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:
Oct. 12, 2004
Filed:
Sep. 24, 2002
Applicant:
Inventor:
Osamu Nishikido, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03D 1/00 ; H03D 1/24 ;
U.S. Cl.
CPC ...
H03D 1/00 ; H03D 1/24 ;
Abstract
A first automatic phase control (APC) detection circuit generates an APC detection signal having normal polarity from an amplitude modulation signal and APC detection reference signal. A second APC detection circuit generates an APC detection signal having reverse polarity from the amplitude modulation signal and the APC detection reference signal. A switch selects the APC detection signal having normal polarity in case of normal modulation and selects the APC detection signal having reverse polarity in case of overmodulation.