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. 27, 1998
Filed:
Sep. 29, 1995
Applicant:
Inventors:
William Lewis Betts, St. Petersburg, FL (US);
Ramon B Hazen, North Redington Beach, FL (US);
Robert Earl Scott, Indian Rocks Beach, FL (US);
Assignee:
Paradyne Corporation, Largo, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370289 ; 370269 ; 370290 ; 370292 ; 375222 ; 375231 ; 375350 ; 379410 ;
Abstract
A far-end modem transmits a 'pilot tone' during the time that a near-end modem is training its echo canceler. Correspondingly, the near-end modem is modified to notch, or filter, out this pilot tone from the received signal. The filtered received signal is then used by the near-end modem to train its echo canceler.