Apparatus for controlling a screen pointer with a frame rate based on velocity
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United States of America Patent
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Feb 7, 2006
Grant Date -
Jul 8, 2004
app pub date -
Jan 7, 2003
filing date -
Jan 7, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for controlling the position of a screen pointer for an electronic device having a display screen includes a light source for illuminating an imaging surface, thereby generating reflected images. An optical motion sensor generates digital images from the reflected images at a first frame rate. The motion sensor is configured to generate movement data based on the digital images. The movement data is indicative of relative motion between the imaging surface and the apparatus. The motion sensor is configured to modify the first frame rate to one of a plurality of alternate frame rates based on a current relative velocity between the imaging surface and the apparatus.
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