JPS54128229A - Magnetic disk control unit containing data buffer - Google Patents
Magnetic disk control unit containing data bufferInfo
- 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
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
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)
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 |
-
1978
- 1978-03-29 JP JP3638878A patent/JPS54128229A/en active Pending
Cited By (9)
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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