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:
Apr. 29, 2003
Filed:
Jan. 31, 2000
John J. Kelly, Menlo Park, CA (US);
Oak Technology, Inc., Sunnyvale, CA (US);
Abstract
A method determines a power value for writing data on a disk. Write-patterns are written on the disk, and each write-pattern is written at an associated power value. For each write-pattern of at least a subset of the write-patterns, the write-pattern is read, a bit error corresponding to the write-pattern is determined to generate a calibration profile of associated bit errors and power values, and a selected power value is designated based on the calibration profile. In one embodiment, the selected power value is designated based on both the calibration profile and an asymmetry value associated with each write-pattern. In another embodiment, the selected power value is designated based on both the calibration profile and a gamma value associated with each write-pattern.