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. 24, 1987
Filed:
Dec. 20, 1985
Applicant:
Inventor:
Shinichiro Kuwabara, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455611 ; 369116 ; 372 26 ; 372 32 ;
Abstract
An optical modulation system is disclosed, which comprises an electro-optic modulator for modulating a laser beam according to a modulation signal, a photoelectric transducing means for transducing the output light of the electro-optic modulator into an electrical signal, a control circuit capable of switching of the polarity of a voltage applied to the modulator, an oscillator for supplying a reference oscillation signal to the control circuit, and a phase synchronizing detector for synchronously detecting the output signal of the photo-electric transducing means.