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. 12, 1996
Filed:
Sep. 01, 1995
Applicant:
Inventor:
Izumi Kawakami, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 58 ; 369 60 ; 369 84 ;
Abstract
An optical disk apparatus in which a write cache processing is executed, comprising a writing function for writing test data to a predetermined area of the optical disk when no write data processing is provided, a checking function of reading test data to check whether the writing function is normal or abnormal, a function of performing the write cache processing in the case of the test writing being normal, and performing the ordinary writing processing in the case of the test writing being abnormal.