TW200703283A - Processing circuit device and disc device - Google Patents

Processing circuit device and disc device

Info

Publication number
TW200703283A
TW200703283A TW095117695A TW95117695A TW200703283A TW 200703283 A TW200703283 A TW 200703283A TW 095117695 A TW095117695 A TW 095117695A TW 95117695 A TW95117695 A TW 95117695A TW 200703283 A TW200703283 A TW 200703283A
Authority
TW
Taiwan
Prior art keywords
processing circuit
disc
differential signals
circuit device
transistors
Prior art date
Application number
TW095117695A
Other languages
English (en)
Inventor
Koji Nishikawa
Makoto Hiraga
Original Assignee
Rohm Co Ltd
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 Rohm Co Ltd filed Critical Rohm Co Ltd
Publication of TW200703283A publication Critical patent/TW200703283A/zh

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
    • G11B7/094—Methods and circuits for servo offset compensation
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/14—Arrangements for performing computing operations, e.g. operational amplifiers for addition or subtraction 
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/15—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors
    • H03K5/151—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors with two complementary outputs
    • 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
    • G11B7/0903—Multi-beam tracking 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
    • G11B7/0908—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 focusing only
    • G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)
  • Manipulation Of Pulses (AREA)
  • Logic Circuits (AREA)
TW095117695A 2005-05-18 2006-05-18 Processing circuit device and disc device TW200703283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005145829 2005-05-18

Publications (1)

Publication Number Publication Date
TW200703283A true TW200703283A (en) 2007-01-16

Family

ID=37431207

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095117695A TW200703283A (en) 2005-05-18 2006-05-18 Processing circuit device and disc device

Country Status (6)

Country Link
US (1) US7791989B2 (zh)
JP (1) JP4813470B2 (zh)
KR (1) KR20080011214A (zh)
CN (1) CN101176151A (zh)
TW (1) TW200703283A (zh)
WO (1) WO2006123635A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019169396A1 (en) * 2018-03-02 2019-09-06 David Schie Charge domain mathematical engine and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729511A (en) * 1991-02-15 1998-03-17 Discovision Associates Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
JPH05325304A (ja) * 1992-05-25 1993-12-10 Olympus Optical Co Ltd 光磁気再生装置
US5357155A (en) * 1992-08-07 1994-10-18 National Semiconductor Corporation Dual input signal summer circuit
TW527586B (en) * 1999-03-12 2003-04-11 Toshiba Corp Current control circuit, variable gain amplifying circuit using the same, and the compact disk regeneration device
JP3963079B2 (ja) 2001-04-09 2007-08-22 日本ビクター株式会社 ディスク種類判別装置
JP2003218727A (ja) 2002-01-18 2003-07-31 Hitachi Ltd ダイレクトコンバージョン受信装置

Also Published As

Publication number Publication date
JPWO2006123635A1 (ja) 2008-12-25
WO2006123635A1 (ja) 2006-11-23
JP4813470B2 (ja) 2011-11-09
CN101176151A (zh) 2008-05-07
US7791989B2 (en) 2010-09-07
US20090080309A1 (en) 2009-03-26
KR20080011214A (ko) 2008-01-31

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