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Click judging method of optical indication device

A pointing device, an optical technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc., can solve the problem of not being able to accurately judge the user's operation, etc., to achieve effective human-computer interaction and avoid misjudgment. Effect

Inactive Publication Date: 2010-08-18
APEXONE MICROELECTRONICS SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a method applied to an optical pointing device, which can effectively determine the click action through optical means, so as to solve the defect that the prior art cannot accurately determine the user's operation

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  • Click judging method of optical indication device
  • Click judging method of optical indication device
  • Click judging method of optical indication device

Examples

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Embodiment Construction

[0055] The method for judging the click of an optical pointing device according to the present invention is applied to an optical finger navigation device, which is usually applied to portable electronic devices such as mobile phones, to replace the currently used direction keys, joysticks, touch pads and Structures such as a trackball are used to control the movement of the cursor on the display screen of the portable electronic device to realize functions such as moving pages or selecting menus. In actual implementation, it usually adopts an optical method to control the movement of the cursor and click. The optical indicating device usually includes a photosensitive detector array (or optical image sensor), a data processing unit and corresponding optical lens, etc., and in use, the photosensitive detector array usually cooperates with the optical lens to continuously collect data at a certain rate. There are multiple frames of images of the user's fingers, and then the dat...

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Abstract

The invention discloses a click judging method of an optical indication device, which is used for judging a click event in an optical mode. The method comprises the following steps of: integrally processing a set frame number of images in one step length; calculating the difference value of the maximum pixel value and the minimum pixel value of each frame of image in each step length, summing the difference values larger than a set pressing threshold value; counting the number of images, the difference values of the maximum pixel value and the minimum pixel value of which is larger than the pressing threshold value in each step length by utilizing a pressing counter; then, calculating the value of a lifting counter and the value of an after-lifting pre-pressing counter according to the relation of averages of the summed difference values of the former step and the next step larger than the set pressing threshold value; and judging a pressing state or a lifting state according to the value of the pressing counter and the frame number of images contained in each step length so as to more accurately reflect the operation condition of a user and benefit the effective human-computer interaction.

Description

【Technical field】 [0001] The invention relates to an optical pointing device, in particular to a method for realizing click judgment in an optical way applied to the optical pointing device. 【Background technique】 [0002] The realization of the clicking function of existing optical pointing devices or optical navigation devices (such as photoelectric mouse or photoelectric trackball, etc.) is mostly through the mode of mechanism, that is, a button (such as the left and right buttons of photoelectric mouse) is separately set on the optical pointing device. etc.), the user presses the button to realize the click function, but this structure cannot be integrated on portable electronic devices (such as mobile phones, music players, etc.) due to its large size, or it can be integrated on such devices, However, due to the complex structure, it is not conducive to further reducing the size of such devices. In this regard, the industry has also proposed a device that uses fingers ...

Claims

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Application Information

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IPC IPC(8): G06F3/033G06F3/0354
Inventor 邵菊花刘建刘红
Owner APEXONE MICROELECTRONICS SHANGHAI
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