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:
Nov. 02, 1999
Filed:
Jul. 30, 1997
Applicant:
Inventors:
Nobuhide Sugimoto, Yokohama, JP;
You Yoshioka, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 14 ; 369 58 ;
Abstract
The data recorded on an optical disk is read by an optical pickup. After the thus obtained signal has been subjected to a waveform equalization process by a waveform equalizer, it is demodulated via a data slicer. A parameter for obtaining a waveform equalization characteristic best suited for reading the recorded data has been recorded on the optical disk. The demodulated parameter is decoded by a data processor. The data processor switches the waveform equalization characteristic of the waveform equalizer.