User input utilizing dual line scanner apparatus and method
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United States of America Patent
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Aug 19, 2014
Grant Date -
Dec 19, 2013
app pub date -
Aug 20, 2013
filing date -
Jan 26, 2011
priority date (Note) -
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Abstract
A user input method and apparatus may comprise a two line object imaging sensor having a primary line scan-sensor providing a primary line scan-sensor output and a secondary line scan-sensor providing a secondary line scan-sensor output, representing pixels in a current primary scan row and a current secondary scan row, and adapted to scan an object; storing for each scan time each current primary line scan-sensor output and each current secondary line scan-sensor output and a correlation unit correlating at least one of the current representations of pixels in a primary line sensor output with stored representations and the current representations of pixels in a secondary line sensor output with stored representations and, the correlation unit providing as an output a motion indicator.
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