Electronic device and method of detecting touches on a touch-sensitive display
AssigneeResearch In Motion Limited
InventorsAmit Pal SINGH, James Alexander ROBINSON, John Edward DOLSON, Jeffery John Paul DIPPEL, Michael Lorne PURDY
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Abstract
A method includes applying a first plurality of pulses to scanning electrodes during a first scan to detect touches on a touch-sensitive display, receiving an indication to scan in a reduced power condition, and when in the reduced power condition, applying a second plurality of pulses to scanning electrodes during a second scan to detect touches on the touch-sensitive display, wherein the second plurality of pulses comprises fewer pulses than the first plurality of pulses.
Claims17
A method comprising:
- applying a first plurality of pulses to scanning electrodes during a first scan to detect touches on a touch-sensitive display;
- receiving an indication to scan in a reduced power condition;
- when in the reduced power condition, applying a second plurality of pulses to scanning electrodes during a second scan to detect touches on the touch-sensitive display;
- wherein the second plurality of pulses comprises fewer pulses than the first plurality of pulses.
An electronic device comprising:
- a touch-sensitive display comprising:
- scanning electrodes;
- sense electrodes;
- and
- at least one controller coupled to the scanning electrodes and the sense electrodes and configured to:
- apply a first plurality of pulses to the scanning electrodes during a first scan to detect touches on the touch-sensitive display;
- receive an indication to scan in a reduced power condition;
- when in the reduced power condition, apply a second plurality of pulses to scanning electrodes during a second scan to detect touches on the touch-sensitive display, wherein the second plurality of pulses comprises fewer pulses than the first plurality of pulses.
A method comprising:
- scanning a touch-sensitive display at a first scanning rate to detect touches on the touch-sensitive display;
- scanning the touch-sensitive display at a second scanning rate that is less than the first scanning rate to detect touches in a reduced power condition;
- in response to detecting a touch when scanning at the second scanning rate, scanning the touch-sensitive display at a third scanning rate;
- wherein the third scanning rate is between the first scanning rate and the second scanning rate.
Dependencies are inferred from the claim text.