Wireless laser pen interaction system based on field programmable gate array (FPGA)

Abstract

The invention relates to a wireless laser pen interaction system based on a field programmable gate array (FPGA), belonging to the field of embedded wireless control technology; the wireless laser pen interaction system consists of a transmitter and a receiving controller, wherein the transmitter comprises a key coding module, a controllable laser head module, a wireless transmitting module and a power module; and the receiving controller comprises a main processor module, a camera acquisition module, a wireless receiving module, a video graphics array (VGA) interface module, a memory module, a module for converting a serial port into a universal serial bus (USB) interface, and a power module. Rich interactive functions are provided by the wireless laser pen interaction system, and an external device is integrated into two parts including a transmitting end and a receiving end with wireless communication, so that installation and arrangement are very conveniently carried out, and the wireless laser pen interaction system is widely applied to occasions such as a meeting, product demonstration, educational training and the like.

Description

technical field [0001] The invention relates to a device in the technical field of embedded wireless control, in particular to an FPGA-based wireless laser pointer interactive system. Background technique [0002] In recent years, with the popularization of multimedia technology, projectors and computers have replaced blackboards and chalks and become the mainstream teaching equipment. However, traditional computer-controlled equipment keyboards and mice are designed for personal computers and need to be operated in front of the computer. This leads to the fact that teachers often need to stay in front of the computer when conducting multimedia teaching, and explain while operating the computer. Where it is emphasized, it is necessary to stand up and point from time to time. The convenient multimedia demonstration equipment was originally provided, but the teacher's rich classroom language is bound. [0003] The introduction of wirelessly controlled laser pointers has solve...

AI Technical Summary

Problems solved by technology

For example: in Chinese patent 03270412, a laser pointer with a page-turning button and a wireless transceiver device is disclosed, which can complete the page-turning control of computer slides, but the function is relatively single, and other laser pointers cannot be realized. The interactive function of the pen; in Chinese patent 200810035544.6, a method for identifying the track of the light point of the laser pen is disclosed, which can successfully identify the track information of the light point and form the display effect of various shapes, letters, numbers, etc., but the implementation requires There are many devices, and installation and deployment are inconvenient; in Chinese patent 200810243107.3, an infrared laser pointer remote finger virtual touch system is disclosed, which can distinguish light point indication, light point movement, and click according to the time length and frequency of infrared laser light. different operations, and control the computer system to generate light spots on the corresponding positions of the display screen, and complete the corresponding operations. The same implementation requires more equipment, and the camera alone requires two

By comparing the existing patents and documents, it is found that generally only the laser pointer with slide page turning function only needs two parts, the transmitting end and the receiving end, which is easy to install and deploy, but the function is relatively single; while the laser pointer with slightly more functions is interactive. The system often requires more equipment. For example, a laser pointer system with an image processing module must at least include a camera device, resulting in more cables and inconvenient installation and deployment.

At present, the development direction of electronic technology is light and portable, but the existing patented technology has not yet realized a laser pointer interactive system with rich functions and easy installation and deployment.

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