MX2008015884A - Dispositivo de lectura y metodo de lectura para medio de grabacion de datos optico. - Google Patents

Dispositivo de lectura y metodo de lectura para medio de grabacion de datos optico.

Info

Publication number
MX2008015884A
MX2008015884A MX2008015884A MX2008015884A MX2008015884A MX 2008015884 A MX2008015884 A MX 2008015884A MX 2008015884 A MX2008015884 A MX 2008015884A MX 2008015884 A MX2008015884 A MX 2008015884A MX 2008015884 A MX2008015884 A MX 2008015884A
Authority
MX
Mexico
Prior art keywords
reading
recording medium
laser beam
output
optical data
Prior art date
Application number
MX2008015884A
Other languages
English (en)
Inventor
Atsushi Nakamura
Naoyasu Miyagawa
Original Assignee
Panasonic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of MX2008015884A publication Critical patent/MX2008015884A/es

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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/28—Speed controlling, regulating, or indicating
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
    • G11B7/1267—Power calibration

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

Se describen dispositivos de lectura que suprimen el deterioro de las marcas de grabación provocados al incrementar la energía de láser de salida para compensar la salida en la proporción S/N, cuando se lee una información de alta velocidad grabada en un medio de grabación de alta densidad. Para leer información grabada a un medio de información de datos óptico que es escrito y leído utilizando un haz de láser emitido de un láser semiconductor, el método de lectura modula una corriente de alta frecuencia sobre la corriente de impulso del láser semiconductor para emitir el haz de láser y cambia la velocidad de modulación de luz de acuerdo con la velocidad lineal seleccionada usada para la lectura. La velocidad de modulación de luz es la proporción Pp/Pave entre la energía pico Pp y la energía de lectura promedio Pave de la intensidad de luz del haz de láser modulado de alta frecuencia.
MX2008015884A 2006-06-12 2007-05-31 Dispositivo de lectura y metodo de lectura para medio de grabacion de datos optico. MX2008015884A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006162295 2006-06-12
PCT/JP2007/061505 WO2007145124A1 (en) 2006-06-12 2007-05-31 Reading device and reading method for an optical data recording medium

Publications (1)

Publication Number Publication Date
MX2008015884A true MX2008015884A (es) 2009-04-22

Family

ID=38330766

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2008015884A MX2008015884A (es) 2006-06-12 2007-05-31 Dispositivo de lectura y metodo de lectura para medio de grabacion de datos optico.

Country Status (16)

Country Link
US (1) US8000177B2 (es)
EP (6) EP2276024A1 (es)
JP (6) JP4422780B2 (es)
KR (1) KR101318529B1 (es)
CN (6) CN101950566A (es)
AR (2) AR061292A1 (es)
AT (1) ATE504057T1 (es)
AU (1) AU2007259817B2 (es)
BR (2) BRPI0712752A2 (es)
CA (1) CA2652519A1 (es)
DE (1) DE602007013556D1 (es)
EG (1) EG26294A (es)
ES (1) ES2361205T3 (es)
MX (1) MX2008015884A (es)
RU (1) RU2434311C2 (es)
WO (1) WO2007145124A1 (es)

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EP2370973A4 (en) * 2008-11-28 2014-08-06 Univ Brigham Young HIGH POWER OPTICAL DISK DRIVES
JP2011100514A (ja) * 2009-11-06 2011-05-19 Hitachi-Lg Data Storage Inc 光ディスク装置
JP2011134409A (ja) * 2009-12-25 2011-07-07 Hitachi-Lg Data Storage Inc 光ディスク装置及び光ディスク再生方法
JP2011134414A (ja) * 2009-12-25 2011-07-07 Hitachi-Lg Data Storage Inc 光ディスク装置及び光ディスク装置におけるデータ再生方法
JP2011134404A (ja) * 2009-12-25 2011-07-07 Hitachi-Lg Data Storage Inc 光ディスク装置及び光ディスク装置の制御方法
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US8493246B2 (en) 2011-12-20 2013-07-23 General Electric Company Methods and systems for decoding data
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JP2013251022A (ja) * 2012-05-31 2013-12-12 Funai Electric Co Ltd 光ディスク装置、光ディスクの再生方法
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Also Published As

Publication number Publication date
BRPI0712752A2 (pt) 2011-05-10
CN101467207A (zh) 2009-06-24
BRPI0722380A2 (pt) 2012-06-12
CN101950568A (zh) 2011-01-19
EP2346036A1 (en) 2011-07-20
EP2276024A1 (en) 2011-01-19
KR20090020589A (ko) 2009-02-26
DE602007013556D1 (de) 2011-05-12
JP2010157354A (ja) 2010-07-15
AR061292A1 (es) 2008-08-20
KR101318529B1 (ko) 2013-10-16
US8000177B2 (en) 2011-08-16
JP2009540478A (ja) 2009-11-19
AU2007259817B2 (en) 2011-11-03
AR069180A2 (es) 2010-01-06
JP4732544B2 (ja) 2011-07-27
EP2346037A1 (en) 2011-07-20
JP4422780B2 (ja) 2010-02-24
EP2033188A1 (en) 2009-03-11
CN101976568A (zh) 2011-02-16
JP4598156B2 (ja) 2010-12-15
JP2010238358A (ja) 2010-10-21
EG26294A (en) 2013-06-12
CN101467207B (zh) 2010-12-15
JP4621809B2 (ja) 2011-01-26
EP2339578A1 (en) 2011-06-29
ES2361205T3 (es) 2011-06-14
JP2009224027A (ja) 2009-10-01
JP2010277689A (ja) 2010-12-09
CN101976569A (zh) 2011-02-16
US20100226218A1 (en) 2010-09-09
CN101950567A (zh) 2011-01-19
AU2007259817A1 (en) 2007-12-21
JP4763088B2 (ja) 2011-08-31
EP2033188B1 (en) 2011-03-30
CA2652519A1 (en) 2007-12-21
ATE504057T1 (de) 2011-04-15
RU2008151764A (ru) 2010-07-20
RU2434311C2 (ru) 2011-11-20
JP4545821B2 (ja) 2010-09-15
JP2011018450A (ja) 2011-01-27
CN101950566A (zh) 2011-01-19
WO2007145124A1 (en) 2007-12-21
EP2346035A1 (en) 2011-07-20

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