Writing method and device for electronic whiteboard

Abstract

The invention discloses a writing method and a writing device for an electronic whiteboard. The writing method comprises the following steps: acquiring a device file of a touch screen corresponding to the touch screen of the electronic whiteboard; reading the device file of the touch screen and acquiring touch event data from the device file of the touch screen; calculating track data displayed on the touch screen according to the touch event data; and calling a frame buffer interface and drawing a movement track on the touch screen based on the track data. According to the writing method and the writing device for the electronic whiteboard, a clicking event can be directly obtained from the device file of the touch screen, a screen writing operation is carried out by directly calling a frame caching interface at a bottom layer, the acquisition of a touch event and the screen writing operation are respectively finished in two threads, the operating efficiency is improved and the writing speed is quickened, the problem of writing track deviation is solved, the data displaying speed is obviously increased, the user experience of an electronic product is improved and the product quality and the product competitiveness are enhanced.

Description

technical field [0001] The invention relates to the technical field of electronic whiteboards, in particular to a writing method and device for electronic whiteboards. Background technique [0002] Electronic whiteboards, such as interactive electronic whiteboards, have functions such as writing, annotation, painting, multimedia entertainment, and network conferencing, and incorporate many technologies such as human-computer interaction, flat panel display, multimedia information processing, and network transmission. , teaching, graphic interactive presentation of the preferred product. At present, electronic whiteboards generally have an interactive panel with a large screen (for example, 70 inches), and the operating system of the electronic whiteboard is used to perform operations such as capturing touch events and drawing lines. In the use of the current electronic whiteboard, it is found that there are problems with poor writing experience, mainly in the slow writing s...

AI Technical Summary

Problems solved by technology

In the use of the current electronic whiteboard, it is found that there are problems with poor writing experience, mainly in the slow writing speed and large deviations in the writing track, which greatly affects the user experience.

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