Laser pen indicating system and laser pen indicating cursor positioning method

Abstract

The invention discloses a laser pen indicating system and a laser pen indicating cursor positioning method. The laser pen indicating system comprises a laser pen, a processor, a camera, an optical filter and a projection screen, the laser pen is used for emitting a red light beam with a specific wavelength and acting to select a target file; the camera is used for capturing a light spot signal ona projection screen in real time, and the optical filter is located on a lens of the camera and used for filtering an interference light source; the projection screen is used for displaying a target file, a light spot signal and a selection action of selecting the target file by the laser pen in real time; and the processor is embedded in the laser pen and the camera and is used for acquiring position information and key codes of light spots and realizing conversion between key actions of the laser pen and selection actions of the projection screen. Interference is removed through the opticalfilter, stable and reliable positioning of light spots is achieved, and coding is effective and errorless; meanwhile, the cost of the laser pen mouse transceiving system is reduced, and power is saved.

Description

technical field [0001] The invention belongs to the technical fields of optical instruments and computers, and in particular relates to a laser pointer indicating system and a method for positioning a laser pointer indicating cursor. Background technique [0002] Projectors are used in teaching, conferences and other places, and laser pointers are used for instructions. In order to increase the sense of experience, the camera can be used to locate the cursor position, and a laser pointer mouse has been developed. This laser pointer is equipped with left and right buttons and a scroll wheel like a mouse. With the middle button function, the presenter can control the computer without using a computer mouse. [0003] Conventional laser pointers include red laser and blue laser, which are cheap and only have the function of indicating and turning pages of PPT, but do not have the search menu of the mouse, the click of any file and the selection function of the drop-down menu. ...

AI Technical Summary

Problems solved by technology

The laser pointer pointing system provided by the embodiment of the present invention solves the problems of laser pointer cost, power consumption, and inaccurate positioning through the laser coding method and the processor demodulation method, eliminating the need for a wireless module

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