JPS55143664A - Data transfer method of magnetic memory unit - Google Patents
Data transfer method of magnetic memory unitInfo
- Publication number
- JPS55143664A JPS55143664A JP5035979A JP5035979A JPS55143664A JP S55143664 A JPS55143664 A JP S55143664A JP 5035979 A JP5035979 A JP 5035979A JP 5035979 A JP5035979 A JP 5035979A JP S55143664 A JPS55143664 A JP S55143664A
- Authority
- JP
- Japan
- Prior art keywords
- transfer
- time
- register
- stored
- data
- 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
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE: To shorten the maximum time and mean time of transfer by shortening the time of access, even if it takes a long time, by dividing the transfer into two without remodeling specially the main body of a magnetic memory unit.
CONSTITUTION: When transfer is requested, a transfer start address is stored in sector register 7 and track register 8 via input-output interface 12 and under transfer-request halving control 13, the 1st transfer start address is generated being divided into two and stored in selector register 7a and track register 8a. When a head is positioned between a transfer start data position where sector coincidence circuit 6 detects the 1st transfer start address agreeing with a track outputt by sector counter 5 and the transfer end data position, data on a distance between the head position and transfer data end position are transferred and after the completion of the 1st transfer, the 2nd address is stored in registers 7a and 8a for the start of the 2nd transfer, thereby shortening the maximum transfer time and mean transfer time in case that the access time is long.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5035979A JPS55143664A (en) | 1979-04-25 | 1979-04-25 | Data transfer method of magnetic memory unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5035979A JPS55143664A (en) | 1979-04-25 | 1979-04-25 | Data transfer method of magnetic memory unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55143664A true JPS55143664A (en) | 1980-11-10 |
Family
ID=12856691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5035979A Pending JPS55143664A (en) | 1979-04-25 | 1979-04-25 | Data transfer method of magnetic memory unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55143664A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5833767A (en) * | 1981-08-21 | 1983-02-28 | Canon Inc | Disc controller |
JPS6358363U (en) * | 1986-10-01 | 1988-04-19 | ||
JPH027273A (en) * | 1988-06-24 | 1990-01-11 | Nec Corp | Disk access control system |
-
1979
- 1979-04-25 JP JP5035979A patent/JPS55143664A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5833767A (en) * | 1981-08-21 | 1983-02-28 | Canon Inc | Disc controller |
JPS6358363U (en) * | 1986-10-01 | 1988-04-19 | ||
JPH027273A (en) * | 1988-06-24 | 1990-01-11 | Nec Corp | Disk access control system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57101957A (en) | Storage control device | |
JPS57113162A (en) | High-speed external storage device | |
JPS55143664A (en) | Data transfer method of magnetic memory unit | |
JPS54146555A (en) | Data transfer system between processors | |
JPS54154944A (en) | Control system for recording device | |
JPS5447446A (en) | Magnetic disc control unit | |
JPS5362939A (en) | Common information control system | |
JPS54125930A (en) | Electronic computer | |
JPS5226131A (en) | Method of making out the operation control signal in microprograming c ontrol system computer | |
JPS5383543A (en) | Microprogram control unit | |
JPS5430742A (en) | Memory control system | |
JPS5578365A (en) | Memory control unit | |
JPS55118163A (en) | Memory device | |
JPS56100586A (en) | Ipl system in decentralized processing electronic exchanger | |
JPS522237A (en) | Data processing apparatus | |
JPS52149049A (en) | Unit price setting method and writing unit for electronic register | |
JPS5239322A (en) | Storing control device for multilayer memory unit | |
JPS51142939A (en) | Data processor | |
JPS55134443A (en) | Data processing unit | |
JPS57100550A (en) | Rotary storage controller | |
JPS5361236A (en) | Memory access control system | |
JPS5510673A (en) | Microprogram control data processor | |
JPS57100549A (en) | Magnetic disk subsystem | |
JPS52127723A (en) | Business information processing unit of taxi meter | |
JPS55138133A (en) | Data transfer unit |