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Implementation method of dot matrix word library of embedded system

An embedded system and dot-matrix font technology, which is applied in the fields of electrical digital data processing, instruments, calculations, etc., can solve the problems of slow display speed and large space occupied by vector fonts, achieve small space occupation, improve font display quality, and high Show the effect of the effect

Inactive Publication Date: 2007-08-01
SHENZHEN SKYWORTH DIGITAL TECH CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for realizing a dot matrix font library of an embedded system, which can generate a dot matrix font library according to the user's definition according to the existing vector font library, thereby overcoming the shortcomings of the large space occupied by the vector font library and slow display speed, and providing better display quality

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  • Implementation method of dot matrix word library of embedded system

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Embodiment Construction

[0028] Preferred embodiments of the present invention are described in detail below.

[0029] The invention provides a method for realizing a dot matrix font of an embedded system and related technologies thereof, including: a method for realizing the dot matrix font described in the present invention (hereinafter referred to as the new dot matrix font), and internal files of the new dot matrix font Format, GUI system calls a set of interface functions of the font. The font implementation method, that is, the implementation method of the font, extracts a font of a certain size from the vector font file and stores the font in the format of the new dot matrix font, thereby generating the new dot matrix font. The internal file format of the new dot matrix font describes the rules of how font information is arranged in the file. A set of call interface functions for the new font library in the GUI system. They are defined to facilitate the porting of the new dot matrix font libra...

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Abstract

This invention provides one imbed system point array word database method, which comprises the following steps: a, initiating Freetype vector word engine; b, opening one vector word file and establishing one word outlook; c, selecting one set character set for its size; d, taking aim character set first one and feeding back its character code; e, converting into set character code; f, sending Freetype engine and taking character position pattern array and control information; g, converting the control information into point array character memory form; h, storing the converted information into point array; I, judging whether the aim character set is last one, if not then taking aim set next one executing step e; j, writing point database file head information and bias information.

Description

technical field [0001] The invention relates to font display of an embedded system, in particular to a method for realizing a dot matrix font library of an embedded system. Background technique [0002] As embedded systems are more and more widely used, the requirements for display quality of interfaces of embedded systems are also getting higher and higher. In the display quality of the interface, the display of fonts plays a decisive role. A good interface cannot give full play to its characteristics and advantages without the cooperation of excellent high-quality fonts. The existing fonts used for embedded system interface can be divided into traditional dot matrix fonts and vector fonts. Each glyph of the traditional dot matrix font is composed of black and white pixel dot matrix. Commonly used dot matrix font specifications are 12 dot matrix, 14, 16, 24, 32, 48 dot matrix. Because a byte in the computer has 8 bits, which corresponds to 8 pixels of the display screen, ...

Claims

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Application Information

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IPC IPC(8): G06F17/21
Inventor 刘涛
Owner SHENZHEN SKYWORTH DIGITAL TECH CO LTD
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