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:
May. 12, 1998
Filed:
Apr. 15, 1996
Applicant:
Inventors:
Kuniyasu Shimizu, Tokyo, JP;
Hideaki Hirayama, Kanagawa-ken, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
711162 ; 711111 ; 364D / ;
Abstract
A recoverable disk control system for a computer system that includes a checkpoint operation. When an operating system generates a write request to a disk device, the write request and the associated write data are stored into a nonvolatile memory. The operating system is immediately notified as if the write request were completed. The writing the data to the disk device is postponed until the next checkpoint. At the end of the next checkpoint execution, the write request is scheduled for execution. In that case a fault occurs before the write request is scheduled, the write request is discarded.