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Frameless optical touch device and image processing method therefor

An optical touch and image processing technology, applied in electrical digital data processing, data processing input/output process, instruments, etc., can solve the difficulty of assembling optical touch devices 1, 1', unable to perform touch position detection, Problems such as increasing the manufacturing cost of the optical touch devices 1, 1'

Active Publication Date: 2016-03-16
WISTRON CORP
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  • Abstract
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Problems solved by technology

[0006] However, the common point of the above-mentioned prior art is that the frame 16 is used. Without the frame 16, the detection of the touch position cannot be performed at all.
However, setting the frame 16 will not only cause difficulties in assembling the optical touch devices 1, 1', but also increase the manufacturing cost of the optical touch devices 1, 1'

Method used

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  • Frameless optical touch device and image processing method therefor
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  • Frameless optical touch device and image processing method therefor

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Embodiment Construction

[0031] see Figure 3 to Figure 6 , image 3 is a schematic diagram of a frameless optical touch device 4 according to an embodiment of the present invention, Figure 4 for image 3 When there is no touch object in the sensing area 400, the brightness distribution diagram of the first image generated by the image sensing unit 42, Figure 5 Enter for touch object 6 image 3 A schematic diagram of the sensing region 400 in, Figure 6 for Figure 5 When there is the touch object 6 in the sensing area 400 in the luminance distribution diagram of the second image generated by the image sensing unit 42 .

[0032] Such as image 3 As shown, the frameless optical touch device 4 includes an indication plane 40 , two image sensing units 42 , two light emitting units 44 and a processing unit 46 . In practical applications, the indicating plane 40 can be a touch panel for users to perform touch operations. A sensing area 400 is defined on the indicating plane 40 . There is no fram...

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Abstract

A frameless optical touch device includes an indication plane, an image sensing unit, a light emitting unit and a processing unit. A sensing area is defined on the indicating plane, and there is no frame around the indicating plane, so that a first light from the environment where the indicating plane is located can enter the sensing area through the surroundings of the indicating plane. The light emitting unit is used for emitting a second light into the sensing area. When there is no touch object in the sensing area, the image sensing unit senses the first light and the second light in the sensing area to generate a first image. When a touch object enters the sensing area, the image sensing unit senses the first light and the second light in the sensing area to generate a second image. The processing unit compares the brightness of the first image with the brightness of the second image to obtain the position covered by the touch object in the second image.

Description

technical field [0001] The present invention relates to an optical touch device, in particular to a frameless optical touch device and an image processing method for the frameless optical touch device. Background technique [0002] Since current consumer electronic products are all designed to be light, thin, short, and small, there is no space on the product to accommodate traditional input tools such as a mouse and a keyboard. With the advancement of touch device technology, various consumer electronic products, such as monitors, all-in-one machines (AllinOne), mobile phones, personal digital assistants (Personal Digital Assistant, PDA) and other products have widely used touch devices as their data. input tool. At present, compared with other touch technologies, such as resistive, capacitive, ultrasonic or projected image, optical touch devices have the advantages of lower cost and easier implementation. [0003] A known optical touch device optically senses a position ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/042
CPCG06F3/0416G06F3/0428
Inventor 陈裕彦吕帼闲苏上钦张洵豪
Owner WISTRON CORP
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