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:
Jul. 30, 2002
Filed:
Aug. 29, 2000
Applicant:
Inventor:
Gene Sonu, San Jose, CA (US);
Assignee:
Oak Technology, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/09 ;
U.S. Cl.
CPC ...
G11B 5/09 ;
Abstract
Apparatus and method for detecting zero-crossings and correcting asymmetry of an RF signal. The RF signal is first converted into a digital signal having a plurality of samples. Zero-crossings detection is achieved by calculating the differences between neighboring samples, and by determining whether the differences exceed a pre-determined threshold value. Zero-crossings are also detected by comparing the differences to a pre-determined negative threshold value when the differences are negative. If a zero-crossing sample, a sum of the data values of the neighboring samples is used to generate an asymmetry offset value.