Sensor-based esd detection
AssigneeApple Inc.
InventorsDavid H. C. SHIH, Albert Lin, Jacob L. Matlick
Life of this patent
Estimating the term…
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.
Claims15
A touch sensitive device capable of detecting the occurrence of an ESD event, the device comprising:
- 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.
A method of compensating touch images for the effects of an ESD event on a touch sensitive device, the method comprising:
- acquiring a touch image from a touch sensor panel 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.
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:
- acquire a touch image from a touch sensor panel 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;
- and
- compensate the touch image based on the ESD information acquired from the one or more ESD sensors.
Dependencies are inferred from the claim text.