×

Single chip multi-stimulus sensor controller

  • US 8,593,423 B2
  • Filed: 09/30/2011
  • Issued: 11/26/2013
  • Est. Priority Date: 09/10/2008
  • Status: Active Grant
First Claim
Patent Images

1. A controller for a multi-touch sensor, the controller formed on a single integrated circuit, comprising:

  • a transmit oscillator;

    a transmit signal section that generates a plurality of drive signals based on a frequency of the transmit oscillator;

    a plurality of transmit channels that transmit the plurality of drive signals simultaneously to drive the multi-touch sensor;

    a receive channel that receives a sense signal resulting from the driving of the multi-touch sensor;

    a receive oscillator;

    a demodulation section that demodulates the received sense signal based on a frequency of the receive oscillator to obtain sensing results; and

    a memory that stores stimulation information, wherein the plurality of drive signals are selected for transmission through the plurality of transmit channels based on the stimulation information stored in the memory.

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