Touch display screen frame and system based on infrared videography, and its computing method

Abstract

An embodiment of the invention discloses a touch display screen frame, system and calculating method based on infrared image pick-up; the system comprises a computer, a touch display screen, and an infrared image pick-up device and a control circuit board installed on the touch display screen frame, wherein the infrared image pick-up device comprises two high-resolution infrared cameras respectively at two ipsilateral angles of one rim of the touch display screen, infrared transmitting tubes installed at the tops or sides of the infrared cameras, and infrared refractive strips installed at the inner sides of the other three rims of the touch display screen; the four rims of the touch display screen are movably connected, and can be disassembled or folded from the touch display screen; the touch display screen frame can be independently and flexible configured, and the touch system can improve system resolution factor and computational accuracy of touch recognition point coordinates.

Description

technical field [0001] The invention relates to the field of computer input, in particular to a frame of a touch display screen based on infrared photography, a system and a method for improving the accuracy of calculating touch recognition points. Background technique [0002] At present, touch screen systems can be divided into five basic categories: vector pressure sensing technology touch screens, resistive technology touch screens, capacitive technology touch screens, infrared technology touch screens, and surface acoustic wave technology touch screens. The traditional infrared technology touch screen is composed of an infrared transmitter receiver and an infrared reflective strip installed on the outer frame of the screen. The system emits infrared light, and after being reflected by a special material, the real-time image on the infrared reflective material is imaged on the CMOS sensor through a camera. , when any touch object can block the infrared reflection on the ...

AI Technical Summary

Problems solved by technology

[0003] The existing touch system infrared camera based on infrared camera has a large volume and low pixels, and is easily disturbed by visible light and dust; moreover, the frame with the infrared transmitter receiver or the infrared reflective strip and the touch screen of the display are fixedly injection molded together and cannot be separated. The display is produced and sold as a whole, and its frame structure is complicated, it is inconvenient to install and adjust, and it cannot be disassembled, replaced, and repaired for one of the bad frames

In addition, the data processing and sampling speed of the existing touch system based on infrared camera is slow, and the coordinate calculation of the touch point is inaccurate. The coordinates of the touch recognition point of 2 mm affect the accuracy of the touch operation, which has a lot to do with the algorithm for improving the accuracy of the touch recognition point

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