A CMOS motion detector system for pointing devices

A CMOS motion detector system for pointing devices

A motion detector system uses an array of 93 photodiodes integrated along with processing circuits to detect the motion of a printed random pattern on a ball used in a pointing device application. It is based on the detection and tracking of spot edges passing over a matrix of pixels during the peri...

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Veröffentlicht in:IEEE journal of solid-state circuits 1996-12, Vol.31 (12), p.1916-1921
Hauptverfasser: Arreguit, X., Van Schaik, F.A., Bauduin, F.V., Bidiville, M., Raeber, E.
Format: Artikel
Sprache:eng
Schlagworte:
Analog computers
Circuits
Detectors
Energy consumption
Motion detection
Motion estimation
Optical design
Optical devices
Optical sensors
Photodiodes
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Beschreibung
Zusammenfassung:A motion detector system uses an array of 93 photodiodes integrated along with processing circuits to detect the motion of a printed random pattern on a ball used in a pointing device application. It is based on the detection and tracking of spot edges passing over a matrix of pixels during the period between two light pulses. Motion in x and y directions is estimated by aggregating local information about moving edges over the photosensitive pixels. The 4.4/spl times/4.3 mm/sup 2/ chip detects the ball motion from 0 to 11.8 in/s with a resolution higher than 800 dpi over a 100-2000 mW/m/sup 2/ light-intensity range.
ISSN:0018-9200
1558-173X
DOI:10.1109/4.545813