Title:
DOCUMENTATION DEVICE
Document Type and Number:
Japanese Patent JPS62259165
Kind Code:
A
Abstract:
PURPOSE:To attain the secrecy protection of an optional part of a document, etc. by dividing the produced document into blocks by the contents of those documents and adding passwords having editing or display inhibiting functions to those blocks. CONSTITUTION:The prescribed documents and the passwords of each text of those documents are written on a disk 5 and each text forms a single block. When a user operates a keyboard 1 to indicate the display (editing) of a document stored in a document text buffer 4, a CPU 2 reads successively block information on a block information table buffer 6. Then it is checked whether a display (editing)-unable password is added or not to each block together with decision for coincidence or dissidence with the password stored in the CPU 2. When no coincidence with the password is obtained, a display (editing)- unable password is decided. The display (editing) is allowed for the blocks having no password. Then the display (editing) is allowed when the coincidence with the password of an internal memory of the CPU 2 is obtained.
Inventors:
YAMAMOTO MASAO
Application Number:
JP10203186A
Publication Date:
November 11, 1987
Filing Date:
May 06, 1986
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G06F3/06; G06F12/00; G06F12/14; G06F17/21; G06F21/12; G06F21/60; G06F21/62; (IPC1-7): G06F3/06; G06F12/00; G06F12/14; G06F15/20; G06F15/30
Attorney, Agent or Firm:
Katsuo Ogawa
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