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:
Mar. 10, 2009
Filed:
Jun. 06, 2005
Vijay Pillai, Mukilteo, WA (US);
Harley Heinrich, Snohomish, WA (US);
Rene Martinez, Seattle, WA (US);
Vijay Pillai, Mukilteo, WA (US);
Harley Heinrich, Snohomish, WA (US);
Rene Martinez, Seattle, WA (US);
Intermec IP Corp., Woodland Hills, CA (US);
Abstract
At least one identification (ID) number is used to effectuate communication between a radio frequency (RF) number and a radio frequency identification (RFID) base station. In accordance with a first embodiment of the present invention, at least a first ID number and a second ID number are stored on an RF transponder. Upon receipt of a write request, the RF transponder compares an ID number portion of the write request with the second ID number stored on the RF transponder. If the numbers matched, then a data portion of the write request is stored on the RF transponder. If the ID numbers do not match, then the write request is ignored. In accordance with a second embodiment of the present invention, the RF transponder is adapted to determine the second ID number using at least a portion of the first ID number. For example, the second ID number could be a subset of the first ID number, determined using an algorithm that is based (at least in part) on a portion of the first ID number, etc. In accordance with a third embodiment of the present invention, the second ID number is independent of the first ID number. For example, the second ID number could be a constant that is unrelated to the first ID number. In accordance with a fourth embodiment of the present invention, the data portion of the write request is stored on the RF transponder before the ID number portion of the write request is compared to the ID number stored on the RF transponder. If the ID number portion of the write request matches the ID number stored on the RF transponder, then the stored data is left undisturbed. If, however, the ID numbers do not match, then the stored data is erased (e.g., replaced with a null set, the original data, etc.).