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. 30, 2008
Filed:
Dec. 20, 2004
Angelo Dati, Viareggio, IT;
Pierandrea Savo, Pavia, IT;
Ezio Iacazio, Vercelli, IT;
Kelly Fitzpatrick, Sudbury, MA (US);
John J. Mcewen, Legal Representative, The Woodlands, TX (US);
Bahjat Zafer, Sunnyvale, CA (US);
Angelo Dati, Viareggio, IT;
Pierandrea Savo, Pavia, IT;
Ezio Iacazio, Vercelli, IT;
Kelly Fitzpatrick, Sudbury, MA (US);
John J. McEwen, legal representative, The Woodlands, TX (US);
Bahjat Zafer, Sunnyvale, CA (US);
STMicroelectronics S.r.l., , IT;
Maxtor Corporation, Longmont, CO (US);
Abstract
A method for detecting signals affected by intersymbol interference provides for a path memory in the form of a trellis admitting survivor paths comprising a first and a second stage. The first stage includes a shift register exchange with a given number of states and a given length λ. The first stage outputs a first state Son the survivor path for the best state A, and a second state Son the survivor path for another state B. The second stage is configured as a two-state shift register exchange having a respective memory length Λ, including respective first and second registers. In the respective first and second registers the survivor paths are stored leading to a respective first σand second σstate, whereby the respective first register contains the backend of the best survivor path, while the respective second register contains the backend of an alternative survivor path.