Multipoint touchscreen

  • US 8,125,463 B2
  • Filed: 11/07/2008
  • Issued: 02/28/2012
  • Est. Priority Date: 05/06/2004
  • Status: Active Grant
  • ×
    • Pin Icon | RPX Insight
    • Pin
First Claim
Patent Images

1. A digital signal processing method, comprising:

  • receiving raw data, the raw data including values for each transparent capacitive sensing node of a touch screen;

    filtering the raw data;

    generating gradient data;

    calculating the boundaries for touch regions base on the gradient data; and

    calculating the coordinates for each touch region.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×