Apparatus and method for inputing data
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United States of America Patent
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-
Aug 28, 2001
Issued Date -
N/A
app pub date -
Jan 26, 1998
filing date -
Nov 1, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An input device for detecting input with respect to a reference plane. The input device includes a light sensor positioned to sense light at an acute angle with respect to the reference plane and for generating a signal indicative of sensed light, and a circuit responsive to said light sensor for determining a position of an object with respect to the reference plane.
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