Methods and apparatuses for identification

Details Methods and apparatuses for identification Methods and apparatuses for identification

2007-03-20

2007-03-20

Zimmerman, Brian (Department: 2612)

Communications: electrical

Selective

Interrogation response

C340S010100, C340S010200, C340S572400, C340S572200, C340S870030, C340S870030, C340S010410, C340S010420, C340S010500, C340S010510

Reexamination Certificate

active

10267924

ABSTRACT:
An identification system includes a reader and one or more tags. The reader identifies tags such as radio frequency (RF) tags. The system divides a number space into n bins, wherein each bin is associated with m unique bits of the number space, and the number space contains the identification codes of the tags. A command is issued to test v bits of the number space. A response is received from a tag, wherein the response occurs when a first portion of an identification code of the tag matches the v bits of the number space. A timing of the response corresponds to a particular bin and m unique bits associated with the particular bin correspond to a second portion of the identification code.

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