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Data interface circuit for LCD screen

A technology of LCD screen and data interface, applied in the field of LCD screen data interface circuit, can solve the problems of poor compatibility, prolonging the design cycle, and unfavorable for code inheritance.

Inactive Publication Date: 2008-12-24
WUXI ZGMICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of compatibility performance is not good, and repeated patching will prolong the design cycle, which is not conducive to the inheritance of code

Method used

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  • Data interface circuit for LCD screen
  • Data interface circuit for LCD screen
  • Data interface circuit for LCD screen

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Combining the characteristics of the LCD screen pixel data conversion format, the LCD screen can be classified into four categories:

[0022] 1) Read a pixel source data, and send out a write operation;

[0023] 2) Read a pixel source data and send it out in two write operations;

[0024] 3) Read a pixel source data and send it out in three write operations;

[0025] 4) Read two pixel source data and send them out in three write operations.

[0026] Figure 5 It is the interface data flow diagram of the present invention. In one cycle, one or two pixels may be read. Then, according to the required format of the LCD screen, the data is sent out in a certain way in several write operations to complete a loop operation.

[0027] Each write operation may be data of any bit segment in pixel 1 or pixel 2 RGB.

[0028] For each write operation, it is necessary to determine:

[0029] 1. Determine which format conversion type the LCD screen belongs to (the following uses ...

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PUM

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Abstract

The invention discloses an LCD screen data interface circuit and a method thereof. The circuit is characterized by comprising a mode register and a head data register; the mode register is applied to determining a format conversion type which the LCD screen belongs to and according to the format conversion type, the head data register regroups different pixels by bit so as to send the pixels to the LCD screen. The LCD screen data interface circuit and the method of the invention provide a set of relatively simple and universal interface fulfillment model, support all format conversion through changing a group of registers and need not to worry about incompatibility for being capable of supporting all novel LCD screens.

Description

technical field [0001] The invention relates to an LCD screen, in particular to an LCD screen data interface circuit. Background technique [0002] There are many types of LCD screens on the market, and the requirements for data interfaces and data formats are also different. The traditional interface circuit implementation scheme adopts the enumeration method to cover as many formats as possible. For each LCD screen with different formats, a set of circuits must be tailored to support it. Due to the fast updating speed of screens in the market, the traditional circuit structure does not support many new screens, and needs to be re-patched and the design of the hardware circuit structure needs to be modified. [0003] The traditional method is to design a set of corresponding circuits to support the input pixel format requirements of a special screen, and design as many format conversion circuits as possible by enumeration. At present, the main implementation methods can b...

Claims

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Application Information

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IPC IPC(8): G09G3/36
Inventor 周志涛
Owner WUXI ZGMICRO ELECTRONICS CO LTD