Optical mouse and method for preventing abnormal operation...

Details Optical mouse and method for preventing abnormal operation... Optical mouse and method for preventing abnormal operation...

2007-06-12

2007-06-12

Liang, Regina (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

C250S221000

Reexamination Certificate

active

10740214

ABSTRACT:
Disclosed is an optical mouse and method for preventing abnormal operation of the same. The method comprises the steps of (a) when a shutter-on time of an image sensor is continuously increased or decreased, obtaining a plurality of frames for the shutter-on time, and (b) calculating and outputting a movement value of the optical mouse using one frame obtaining a surface image with the highest accuracy from among the plurality of frames obtained in the step (a). Thus, by sensing the time when the optical mouse passes through an interface having an obvious difference in brightness and preventing the wrong movement value from being outputted, it is possible to prevent the abnormal operation of the optical mouse.

REFERENCES:
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patent: 6674475 (2004-01-01), Anderson
patent: 6753851 (2004-06-01), Choi et al.
patent: 6797937 (2004-09-01), Norskog et al.
patent: 2004/0095323 (2004-05-01), Ahn
patent: 2004/0099798 (2004-05-01), Kwak
patent: 2004/0135825 (2004-07-01), Brosnan
patent: 2005/0161582 (2005-07-01), Lee et al.

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