The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2012
Filed:
Aug. 10, 2007
Curt Carrender, Morgan Hill, CA (US);
John M. Price, Morgan Hill, CA (US);
Frederick A. Nylander, Morgan Hill, CA (US);
John H. Rolin, Morgan Hill, CA (US);
Roger G. Stewart, Morgan Hill, CA (US);
Curt Carrender, Morgan Hill, CA (US);
John M. Price, Morgan Hill, CA (US);
Frederick A. Nylander, Morgan Hill, CA (US);
John H. Rolin, Morgan Hill, CA (US);
Roger G. Stewart, Morgan Hill, CA (US);
Alien Technology Corporation, Morgan Hill, CA (US);
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.