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Character rolling display method

A character display and text technology, applied in the field of screen display of embedded terminals, can solve the problem of high resource consumption, reduce complexity, avoid slowing down of character scrolling, and reduce resource consumption

Inactive Publication Date: 2010-03-03
BEIJING INTELLIX TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiency that the existing embedded terminal text scrolling display algorithm consumes too much resources, and provide a high-efficiency and low-complexity text scrolling implementation scheme

Method used

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  • Character rolling display method
  • Character rolling display method
  • Character rolling display method

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0026] The implementation method of embedded system text scrolling display provided by the present invention, taking the display of long file name in the file list as an example, includes a judging module whether scrolling is needed; a scrolling display module; a static display module, such as figure 1 shown.

[0027] In the discriminative module for scrolling, see figure 2 , first enter the while (mmaxWidth, it will return a TRUE value, which means that the entire file name length cannot be fully displayed in the displayable area of ​​the screen and needs to be scrolled show. If the above condition does not occur after the whole while loop is completed, it will return FALSE, which means that the entire file name can be completely displayed in the displayable area of ​​the screen without scrolling. Among them, 70 in the judgment condition is...

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Abstract

The invention provides a character rolling method. The method includes the following steps: 1) acquiring the number of characters capable of being displayed in a character display area of a screen; 2)setting a character display window, the length of which is 1 plus the number of the characters capable of being displayed in the character display area of the screen and the starting location of which is level with that of a character string to be displayed; 3) converting the characters in the current character display window into pixel lattice data; 4) reading the pixel lattice data into a cache, then conveying the pixel lattice data into a display channel to display the pixel lattice of the character string in the current cache and rolling the pixel lattice in the character display area ofthe screen at the speed of K rows of pixels per time; and 5) judging whether the character strings to be displayed are all displayed, if not, moving the character display window backwards by a character, releasing the cache and returning to step 3), otherwise, the display of the character strings is over. The method has the advantages of high efficiency and low complexity and is especially suitable for an embedded system.

Description

technical field [0001] The present invention relates to the technical field of on-screen display (OSD for short) of an embedded terminal, in particular, the present invention relates to a text scrolling display method. Background technique [0002] Text scrolling technology is a relatively common technology in media playback systems, especially in news releases or advertising insertions. The content to be released or inserted is mostly scrolled and played from left to right at the bottom of the screen. In many current embedded media playback systems, the above-mentioned scrolling form is very common. At the same time, the file names of many files are very long. When displaying the file list, one line on the interface cannot be completely displayed. This also requires that the file name be displayed in a scrolling form when the focus is moved to a file. [0003] The text display technology in the embedded system, taking the set-top box as an example, usually puts the text do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/445G09G5/24G09G5/30G09G5/34
Inventor 胡建良吴丽彬靳海力姜京梅齐向东陈晓
Owner BEIJING INTELLIX TECH
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