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:
May. 20, 2014
Filed:
Aug. 23, 2011
James A. Bailey, Snowflake, AZ (US);
Nayak Ratnakar Aravind, Allentown, PA (US);
Robert H. Leonowich, Fleetwood, PA (US);
Erich F. Haratsch, Bethlehem, PA (US);
James A. Bailey, Snowflake, AZ (US);
Nayak Ratnakar Aravind, Allentown, PA (US);
Robert H. Leonowich, Fleetwood, PA (US);
Erich F. Haratsch, Bethlehem, PA (US);
LSI Corporation, San Jose, CA (US);
Abstract
Methods and apparatus are provided for processing a signal in a read channel using a selective oversampled analog to digital conversion. The disclosed selective oversampled analog to digital conversion simplifies the analog design by transferring at least a portion of the equalization and/or filtering processes to the digital domain. An analog input signal in a read channel is converted to a digital signal to generate one or more digital samples corresponding to the analog input signal for a given bit interval. The analog input signal is selectively filtered in an analog domain in a first mode and the digital samples are selectively filtered in a digital domain in a second mode. A data detection algorithm is applied to the digital samples to obtain a detected output. The selection of the first mode and the second mode can be, for example, based on channel conditions. The analog to digital conversion can be performed at a baud rate in the first mode and at an oversampled rate in the second mode.