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AssigneeQUALCOMM Incorporated
InventorsRichard Stacy Withers, David Johnson, Hrishikesh Panchawagh
Estimating the term…
Methods, systems, and devices for detection of a protective cover film on a capacitive touch screen are described. A device may include a capacitive touch screen having a surface and a sensor grid underneath the surface having a set of conductive columns and a set of conductive rows. The device may measure a mutual capacitance between a subset of conductive columns or a subset of conductive rows associated with a sensor grid, and compare the measured mutual capacitance between the subset of conductive columns or the subset of conductive rows to a baseline mutual capacitance associated with the set of conductive columns and the set of conductive rows. According to the comparison, the device may determine a presence of a protective layer in contact with the surface of the capacitive touch screen, and adjust an operating characteristic of the sensor grid.
An apparatus, comprising:
A method comprising:
An apparatus, comprising:
Dependencies are inferred from the claim text.