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. 24, 2002
Filed:
Feb. 04, 1999
Yaqi Cheng, Rowlett, TX (US);
Adam M. Chellali, Richardson, TX (US);
Michael O. Polley, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
In a splitterless Digital Subscriber Line (DSL) modem , a receiver architecture ( ) that permits monitoring of harmonics within the upstream channel of a DSL connection. The receiver ( ) can detect the harmonics by monitoring the harmonics in some empty tones or specified tones. A threshold can be set to differ the normal noise power and harmonics power in those empty or specified tones. When a POTS device ( ) coupled to same wire line pair ( ) as the DSL modem ( ) goes off-hook, the DSL modem ( ) can switch from the normal state to an off-hook state in which the harmonics are reduced to minimum by transmitting only the upper sub-band tones of the upstream transmission channel at reduced power levels.