Title:
RADIO FREQUENCY IDENTIFICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO2000011592
Kind Code:
A9
Abstract:
A radio frequency identification system includes a transponder and a transponder reader. The transponder, responsive to an interrogation signal continuously transmitted by the transponder reader, generates a transponder signal modulated by an identification signal readable by the transponder reader. The identification signal includes a synchronization portion, a data portion, an output format identification portion, and an error detection portion. The output format identification portion is used by the reader to configure itself for communication with an attached controller. In another aspect of the invention, the transponder reader may be configured to read FSK as well as PSK encoded signals from the transponder.
Inventors:
GEISZLER KENNETH J
WALKER RUSSEL E
WHISTON KENNETH ALAN
KWONG JON
LINDSETH DALE
WALKER RUSSEL E
WHISTON KENNETH ALAN
KWONG JON
LINDSETH DALE
Application Number:
PCT/US1999/018691
Publication Date:
August 17, 2000
Filing Date:
August 17, 1999
Export Citation:
Assignee:
KERI SYSTEMS INC (US)
International Classes:
G06K7/00; (IPC1-7): G06K7/00; G06K17/00
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