JPS5622259A - Magnetic disc unit - Google Patents
Magnetic disc unitInfo
- Publication number
- JPS5622259A JPS5622259A JP9594279A JP9594279A JPS5622259A JP S5622259 A JPS5622259 A JP S5622259A JP 9594279 A JP9594279 A JP 9594279A JP 9594279 A JP9594279 A JP 9594279A JP S5622259 A JPS5622259 A JP S5622259A
- Authority
- JP
- Japan
- Prior art keywords
- disc
- servo
- circuit
- cartridge
- synchronizing
- 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
- Moving Of Head For Track Selection And Changing (AREA)
- Control Of Position Or Direction (AREA)
Abstract
PURPOSE: To simplify the circuit constitution, by using the clock signal of the servo decoder of fixed disc with the servo decoder of the cartridge disc in common, in the magnetic disc unit providing the fixed disc and the cartridge disc which are turned with the same drive mechanism.
CONSTITUTION: The fixed disc 12 and the cartridge disc 13 are turned with the same disc drive unit 11. The servo information signal SJ1 from the servo head 151 of the fixed disc 13 is input to the servo decoder 231 of the fixed disc, and the position signal CHI1 from the servo decoding circuit 201 is fed to the magnetic head drive circuit 221 via the synchronizing signal SYN1 from the synchronizing separation circuit 171 and the clock signal from the synchronizing oscillator 18, and the output controls the magnetic head drive mechanism 141. On the other hand, although the magnetic head drive mechanism 142 of the cartridge disc 13 is similarly controlled, since the synchronizing oscillator 18 is used in common, the circuit constitution can be simpler.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9594279A JPS5622259A (en) | 1979-07-27 | 1979-07-27 | Magnetic disc unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9594279A JPS5622259A (en) | 1979-07-27 | 1979-07-27 | Magnetic disc unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5622259A true JPS5622259A (en) | 1981-03-02 |
Family
ID=14151313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9594279A Pending JPS5622259A (en) | 1979-07-27 | 1979-07-27 | Magnetic disc unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5622259A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01177726A (en) * | 1988-01-08 | 1989-07-14 | Canon Inc | Picture communication equipment |
-
1979
- 1979-07-27 JP JP9594279A patent/JPS5622259A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01177726A (en) * | 1988-01-08 | 1989-07-14 | Canon Inc | Picture communication equipment |
JP2793807B2 (en) * | 1988-01-08 | 1998-09-03 | キヤノン株式会社 | Image communication device |
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