JPS5622259A - Magnetic disc unit - Google Patents

Magnetic disc unit

Info

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
Application number
JP9594279A
Other languages
Japanese (ja)
Inventor
Hiromi Hamaoka
Toshiaki Hattori
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9594279A priority Critical patent/JPS5622259A/en
Publication of JPS5622259A publication Critical patent/JPS5622259A/en
Pending legal-status Critical Current

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
JP9594279A 1979-07-27 1979-07-27 Magnetic disc unit Pending JPS5622259A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01177726A (en) * 1988-01-08 1989-07-14 Canon Inc Picture communication equipment

Cited By (2)

* Cited by examiner, † Cited by third party
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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