BR0002173A - Aparelho para ler ou gravar em meios de gravação óticos - Google Patents
Aparelho para ler ou gravar em meios de gravação óticosInfo
- Publication number
- BR0002173A BR0002173A BR0002173-3A BR0002173A BR0002173A BR 0002173 A BR0002173 A BR 0002173A BR 0002173 A BR0002173 A BR 0002173A BR 0002173 A BR0002173 A BR 0002173A
- Authority
- BR
- Brazil
- Prior art keywords
- reading
- optical recording
- signal
- phase
- sym
- Prior art date
Links
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
- G11B7/0901—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 for track following only
- G11B7/0906—Differential phase difference systems
-
- 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
- G11B7/0901—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 for track following only
-
- 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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
-
- 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
- G11B7/13—Optical detectors therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
-
- 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
- G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Manipulation Of Pulses (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Patente de Invenção: <B>"APARELHO PARA LER OU GRAVAR EM MEIOS DE GRAVAçãO óTICOS"<D>. A presente invenção refere-se a um aparelho para ler e/ou gravar em um meio gravador óptico, tendo um fotodetector (10) e um detector de fase (13) para detectar uma diferença de fase (<sym>) entre sinais de saída (A+C, B+D) do fotodetector (10). Um objetivo da presente invenção é propor um aparelho no qual um sinal de fase (<sym>) que está tão correto quanto possível é gerado. Um objetivo adicional da invenção é especificar um método por meio do qual um sinal de erro de trilha correto (TE) é determinado usando um método de detecção de fase. De acordo com a invenção, para aquelas extremidades o aparelho tem um detector de seq³ência de extremidade (14) para detectar a seq³ência dos sinais de extremidades de saída (A+C, B+D), e uma unidade de bloquear sinal (15) para bloquear o sinal de saída (<sym>) do detector de fase (13).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924733A DE19924733A1 (de) | 1999-05-31 | 1999-05-31 | Gerät zum Lesen oder Beschreiben optischer Aufzeichnungsträger |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0002173A true BR0002173A (pt) | 2001-01-02 |
Family
ID=7909646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0002173-3A BR0002173A (pt) | 1999-05-31 | 2000-05-31 | Aparelho para ler ou gravar em meios de gravação óticos |
Country Status (12)
Country | Link |
---|---|
US (1) | US7184375B1 (pt) |
EP (1) | EP1058244B1 (pt) |
JP (2) | JP2000353327A (pt) |
KR (1) | KR100649138B1 (pt) |
CN (1) | CN1148728C (pt) |
BR (1) | BR0002173A (pt) |
DE (2) | DE19924733A1 (pt) |
HK (1) | HK1029649A1 (pt) |
ID (1) | ID26332A (pt) |
MX (1) | MXPA00005196A (pt) |
MY (1) | MY123401A (pt) |
PL (1) | PL197650B1 (pt) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI269284B (en) * | 2003-04-02 | 2006-12-21 | Matsushita Electric Ind Co Ltd | Detecting device for tracing error |
DE102004032127A1 (de) * | 2004-07-01 | 2006-01-19 | Deutsche Thomson-Brandt Gmbh | Anordnung zur Gewinnung eines Spurwobbelsignals |
US20100195464A1 (en) * | 2007-07-02 | 2010-08-05 | Panasonic Corporation | Integrated circuit, optical disc system and tracking error signal generation method |
US8077566B2 (en) | 2010-03-30 | 2011-12-13 | Oracle International Corporation | Systems and methods for testing unformatted optical recording media |
US9917645B2 (en) * | 2016-05-25 | 2018-03-13 | Google Llc | Phase sensitive beam tracking |
DE102019100507A1 (de) * | 2019-01-10 | 2020-07-16 | Northrop Grumman Litef Gmbh | Verfahren zum Auslesen von Daten von Inertialsensoren |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5774837A (en) * | 1980-10-25 | 1982-05-11 | Olympus Optical Co Ltd | Signal detection system of optical information reproducing device |
JPS5877036A (ja) * | 1981-10-30 | 1983-05-10 | Olympus Optical Co Ltd | ピット中心検出方法 |
JPS58150145A (ja) * | 1982-03-03 | 1983-09-06 | Toshiba Corp | 光学式デジタルデイスクプレ−ヤのトラツキング制御回路 |
JPS58208944A (ja) * | 1982-05-31 | 1983-12-05 | Sony Corp | 光学ヘツド制御信号発生装置 |
JPS59167861A (ja) * | 1983-03-14 | 1984-09-21 | Sony Corp | 光学式デイスク・プレ−ヤ−のトラツキング制御装置 |
US5258968A (en) * | 1986-12-11 | 1993-11-02 | Pioneer Electronic Corporation | Tracking error signal generating device for preventing offset of the generated tracking error signal |
JPH06343039A (ja) * | 1993-05-26 | 1994-12-13 | Victor Co Of Japan Ltd | 位相検出回路およびデジタルpll回路 |
DE19630887A1 (de) * | 1996-07-31 | 1998-02-05 | Thomson Brandt Gmbh | Gerät zum Lesen und/oder Beschreiben optischer Aufzeichnungsträger |
JP3214372B2 (ja) * | 1996-10-22 | 2001-10-02 | 松下電器産業株式会社 | トラッキング誤差信号検出装置 |
US6014354A (en) * | 1996-11-06 | 2000-01-11 | Sharp Kabushiki Kaisha | Tracking control device for optical pickup |
JP3510439B2 (ja) * | 1996-12-27 | 2004-03-29 | 日本ビクター株式会社 | 光学的情報再生装置 |
JP3580066B2 (ja) * | 1997-01-28 | 2004-10-20 | 三菱電機株式会社 | 光学的情報再生装置 |
JP2000123378A (ja) * | 1998-10-13 | 2000-04-28 | Pioneer Electronic Corp | トラッキングエラー生成装置 |
-
1999
- 1999-05-31 DE DE19924733A patent/DE19924733A1/de not_active Withdrawn
-
2000
- 2000-05-16 MY MYPI20002133A patent/MY123401A/en unknown
- 2000-05-19 EP EP00110252A patent/EP1058244B1/en not_active Expired - Lifetime
- 2000-05-19 DE DE60016085T patent/DE60016085T2/de not_active Expired - Fee Related
- 2000-05-26 MX MXPA00005196A patent/MXPA00005196A/es active IP Right Grant
- 2000-05-26 US US09/579,736 patent/US7184375B1/en not_active Expired - Fee Related
- 2000-05-29 KR KR1020000029075A patent/KR100649138B1/ko not_active IP Right Cessation
- 2000-05-31 CN CNB001087150A patent/CN1148728C/zh not_active Expired - Fee Related
- 2000-05-31 ID IDP20000464D patent/ID26332A/id unknown
- 2000-05-31 BR BR0002173-3A patent/BR0002173A/pt not_active IP Right Cessation
- 2000-05-31 PL PL340417A patent/PL197650B1/pl not_active IP Right Cessation
- 2000-05-31 JP JP2000162209A patent/JP2000353327A/ja active Pending
-
2001
- 2001-01-19 HK HK01100471A patent/HK1029649A1/xx not_active IP Right Cessation
-
2008
- 2008-12-24 JP JP2008327482A patent/JP2009099257A/ja not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE60016085T2 (de) | 2005-06-16 |
ID26332A (id) | 2000-12-14 |
MXPA00005196A (es) | 2002-03-08 |
CN1148728C (zh) | 2004-05-05 |
KR20000077477A (ko) | 2000-12-26 |
HK1029649A1 (en) | 2001-04-06 |
PL340417A1 (en) | 2000-12-04 |
PL197650B1 (pl) | 2008-04-30 |
CN1275763A (zh) | 2000-12-06 |
DE19924733A1 (de) | 2000-12-07 |
EP1058244A3 (en) | 2002-01-23 |
EP1058244B1 (en) | 2004-11-24 |
DE60016085D1 (de) | 2004-12-30 |
US7184375B1 (en) | 2007-02-27 |
MY123401A (en) | 2006-05-31 |
JP2000353327A (ja) | 2000-12-19 |
JP2009099257A (ja) | 2009-05-07 |
EP1058244A2 (en) | 2000-12-06 |
KR100649138B1 (ko) | 2006-11-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 11A ANUIDADE(S). |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2103 DE 26/04/2011. |