Title:
INFORMATION PROCESSOR
Document Type and Number:
Japanese Patent JPH064369
Kind Code:
A
Abstract:
PURPOSE: To provide the information processor which can easily and automatically disuse file and can prevent the file from being erroneously erased.
CONSTITUTION: The entry area of the file stores the holding unit time of that file and the final access date and time, at least. At prescribed timing, the entry area of the objective file is read out (step S101) and it is judged whether the file corresponding to this entry is a data file or not (step S102). In the case of the data file, the current time is compared with time adding the holding unit time in the entry and the final access date and time (step S103). When the file exists over the holding unit time, the file is disused (step S104).
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Inventors:
SUZUKI NORIYUKI
NAGASAKI KATSUHIKO
SUNAKAWA SHINICHI
SAKAGUCHI KATSUHIKO
YOSHIMURA YUICHIRO
YANAGISAWA RYOZO
SUGAWARA YOJI
NAGASAKI KATSUHIKO
SUNAKAWA SHINICHI
SAKAGUCHI KATSUHIKO
YOSHIMURA YUICHIRO
YANAGISAWA RYOZO
SUGAWARA YOJI
Application Number:
JP16516992A
Publication Date:
January 14, 1994
Filing Date:
June 24, 1992
Export Citation:
Assignee:
CANON KK
International Classes:
G06F12/00; (IPC1-7): G06F12/00
Attorney, Agent or Firm:
Kato Taku
Next Patent: SYSTEM FOR STORING DATA OF DATABASE