JPS54128229A - Magnetic disk control unit containing data buffer - Google Patents

Magnetic disk control unit containing data buffer

Info

Publication number
JPS54128229A
JPS54128229A JP3638878A JP3638878A JPS54128229A JP S54128229 A JPS54128229 A JP S54128229A JP 3638878 A JP3638878 A JP 3638878A JP 3638878 A JP3638878 A JP 3638878A JP S54128229 A JPS54128229 A JP S54128229A
Authority
JP
Japan
Prior art keywords
magnetic disk
data
buffer
unit
control unit
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
JP3638878A
Other languages
Japanese (ja)
Inventor
Yuji Inoue
Etsuo Morita
Hiroyuki Takizawa
Hisashi Kimura
Mitsuaki Furukawa
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 JP3638878A priority Critical patent/JPS54128229A/en
Publication of JPS54128229A publication Critical patent/JPS54128229A/en
Pending legal-status Critical Current

Links

Landscapes

  • Memory System Of A Hierarchy Structure (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE: To shorten the access time for the magnetic disk unit by providing the buffer within the magnetic disk control unit which controls plural units of the magnetic disk unit.
CONSTITUTION: One unit of data containing the specified data is read out from magnetic disk unit 5 via CPU, and only the specified data is sent to CPU. And the data of one unit is stored in data buffer 4 within DPC (magnetic disk control unit). After this, the data, when it is read out of CPU, is read out from buffer 4. In case the data is written, the writing and editing are given to buffer 4 and then the writing is carried out to the magnetic disk through buffer 4 after separating the CPU from the magnetic disk unit.
COPYRIGHT: (C)1979,JPO&Japio
JP3638878A 1978-03-29 1978-03-29 Magnetic disk control unit containing data buffer Pending JPS54128229A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3638878A JPS54128229A (en) 1978-03-29 1978-03-29 Magnetic disk control unit containing data buffer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3638878A JPS54128229A (en) 1978-03-29 1978-03-29 Magnetic disk control unit containing data buffer

Publications (1)

Publication Number Publication Date
JPS54128229A true JPS54128229A (en) 1979-10-04

Family

ID=12468459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3638878A Pending JPS54128229A (en) 1978-03-29 1978-03-29 Magnetic disk control unit containing data buffer

Country Status (1)

Country Link
JP (1) JPS54128229A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56117378A (en) * 1980-02-20 1981-09-14 Nippon Tv Housoumou Kk Commercial message editing system
JPS5730063A (en) * 1980-07-31 1982-02-18 Hitachi Ltd File backup system
JPS5750379A (en) * 1980-09-08 1982-03-24 Hitachi Ltd Buffer storage control system
JPS5829061A (en) * 1981-08-17 1983-02-21 Fujitsu Ltd Disc cache controller
JPS5945672A (en) * 1982-09-08 1984-03-14 Matsushita Electric Ind Co Ltd Static picture disk device
JPS59178627A (en) * 1983-03-29 1984-10-09 Canon Inc Information recording and reproducing device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56117378A (en) * 1980-02-20 1981-09-14 Nippon Tv Housoumou Kk Commercial message editing system
JPH0237031B2 (en) * 1980-02-20 1990-08-22 Nippon Terebi Hosomo Kk
JPS5730063A (en) * 1980-07-31 1982-02-18 Hitachi Ltd File backup system
JPS5750379A (en) * 1980-09-08 1982-03-24 Hitachi Ltd Buffer storage control system
JPH0239813B2 (en) * 1980-09-08 1990-09-07 Hitachi Ltd
JPS5829061A (en) * 1981-08-17 1983-02-21 Fujitsu Ltd Disc cache controller
JPH0323939B2 (en) * 1981-08-17 1991-04-02 Fujitsu Ltd
JPS5945672A (en) * 1982-09-08 1984-03-14 Matsushita Electric Ind Co Ltd Static picture disk device
JPS59178627A (en) * 1983-03-29 1984-10-09 Canon Inc Information recording and reproducing device

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