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. 20, 2004
Filed:
Aug. 21, 2000
Applicant:
Inventors:
Tim Murphy, Ramona, CA (US);
Martin Staszak, Poway, CA (US);
Assignee:
3Com Corporation, Santa Clara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/24 ; H04B 1/700 ;
U.S. Cl.
CPC ...
H04M 1/24 ; H04B 1/700 ;
Abstract
A method for optimizing downstream data transfer in a telephone from a splitterless asymmetric digital subscriber line modem. The modem examines the power spectrum of fast retrain signals both when the telephone is on-hook and off-hook. By comparing the power in the spectra, the modem may determine whether to cut back its transmitted power to lessen the noise in the downstream channel. In this manner, a customer may simultaneously use the telephone and the modem on the same telephone loop.