Sensor-based ESD detection
First Claim
1. A touch sensitive device capable of detecting the occurrence of an ESD event, the device comprising:
- a touch sensor panel having a plurality of touch sensors configured to detect one or more touch or proximity events occurring on the touch sensitive device;
one or more ESD sensors distinct from the plurality of touch sensors configured to detect an ESD event on the touch sensitive device independently of the plurality of touch sensors; and
a processor capable of;
acquiring a touch image from the touch sensor panel;
acquiring ESD information from the one or more ESD sensors; and
compensating the touch image based on the acquired ESD information.
1 Assignment
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Accused Products
Abstract
A touch sensitive device that detects the occurrence of an electrostatic discharge event on the device by analyzing one or more ESD sensors located in various locations on the touch sensitive device is provided. A touch controller can scan touch nodes on the touch sensitive device while simultaneously scanning one or more ESD sensors to detect if a possible ESD event has occurred during the acquisition of a touch image. If an ESD event has occurred during the acquisition of touch data, the touch controller can act to either ignore the data, or compensate the data to account for effects on the touch data caused by the ESD event.
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Citations
21 Claims
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1. A touch sensitive device capable of detecting the occurrence of an ESD event, the device comprising:
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a touch sensor panel having a plurality of touch sensors configured to detect one or more touch or proximity events occurring on the touch sensitive device; one or more ESD sensors distinct from the plurality of touch sensors configured to detect an ESD event on the touch sensitive device independently of the plurality of touch sensors; and a processor capable of; acquiring a touch image from the touch sensor panel; acquiring ESD information from the one or more ESD sensors; and compensating the touch image based on the acquired ESD information. - View Dependent Claims (2, 3, 4)
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5. A method of compensating touch images for the effects of an ESD event on a touch sensitive device, the method comprising:
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acquiring a touch image from a touch sensor panel having a plurality of touch sensors configured to detect touch or proximity events on a touch sensitive device; acquiring ESD information from one or more ESD sensors, distinct from the plurality of touch sensors and operating independently of the plurality of touch sensors, the one or more ESD sensors located on the touch sensitive device; and compensating the touch image based on the ESD information acquired from the one or more ESD sensors. - View Dependent Claims (6, 7, 8)
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9. A non-transitory computer readable storage medium having stored thereon a set of instructions for compensating touch images for ESD events on a touch sensor panel, that when executed by a processor causes the processor to:
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acquire a touch image from a touch sensor panel having a plurality of touch sensors configured to detect touch or proximity events on a touch sensitive device; acquire ESD information from one or more ESD sensors, distinct from the plurality of touch sensors, and operating independently of the plurality of touch sensors, the one or more ESD sensors located on the touch sensitive device; and compensate the touch image based on the ESD information acquired from the one or more ESD sensors. - View Dependent Claims (10, 11, 12)
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13. A touch sensitive device capable of detecting the occurrence of an ESD event, the device comprising:
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a touch sensor panel configured to detect one or more touch or proximity events occurring on the touch sensitive device; one or more ESD sensors, configured to detect an ESD event on the touch sensitive device; and a processor capable of; acquiring a touch image from the touch sensor panel; acquiring ESD information from the one or more ESD sensors; and compensating the touch image based on the acquired ESD information; wherein the one or more ESD sensors are disposed in a plurality of locations throughout the touch sensitive device and wherein the processor is further capable of determining an approximate location of an ESD event occurring on the device, based on the ESD information. - View Dependent Claims (14, 15)
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16. A method of compensating touch images for the effects of an ESD event on a touch sensitive device, the method comprising:
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acquiring a touch image from a touch sensor panel having a plurality of touch sensors configured to detect touch or proximity events on a touch sensitive device; acquiring ESD information from one or more ESD sensors, located on the touch sensitive device; and compensating the touch image based on the ESD information acquired from the one or more ESD sensors; and wherein the one or more ESD sensors are disposed in a plurality of locations throughout the touch sensitive device and wherein the method further comprises determining an approximate location of an ESD event occurring on the device, based on the ESD information. - View Dependent Claims (17, 18)
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19. A non-transitory computer readable storage medium having stored thereon a set of instructions for compensating touch images for ESD events on a touch sensor panel, that when executed by a processor causes the processor to:
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acquire a touch image from a touch sensor panel having a plurality of touch sensors configured to detect touch or proximity events on a touch sensitive device; acquire ESD information from one or more ESD sensors located on the touch sensitive device; compensating the touch image based on the ESD information acquired from the one or more ESD sensors; and wherein the one or more ESD sensors are disposed in a plurality of locations throughout the touch sensitive device and wherein the method further comprises determining an approximate location of an ESD event occurring on the device, based on the ESD information. - View Dependent Claims (20, 21)
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Specification