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:
Jan. 01, 2008
Filed:
Apr. 18, 2001
Sam Heidari, Menlo Park, CA (US);
Behrooz Rezvani, Pleasanton, CA (US);
Raminder S. Bajwa, Palo Alto, CA (US);
Jacky Chow, Mountain View, CA (US);
Avadhani Shridhar, Santa Clara, CA (US);
Dale Smith, Fremont, CA (US);
John Gevargiz, Manhattan Beach, CA (US);
Saman Behtash, Bergamo, IT;
Sam Heidari, Menlo Park, CA (US);
Behrooz Rezvani, Pleasanton, CA (US);
Raminder S. Bajwa, Palo Alto, CA (US);
Jacky Chow, Mountain View, CA (US);
Avadhani Shridhar, Santa Clara, CA (US);
Dale Smith, Fremont, CA (US);
John Gevargiz, Manhattan Beach, CA (US);
Saman Behtash, Bergamo, IT;
Ikanos Communication Inc, Fremont, CA (US);
Abstract
A transceiver for communicating a multi-tone modulated communication channel on a subscriber line. The transceiver includes: a digital signal processor (DSP) with a Fourier transform module and an analog front end (AFE). The DSP determines an available range of frequencies on the subscriber line and expands or contracts the tone spacing of each of a fixed number 'N' of tones accordingly by decreasing or increasing the processing interval associated with the Fourier transform of each tone set. The AFE performs digital-to-analog conversion of the multi-tone modulated communication channel at rates compatible with the processing interval of the Fourier transform module; whereby the range of frequencies spanned by the modulated tones on the subscriber line conforms to the available of frequencies on the subscriber line.