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. 09, 1999
Filed:
Mar. 24, 1997
Applicant:
Inventor:
Mikio Yamamuro, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 58 ; 369 54 ; 369 47 ;
Abstract
In this invention, in an optical disk on which data is to be recorded in units of one ECC block constructed by 16 sectors, data is recorded at the time other than the initial time, then the data is reproduced to determine an ECC block having a sector with secondary defect, and data for the ECC block which is determined to have the sector with secondary defect is recorded into an ECC block which is separately prepared.