JPS6439673A - Information memory device - Google Patents

Information memory device

Info

Publication number
JPS6439673A
JPS6439673A JP62196842A JP19684287A JPS6439673A JP S6439673 A JPS6439673 A JP S6439673A JP 62196842 A JP62196842 A JP 62196842A JP 19684287 A JP19684287 A JP 19684287A JP S6439673 A JPS6439673 A JP S6439673A
Authority
JP
Japan
Prior art keywords
head
circuit
detector
output
control loop
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
JP62196842A
Other languages
Japanese (ja)
Other versions
JP2624485B2 (en
Inventor
Masaharu Ogawa
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 JP19684287A priority Critical patent/JP2624485B2/en
Priority to KR1019870013369A priority patent/KR910003458B1/en
Priority to EP90121579A priority patent/EP0424978B1/en
Priority to DE90121773T priority patent/DE3788883T2/en
Priority to CA000553362A priority patent/CA1305792C/en
Priority to EP90121773A priority patent/EP0424980B1/en
Priority to DE8787310615T priority patent/DE3778841D1/en
Priority to EP87310615A priority patent/EP0270357B1/en
Priority to DE3789457T priority patent/DE3789457T2/en
Publication of JPS6439673A publication Critical patent/JPS6439673A/en
Priority to KR1019910004834A priority patent/KR910003455B1/en
Priority to US08/159,477 priority patent/US5398221A/en
Application granted granted Critical
Publication of JP2624485B2 publication Critical patent/JP2624485B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Moving Of Head For Track Selection And Changing (AREA)

Abstract

PURPOSE:To prevent collision to a stopper, etc., from being generated, by providing a head position detector to detect the positioning of a head, and a moving means to move the head to a position decided with respect to the position of the head position detector. CONSTITUTION:When the light of the head position detector 1 is shielded by a douser 3 in a case where an optical head 104 jumps out to an inner peripheral side, a position control loop ON command is outputted from a position control loop ON/OFF command circuit 5. The output of the detector is selected by an input switching circuit 6, and the output is transmitted to a control mode switching circuit 40 via a stabilization compensation circuit 7 represented by a phase lead compensation circuit, etc. The circuit 40 interrupts seek control and tracking control simultaneously with the turning ON of a position control loop at the circuit 5, and transmits the output of the circuit 7 to a head actuator driving circuit 50. A head actuator 8 is driven so as to move and stop the optical head 104 to the position where the output voltage of the detector 1 coincides with a prescribed reference voltage. The same operation is performed when the optical head jumps out to an outer peripheral side.
JP19684287A 1986-12-02 1987-08-05 Information processing device Expired - Lifetime JP2624485B2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP19684287A JP2624485B2 (en) 1987-08-05 1987-08-05 Information processing device
KR1019870013369A KR910003458B1 (en) 1986-12-02 1987-11-26 Operating apparatus of optical disk
EP87310615A EP0270357B1 (en) 1986-12-02 1987-12-02 Optical disk drive device and information storage device
CA000553362A CA1305792C (en) 1986-12-02 1987-12-02 Optical disk drive device and information storage device
EP90121773A EP0424980B1 (en) 1986-12-02 1987-12-02 Optical disk drive device and information storage device
DE8787310615T DE3778841D1 (en) 1986-12-02 1987-12-02 DRIVING DEVICE FOR OPTICAL PLATES AND DEVICE FOR STORING INFORMATION.
EP90121579A EP0424978B1 (en) 1986-12-02 1987-12-02 Optical disk drive device and information storage device
DE3789457T DE3789457T2 (en) 1986-12-02 1987-12-02 Optical disk drive device and optical information recording device.
DE90121773T DE3788883T2 (en) 1986-12-02 1987-12-02 Optical disk operating device and information storage device.
KR1019910004834A KR910003455B1 (en) 1987-06-29 1991-03-27 Information-storage apparatus
US08/159,477 US5398221A (en) 1986-12-02 1993-11-30 Information storage device capable of oepration in a velocity control mode and a tracking control mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19684287A JP2624485B2 (en) 1987-08-05 1987-08-05 Information processing device

Publications (2)

Publication Number Publication Date
JPS6439673A true JPS6439673A (en) 1989-02-09
JP2624485B2 JP2624485B2 (en) 1997-06-25

Family

ID=16364568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19684287A Expired - Lifetime JP2624485B2 (en) 1986-12-02 1987-08-05 Information processing device

Country Status (1)

Country Link
JP (1) JP2624485B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01220187A (en) * 1988-02-29 1989-09-01 Canon Inc Information recording and reproducing device
JPH03130974A (en) * 1989-07-07 1991-06-04 Teac Corp Disk device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01220187A (en) * 1988-02-29 1989-09-01 Canon Inc Information recording and reproducing device
JPH03130974A (en) * 1989-07-07 1991-06-04 Teac Corp Disk device

Also Published As

Publication number Publication date
JP2624485B2 (en) 1997-06-25

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