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. 25, 2006
Filed:
Oct. 19, 2000
Applicants:
Wilf Leblanc, Vancouver, CA;
Shawn Stevenson, Surrey, CA;
Inventors:
Wilf LeBlanc, Vancouver, CA;
Shawn Stevenson, Surrey, CA;
Assignee:
Broadcom Corporation, Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and system for detecting a dual tone in a composite signal having first and second components including means for separating the composite signal into its first and second components, means for estimating power of the separated first and second components, means for determining frequency of the separated first and second components, and means for comparing the power and frequency of the first and second components to at least one of a plurality of respective power and frequency thresholds to determine whether the composite signal comprises a dual tone.