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Reflection type light power regulating system of laser mouse and method

A technology for adjusting the system and optical power, applied in the input/output process of data processing, instruments, electrical digital data processing, etc.

Inactive Publication Date: 2009-12-02
SUNPLUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the aforementioned method needs to purchase a large number of optical meters to complete the optical power adjustment when the laser mouse is mass-produced.
It can be seen that there is still room for improvement in the reflective optical power adjustment system and method of the existing laser mouse

Method used

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  • Reflection type light power regulating system of laser mouse and method
  • Reflection type light power regulating system of laser mouse and method
  • Reflection type light power regulating system of laser mouse and method

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Embodiment Construction

[0027] image 3 It is a block diagram of reflective optical power adjustment of the laser mouse of the present invention, including a laser light source 310 , an image sensing device 320 , a control device 330 and a current control device 340 .

[0028] The laser light source 310 provides laser light for the laser mouse. The laser light source 310 is a laser diode or a surface laser light source (vertical cavity surface emitting laser, VCSEL).

[0029] The image sensing device 320 is used for receiving the reflected light of the laser light source 310 to generate a sensing image, and analyzing the sensing image to generate sensing parameters of the sensing image. Wherein, the sensing parameters include a pixel sum (Pixel Sum) parameter and a shutter (Shutter) parameter. The image sensing device 320 is a Complementary Metal Oxide Semiconductor (CMOS) image sensing device or a Charge-Coupled Device (CCD).

[0030] The control device 330 is connected to the image sensing devic...

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PUM

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Abstract

The invention relates to a reflective optical power adjustment system and method of a laser mouse. The system includes a laser light source, an image sensing device, a control device and a current control device. The laser light source provides laser illumination of the laser mouse. The image sensing device is used to receive the reflected light of the laser light source to generate a sensing image, and analyze the sensing image to generate sensing parameters of the sensing image. The control device is connected to the image sensing device to read sensing parameters and compare the sensing parameters with preset parameters to generate a light source current control signal. The current control device is connected to the control device and the light source, and adjusts the current flowing through the light source according to the light source current control signal.

Description

technical field [0001] The invention relates to the technical field of laser power adjustment, in particular to a reflective optical power adjustment system and method for a laser mouse. Background technique [0002] Due to the rapid advancement of semiconductor technology, the functions of personal computers have become increasingly enhanced. Taking the mouse of a personal computer as an example, the original wheel mouse is gradually replaced by an optical mouse. Recently, the laser mouse has been gradually favored by users due to its better resolution and positioning functions. [0003] Since the laser optical power directly affects the moving performance of the laser mouse, the laser mouse usually needs to be adjusted in optical power to adjust its performance to the optimum state and comply with relevant safety regulations. In the prior art, an optical meter is used to read out the optical power value of the laser mouse, and then adjust the intensity of the optical pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/033G06F3/038G06F3/0354
Inventor 林育民
Owner SUNPLUS TECH CO LTD