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:
Jan. 21, 1986
Filed:
Oct. 26, 1983
Applicant:
Inventor:
Hideo Ashida, Yokohama, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03C / ; H03C / ; H03C / ; H04B / ;
U.S. Cl.
CPC ...
332 / ; 332 18 ; 332 / ; 332 / ; 455 42 ; 455 63 ; 455110 ;
Abstract
A phase modulation method and apparatus for modulating the phase of a carrier wave in accordance with a binary modulating signal to produce a modulated wave. At least one of the amplitude and the phase of the carrier wave or the modulated wave is corrected by predetermined amounts in response to the value of the binary modulating signal, so that the phase position of the modulated waves becomes equal to one of a number of predetermined positions and so that the amplitudes of the modulated waves coincide.