TOUCH SENSITIVE DEVICE ADAPTIVE SCALING
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United States of America Patent
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Issued Date -
Jan 3, 2013
app pub date -
Aug 4, 2011
filing date -
Jul 1, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method for performing adaptive scaling in a touch sensitive device including a touch pad is provided. The method includes obtaining a trajectory of touch positions from the touch pad; setting a first scaling factor; comparing an acceleration factor to a deceleration factor, and: setting a second scaling factor to the acceleration factor if the first scaling factor is lower than the acceleration factor when the acceleration factor is greater than the deceleration factor; setting the second scaling factor to the deceleration factor if the first scaling factor is greater than the deceleration factor when the acceleration factor is lower than or equal to the deceleration factor; and updating the trajectory with a new touch position provided by the touch pad and a scaling factor set to the second scaling factor. A touch sensitive device coupled to a display for use with the above method is also provided.
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