Pressure informed decimation strategies for input event processing
AssigneeTactual Labs Co.
InventorsDaniel Wigdor, Clifton Forlines
Life of this patent
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Abstract
In an embodiment, a touch sensitive device includes touch interface having rows and columns and a signal generator for generating unique orthogonal signals on a plurality of the rows, respectively. A touch processor identifies touch on the touch interface by processing touch signals present on the columns, and outputting a stream of touch events. A decimator receives the stream of touch events including information as to a pressure of the touch event or the contact area of the touch event, selectively identifies one or more of the touch events in the stream, and outputs a modified stream of touch events for use by the touch sensitive device.
Claims20
A method for reducing the number of input events processed in a device, the device comprising at least one transmitter, at least two receivers and a sensor to periodically measure a coupling between the at least one transmitter and at least one of the at least two receivers, the sensor being adapted to periodically output a stream of input events for processing by the device, the method comprising:
- receiving a plurality of the input events from the stream of input events periodically output by the sensor;
- deriving pressure information from the plurality of the input events based on a pressure proxy in each of the plurality of input events;
- selectively identifying at least one of the plurality of input events based on the pressure information derived therefrom, and
- outputting a modified stream of events for use by the device, wherein the modified output stream does not include the selectively identified at least one of the plurality of input events.
A system for reducing the number of input events processed in a device, the device comprising at least one transmitter, at least two receivers and a sensor to periodically measure a coupling between the at least one transmitter and at least one of the at least two receivers, the sensor being adapted to periodically output a stream of input events for processing by the device, the system comprising:
- receiver configured to receive a plurality of the input events from the stream of input events periodically output by the sensor;
- processor adapted to:
- derive pressure information from the plurality of the input events based on a pressure proxy in each of the plurality of input events;
- selectively identify at least one of the plurality of input events based on the pressure information derived therefrom, and
- output a modified stream of events for use by the device, wherein the modified output stream does not include the selectively at least one of the plurality of identified input events.
Dependencies are inferred from the claim text.