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:
May. 21, 1979
Applicant:
Inventor:
Charles E Huffman, Plano, TX (US);
Assignee:
Rockwell International Corporation, El Segundo, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455 49 ; 3401 / ;
Abstract
The present invention is directed to a system which accomplishes forwarding or retransmission of signals requiring preemphasis and signals not requiring preemphasis while using a single spare channel for forwarding either type of signal upon failure of a primary channel. This is accomplished by designing each channel to have passive and selectable circuits through which the signal is passed for preemphasis or attenuation depending upon the type of signal used in the primary portion of that communication channel before being applied to the selection switches of the spare channel.