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:
Sep. 21, 1982
Filed:
Oct. 23, 1980
Applicant:
Inventor:
Robert Treiber, Fairfield, CT (US);
Assignee:
International Telephone and Telegraph Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H04B / ;
U.S. Cl.
CPC ...
375 12 ; 333 / ; 1791 / ; 1791702 ; 364724 ; 3403 / ;
Abstract
A circuit for automatically digitally synthesizing an output impedance, which may be a matching line terminating impedance, is provided. The means for establishing the desired output impedance characteristic is accomplished using a simplified recursive digital filter arrangement. In addition, means are provided for eliminating the effects of incidental undesirable shunting impedances.