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:
Nov. 25, 1980
Filed:
Mar. 26, 1979
Charles A Brackett, Summit, NJ (US);
Stewart D Personick, Cupertino, CA (US);
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Abstract
A transitionally encoded data signal, which has a DC component and a bipolar AC component, is detected in an asynchronous receiver which includes a filter 16 for separating the AC and DC components into separate circuit paths, an amplifier 22 in the AC path, a feed-forward network 28 in the DC path for establishing a pair of threshold levels V.sub.th+ and V.sub.th- for detecting the positive and negative bipolar pulses, respectively, a dual comparator 26 for comparing the output of the amplifier with each of said threshold levels and for generating an output pulse whenever the thresholds are exceeded, and a set-reset flip-flop 34 responsive to the output pulses for reconstructing the binary signal which was transitionally encoded at the transmitter. Use of the receiver in a fiber-optic lightwave system is specifically described.