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Color data display method

A data display, color technology, applied in static indicators, cathode ray tube indicators, instruments, etc.

Inactive Publication Date: 2009-07-08
HOLTEK SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use a lookup table (Lookup Table) to write the low-level external graphics data into the RAM of the high-level display system, for example, a first color area 201 data with N (N is an integer greater than 1) bits, to be converted into L( When L is an integer greater than or equal to N) bit first color storage unit 202 data, at first must first be provided with a comparison table 203 that deposits M groups of data, wherein M=2N and each group of data is L bits, so the N bits All combinations of the first color data will have a corresponding value in the comparison table 203 to be converted into L-bit high-order data. Although this method can completely make the pixels show a state of full darkness or full brightness, it must cooperate with a large number of The use of the register is to complete the operation of the comparison table and its decoding circuit, so it is not a suitable solution

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Embodiment Construction

[0037] In order to have a further cognition and understanding of the features, purposes and functions of the present invention, the detailed description is as follows with reference to the accompanying drawings.

[0038] see image 3 , which is a schematic diagram of the first preferred embodiment of the color data display method of the present invention. The purpose of this embodiment is to illustrate how to use the color data display method of the present invention to enable the pixels of a high-level display system to cover the range from full darkness to full brightness, thereby representing a low-level external graphic. It consists of the following steps:

[0039] Step 1, providing a color region data 301 and a color storage unit 302 . Wherein the source of the color region data 301 can be selected from a color unit data of R, G and B of a pixel in an external graphic, and the external graphic comes from a storage medium, a camera or other devices with A device for gra...

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Abstract

A color data display method is used to write a low-level external graphics data into a RAM (random access memory) of a high-level display system. Wherein this graphic data is in the process of writing this RAM, because the bit number of this RAM is more than the bit number of this graphic data, so this RAM can produce more than 1 vacancy, this moment, then this graphic data from this Write again at the highest vacant position of RAM until the RAM is filled. The color data display method of the present invention enables a high-level display system to display pixels from full darkness to full brightness without additional use of buffers or storage devices, thereby more accurately expressing a low-level display system. external graphics.

Description

technical field [0001] The present invention relates to a method for displaying color data, in particular to a method for writing a low-level external graphic data into a RAM (random access memory) of a high-level display system. Through the present invention, the display system will be used without In the case of additional use of a register or a storage device, the full dark or full bright state can be fully displayed. Background technique [0002] The grayscale brightness of a pixel in the display system is determined by the data of the RAM (random access memory) corresponding to the pixel, and the data of the RAM is composed of the data of the first, second and third color storage units. For example, a 256-level display system means that the grayscale brightness change of its pixels is represented by an 8-bit RAM, which is also divided into three color storage units, of which the first, second and third color storage units are The number of digits is 3, 3, and 2 respect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/02
Inventor 杨得鑫
Owner HOLTEK SEMICON