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US 8,797,287 B2Granted
Selective scan of touch-sensitive area for passive or active touch or proximity input
AssigneeAtmel Corporation
InventorsKishore Sundara-Rajan, Trond Jarle Pedersen, Shahrooz Shahparnia, Vemund Kval Bakken, John Stanley Dubery, Martin John Simmons
Life of this patent
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Abstract
In one embodiment, an apparatus comprises a touch sensor comprising a touch-sensitive area, and a touch-sensor controller coupled to the touch sensor. The touch-sensor controller is operable when executed to: select one or more regions associated with a stylus within the touch-sensitive area, and scan one or more electrodes within each region.
Claims16
An apparatus comprising:
- a touch sensor comprising a touch-sensitive area;
- and
- a touch-sensor controller coupled to the touch sensor and operable to:
- select a first region around a previously determined first location associated with a stylus within the touch-sensitive area;
- and
- scan two or more electrodes within the first region to determine a second location associated with the stylus within the touch-sensitive area, wherein a starting position of the scan and a direction of the scan are determined based on one or more first metrics, wherein the direction of the scan is opposite of a direction toward which the stylus is moving around the touch-sensitive area.
3 more elements
A method comprising:
- by a touch-sensor controller,
- selecting a first region around a previously determined first location associated with a stylus within a touch-sensitive area of a touch sensor coupled to the touch-sensor controller;
- and
- scanning two or more electrodes within the first region to determine a second location associated with the stylus within the touch-sensitive area, wherein a starting position of the scan and a direction of the scan are determined based on one or more first metrics, wherein the direction of the scan is opposite of a direction toward which the stylus is moving around the touch-sensitive area.
1 more element
One or more computer-readable non-transitory storage media embodying logic that is operable when executed to:
- select a first region around a previously determined first location associated with a stylus within the touch-sensitive area;
- and
- scan two or more electrodes within the first region to determine a second location associated with the stylus within the touch-sensitive area, wherein a starting position of the scan and a direction of the scan are determined based on one or more first metrics, wherein the direction of the scan is opposite of a direction toward which the stylus is moving around the touch-sensitive area.
Dependencies are inferred from the claim text.