Compact cursor pointing device utilizing photodetector array
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United States of America Patent
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Jul 4, 2000
Issued Date -
N/A
app pub date -
May 29, 1998
filing date -
Oct 5, 1992
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Abstract
A compact pointing device generally includes a ball, a light source, and a sensor. The ball includes an outer layer, a reflective inner core and a transparent layer disposed between the outer layer and the inner core. Disposed in the outer layer is a pattern of areas which appear transparent and opaque when illuminated by light generated by the light source. During operation, the light generated by the light source travels through a portion of the outer layer and the transparent layer before illuminating a portion of the inner core. The light is reflected back from the inner core along a path which extends through a portion of the transparent layer and a portion of the outer layer. As the light passes through the outer layer, a 'shadow' of the pattern is cast onto the sensor. The sensor responds to movements of the shadow of the pattern (e.g., when a user manipulates the ball) by generating an output which is processed to provide a cursor control output.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- LOGITECH EUROPE S.A.
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bidiville, Marc A | Pully, CH | 11 | 385 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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