High resolution scrolling apparatus
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United States of America Patent
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Aug 15, 2006
Grant Date -
Aug 5, 2004
app pub date -
Feb 5, 2003
filing date -
Feb 5, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A scrolling apparatus is disclosed that includes a rotatable scroll wheel and a sensor assembly coupled mechanically. The sensor assembly has an encoder wheel that rotates in response to rotation of the scroll wheel. The rotational axis of the encoder wheel is axially displaced from the rotational axis of scroll wheel, and concepts related to gearing may be utilized to increase the angular velocity of the encoder wheel in relation to the scroll wheel. In addition, the diameter of the encoder wheel may be greater than the diameter of a conventional encoder wheel. The gearing concepts and the differences in diameter of the scroll wheel and encoder wheel may be utilized alone or in combination to provide the scrolling apparatus with relatively high resolution.
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