DEVICE AND METHOD FOR OPERATING AT MITIGATED SENSITIVITY IN A TOUCH SENSITIVE DEVICE
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United States of America Patent
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Issued Date -
Oct 22, 2015
app pub date -
Jan 16, 2015
filing date -
Jan 16, 2014
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Abstract
In an embodiment, a self-adapting device and method for lowering the power used in connection with operation of a touch sensor in a touch sensitive device is disclosed. The touch sensor includes a plurality of rows and a plurality of columns, a signal generator for generating signals on the rows and a touch signal processor for detecting touch events from touch signals present on the columns. At least two power states are defined for a touch sensor, wherein at least one of the at least two power states is associated with a first operating sensitivity of the touch sensor and at least one other of the power states is associated with mitigated operating sensitivity of the touch sensor. Signals associated with the mitigated operating sensitivity power state are generated on at least some of the rows. A touch event is detected by processing at least one touch signal on at least one column, and in response thereto, generating signals associated with the first operating sensitivity power state on at least some of the rows.
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