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:
Apr. 13, 2004
Filed:
Aug. 06, 2002
Applicant:
Inventors:
Thai-Bao H. Kien, Norcross, GA (US);
Jiening Ao, Suwanee, GA (US);
Lamar E. West, Jr., Maysville, GA (US);
Assignee:
Scientific-Atlanta, Inc., Lawrenceville, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 2/500 ; H04B 1/702 ; H04B 1/700 ;
U.S. Cl.
CPC ...
H04L 2/500 ; H04B 1/702 ; H04B 1/700 ;
Abstract
The present invention provides an improved apparatus and method for detecting a reverse carrier signal. The present invention utilizes a peak detector/envelope filter for determining the peak level of the reverse analog waveform. The peak level is compared to a threshold level during a predetermined time period to determine the presence of a valid reverse carrier signal. Once determined, an enable signal is provided to an electronics device that allows further transmission of the reverse signals.