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Digital map display method

A display method and digital map technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as feeling stiff, easy to lose reference information, and not considering the switching process speed, direction, humanized effect, etc. , to achieve the effect of continuous visual experience and smooth switching

Active Publication Date: 2007-02-28
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

[0005] The use of the above switching technology does not take into account (limited to its platform limitations and cannot be done) factors such as speed, direction, and humanized effects of the switching process, which makes people feel stiff and easy to lose reference information; it does not provide users with continuous visual effects

Method used

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Examples

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Embodiment Construction

[0022] In order to realize the smooth and rapid switching of the electronic map on the mobile terminal, and satisfy the sense of visual continuity of the human eye. On the mobile terminal, it is no longer necessary to call the application program API provided by the mobile terminal operating system to draw, and then use the general display output interface function to display the map on the current screen.

[0023] The invention realizes the switching of the map of the mobile terminal by adding a bottom video interface module in the system and combining the direct video output mode with the buffering technology. The direct video output method is to introduce the "video double buffering" mechanism of the "memory virtual video area", and according to the change frequency of the map screen content, the direct video output provides a full-screen update and incremental update mechanism; directly the content of the virtual video area Overlay (DUMP) to the actual video storage area, ...

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Abstract

The invention relates to a digit map display method, which comprises: (1), recording initial map information present display at screen in the client software of terminal; (2), reducing the virtual video area of map stepped; (3), judging if the initial map is reduced to middle ratio value, if it is, executing step 4, or else, executing step 2; 4, reducing the virtual video area and translating it to the target point; 5, judging if the ratio rule of preset map is needed one, if it is, executing step 6, or else, executing step 4; 6, based on the zoom factor, zooming the virtual video area, and translating the virtual video area to the target point; 7, when the target point reaches the center of screen, the terminal client zooms present displayed map; 8, when the ratio rule of map reaches initial ratio rule, setting the target point as the focus point of terminal.

Description

technical field [0001] The invention relates to a digital map display method, in particular to a mobile terminal digital map display method based on a GIS engine. Background technique [0002] At present, the scene switching technology in the mobile terminal electronic map based on WAP, JAVA, Brew and other middleware is all blunt direct switching, uniform switching and no scaling. The text or graphic image display on the terminal screen is generally It is realized through the standard display output interface function provided by the terminal operating system. This standard interface function is common, but the efficiency is low. The specific implementation method of jumping from point A to point B in the above-mentioned various implementations of mobile terminal electronic maps is as follows: [0003] Jump from point A to point B. Point A is the center point of the current mobile phone screen, and point B is the target position point. After the jump, point B becomes the ...

Claims

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Application Information

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IPC IPC(8): G06F17/00G06F17/30H04Q7/32
Inventor 彭华唐剑峰于蓉蓉邹德斌张立群钟瑜伟高键
Owner CHINA MOBILE COMM GRP CO LTD
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