Optical multi-point touch screen device and method applicable to vibration and damp environment

A multi-touch screen, wet environment technology, applied in the input/output process of data processing, instruments, electrical and digital data processing, etc. Destruction and other problems to achieve the effect of removing ghost points
CN102289326BInactive Publication Date: 2014-05-14NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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Patent Information

Authority / Receiving Office
CN Ā· China
Patent Type
Patents(China)
Current Assignee / Owner
NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
Publication Date
2014-05-14
Estimated Expiration
Not applicable Ā· inactive patent

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Abstract

The invention relates to an optical multi-point touch screen device and a method applicable to vibration and damp environment. The device comprises a screen, a touch screen frame and trapezoidal box-shaped components, wherein the touch screen frame is arranged on the outer edges of the screen, the trapezoidal box-shaped components are arranged at four corners of the screen frame, a linear array image sensor plate and a convex cylindrical lens are arranged in the components, and the sensor plate is connected with a driving plate through a connector. The optical multi-point touch screen device and the method have the advantages that the device is applicable to the modification of a plane large-screen display into a multi-point touch display, the problems of durability, light transmission rate and screen size limitation of a resistance screen and a capacitance screen are solved, the multi-point identification positioning method can be used for obtaining the center coordinates and the occupied regions of each touch point, in addition, ghost points can be effectively eliminated, the imaging characteristics of the convex cylindrical lens structure are adopted so that certain tolerance is realized on the vibration, in addition, the installation precision requirement on the structure is low, the imaging distortion is solved by adopting the optical calibration, the problems of high center precision and low peripheral precision of the screen of the triangular positioning method are avoided, a relative humidity sensor and electric heating glass are adopted, and the problem of optical touch screen failure caused by condensation in damp environment is avoided.
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Description

technical field

[0001] The present invention relates to the field of human-computer interaction technology and multi-point touch screen, in particular to a new type of man-machine that can identify and track multiple touch points and can identify and track multiple touch points, which is suitable for harsh environments such as vibration, humidity and condensation. An interactive device and a related positioning method. Background technique

[0002] Currently, touch screen technology has been widely used in various electronic devices. Several multi-touch screen technologies have also emerged in recent years. With the development of technologies such as large-screen display and three-dimensional electronic sand table on military computer platforms, the requirements for new human-computer interaction equipment are getting higher and higher. Traditional interactive devices such as trackballs and keyboards can no longer meet the control requirements of the three-dimensional ele...

Claims

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