×

Saving power in a battery powered system having a touch sensor and an RFID tag reader

  • US 9,507,979 B2
  • Filed: 04/24/2013
  • Issued: 11/29/2016
  • Est. Priority Date: 04/27/2012
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of saving power in a battery powered device that includes a radio frequency identification (RFID) tag reader and a touch sensor, said method comprising:

  • providing a touch sensor that can perform proximity and touch sensing;

    providing a radio frequency identification (RFID) tag reader for reading data from an RFID tag, wherein the touch sensor and the RFID tag reader are disposed in the battery powered device;

    maintaining the RFID tag reader in a deactivated state while using the touch sensor to scan for detection of the RFID tag;

    activating the RFID tag reader only after detecting the RFID tag using proximity sensing of the touch sensor;

    reading the RFID tag that was detected by the touch sensor by using the activated RFID tag reader; and

    deactivating the RFID tag reader after reading the RFID tag in order to conserve power in the battery powered device by only actively scanning for RFID tags using the touch sensor and not the RFID tag reader.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×