JPS6460883A - Backup system for draw type optical disk - Google Patents

Backup system for draw type optical disk

Info

Publication number
JPS6460883A
JPS6460883A JP62217527A JP21752787A JPS6460883A JP S6460883 A JPS6460883 A JP S6460883A JP 62217527 A JP62217527 A JP 62217527A JP 21752787 A JP21752787 A JP 21752787A JP S6460883 A JPS6460883 A JP S6460883A
Authority
JP
Japan
Prior art keywords
optical disk
file
type optical
backup system
draw type
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
JP62217527A
Other languages
Japanese (ja)
Inventor
Jinichi Nakamura
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP62217527A priority Critical patent/JPS6460883A/en
Publication of JPS6460883A publication Critical patent/JPS6460883A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent the area of a file from being used wastefully and to shorten a processing time, by only producing the copy of an adder or updated part. CONSTITUTION:The file A of an original optical disk a is compared with the file A' of an optical disk A' for saving at the time of copying the optical disk A' for saving to recover the optical disk A, and a program is started up in a processor A so that only the added or the updated part can be copied based on a compared result, then, the file A is copied on the file A'. In such a way, it is possible to prevent the area of the file from being used wastefully, and also, to shorten the processing time.
JP62217527A 1987-08-31 1987-08-31 Backup system for draw type optical disk Pending JPS6460883A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62217527A JPS6460883A (en) 1987-08-31 1987-08-31 Backup system for draw type optical disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62217527A JPS6460883A (en) 1987-08-31 1987-08-31 Backup system for draw type optical disk

Publications (1)

Publication Number Publication Date
JPS6460883A true JPS6460883A (en) 1989-03-07

Family

ID=16705641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62217527A Pending JPS6460883A (en) 1987-08-31 1987-08-31 Backup system for draw type optical disk

Country Status (1)

Country Link
JP (1) JPS6460883A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290170A (en) * 1988-05-16 1989-11-22 Casio Comput Co Ltd Data backup device for draw type optical disk
JPH03129552A (en) * 1989-06-30 1991-06-03 Digital Equip Corp <Dec> Method and device for transferring data in digital processing system
JPH03259324A (en) * 1990-03-08 1991-11-19 Nec Corp Copying system for unloadable medium
JPH09297981A (en) * 1996-05-01 1997-11-18 C S K Sogo Kenkyusho:Kk Method for writing draw type optical disk recording medium, and software developing system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62273688A (en) * 1986-05-21 1987-11-27 Matsushita Graphic Commun Syst Inc Copying method in picture information storage retrieve device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62273688A (en) * 1986-05-21 1987-11-27 Matsushita Graphic Commun Syst Inc Copying method in picture information storage retrieve device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01290170A (en) * 1988-05-16 1989-11-22 Casio Comput Co Ltd Data backup device for draw type optical disk
JPH03129552A (en) * 1989-06-30 1991-06-03 Digital Equip Corp <Dec> Method and device for transferring data in digital processing system
JPH03259324A (en) * 1990-03-08 1991-11-19 Nec Corp Copying system for unloadable medium
JPH09297981A (en) * 1996-05-01 1997-11-18 C S K Sogo Kenkyusho:Kk Method for writing draw type optical disk recording medium, and software developing system

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