Pointing device utilizing a photodetector array
First Claim
Patent Images
1. A cursor pointing device for controlling the position of a cursor on a display comprising:
- a ball having thereon a fixed irregular pattern of areas which appear light and dark when illuminated by substantially monochromatic radiation;
source means for illuminating a portion of said ball with said substantially monochromatic radiation;
sensor means responsive to said substantially monochromatic radiation reflected from the ball and impinging on the sensor for creating an output; and
processing means responsive to the output from the sensor means for generating a cursor control output.
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Accused Products
Abstract
A cursor control device for personal computers and workstations includes various embodiments, some of which include a patterned ball and some of which rely on other patterned surfaces, which recognizes changes in the position of the pattern relative to a sensor having an array of photosensitive elements. Circuitry associated with the sensor determines movement of the pattern across the array, and translates that movement into conventional cursor control signals supplied to a host system.
166 Citations
34 Claims
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1. A cursor pointing device for controlling the position of a cursor on a display comprising:
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a ball having thereon a fixed irregular pattern of areas which appear light and dark when illuminated by substantially monochromatic radiation; source means for illuminating a portion of said ball with said substantially monochromatic radiation; sensor means responsive to said substantially monochromatic radiation reflected from the ball and impinging on the sensor for creating an output; and processing means responsive to the output from the sensor means for generating a cursor control output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A trackball pointing device for controlling the position of a cursor on a display comprising:
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a ball, for manipulation by the palm or fingers, having thereon a fixed irregular pattern of areas which appear light and dark when illuminated by substantially monochromatic radiation; source means for illuminating a portion of the ball with said substantially monochromatic radiation; sensor means responsive to the radiation reflected from the ball, for receiving said reflected radiation and for creating an output in response to said received radiation, and processing means responsive to the output from the sensor means for generating a cursor control output. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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27. An electronic mouse for controlling the position of a cursor on a display comprising:
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a ball having thereon a fixed irregular pattern of areas which appear light and dark when illuminated by substantially monochromatic radiation; source means for illuminating a portion of the ball with said substantially monochromatic radiation; sensor means responsive to the radiation reflected from the ball, for receiving said reflected radiation and for creating an output in response to said received radiation, and processing means responsive to the output from the sensor means for generating a cursor control output. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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Specification