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. 24, 1990
Filed:
Feb. 02, 1989
Applicant:
Inventor:
James H Leveque, Ellicott City, MD (US);
Assignee:
AMAF Industries, Inc., Columbia, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455 35 ; 455 63 ; 455296 ; 455312 ; 455 50 ; 333 14 ;
Abstract
A method and apparatus for reducing noise fluctuation in a linked compressor-expander (Lincompex) telecommunications system in which an artificial tone signal is injected into a demodulator of the communication system to bias the output toward self quieting. The artificial tone is developed to have a level that is effective below a threshold level of Lincompex demodulation such that during normal communication transmission, the artificial tone has no deleterious effect, while below the demodulation threshold, random noise inputs are effectively biased to a constant level to produce a quieting effect on the demodulator output.