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:
Feb. 11, 2003
Filed:
Apr. 20, 2000
Nan Ling Goh, Singapore, SG;
Ban Hok Goh, Singapore, SG;
Utt Heng Kan, Singapore, SG;
Kah Liang Gan, Singapore, SG;
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A method for compensating digital samples of an asymmetric read signal is presented. The method involves reading a digital sample of an asymmetric read signal V(t) ( ), generating a compensated sample at least when the digital sample requires compensation ( ), and outputting either the digital sample ( ) or the compensated sample ( ). Also presented is an asymmetry correction block ( ) of a read channel ( ) of a disc drive ( ) that includes an input ( ), a level detector ( ), a compensator ( ), and an output ( ). The level detector ( ) and the compensator ( ) receive the digital sample through the input ( ). The level detector ( ) determines whether the digital sample requires compensation. The compensator ( ) generates a compensated sample at least when the digital sample requires compensation. The output ( ) selectively outputs either the digital sample or the compensated sample.