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:
Mar. 19, 1996
Filed:
Nov. 15, 1993
Toru Nakata, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A communication system includes a plurality of nodes, a data signal line and a control signal line. The plurality of nodes are coupled to each other through the data signal line so as to perform communication by using a signal multiplexed by at least one of a wavelength-division multiplexing scheme and a time-division multiplexing scheme. The plurality of nodes also coupled to each other through the control signal line by which a control signal including a management table indicative of at lease one of a time slot and a wavelength of a signal used for communication in the data signal line is circulated. Each node inputs a control signal circulating through the control signal line to select at least one of a time slot and a wavelength of a signal not used for communication on the basis of the management table of the input control signal, so that the communication is performed through the data signal line by using at least selected one of the time slot and the wavelength of the signal and the management table is updated to be outputted to the control signal line.