JPS5580165A - File processing system - Google Patents

File processing system

Info

Publication number
JPS5580165A
JPS5580165A JP15271478A JP15271478A JPS5580165A JP S5580165 A JPS5580165 A JP S5580165A JP 15271478 A JP15271478 A JP 15271478A JP 15271478 A JP15271478 A JP 15271478A JP S5580165 A JPS5580165 A JP S5580165A
Authority
JP
Japan
Prior art keywords
code
file
register
identification
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15271478A
Other languages
Japanese (ja)
Inventor
Masami Yamamoto
Osamu Kanzawa
Shuhei Inamori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15271478A priority Critical patent/JPS5580165A/en
Publication of JPS5580165A publication Critical patent/JPS5580165A/en
Pending legal-status Critical Current

Links

Landscapes

  • Management Or Editing Of Information On Record Carriers (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To protect contents of files where no processing is required, by registering previously identification codes on a storage medium and performing no processing for a pertinent file in case that the codes above agree with an indicated code.
CONSTITUTION: When a job controlling program is loaded, the identification designation code stored in the program is set into code register 17. The identification code of the file label part of flexible disc 14 is applied to comparator circuit 18 through read control part 15 and is compared with the code in code register 17. When this code agrees with the designation code set in register 17 in circuit 18, skip circuit 28 is activated, and the file label is skipped to retrieve the next file label. In this case, AND gate 22 is turned off. Consequently, the pertinent file is not accessed, and contents of it are protected surely.
COPYRIGHT: (C)1980,JPO&Japio
JP15271478A 1978-12-12 1978-12-12 File processing system Pending JPS5580165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15271478A JPS5580165A (en) 1978-12-12 1978-12-12 File processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15271478A JPS5580165A (en) 1978-12-12 1978-12-12 File processing system

Publications (1)

Publication Number Publication Date
JPS5580165A true JPS5580165A (en) 1980-06-17

Family

ID=15546541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15271478A Pending JPS5580165A (en) 1978-12-12 1978-12-12 File processing system

Country Status (1)

Country Link
JP (1) JPS5580165A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002589A1 (en) * 1982-12-29 1984-07-05 Fanuc Ltd Method of protecting file of numerical control
JPH03102440A (en) * 1989-09-16 1991-04-26 Hitachi Ltd File device having secrecy protecting function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002589A1 (en) * 1982-12-29 1984-07-05 Fanuc Ltd Method of protecting file of numerical control
JPH03102440A (en) * 1989-09-16 1991-04-26 Hitachi Ltd File device having secrecy protecting function

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