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:
Aug. 02, 1988
Filed:
Nov. 07, 1985
Applicant:
Inventor:
Tsuyotake Sawano, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; G02B / ; G02F / ;
U.S. Cl.
CPC ...
350354 ; 350 9615 ; 350356 ; 350355 ; 350393 ;
Abstract
An optical D flipflop comprising a 2.times.1 optical switch and a optical bistable element. The flipflop has a first input end adapted to receive optical digital data, a second input end adapted to receive a biasing optical signal and at least one output end for emitting a light beam comprising the bias signal or optical information pulses, depending upon the state of a clock signal applied to the signal flip flop switch. The flip flops, when connected in cascade through light branching circuits, act as a shift register.