Optical input device
First Claim
Patent Images
1. An optical input device, comprising:
- a case;
a floating board arranged to be moved on the case and having a top surface facing outside the case and a bottom surface facing inside the case;
a light source that projects a light beam toward the bottom surface of the floating board, a sensor arranged to detect a light beam reflected from the floating board;
whereby the movement of the floating board will cause a corresponding cursor-moving signal on a display.
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Abstract
An optical input device includes a floating board arranged to be moved by the user'"'"'s finger and confined in an opening on the case of the input device. A sensor located within the case will detect the movement of the floating board as to generate a corresponding cursor-moving signal to a computer system. The present invention may be a closed system to eliminate contamination by the grease, dust from the ambient. Further, the present invention can avoid the harm to a user'"'"'s hand or shoulder while moving merely by a finger.
20 Citations
12 Claims
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1. An optical input device, comprising:
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a case;
a floating board arranged to be moved on the case and having a top surface facing outside the case and a bottom surface facing inside the case;
a light source that projects a light beam toward the bottom surface of the floating board, a sensor arranged to detect a light beam reflected from the floating board;
whereby the movement of the floating board will cause a corresponding cursor-moving signal on a display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification