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Character quick refresh display method for no-word-stock monochrome dot matrix display screen

A display method and display screen technology, applied to static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of low refresh rate, not fast and smooth enough, and achieve the effect of fast refresh

Inactive Publication Date: 2019-01-01
WUHAN HUAFENG ELECTRONICS ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this special character refresh method is not fast and smooth enough, and the refresh rate is low

Method used

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  • Character quick refresh display method for no-word-stock monochrome dot matrix display screen
  • Character quick refresh display method for no-word-stock monochrome dot matrix display screen

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Embodiment Construction

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0018] like figure 1 As shown in FIG. 2 , it is a flow chart of the fast refresh display method according to the embodiment of the present invention.

[0019] figure 2 It is a schematic diagram of a signal icon dot matrix according to an embodiment of the present invention.

[0020] The present invention will be described in further detail below through the embodiments in conjunction with the accompanying drawings.

[0021] In this embodiment, it is displayed on the display screen figure 2 The 16×16 dot matrix signal icon shown in , here stipulates that the scanning method of the display screen is from left to right, first up and then down. According to the existing method, a total of 32 bytes of data should b...

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PUM

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Abstract

The invention relates to a character quick refresh display method for a no-word-stock monochrome dot matrix display screen. According to the method, two data cache areas are opened in the control program of the display screen, one area is used for storing the character dot matrix data information to be displayed, and the other area is used for storing the dot matrix data information in the currentdisplay screen cache. When the display screen content is updated, the dot matrix data requiring character display is searched in the dot matrix data table and written to the cache of characters to bedisplayed in turn and then compared with the data in the current display screen cache. Only the data in the cache to be displayed which is different from the data cache of the current display screencauses the change of the display screen content, and only the data is written into the memory of the display screen according to a certain order. Meanwhile, the dot matrix data information in the current display screen cache stored in the cache area is updated so as to realize quick refresh of the characters.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a character rapid refresh display method for a monochrome dot-matrix display screen without a font library. Background technique [0002] With the rapid development of society and technology, there is an increasing demand for information released in public places. The dot matrix display has the advantages of high brightness, low working voltage, low power consumption, miniaturization, long life, impact resistance and stable performance. It has grown into a mainstream product of flat panel display, and is widely used in information display and advertising in exhibition centers, financial markets, hospitals, stadiums, streets, highways and other public places. [0003] Common dot-matrix displays are divided into two types: displays with built-in fonts or external font chips, and displays without built-in fonts or external font chips. When completing the specified display tasks, d...

Claims

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Application Information

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IPC IPC(8): G09G5/22G09G5/393
CPCG09G5/22G09G5/393
Inventor 李进华王云杨路刚余浩尹文力
Owner WUHAN HUAFENG ELECTRONICS ENG
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