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. 03, 1998
Filed:
Oct. 13, 1994
Applicant:
Inventors:
Donald J Urbas, Evergreen, CO (US);
David Ellwood, Lakewood, CO (US);
Assignee:
Bio Medic Data Systems, Inc., Seaford, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
34087017 ; 34087018 ; 34087031 ; 34082554 ; 455 383 ;
Abstract
A passive transponder including an antenna for receiving an input signal and transmitting an output and a memory for storing the data received by the transponder from an interrogator. The transponder can operate in either a read mode or a programming mode. The transponder includes an integrity circuit for indicating the integrity of the input signal, a monitoring circuit that monitors a characteristic of a host and an impedance modulator that prevents the overmodulation of the output signal.