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:
May. 01, 1990
Filed:
Sep. 21, 1987
John W Hicks, Northboro, MA (US);
Other;
Abstract
A fiber optics communications network system that is adapted for operation with either electrical or optical central office functions, i.e. switching and routing functions, is adapted for connection to electrical or fiber optic conduits for subscriber entrance sites, and which is composed of passive and inert components except for optical modulating devices at communications-transmission stations. The system is characterized by use of a train of pulses supplied to receiver lines and, most advantageously, use of an ancillary pulse in selection and amplification of individual signals for reception by receiver stations and time-division-demultiplexing. In preferred embodiments, the transmission side of the system is assigned a fixed optical frequency address and a fixed time slot is assigned to each transmission station.