JPS6430067A - Disk driver - Google Patents

Disk driver

Info

Publication number
JPS6430067A
JPS6430067A JP18595587A JP18595587A JPS6430067A JP S6430067 A JPS6430067 A JP S6430067A JP 18595587 A JP18595587 A JP 18595587A JP 18595587 A JP18595587 A JP 18595587A JP S6430067 A JPS6430067 A JP S6430067A
Authority
JP
Japan
Prior art keywords
disks
disk
format
accordance
frequency
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
Application number
JP18595587A
Other languages
Japanese (ja)
Other versions
JP2637108B2 (en
Inventor
Teruo Furukawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62185955A priority Critical patent/JP2637108B2/en
Publication of JPS6430067A publication Critical patent/JPS6430067A/en
Application granted granted Critical
Publication of JP2637108B2 publication Critical patent/JP2637108B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To improve the interchangeability and reliability of disks by controlling the rotational frequency of a disk motor driven by a clock signal and always fixing the recording/reproducing data transfer rate of plural disks to record and reproduce data. CONSTITUTION:A microprocessor 12 decides whether a format is 1K or 512 in accordance with control information and switches the frequency dividing ratio of a frequency divider 26 of a crystal oscillator 28 in accordance with each format. The output of the frequency divider 26 is applied to a disk motor control circuit 25 as a reference signal to control the rotational frequency of the disk motor 24 in accordance with the format of the disk. Thereby, the driver for recording/reproducing plural disks having different recording density on disk media at the same driving rate can control the rotational frequency of the disks only by adding the small number of hardwares without changing a clock system and a signal transfer rate. Consequently, the interchangeability and reliability of disks can be improved.
JP62185955A 1987-07-24 1987-07-24 Disk drive device Expired - Lifetime JP2637108B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62185955A JP2637108B2 (en) 1987-07-24 1987-07-24 Disk drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62185955A JP2637108B2 (en) 1987-07-24 1987-07-24 Disk drive device

Publications (2)

Publication Number Publication Date
JPS6430067A true JPS6430067A (en) 1989-01-31
JP2637108B2 JP2637108B2 (en) 1997-08-06

Family

ID=16179800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62185955A Expired - Lifetime JP2637108B2 (en) 1987-07-24 1987-07-24 Disk drive device

Country Status (1)

Country Link
JP (1) JP2637108B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0334154A (en) * 1989-06-29 1991-02-14 Fujitsu Ltd Disk device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60237679A (en) * 1984-05-11 1985-11-26 Hitachi Ltd Floppy disk device
JPS61134926A (en) * 1984-12-05 1986-06-23 Canon Inc Optical information recording and reproducing device
JPS6267771A (en) * 1985-09-20 1987-03-27 Olympus Optical Co Ltd Discriminating device for recording media
JPS6282503A (en) * 1985-10-07 1987-04-16 Teac Co Information recording disk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60237679A (en) * 1984-05-11 1985-11-26 Hitachi Ltd Floppy disk device
JPS61134926A (en) * 1984-12-05 1986-06-23 Canon Inc Optical information recording and reproducing device
JPS6267771A (en) * 1985-09-20 1987-03-27 Olympus Optical Co Ltd Discriminating device for recording media
JPS6282503A (en) * 1985-10-07 1987-04-16 Teac Co Information recording disk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0334154A (en) * 1989-06-29 1991-02-14 Fujitsu Ltd Disk device

Also Published As

Publication number Publication date
JP2637108B2 (en) 1997-08-06

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