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. 03, 1987
Filed:
Jun. 06, 1984
Matthew L McConnell, Boulder, CO (US);
William A Gibson, Lafayette, CO (US);
Raycom Systems, Inc., Boulder, CO (US);
Abstract
A connector compatible fiber optic replacement module for use in a local area network coaxial hub for direct communication with TTL level signals to provide a fiber optic communication link. The system uses a first amplification stage having a circuit design which provides a precisely controlled input impedance to allow unit to unit repeatability of response of the circuit in a simple and easy manner. High-frequency response of the circuit is provided by a cascode transistor pair configuration which limits the effects of virtual capacitance. Direct coupled biasing is employed throughout the receiver circuit to limit the number of components utilized. The transmitter circuit employs a standard TTL open collector driver circuit used in peripheral units to drive an infra red LED for transmission over fiber optic communication link.