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:
Aug. 26, 2003
Filed:
May. 25, 2000
Gene Sonu, San Jose, CA (US);
Oak Technology, Inc., Sunnyvale, CA (US);
Abstract
An apparatus for estimating values for Eight-Fourteen Modulated (EFM) data includes a peak detector and modification circuitry. The peak detector receives a first set of signals representing initial values of a sequence of EFM datums, each of which has an initial value that is a member of a first set of values including {−b, −a, c, a, b} where |b|>|a|>|c|. The peak detector analyzes a first subsequence of the sequence of EFM datums to determine whether a peak has occurred and, if so, asserts a modify signal. The modification circuitry responds to assertion of the modify signal by replacing the initial values of a second subsequence of the sequence EFM datums with revised values. The second subsequence of EFM datums follows the first subsequence of EFM datums and each revised value of the second subsequence has an absolute value that is a member of the first set of values.