JPS5467406A - Positioning controller - Google Patents
Positioning controllerInfo
- Publication number
- JPS5467406A JPS5467406A JP13449477A JP13449477A JPS5467406A JP S5467406 A JPS5467406 A JP S5467406A JP 13449477 A JP13449477 A JP 13449477A JP 13449477 A JP13449477 A JP 13449477A JP S5467406 A JPS5467406 A JP S5467406A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- drive
- head
- disc
- position error
- 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 The Head To Find And Align With The Track (AREA)
- Feedback Control In General (AREA)
- Control Of Position Or Direction (AREA)
Abstract
PURPOSE: To effect a highly accurate positioning operation thereby to increase the density of a track by making use of the fact that there a preset regularity in the vibrations of the track.
CONSTITUTION: Drive means 30 is supplied with drive signals 103 which are produced by adding such position error signals 102 as are produced by supplying the output pulses containing the position error signals from a head 20 to a position error demodulator 21 to the delay output of signal delay means 41 as shown at 22. Signal delay means 40 delays the signals 103 a time substantially equal to the period of one rotation of a disc. In order that the signal delay time may be equal to the rotating period of a disc 10, the pulses 101 are shaped at 43 and then frequency divided by a clock generator 42 thereby to produce clocks 105 synchronized with the disc rotations. The drive means 30 for moving te head 20 in response to the drive signals 30 is composed of a phase gain compensator 31 and a motor 33 for amplifying the output of the compensator 31, as shown at 32, to drive the head 20.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13449477A JPS6057085B2 (en) | 1977-11-08 | 1977-11-08 | positioning control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13449477A JPS6057085B2 (en) | 1977-11-08 | 1977-11-08 | positioning control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5467406A true JPS5467406A (en) | 1979-05-30 |
JPS6057085B2 JPS6057085B2 (en) | 1985-12-13 |
Family
ID=15129624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13449477A Expired JPS6057085B2 (en) | 1977-11-08 | 1977-11-08 | positioning control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6057085B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60236175A (en) * | 1984-05-08 | 1985-11-22 | Nec Corp | Track access device of discoid recording carrier |
JPH03152608A (en) * | 1989-11-08 | 1991-06-28 | Okuma Mach Works Ltd | Position controller for machine tool |
WO2001043125A3 (en) * | 1999-12-10 | 2001-11-29 | Koninkl Philips Electronics Nv | Device for scanning a rotating information carrier |
EP1367586A1 (en) * | 2001-02-07 | 2003-12-03 | NEC Corporation | Positioning control device and positioning control method |
WO2007046054A2 (en) * | 2005-10-19 | 2007-04-26 | Koninklijke Philips Electronics N.V. | A control method with single period learning for an optical drive |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7136339B2 (en) | 2001-05-30 | 2006-11-14 | Nec Corporation | Positioning control apparatus and method capable of reducing relative position error without increasing gain and frequency band of transfer characteristics of control system |
-
1977
- 1977-11-08 JP JP13449477A patent/JPS6057085B2/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60236175A (en) * | 1984-05-08 | 1985-11-22 | Nec Corp | Track access device of discoid recording carrier |
JPH0580076B2 (en) * | 1984-05-08 | 1993-11-05 | Nippon Electric Co | |
JPH03152608A (en) * | 1989-11-08 | 1991-06-28 | Okuma Mach Works Ltd | Position controller for machine tool |
WO2001043125A3 (en) * | 1999-12-10 | 2001-11-29 | Koninkl Philips Electronics Nv | Device for scanning a rotating information carrier |
US6683833B2 (en) | 1999-12-10 | 2004-01-27 | Koninklijke Philips Electronics N.V. | Device for scanning a rotating information carrier |
EP1367586A1 (en) * | 2001-02-07 | 2003-12-03 | NEC Corporation | Positioning control device and positioning control method |
EP1367586A4 (en) * | 2001-02-07 | 2007-10-24 | Nec Corp | Positioning control device and positioning control method |
WO2007046054A2 (en) * | 2005-10-19 | 2007-04-26 | Koninklijke Philips Electronics N.V. | A control method with single period learning for an optical drive |
WO2007046054A3 (en) * | 2005-10-19 | 2007-07-12 | Koninkl Philips Electronics Nv | A control method with single period learning for an optical drive |
Also Published As
Publication number | Publication date |
---|---|
JPS6057085B2 (en) | 1985-12-13 |
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