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:
Jul. 18, 2006
Filed:
Jan. 09, 2004
William F. Gallagher, Iii, Phoenixville, PA (US);
Ronald Salesky, Tabernacle, NJ (US);
Shinichiro Inui, Haddonfield, NJ (US);
Riccardo Benedetti, Voorhees, NJ (US);
Samuel Alexander, Phoenix, AZ (US);
Lee R. Furey, Phoenix, AZ (US);
Youbok Lee, Chandler, AZ (US);
William F. Gallagher, III, Phoenixville, PA (US);
Ronald Salesky, Tabernacle, NJ (US);
Shinichiro Inui, Haddonfield, NJ (US);
Riccardo Benedetti, Voorhees, NJ (US);
Samuel Alexander, Phoenix, AZ (US);
Lee R. Furey, Phoenix, AZ (US);
Youbok Lee, Chandler, AZ (US);
Checkpoint Systems, Inc., Thorofare, NJ (US);
Microchip Technology Incorporated, Chandler, AZ (US);
Abstract
Arbitration of multiple transponders, such as RFID tags, occurs in an interrogation field. The arbitration process is custom-tailored for individual applications, under software control, by the transponder reader or tag reader. Different wake-up slots are calculated for each tag during successive transmission cycles based upon the tag ID and the transmission cycle number. The tag reader may also send a special command to a tag to read its data and cause the tag to become decoupled from the environment. The tags may be selectively placed in either a tag-talk-first mode or a reader-talk-first mode. Furthermore, the tag reader may send a special fast read command to the tag which includes a read request and at least one parameter of the read request.