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:
Nov. 10, 2009
Filed:
Jul. 02, 2007
Applicant:
Donnie Allen Smith, Jr., Raleigh, NC (US);
Inventor:
Donnie Allen Smith, Jr., Raleigh, NC (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q 5/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
For reducing the frequency with which RFID transponders are read in an RFID system, the RFID system logs a timestamp associated with each read of an RFID transponder along with the tag ID and reader identifier. The timestamp associated with each log entry is monitored with respect to an expiration value so that expired log entries may be identified. When a log entry is determined to be expired, other elements of the RFID system are notified of the associated tag ID and reader identifier, and the storage occupied by the expired log entry is freed.