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:
Oct. 08, 1996
Filed:
Nov. 07, 1994
Bruce A Beauchamp, Sunnyvale, CA (US);
James C Beffa, Sunnyvale, CA (US);
Lockheed Martin IMS Corporation, Teaneck, NJ (US);
Abstract
An adaptive digital squelch system, responsive to ambient RF background noise, that automatically adjusts the receiver squelch level during intervals when no valid signal is being received. A valid signal is considered to be a signal that is greater than the receiver squelch level and which contains an audio signal at a specific frequency; otherwise, the signal is considered noise. When the invention detects the absence of a valid signal, the squelch level is periodically calculated by averaging multiple noise signal levels at multiple frequencies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile