WIDE DYNAMIC RANGE CAPACITIVE SENSING
First Claim
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1. A method for determining an object sensing mode of a touch sensor panel, comprising:
- at an electronic device with one or more processors and memory,operating the touch sensor panel in a first object sensing mode having a first resolution,if a first touch or proximity event is detected in the first object sensing mode, switching the touch sensor panel to operate in a second object sensing mode having a second resolution, andif no second touch or proximity event is detected in the second object sensing mode, switching the touch sensor panel back to operate in the first object sensing mode.
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Abstract
A touch sensor panel configured to detect objects touching the panel as well as objects that are at a varying proximity to the touch sensor panel. The touch sensor panel includes circuitry that can configure the panel in a mutual capacitance (near field) architecture or a self-capacitance (far field and super far field) architecture. The touch sensor panel can also include circuitry that works to minimize an effect that a parasitic capacitance can have on the ability of the touch sensor panel to reliably detect touch and proximity events.
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Citations
24 Claims
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1. A method for determining an object sensing mode of a touch sensor panel, comprising:
at an electronic device with one or more processors and memory, operating the touch sensor panel in a first object sensing mode having a first resolution, if a first touch or proximity event is detected in the first object sensing mode, switching the touch sensor panel to operate in a second object sensing mode having a second resolution, and if no second touch or proximity event is detected in the second object sensing mode, switching the touch sensor panel back to operate in the first object sensing mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for determining an object sensing mode of a touch sensor panel, comprising:
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switching circuitry configured to switch the touch sensor panel between a plurality of object sensing modes; and a processor communicatively coupled to the switching circuitry and capable of configuring the switching circuitry to operate the touch sensor panel in a first object sensing mode having a first resolution, if a first touch or proximity event is detected in the first object sensing mode, configuring the switching circuit to operate the touch sensor panel in a second object sensing mode having a second resolution, and if no second touch or proximity event is detected in the second object sensing mode, configuring the switching circuitry to operate the touch sensor panel in the first object sensing mode. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A non-transitory computer readable storage medium having stored thereon a set of instructions for determining an object sensing mode of a touch sensor panel that when executed by a processor causes the processor to:
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operate the touch sensor panel in a first object sensing mode having a first resolution; if a first touch or proximity event is detected in the first object sensing mode, switch the touch sensor panel to operate in a second object sensing mode having a second resolution; and if no second touch or proximity event is detected in the second object sensing mode, switch the touch sensor panel back to operate in the first object sensing mode. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification