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:
Sep. 10, 2002
Filed:
Apr. 07, 1999
Applicant:
Inventors:
Chien-Meen Hwang, San Jose, CA (US);
Muoi V. Huynh, San Jose, CA (US);
Maged F. Barsoum, Sunnyvale, CA (US);
Hungming Chang, Cupertino, CA (US);
Eugen Gershon, San Jose, CA (US);
Assignee:
Legerity, Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 4/00 ;
U.S. Cl.
CPC ...
H04J 4/00 ;
Abstract
A physical layer device (PHY) device in a home LAN employs discrete multitone technology (DMT). The DMT system enables usage of existing residential wiring, which typically is telephone system grade twisted copper pair. The PHY device comprises an analog front end (AFE) circuit that frequency shifts the spectral images by using a clock signal. The multiplication of the clock signal is accomplished using a digital mixer or, in the alternative, an analog switch.