Method, device and system for positioning of touch control point, display terminal and writing pen

Abstract

The invention discloses a method, device and system for positioning of a touch control point. The method comprises the steps that a positioning image with position encoding information is sent to a display terminal under a set frequency, so the positioning image is displayed by the display terminal; further, a touch control image which is sent by a writing pen and is shot and obtained when the writing pen conducts a touch control operation on the display terminal with the displayed positioning image is received; then, the position encoding information in the touch control image is extracted; and the position of a touch control point in the positioning image is determined according to the extracted position encoding information, so a touch control position of the writing pen on the display terminal can be positioned. According to the invention, on the premise that cost is low and the size of display terminal is not increased, the touch control point on the display terminal can be positioned, so cost is saved; and the display terminal with a touch control point positioning function is lighter, thinner and nicer, so user's experience is improved effectively.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a touch point positioning method, device, system, display terminal and writing pen. Background technique [0002] The display terminal can convert computer data into various characters, numbers, symbols or intuitive images and display them, and is widely used in teaching, office, conference and display and other fields. [0003] Usually, the display terminal can only be used for display. If touch control of the content displayed on the display terminal and writing operation on the interface displayed on the display terminal are to be realized, the first thing is to realize the positioning of the touch point. In existing solutions, touch point positioning is realized by adding an additional touch device such as an infrared touch screen, a capacitive touch screen, or an electromagnetic touch screen on a display terminal. [0004] However, in the process of implementing...

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Problems solved by technology

[0004] However, in the process of implementing the present invention, the inventors found that the prior art has at least the following deficiencies. The cost of adding an additional touch device to the display terminal is high, the hardware structure is complicated, and the volume of the display terminal is increased. poor user experience

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