JPS6469278A - Method of stopping rotor - Google Patents

Method of stopping rotor

Info

Publication number
JPS6469278A
JPS6469278A JP22338187A JP22338187A JPS6469278A JP S6469278 A JPS6469278 A JP S6469278A JP 22338187 A JP22338187 A JP 22338187A JP 22338187 A JP22338187 A JP 22338187A JP S6469278 A JPS6469278 A JP S6469278A
Authority
JP
Japan
Prior art keywords
applying
voltage
rotor
motor
time
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
JP22338187A
Other languages
Japanese (ja)
Inventor
Hitoshi Ogata
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP22338187A priority Critical patent/JPS6469278A/en
Publication of JPS6469278A publication Critical patent/JPS6469278A/en
Pending legal-status Critical Current

Links

Landscapes

  • Rotational Drive Of Disk (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

PURPOSE:To stop a rotor surely by calculating a time required for braking when the rotor is braked by applying a braking voltage thereto, and applying the voltage only for this time. CONSTITUTION:After a signal read by a pickup 1 from a disk 2 is binarized by a waveform shaper 3, it is fed to a synchronous detector 4 to detect a synchronizing pulse. This pulse is detected by a clock generated by a PLL circuit 5, applied to a motor servo circuit 6 to control the rotation of a spindle motor 7. The binarized signal becomes a reproduction signal through a digital signal processor 8 and a D/A converter 9. Further, a microcomputer 12 and an up counter 13 as a timer are provided. A period until the rotating speed becomes 1/3 of an initial speed is measured, an applying time of a reverse rotary drive voltage is calculated from a deceleration ratio, etc., and applied to the motor 7. Thus, the rotation of the disk can be stopped rapidly and effectively.
JP22338187A 1987-09-07 1987-09-07 Method of stopping rotor Pending JPS6469278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22338187A JPS6469278A (en) 1987-09-07 1987-09-07 Method of stopping rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22338187A JPS6469278A (en) 1987-09-07 1987-09-07 Method of stopping rotor

Publications (1)

Publication Number Publication Date
JPS6469278A true JPS6469278A (en) 1989-03-15

Family

ID=16797254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22338187A Pending JPS6469278A (en) 1987-09-07 1987-09-07 Method of stopping rotor

Country Status (1)

Country Link
JP (1) JPS6469278A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6472358A (en) * 1987-09-12 1989-03-17 Sony Corp Disk driving device
JPH0250866U (en) * 1988-09-29 1990-04-10
JPH0340653U (en) * 1989-08-30 1991-04-18
JPH0491686A (en) * 1990-08-06 1992-03-25 Mitsubishi Electric Corp Motor controller
JPH05205389A (en) * 1992-01-29 1993-08-13 Sanyo Electric Co Ltd Stoppage controller for motor
WO2001054264A1 (en) * 2000-01-19 2001-07-26 Toshiba Video Products Japan Co., Ltd. Motor intermittent drive controller
JP2003178513A (en) * 2001-12-11 2003-06-27 Sanyo Electric Co Ltd Optical disk reproducing device
JP2004158104A (en) * 2002-11-06 2004-06-03 Funai Electric Co Ltd Optical disk playback device
EP1441338A2 (en) * 2003-01-24 2004-07-28 Lg Electronics Inc. Method and apparatus for stopping the rotation of a disc in disc device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746687A (en) * 1980-09-02 1982-03-17 Fujitsu Ltd Stop controlling method for dc motor
JPS61172270A (en) * 1985-01-26 1986-08-02 Fuji Photo Film Co Ltd Recording or reproducing device
JPS6135596B2 (en) * 1977-03-16 1986-08-13 Omron Tateisi Electronics Co
JPS61199482A (en) * 1985-02-28 1986-09-03 Pioneer Electronic Corp Motor controller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6135596B2 (en) * 1977-03-16 1986-08-13 Omron Tateisi Electronics Co
JPS5746687A (en) * 1980-09-02 1982-03-17 Fujitsu Ltd Stop controlling method for dc motor
JPS61172270A (en) * 1985-01-26 1986-08-02 Fuji Photo Film Co Ltd Recording or reproducing device
JPS61199482A (en) * 1985-02-28 1986-09-03 Pioneer Electronic Corp Motor controller

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6472358A (en) * 1987-09-12 1989-03-17 Sony Corp Disk driving device
JPH0250866U (en) * 1988-09-29 1990-04-10
JPH0340653U (en) * 1989-08-30 1991-04-18
JPH0491686A (en) * 1990-08-06 1992-03-25 Mitsubishi Electric Corp Motor controller
JPH05205389A (en) * 1992-01-29 1993-08-13 Sanyo Electric Co Ltd Stoppage controller for motor
WO2001054264A1 (en) * 2000-01-19 2001-07-26 Toshiba Video Products Japan Co., Ltd. Motor intermittent drive controller
US7157871B2 (en) 2000-01-19 2007-01-02 Kabushiki Kaisha Toshiba Intermittent drive control apparatus of motor
JP2003178513A (en) * 2001-12-11 2003-06-27 Sanyo Electric Co Ltd Optical disk reproducing device
JP2004158104A (en) * 2002-11-06 2004-06-03 Funai Electric Co Ltd Optical disk playback device
EP1441338A2 (en) * 2003-01-24 2004-07-28 Lg Electronics Inc. Method and apparatus for stopping the rotation of a disc in disc device

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