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Touch panel based on infrared pick-up and its positioning detection method

An infrared camera and infrared camera technology, which are applied in the fields of optical filters for photography, image communication, color TV components, etc., can solve the problems of easy damage and low resolution, and achieve low cost, high resolution, principle simple effect

Inactive Publication Date: 2008-03-19
FUDAN UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

Its main advantages are low price, easy installation, and fast response, but the resolution is low and it is easy to damage

Method used

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  • Touch panel based on infrared pick-up and its positioning detection method
  • Touch panel based on infrared pick-up and its positioning detection method
  • Touch panel based on infrared pick-up and its positioning detection method

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Embodiment Construction

[0026] The touch screen system designed by the present invention is shown in FIG. 1 . Composed of an image acquisition module 1, a control circuit board 2 and a computer 6, the image acquisition module 1 is an image display screen, cameras 3 are respectively arranged at two corners of the same side of the display screen, and infrared emission tubes 4 are arranged on both sides of each camera 3 to display The other three sides of the screen are provided with reflective strips 7 respectively.

[0027] The beam angles of the two infrared emitting tubes 4 placed on both sides of the infrared camera 3 are between 40° and 60°, so that the infrared rays emitted by the two infrared emitting tubes 4 can cover the entire screen and irradiate the diagonal reflective strips 7.

[0028] Infrared camera 3 adopts an ordinary 300,000-500,000-pixel digital camera, and an infrared filter is installed on the camera. The function of the infrared filter is to receive infrared light and filter out...

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PUM

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Abstract

The invention belongs to the technology field of computer multimedia, and in particular relates to an infrared-camera-based touch screen and the locating and detecting method. The invention consists of three parts, including an image collecting module, a control circuit board and a host. The image collecting module consists of an infrared transmitting tube and an infrared camera, and are arranged at two corners of upper side of the bonder of the display screen, and reflective strips surrounded at other three sides of the bonder of the display screen; the data collected by the infrared camera is processed and converted to the format of the USB data, and then submitted to the operating system by the control circuit board; through analyzing the received image data, the host can work out the location of the finger-touch-point, so as to control the mouse to move with the finger. The invention has simple structure and small size as well as low cost.

Description

technical field [0001] The invention belongs to the technical field of computer multimedia, and in particular relates to a touch screen based on infrared photography and a positioning detection method thereof for electronic computer multimedia technology. Background technique [0002] Along with increasing with each passing day of multimedia information inquiry, people use touch screen more and more. As the latest computer input device, the touch screen is currently the simplest, most convenient, natural and applicable to China's national conditions. The touch screen has many advantages such as ruggedness, fast response, space saving, and easy communication. With this technology, the user can operate the host computer only by lightly touching the icon or text on the computer display screen with his finger, thus making the human-computer interaction more straightforward. [0003] At present, touch screens are distinguished according to technical principles and can be divide...

Claims

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Application Information

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IPC IPC(8): G06F3/042H04N5/33G03B11/04
Inventor 陆起涌陈熙孙研王力超
Owner FUDAN UNIV
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