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:
Jan. 05, 2010
Filed:
Aug. 10, 2004
Timothy Michael Schaefer, Rochester, MN (US);
Jonathan Darrel Coker, Rochester, MN (US);
Rick Allen Philpott, Rochester, MN (US);
Edward Brian Welch, Rochester, MN (US);
David R. Holmes, Iii, Rochester, MN (US);
Timothy Michael Schaefer, Rochester, MN (US);
Jonathan Darrel Coker, Rochester, MN (US);
Rick Allen Philpott, Rochester, MN (US);
Edward Brian Welch, Rochester, MN (US);
David R. Holmes, III, Rochester, MN (US);
Mayo Foundation for Medical Education and Research, Rochester, MN (US);
Abstract
A system provides for remote monitoring using asynchronous code division multiple access (CDMA) communication techniques between a base station and one or more transponders. Each transponder is attached or otherwise associated with an object or an environment to be monitored. Upon receipt of an interrogation signal, a transponder generates and transmits a coded transponder signal containing the monitored data. The coded transponder signal is generated using a spreading code. Each transponder is associated with a unique, mutually exclusive set of spreading codes. Each spreading code is based on a unique transponder address and the monitored data to be sent. A detector asynchronously monitors received signals for any of the available spreading codes. Once the detector detects a particular spreading code, the base station can identify the source transponder and extract the monitored data.