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:
Feb. 27, 1990
Filed:
May. 03, 1989
Kunihiko Takeuchi, Kawasaki, JP;
Yasuo Shimomura, Tokyo, JP;
Yuji Morishige, Funabashi, JP;
Kiyoshi Hayashi, Tokyo, JP;
Tokyo Keiki Company, Limited, Tokyo, JP;
Abstract
An optical multiplex communication system in which n kinds of digital signals whose logical levels do not simultaneously become true, such as, pulse motor controlling pulses, are multiplexed through a single optical fiber line. The transmitting end generates n kinds of carrier clock signals of different frequencies by clock generating means, produces the respective logical products of the carrier clock signals and the digital signals and then produces a logical sum of the logical product outputs by logical circuits and converts the logical sum output to a light signal by a light transmitter, thereby delivering the light signal onto the single optical fiber line. On the other hand, the receiving end receives and reconverts the light signal to an electric signal by a light receiver, applies the electric signal to n band-pass filters each having a pass band corresponding to the frequency of one of the carrier clock signals to extract the signal according to the frequency, and then detects the filter output by detection circuit means to restore it to the transmitted digital signal.