System using copy of current pointer saved before changing a sel

Details System using copy of current pointer saved before changing a sel System using copy of current pointer saved before changing a sel

1991-02-28

1994-07-05

Lee, Thomas C.

Excavating

371 101, 3642665, 3642685, 364285, 364DIG1, 3649442, G06F 1116

Patent

active

053275519

ABSTRACT:
A system for executing an updating or restoring method for stored data groups in a nonvolatile storage device provides a data storage portion having a first data domain and a second data domain which make up one pair and are an object to be updated. An information management table manages a pointer and a current pointer corresponding to each of the data domains. A pointer updating log management table temporarily stores the current pointer when the data domain is updated. A data updating processor updates data by temporarily storing the current pointer, by updating the first or the second data domain, and by transferring the current pointer, when data is updated. A data restoring processor restores information in the data domain before updating by restoring the contents of the current pointer, when data is restored after interruption of the updating operation. Thus, high speed data updating and restoring can be carried out.

REFERENCES:
patent: 3969723 (1976-07-01), Kennicott
patent: 4459658 (1984-07-01), Gabbe et al.
patent: 4648036 (1987-03-01), Gallant
patent: 4805095 (1989-02-01), Armstrong et al.
patent: 4814971 (1989-03-01), Thatte
patent: 4823261 (1989-04-01), Bank et al.
patent: 4945474 (1990-07-01), Elliott et al.
patent: 5008786 (1991-04-01), Thatte
patent: 5008814 (1991-04-01), Mathur
patent: 5043866 (1991-08-01), Myre, Jr. et al.
patent: 5043871 (1991-08-01), Nishigaki et al.
patent: 5163148 (1992-10-01), Walls
patent: 5210854 (1993-05-01), Beaverton et al.
Ouchi, N. K. et al., "Check Point Copy for a Two-Stage Store", IBM Technical Disclosure Bulletin, vol. 20, No. 5, Oct. 1977, pp. 1955-1958.

Affiliated with

Also associated with

Rating

System using copy of current pointer saved before changing a sel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System using copy of current pointer saved before changing a sel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System using copy of current pointer saved before changing a sel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-803371