JP4288181B2 - マルチトラック光ディスク読取装置 - Google Patents
マルチトラック光ディスク読取装置 Download PDFInfo
- Publication number
- JP4288181B2 JP4288181B2 JP2003585079A JP2003585079A JP4288181B2 JP 4288181 B2 JP4288181 B2 JP 4288181B2 JP 2003585079 A JP2003585079 A JP 2003585079A JP 2003585079 A JP2003585079 A JP 2003585079A JP 4288181 B2 JP4288181 B2 JP 4288181B2
- Authority
- JP
- Japan
- Prior art keywords
- tracks
- fifo
- disk reader
- data
- track
- 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.)
- Expired - Fee Related
Links
Images
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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Description
Claims (5)
- 光ディスクの複数のトラックからデータを読み取り各トラックからのデータをそれぞれのデータストリームにて出力するマルチトラック光ピックアップと、前記それぞれのデータストリームからのデータを一時的に記憶するそれぞれの先入れ先出し型(FIFO)バッファが使用されるトラックの数に従って動的に規定されることの可能なメモリバンクとを有し、前記それぞれの先入れ先出し型バッファの大きさが前記使用されるトラックの数により設定される、マルチトラック光ディスク読取装置。
- 請求項1に記載のディスク読取装置であって、前記ピックアップにより読み取られることの可能なトラックの最大数より少ないトラックを用いることができる、ディスク読取装置。
- 請求項2に記載のディスク読取装置であって、前記ピックアップにより読み取られることのできるトラックの最大数より少ないトラックが用いられているとき、前記FIFOバッファの少なくとも1つは、前記ピックアップにより読み取られることの可能なトラックの最大数で分割されるメモリバンクに規定されることのできるFIFOメモリ全体よりも大なるサイズを有するよう規定される、ディスク読取装置。
- 請求項2又は3に記載のディスク読取装置であって、前記ピックアップにより読み取られることのできるトラックの最大数より少ないトラックが用いられているとき、用いられるトラックのデータストリームのFIFOバッファのみが規定される、ディスク読取装置。
- 請求項4に記載のディスク読取装置であって、規定されるFIFOバッファの各々は、用いられているトラックの数で分割されるメモリバンクにおいて規定可能なFIFOメモリ全体に等しいサイズを有する、ディスク読取装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0208834.2A GB0208834D0 (en) | 2002-04-18 | 2002-04-18 | Multitrack optical disc reader |
PCT/IB2003/001348 WO2003088232A2 (en) | 2002-04-18 | 2003-04-03 | Multitrack optical disc reader |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005523543A JP2005523543A (ja) | 2005-08-04 |
JP4288181B2 true JP4288181B2 (ja) | 2009-07-01 |
Family
ID=9935033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003585079A Expired - Fee Related JP4288181B2 (ja) | 2002-04-18 | 2003-04-03 | マルチトラック光ディスク読取装置 |
Country Status (9)
Country | Link |
---|---|
US (1) | US7539118B2 (ja) |
EP (1) | EP1500093B1 (ja) |
JP (1) | JP4288181B2 (ja) |
KR (1) | KR20040102105A (ja) |
CN (1) | CN100382174C (ja) |
AU (1) | AU2003214543A1 (ja) |
GB (1) | GB0208834D0 (ja) |
TW (1) | TWI278849B (ja) |
WO (1) | WO2003088232A2 (ja) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5793549A (en) * | 1995-11-15 | 1998-08-11 | Zen Research N.V. | Methods and apparatus for synchronizing read out of data from multiple tracks of an optical storage device |
US5907526A (en) * | 1995-11-15 | 1999-05-25 | Zen Research N.V. | Methods and apparatus for simultaneously reading multiple tracks of an optical storage medium |
US5959953A (en) * | 1996-07-03 | 1999-09-28 | Zen Research Nv | Methods and apparatus for performing cross-talk correction in a multi-track optical disk reader based on magnification error |
JP3872165B2 (ja) * | 1996-08-08 | 2007-01-24 | 株式会社リコー | 光学式記録ディスクドライブ装置に用いるデータ処理装置 |
US6137763A (en) * | 1998-09-24 | 2000-10-24 | Zen Research N.V. | Method and apparatus for buffering data in a multi-beam optical disk reader |
-
2002
- 2002-04-18 GB GBGB0208834.2A patent/GB0208834D0/en not_active Ceased
-
2003
- 2003-04-03 CN CNB038084937A patent/CN100382174C/zh not_active Expired - Fee Related
- 2003-04-03 EP EP03710122.7A patent/EP1500093B1/en not_active Expired - Lifetime
- 2003-04-03 JP JP2003585079A patent/JP4288181B2/ja not_active Expired - Fee Related
- 2003-04-03 AU AU2003214543A patent/AU2003214543A1/en not_active Abandoned
- 2003-04-03 KR KR10-2004-7016500A patent/KR20040102105A/ko active IP Right Grant
- 2003-04-03 WO PCT/IB2003/001348 patent/WO2003088232A2/en active Application Filing
- 2003-04-03 US US10/511,211 patent/US7539118B2/en not_active Expired - Fee Related
- 2003-04-15 TW TW092108670A patent/TWI278849B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2005523543A (ja) | 2005-08-04 |
AU2003214543A1 (en) | 2003-10-27 |
TW200402039A (en) | 2004-02-01 |
AU2003214543A8 (en) | 2003-10-27 |
KR20040102105A (ko) | 2004-12-03 |
US20050232124A1 (en) | 2005-10-20 |
GB0208834D0 (en) | 2002-05-29 |
CN1647172A (zh) | 2005-07-27 |
EP1500093B1 (en) | 2013-07-10 |
WO2003088232A3 (en) | 2004-03-04 |
EP1500093A2 (en) | 2005-01-26 |
US7539118B2 (en) | 2009-05-26 |
WO2003088232A2 (en) | 2003-10-23 |
TWI278849B (en) | 2007-04-11 |
CN100382174C (zh) | 2008-04-16 |
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