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:
Feb. 10, 2015
Filed:
Aug. 01, 2013
Applicant:
Cambridge Silicon Radio Limited, Cambridge, GB;
Inventor:
Nicolas Graube, Barrington, GB;
Assignee:
Cambridge Silicon Radio Limited, Cambridge, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 29/00 (2006.01); H04W 12/04 (2009.01);
U.S. Cl.
CPC ...
H04W 12/04 (2013.01);
Abstract
A short-range communication tag includes a transmitter, a clock circuit providing a clock value and a memory containing a unique identification value. The tag further includes a processor which generates encryption keys with a period of K seconds and combines the unique identification value with the encryption key, according to a predetermined encryption method, to generate an obfuscated unique identification value. The tag further includes a short-range transmitter to transmit the tag identification value.