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:
May. 04, 2010
Filed:
Jun. 04, 2004
Mark J. Kranz, Hallsville, TX (US);
Mark J. Kranz, Hallsville, TX (US);
Stemco LLC, Longview, TX (US);
Abstract
Remote communication devices (i.e., radio frequency identification (RFID) tag) and systems for communicating between one or more RFID tags and a reader using a frequency modulation method to encode binary data are disclosed herein. For example, a remote communication device includes an antenna operable to receive and backscatter a carrier signal, wherein the backscattered carrier signal further comprises a secondary signal within an identification bandwidth. The remote communication device also includes a signal processing circuit coupled to the antenna, the signal processing circuit comprising at least one encoding circuit operable to encode binary data into the backscattered carrier signal by periodically modulating the frequency of the secondary signal from one encoding frequency to another one of 2+1 encoding frequencies within the identification bandwidth, wherein n is an integer greater than or equal to 1.