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:
Jun. 30, 2009
Filed:
Sep. 06, 2005
Murtaza Ali, Plano, TX (US);
Shahedolla Molla, San Diego, CA (US);
Narasimhan Venkatraman, Plano, TX (US);
Channamallesh Hiremath, Plano, TX (US);
Umashankar S. Iyer, Plano, TX (US);
Udayan Dasgupta, Irving, TX (US);
Austin Paul Hunt, Dallas, TX (US);
Dennis G. Mannering, Garland, TX (US);
Murtaza Ali, Plano, TX (US);
Shahedolla Molla, San Diego, CA (US);
Narasimhan Venkatraman, Plano, TX (US);
Channamallesh Hiremath, Plano, TX (US);
Umashankar S. Iyer, Plano, TX (US);
Udayan Dasgupta, Irving, TX (US);
Austin Paul Hunt, Dallas, TX (US);
Dennis G. Mannering, Garland, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A client premises digital subscriber line (DSL) modem having multi-mode capability is disclosed. In initialization, the modem estimates whether channel conditions are such that digital processing of the received data according to a lower data rate DSL standard, such as ADSL2, may result in a higher effective data rate than receipt and processing according to a higher data rate DSL standard, such as ADSL2+. If so, the DSL modem configures itself, such as by configuring its filter characteristics and sampling frequency, to receive and process data according to the lower data rate DSL standard; the transmitting modem, for example at a central office or service area interface, may continue to operate according to the higher data rate standard (with its bit loading corresponding to a subset of subchannels). The receiving DSL modem processes the payload data according to the lower standard, while processing control messages according to the higher standard.