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:
Jan. 24, 2012

Filed:

Jan. 20, 2010
Applicants:

Masaki Iwasaki, Kawasaki, JP;

Yoshirou Aoki, Kawasaki, JP;

Inventors:

Masaki Iwasaki, Kawasaki, JP;

Yoshirou Aoki, Kawasaki, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 13/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A transponder () transmits a reply in response to an interrogation input thereto, the interrogation including twin pulses, and a monitoring processor () transmits to the transponder a pseudo interrogation identical in format to the interrogation, receives from the transponder a reply responding to the pseudo interrogation, and monitors a performance of the transponder, the monitoring processor () including a pulse spacing adjuster () operable to adjust a pulse spacing of twin pulses along with generation of the pseudo interrogation, and a monitor () operable to output an alarm in response to a failed reception or a delayed reception of a reply from the transponder after transmission of a pseudo interrogation with a compliant pulse spacing, and further to output an alarm in response to a reception of a reply from the transponder after transmission of a pseudo interrogation with an uncompliant pulse spacing.


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