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:
Oct. 14, 2014
Filed:
Aug. 09, 2013
Lsi Corporation, San Jose, CA (US);
Eui Seok Hwang, Milpitas, CA (US);
Richard Rauschmayer, Longmont, CO (US);
Shaohua Yang, San Jose, CA (US);
Bruce Wilson, San Jose, CA (US);
LSI Corporation, San Jose, CA (US);
Abstract
A data processing circuit includes a long magnet identification circuit operable to identify long magnet bits in data to be processed, the long magnet bits comprising bits having a same value as a number of preceding and subsequent bits, an error calculation circuit operable to subtract an ideal version of the long magnet bits from the long magnet bits to yield an error signal, an adjacent track interference metric calculation circuit operable to calculate an adjacent track interference metric based on the error signal, and a comparator circuit operable to compare the adjacent track interference metric with a threshold value and to assert a refresh signal when the adjacent track interference metric is greater than the threshold value.