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Drew Thwaites Phones & Addresses

  • 6365 Warriors Run, Littleton, CO 80125
  • Denver, CO

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Us Patents

Method And Apparatus For Communicating Data With A Transponder

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US Patent:
6356738, Mar 12, 2002
Filed:
Feb 18, 1999
Appl. No.:
09/252951
Inventors:
Gary W. Schneider - Castle Rock CO, 80104
Drew J. Thwaites - Littleton CO, 80125
International Classification:
H04B 500
US Classification:
455 41, 3405721, 340505
Abstract:
A method and system for communicating data between controller and a transponder where the processor is powered by current received from an antenna. The controller is magnetically coupled to the transponder to sense impedance variations in the transponder. The impedance of the transponder is altered by varying current used by a processor within the transponder. The processor current is controlled by varying the processor clock rate.
Drew J Thwaites from Littleton, CO, age ~62 Get Report