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:
Nov. 13, 2001
Filed:
Apr. 16, 1999
Applicant:
Inventors:
Darrell E. Issa, Vista, CA (US);
Jerry Birchfield, Vista, CA (US);
Assignee:
Directed Electronics, Inc., Vista, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60R 2/510 ;
U.S. Cl.
CPC ...
B60R 2/510 ;
Abstract
A system for monitoring an area and sounding an alarm comprising. The system employs one or more sensors positioned about the protected area. Each sensor has one or more pulse generators generating one or more pulses each with a preassigned pulsewidth. The sensors are connected to a controller by a single wire. The controller sounds an alarm upon receipt of one or more pulses and identifies the sensor actuating the alarm by the measured pulsewidth.