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:
Apr. 30, 1985
Filed:
Jul. 14, 1982
Applicant:
Inventors:
John B Falck, London SW1, GB;
David Robson, Great Barton, Suffolk, IP31 2RL, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q / ; G08B / ;
U.S. Cl.
CPC ...
34082508 ; 340636 ; 340663 ; 34082554 ;
Abstract
An active transponder of an identification system comprises a memory for storing coded information and supplying it to a transmitter output, and data means independent of the memory for supplying further information to the output. The transponder has a battery and the data means can comprise detectors which detect when the voltage of the battery falls below respective predetermined levels. The data means can also comprise input connections arranged to receive signals representing the updated values of respective parameters. These signals are supplied to respective inputs of a data selector independently of the memory.