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:
Jul. 01, 1986
Filed:
Apr. 03, 1984
Applicant:
Inventors:
Daniel C Upp, Southbury, CT (US);
William G Bartholomay, Seymour, CT (US);
Assignee:
ITT Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ; H04J / ; H04L / ;
U.S. Cl.
CPC ...
370 27 ; 370 24 ; 370 28 ; 1791 / ; 1791 / ;
Abstract
A duplex digital transmitter system is disclosed which permits simultaneous digital signal exchange over a two-wire loop. Two sets are provided at the ends of the loop, each having a three-port lattice adapted to separate the transmitted and received digital signals. The digital signals are encoded using a biphase scheme so that they have a zero D.C. component. Therefore the loop is used simultaneously to transmit D.C. power from one set to the other.