JP4775866B2 - 繰り返し制御装置、及び光ディスク装置 - Google Patents
繰り返し制御装置、及び光ディスク装置 Download PDFInfo
- Publication number
- JP4775866B2 JP4775866B2 JP2009111355A JP2009111355A JP4775866B2 JP 4775866 B2 JP4775866 B2 JP 4775866B2 JP 2009111355 A JP2009111355 A JP 2009111355A JP 2009111355 A JP2009111355 A JP 2009111355A JP 4775866 B2 JP4775866 B2 JP 4775866B2
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- Japan
- Prior art keywords
- memory
- signal
- filter
- frequency
- output
- 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.)
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
- G11B7/0953—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
- G11B7/0956—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc
Landscapes
- Optical Recording Or Reproduction (AREA)
Description
次に、この従来の光ディスク装置の動作について説明する。
加算器0からトラック位置に対する光ビーム焦点の位置誤差を示すサーボエラー信号が積分項演算部41cに入力されると、積分項演算部41cは、メモリ制御部8により選択されているメモリセルを用いて積分処理を行う。
1、41 サーボフィルタ
2 加算器
3 DAコンバータ
4 ドライバ
5 ピックアップ
6 フィルタ
7 メモリ
8 メモリ制御部
9 回転角検出部
10 ゲイン
11、20 繰り返し制御装置
21、31 ハイパスフィルタ
22、 32 ローパスフィルタ
23、33 加算器
24、34 フィードバックゲイン
41a 微分項演算部
41b 比例項演算部
41c 積分項演算部
41d、41e 加算器
Claims (2)
- 駆動信号の動作周波数と同じ、あるいは、その分周周波数のクロック信号を用いて演算処理を行う、PIDサーボフィルターの積分項演算部において、
サーボエラー信号が入力される加算部と、
前記加算部からの出力信号を順次更新して前記加算部に入力するフィードバック信号系を備え、
前記フィードバック信号系は、
ディスク一回転分の信号情報を複数のメモリ領域に分割して格納するメモリと、
前記メモリからの出力に対して1以下の値を乗じて前記加算部に入力するゲイン要素とからなり、
入力されたサーボエラー信号に対して積分演算処理を行う際に、前記メモリを入力信号の遅延要素として用いて積分演算処理を行い、さらに、積分演算処理の周波数は前記複数のメモリ領域を切り換える周波数よりも高い、
ことを特徴とする繰り返し制御装置。 - 光ディスクの記録又は再生を行う光ディスク装置において、
請求項1に記載の繰り返し制御装置を搭載した、
ことを特徴とする光ディスク装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009111355A JP4775866B2 (ja) | 2004-01-16 | 2009-04-30 | 繰り返し制御装置、及び光ディスク装置 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004008917 | 2004-01-16 | ||
JP2004008917 | 2004-01-16 | ||
JP2009111355A JP4775866B2 (ja) | 2004-01-16 | 2009-04-30 | 繰り返し制御装置、及び光ディスク装置 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005517063A Division JPWO2005069285A1 (ja) | 2004-01-16 | 2005-01-14 | 繰り返し制御装置、及び光ディスク装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009170102A JP2009170102A (ja) | 2009-07-30 |
JP4775866B2 true JP4775866B2 (ja) | 2011-09-21 |
Family
ID=34792252
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005517063A Pending JPWO2005069285A1 (ja) | 2004-01-16 | 2005-01-14 | 繰り返し制御装置、及び光ディスク装置 |
JP2009111355A Expired - Fee Related JP4775866B2 (ja) | 2004-01-16 | 2009-04-30 | 繰り返し制御装置、及び光ディスク装置 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005517063A Pending JPWO2005069285A1 (ja) | 2004-01-16 | 2005-01-14 | 繰り返し制御装置、及び光ディスク装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7649815B2 (ja) |
JP (2) | JPWO2005069285A1 (ja) |
CN (1) | CN1910668B (ja) |
WO (1) | WO2005069285A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007233732A (ja) * | 2006-03-01 | 2007-09-13 | Ricoh Co Ltd | サーボ制御装置 |
JP5221735B2 (ja) | 2011-10-27 | 2013-06-26 | ファナック株式会社 | 不感帯処理部を備えた電動機の制御装置 |
JPWO2014155573A1 (ja) * | 2013-03-27 | 2017-02-16 | 株式会社東芝 | 電子機器、記録方法及びプログラム |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2605311B2 (ja) * | 1987-11-27 | 1997-04-30 | ソニー株式会社 | 光ディスク装置 |
JP2702577B2 (ja) * | 1989-12-22 | 1998-01-21 | コニカ株式会社 | 光ディスクドライブの偏心補正方法 |
JPH07334931A (ja) * | 1994-06-10 | 1995-12-22 | Pioneer Electron Corp | クロストーク除去装置 |
JP2762961B2 (ja) * | 1995-07-06 | 1998-06-11 | 株式会社寺岡精工 | ストレッチフィルム包装機 |
JP3536455B2 (ja) | 1995-08-04 | 2004-06-07 | 三菱電機株式会社 | 繰り返し補償器およびこの繰り返し補償器を備えたディスク装置 |
JPH10134380A (ja) * | 1996-10-31 | 1998-05-22 | Matsushita Electric Ind Co Ltd | トラッキング制御装置 |
CN2371641Y (zh) * | 1999-04-29 | 2000-03-29 | 光德电子股份有限公司 | 具有错误校正电路的影音光碟播放机 |
TW509926B (en) * | 1999-12-10 | 2002-11-11 | Koninkl Philips Electronics Nv | Device for scanning a rotating information carrier |
JP2001307341A (ja) * | 2000-04-24 | 2001-11-02 | Matsushita Electric Ind Co Ltd | 光ディスク装置 |
-
2005
- 2005-01-14 WO PCT/JP2005/000339 patent/WO2005069285A1/ja active Application Filing
- 2005-01-14 US US10/586,355 patent/US7649815B2/en not_active Expired - Fee Related
- 2005-01-14 JP JP2005517063A patent/JPWO2005069285A1/ja active Pending
- 2005-01-14 CN CN2005800024274A patent/CN1910668B/zh not_active Expired - Fee Related
-
2009
- 2009-04-30 JP JP2009111355A patent/JP4775866B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7649815B2 (en) | 2010-01-19 |
JPWO2005069285A1 (ja) | 2007-12-27 |
JP2009170102A (ja) | 2009-07-30 |
CN1910668B (zh) | 2012-05-30 |
WO2005069285A1 (ja) | 2005-07-28 |
CN1910668A (zh) | 2007-02-07 |
US20070159939A1 (en) | 2007-07-12 |
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