JPS55129973A - Magnetic head driving control unit of magnetic disc device - Google Patents
Magnetic head driving control unit of magnetic disc deviceInfo
- Publication number
- JPS55129973A JPS55129973A JP3490579A JP3490579A JPS55129973A JP S55129973 A JPS55129973 A JP S55129973A JP 3490579 A JP3490579 A JP 3490579A JP 3490579 A JP3490579 A JP 3490579A JP S55129973 A JPS55129973 A JP S55129973A
- Authority
- JP
- Japan
- Prior art keywords
- movement
- head driving
- circuit
- magnetic head
- speed
- 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.)
- Granted
Links
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
Abstract
PURPOSE: To make it possible to connect the closed loop servo-system high-speed head driving unit to the interface for upper rank devices of a system where movement information is sent with the number of pulses, by starting movement of the magnetic head after storing movement information.
CONSTITUTION: Magnetic head movement direction indication signal A from disc control unit 10 is applied to movement mode instruction circuit 1, and movement information pulses B whose number corresponds to the number of tracks for movement are counted by register 2 and are stored. Completion of this storage is detected in circuit 1 by applied signal B, and after storage completion, movement mode signal D and movement start signal C are generated from circuit 1 to perform high-speed head driving of the closed loop servo-system dependent upon position signal detection circuit 9, movement profile set circuit 5, a register, magnetic head driving control circuit 3, magnetic head driving mechanism 4, servo head 8, etc., and thus, the closed loop servo-system high-speed head driving unit can be connected to the interface for upper rank devices of a system where movement information making stepping motor-system low-speed driving possible is sent with pulses.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3490579A JPS55129973A (en) | 1979-03-24 | 1979-03-24 | Magnetic head driving control unit of magnetic disc device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3490579A JPS55129973A (en) | 1979-03-24 | 1979-03-24 | Magnetic head driving control unit of magnetic disc device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55129973A true JPS55129973A (en) | 1980-10-08 |
JPH0121551B2 JPH0121551B2 (en) | 1989-04-21 |
Family
ID=12427194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3490579A Granted JPS55129973A (en) | 1979-03-24 | 1979-03-24 | Magnetic head driving control unit of magnetic disc device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55129973A (en) |
-
1979
- 1979-03-24 JP JP3490579A patent/JPS55129973A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0121551B2 (en) | 1989-04-21 |
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