×

Systems and methods for image filtering in sensor devices

  • US 9,383,861 B2
  • Filed: 03/15/2013
  • Issued: 07/05/2016
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
Patent Images

1. A processing system for an input device, the processing system comprising:

  • a sensor module comprising sensor circuitry, the sensor module configured to drive a plurality of transmitter electrodes with transmitter signals;

    receive, with a plurality of receiver electrodes, resulting signals comprising effects corresponding to the transmitter signals; and

    produce, based on the resulting signals, a first sensor image comprising raw data; and

    a filter module, wherein the filter module is configured to produce a transformed sensor image by applying a spatial filter to the raw data in the first sensor image, wherein the spatial filter is a two-axis gradient sweep filter;

    a determination module configured to determine at least one of positional information and a validity of a baseline for the input device based on the transformed sensor image.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×