Cursor pointing device utilizing a photodetector array with target ball having randomly distributed speckles

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5288993
SERIAL NO

07956907

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A cursor control device for personal computers and workstations includes a randomly speckled ball illuminated with diffuse lighting. An image of at least a portion of the illuminated area of the speckled ball is focused by an optical element such as a diffractive optical element onto a photosensitive array. Logic associated with the photosensitive array determines movement of the ball across the array, and translates that movement into conventional cursor control signals supplied to a host system.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
LOGITECH EUROPE S.A.ROMANEL-SUR-MORGES672

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arreguit, Javier Pully, CH 7 522
Bidiville, Marc Pully, CH 36 1010
Buczek, Harthmuth Marin-Epagnier, CH 8 496
Bussien, Aldo Aclens, CH 4 225
Droz-Dit-Busset, Fabien Neuchatel, CH 1 95
Steenis, Bernard Bevaix, CH 1 95
Van, Shaik Floris A Colombier, CH 6 490

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (6)
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KYE SYSTEMS CORP. (1)
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SONY CORPORATION (1)
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LOGITECH EUROPE S.A. (27)
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HAMAMATSU PHOTONICS K.K. (2)
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Cursor Controls Limited (2)
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INGENION, LLC (1)
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* Cited By Examiner