JPS6439673A - Information memory device - Google Patents
Information memory deviceInfo
- 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
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.
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)
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 |
-
1987
- 1987-08-05 JP JP19684287A patent/JP2624485B2/en not_active Expired - Lifetime
Cited By (2)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080411 Year of fee payment: 11 |