_REG (12), read signal register RD_REG (13), value among the chip selection signal register CS_REG (15) is delivered to the bus that connects LCDs and is got on.
6, bus interface disposal system according to claim 5, it is characterized in that: described straight-through processing module (1) comprises also directly the requirement according to LCDs of the bus of host computer (5) is realized the bus of screen operation is connected that described bus connects the direct-passing mode of selecting to realize host computer (5) and LCDs (6) with register module (10) by gating module (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420066259 CN2711800Y (en) | 2004-06-25 | 2004-06-25 | Bus interface process system for LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420066259 CN2711800Y (en) | 2004-06-25 | 2004-06-25 | Bus interface process system for LCD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2711800Y true CN2711800Y (en) | 2005-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420066259 Expired - Lifetime CN2711800Y (en) | 2004-06-25 | 2004-06-25 | Bus interface process system for LCD |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347661C (en) * | 2004-06-25 | 2007-11-07 | 北京中星微电子有限公司 | Interface processing system of bus for liquid-crystal displaying device |
-
2004
- 2004-06-25 CN CN 200420066259 patent/CN2711800Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347661C (en) * | 2004-06-25 | 2007-11-07 | 北京中星微电子有限公司 | Interface processing system of bus for liquid-crystal displaying device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040625 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |