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. 27, 2004
Filed:
Oct. 12, 1999
Applicant:
Inventors:
Brian Martin, Nepean, CA;
Jennifer McKenzie, Ottawa, CA;
Assignee:
Instantel, Inc., Ottawa, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B 2/900 ;
U.S. Cl.
CPC ...
G08B 2/900 ;
Abstract
A method of detecting a variable number of objects within range of a receiver, is comprised of transmitting from each object a supervisory message from time to time, detecting the supervisory message by the receiver over a detection interval, and varying the detection interval based on a number of objects under supervision and the probability of collisions of the supervisory messages.