Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
September 7, 2010
Patent Application Number
11293628
Date Filed
December 1, 2005
Patent Primary Examiner
Patent abstract
In some embodiments of a radio frequency identification (RFID) system, multiple bits of data may be encoded at the same time based on a frequency shift key (FSK) modulation technique using multiple frequencies, by permitting any or all of the frequencies to be modulated on a carrier wave at the same time. In some embodiments a parallel but asymmetric down-conversion of the frequencies may allow both frequencies to be detected with identical filters.
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