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:
Dec. 08, 1981
Filed:
May. 31, 1979
Applicant:
Inventors:
Robert L Richmond, Frederick, MD (US);
Paul F Wyar, Mt. Airy, MD (US);
Assignee:
Digital Communications Corporation, Gaithersburg, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; G06F / ;
U.S. Cl.
CPC ...
371-6 ; 328115 ; 371-5 ; 455 67 ;
Abstract
An on-line channel monitor, for measuring E.sub.b /N.sub.O, measures the quality of a communication channel while the channel is in use. The channel monitor employs a soft-decision demodulator so as to compare analog signal levels of an AGC compensated signal in a demodulator with the desired signal level. Deviations, termed pseudo-errors, are counted and the number of counts integrated. The result is employed to drive a meter calibrated in terms of E.sub.b /N.sub.O.