×

Near field communication devices and methods

  • US 9,112,543 B2
  • Filed: 12/27/2012
  • Issued: 08/18/2015
  • Est. Priority Date: 12/27/2012
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of communicating, the method comprising:

  • transmitting, in a first time period, a signal for powering a communications device; and

    transmitting, in a second time period, a data signal to the communications device using one of phase shift keying (PSK), frequency shift keying (FSK) and quadrature amplitude modulation (QAM),wherein transmitting in the first time period comprises adjusting a Q factor of an antenna system used to transmit the signal to a first value, and transmitting in the second time period comprises adjusting the Q factor of the antenna system to a second value and using the antenna system for the transmitting, and wherein the first value is higher than the second value.

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