Optical mouse and control method thereof
First Claim
1. An optical pointing device comprising:
- an illumination unit for illuminating light on a working surface, and generating light in a predetermined code in response to a code signal;
a control unit for detecting an image on the working surface to calculate a movement value, outputting movement information in response to an input signal inputted from the outside and the calculated movement value, intermittently outputting a code generation signal, and turning off the illumination unit when the optical pointing device is separated from the working surface in response to a determination signal; and
a determination unit for outputting the code signal in response to the code generation signal, detecting the light in the predetermined code to thus determine whether or not the optical pointing device is separated from the working surface, and outputting the determination signal depending on the determination result.
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0 Petitions
Accused Products
Abstract
An optical pointing device and a control method thereof are provided. The optical pointing device includes: an illumination unit for illuminating light on a working surface, and generating light in a predetermined code in response to a code signal; a control unit for detecting an image on the working surface to calculate a movement value, outputting movement information in response to an input signal inputted from the outside and the calculated movement value, intermittently outputting a code generation signal, and turning off the illumination unit when the optical pointing device is separated from the working surface in response to a determination signal; and a determination unit for outputting the code signal in response to the code generation signal, detecting light in the predetermined code to thus determine whether or not the optical pointing device is separated from the working surface, and outputting the determination signal depending on the determination result. Therefore, a glaring phenomenon generated when the optical pointing device is turned upside down can be prevented, and unnecessary power consumption can also be prevented.
16 Citations
19 Claims
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1. An optical pointing device comprising:
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an illumination unit for illuminating light on a working surface, and generating light in a predetermined code in response to a code signal;
a control unit for detecting an image on the working surface to calculate a movement value, outputting movement information in response to an input signal inputted from the outside and the calculated movement value, intermittently outputting a code generation signal, and turning off the illumination unit when the optical pointing device is separated from the working surface in response to a determination signal; and
a determination unit for outputting the code signal in response to the code generation signal, detecting the light in the predetermined code to thus determine whether or not the optical pointing device is separated from the working surface, and outputting the determination signal depending on the determination result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An optical pointing device comprising:
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an illumination unit for illuminating light on a working surface;
a detection unit for determining whether or not the optical pointing device is on the working surface to thus output a detection signal; and
a control unit for detecting an image on the working surface to calculate a movement value, outputting movement information in response to an input signal inputted from the outside and the calculated movement value, and turning off the illumination unit when the optical pointing device is separated from the working surface in response to the detection signal. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of controlling an optical pointing device, comprising:
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a code generation step that turns on or off an illumination unit in response to a code signal;
a determination step that detects light output from the illumination unit to analyze a code included in the light, to thus determine whether or not the optical pointing device is separated from the working surface and outputs a determination signal depending on the determination result; and
a glaring prevention step that turns off the illumination unit when the optical pointing device is separated from the working surface in response to the determination signal. - View Dependent Claims (16, 17, 18, 19)
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Specification