Impulse noise reduction for touch panel sensing
AssigneeMicrosoft Technology Licensing, LLC
InventorBenjamin Imanilov
Life of this patent
Estimating the term…
Abstract
An electronic device is described which has a sensor panel comprising a plurality of receive electrodes configured to measure signals received from one or more transmit electrodes; and a sensor panel control module. The module is configured to receive signals from the plurality of receive electrodes; and for an individual one of the received signals, compute a difference between the received signal and an expected signal which is expected to be received in the absence of impulse noise. The module clips or blanks the received signals according to a threshold applied to the computed difference.
Claims20
An electronic device comprising:
- a sensor panel comprising a plurality of receive electrodes configured to measure signals received from one or more transmit electrodes;
- and
- a sensor panel control module configured to:
- receive signals from the plurality of receive electrodes;
- for an individual one of the received signals, compute a difference between the received signal and an expected signal which is expected to be received in the absence of impulse noise;
- and
- clip or blank the received signals according to a threshold applied to the computed difference.
A sensor panel control module for controlling a sensor panel, the sensor panel control module comprising circuitry configured to:
- receive signals from a plurality of receive electrodes of the sensor panel;
- for an individual one of the received signals, compute a difference between the received signal and an expected signal which is expected to be received in the absence of impulse noise;
- and
- clip or blank the received signals according to a threshold applied to the computed difference.
A method of controlling a sensor panel comprising:
- receiving signals from a plurality of receive electrodes of the sensor panel;
- for an individual one of the received signals, computing a difference between the received signal and an expected signal which is expected to be received in the absence of impulse noise;
- and
- clipping or blanking the received signals according to a threshold applied to the computed difference.
Dependencies are inferred from the claim text.