Pen like computer pointing device

Details Pen like computer pointing device Pen like computer pointing device

1998-04-27

2000-11-21

Wu, Xiao

Computer graphics processing and selective visual display system

Display peripheral interface input device

Stylus

345182, 345180, G09G 500

Patent

active

061510157

ABSTRACT:
A pen like computer pointing device images as an array of pixels the spatial features of generally any micro textured or micro detailed work surface below the tip of the pen. The photo detector responses are digitized and stored as a frame into memory. Motion produces successive frames of translated patterns of pixel information, which are compared by autocorrelation to ascertain the direction and amount of movement. A contact sensor senses when the tip of the pointing device is in contact with the work surface. Buttons are included on the body of the pointing device that allow it to function in place of a computer mouse device.

REFERENCES:
patent: 4794384 (1988-12-01), Jackson
patent: 5414227 (1995-05-01), Schubert et al.
patent: 5477012 (1995-12-01), Sekendur
patent: 5644139 (1997-07-01), Allen et al.

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