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Method and system for low cost, power efficient, wireless transponder devices with enhanced functionality

  • US 8,390,433 B2
  • Filed: 04/09/2010
  • Issued: 03/05/2013
  • Est. Priority Date: 04/09/2010
  • Status: Expired due to Fees
First Claim
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1. An RFID transceiver device for transmitting sensor data comprising:

  • a microcontroller with a clock, said clock having an adjustable speed that is changed by an external input signal,at least one sensor coupled to the microcontroller;

    backscatter circuitry associated with the microcontroller for transmission of a backscattered signal from the microcontroller to an RFID reader; and

    a battery to power the microcontroller,wherein data from the at least one sensor is stored in non-volatile memory of the microcontroller if the battery is at a predetermined low level, and is read later when the battery is at a higher level.

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