JPS6432469A - Floppy disk drive device - Google Patents

Floppy disk drive device

Info

Publication number
JPS6432469A
JPS6432469A JP18851887A JP18851887A JPS6432469A JP S6432469 A JPS6432469 A JP S6432469A JP 18851887 A JP18851887 A JP 18851887A JP 18851887 A JP18851887 A JP 18851887A JP S6432469 A JPS6432469 A JP S6432469A
Authority
JP
Japan
Prior art keywords
slow
revolution
speed
stepping motor
floppy disk
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
JP18851887A
Other languages
Japanese (ja)
Inventor
Torao Ide
Yutaka Tamura
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 TEC Corp
Original Assignee
Tokyo 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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Priority to JP18851887A priority Critical patent/JPS6432469A/en
Publication of JPS6432469A publication Critical patent/JPS6432469A/en
Pending legal-status Critical Current

Links

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE:To quickly return to a constant speed rotation by providing a slow-up means for bringing a floppy disk to slow-up at the time of starting a rotation of a stepping motor, a revolution speed detecting means for detecting the speed of revolution of the disk, and a demodulating means for executing slow-up again at the time of step-out of the stepping motor. CONSTITUTION:The titled device is provided with a slow-up means for bringing a floppy disk 5 to slow-up at the time of starting a rotation of a stepping motor 6. Also, a revolution speed detection means 7 for detecting the speed of revolution of the floppy disk 5 is provided, and a demodulating means for executing slow-up again at the time of step-out of the stepping motor 6 is provided. The stopping motor causes cocking, therefore, it is used with inertia. In this state, the speed of revolution is always monitored by the revolution speed detecting means, and when the stepping motor causes step-out, the slow-up means is operated again by the demodulating means. In such a way, it can be executed quickly to return to a constant speed rotation.
JP18851887A 1987-07-28 1987-07-28 Floppy disk drive device Pending JPS6432469A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18851887A JPS6432469A (en) 1987-07-28 1987-07-28 Floppy disk drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18851887A JPS6432469A (en) 1987-07-28 1987-07-28 Floppy disk drive device

Publications (1)

Publication Number Publication Date
JPS6432469A true JPS6432469A (en) 1989-02-02

Family

ID=16225116

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18851887A Pending JPS6432469A (en) 1987-07-28 1987-07-28 Floppy disk drive device

Country Status (1)

Country Link
JP (1) JPS6432469A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06195862A (en) * 1992-12-22 1994-07-15 Teac Corp Disk device
US7085200B2 (en) 1997-02-27 2006-08-01 Matsushita Electric Industrial Co., Ltd. Stepping motor controlling method and disk apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06195862A (en) * 1992-12-22 1994-07-15 Teac Corp Disk device
US7085200B2 (en) 1997-02-27 2006-08-01 Matsushita Electric Industrial Co., Ltd. Stepping motor controlling method and disk apparatus
US7106668B2 (en) 1997-02-27 2006-09-12 Matsushita Electric Industrial Co., Ltd. Disk drive apparatus

Similar Documents

Publication Publication Date Title
JPS55125052A (en) Motor equipment utilizing ultrasonic vibration
JPS5644133A (en) Auto reverse unit with program searching mechanism
JPS6432469A (en) Floppy disk drive device
JPS5229917A (en) Detection circuit for position of rotor in commutatorless motor
JPS56144966A (en) Typewriting apparatus
JPS5374937A (en) Apparatus for automatically shooting pachinco balls by approach switch
JPS54113306A (en) Rotating condition detector
JPS56138469A (en) Motor device utilizing supersonic vibration
JPS54113022A (en) Start position detector for stepping motor
JPS5641777A (en) Controller for fixed location of motor
JPS5653589A (en) Main shaft home position stop control circuit
JPS54157431A (en) Shutter for pickup device
JPS55105235A (en) Motor drive unit of camera
JPS5314307A (en) Speed control device for dc motor
DK544084A (en) CENTRIFUGAL POWER MECHANISM TO LIMIT THE SPEED OF SPEED OF A WINDOW ENGINE PROPELLER SHAFT, AND BODIES TO STOP AND BLOCK THE PROPELLER ASSOCIATED WITH SUCH A MECHANISM
JPS6480869A (en) Detecting mechanism for rotating speed of disk
JPS5727470A (en) Magnetic recorder and reproducer
JPS5637861A (en) Pushing-up unit for record disk
JPS5743555A (en) Change-over switch
JPS54113307A (en) Rotating condition detector
JPS57182649A (en) Driving device of centrifugal painting device
JPS5234310A (en) Dc motor control
JPS6435761A (en) Video reproducing speed controller
JPS5578850A (en) Rolling contact mechanism
JPS5377551A (en) Position detecting mechanism inspecting apparatus