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.

Date of Patent:
Feb. 17, 2004

Filed:

Jan. 29, 2002
Applicant:
Inventors:

Folkert Horst, Pierrefonds, CA;

Magid Mokhtar, Kirkland, CA;

Assignee:

Canac Inc., St-Laurent, CA;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 7/40 ;
U.S. Cl.
CPC ...
G01S 7/40 ;
Abstract

A system for testing a vehicle antenna is provided including a testing transponder and a monitoring unit. The testing transponder is positioned such that it lies within the electromagnetic field of a vehicle antenna and, while in the electromagnetic field, the testing transponder intermittently transmits signals conveying data to the vehicle antenna. The monitoring unit is in an operative relationship with the antenna and is suitable to receive data indicative of the signals conveying data detected by the vehicle antenna. The monitoring unit detects an error condition associated with the vehicle antenna when the time since the last signal conveying data detected by the antenna exceeds a certain threshold time period.


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