NL192753B - Optical disc with signal tracks formed with pits of different depth. - Google Patents

Optical disc with signal tracks formed with pits of different depth.

Info

Publication number
NL192753B
NL192753B NL8302026A NL8302026A NL192753B NL 192753 B NL192753 B NL 192753B NL 8302026 A NL8302026 A NL 8302026A NL 8302026 A NL8302026 A NL 8302026A NL 192753 B NL192753 B NL 192753B
Authority
NL
Netherlands
Prior art keywords
pits
optical disc
different depth
tracks formed
signal tracks
Prior art date
Application number
NL8302026A
Other languages
Dutch (nl)
Other versions
NL8302026A (en
NL192753C (en
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of NL8302026A publication Critical patent/NL8302026A/en
Publication of NL192753B publication Critical patent/NL192753B/en
Application granted granted Critical
Publication of NL192753C publication Critical patent/NL192753C/en

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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • G11B7/24088—Pits for storing more than two values, i.e. multi-valued recording for data or prepits
    • 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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • 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
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1496—Digital recording or reproducing using self-clocking codes characterised by the use of more than three levels
    • 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
    • G11B7/0045—Recording
    • 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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
NL8302026A 1982-06-07 1983-06-07 Optical disc with signal tracks formed with pits of different depth. NL192753C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9715082 1982-06-07
JP57097150A JPS58215735A (en) 1982-06-07 1982-06-07 Optical disc recording method

Publications (3)

Publication Number Publication Date
NL8302026A NL8302026A (en) 1984-01-02
NL192753B true NL192753B (en) 1997-09-01
NL192753C NL192753C (en) 1998-01-06

Family

ID=14184537

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8302026A NL192753C (en) 1982-06-07 1983-06-07 Optical disc with signal tracks formed with pits of different depth.

Country Status (6)

Country Link
JP (1) JPS58215735A (en)
CA (1) CA1212762A (en)
DE (1) DE3320548C2 (en)
FR (1) FR2528215B1 (en)
GB (1) GB2122408B (en)
NL (1) NL192753C (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178628A (en) * 1983-03-30 1984-10-09 Canon Inc Information recording method
GB8330101D0 (en) * 1983-11-11 1983-12-21 Combined Tech Corp Plc Optical data storage
JPS61104333A (en) * 1984-10-22 1986-05-22 Nec Corp Optical recording system
JPS63119045A (en) * 1986-11-06 1988-05-23 Canon Inc Multi-value information recording method
JP2601266B2 (en) * 1987-02-09 1997-04-16 日本無機株式会社 Information recording method of recording material
JPS647327A (en) * 1987-03-25 1989-01-11 Casio Computer Co Ltd Method and apparatus for optical information recording
JP2642422B2 (en) * 1988-06-30 1997-08-20 株式会社東芝 Information recording / reproducing device
US5408456A (en) * 1990-02-02 1995-04-18 Canon Kabushiki Kaisha Data reproducing method and apparatus for determining the interval between pits on a recording medium from a modulated read-out signal
JP2751884B2 (en) * 1995-08-15 1998-05-18 日本電気株式会社 Optical head device
US5854779A (en) * 1996-01-05 1998-12-29 Calimetrics Optical disc reader for reading multiple levels of pits on an optical disc
DE19732065A1 (en) * 1997-07-25 1999-01-28 Harm Drecoll Information storage on a storage medium
US6760299B1 (en) 1999-06-30 2004-07-06 Sharp Kabushiki Kaisha Optical disc having pits of different depth formed therein, optical disc device for reproducing the same, and method of reproduction
JP2004281027A (en) 2003-02-24 2004-10-07 Ricoh Co Ltd Optical recording medium and optical information processing device
JP4334414B2 (en) 2004-05-31 2009-09-30 株式会社リコー Optical reproducing method, optical pickup device, optical reproducing device, and optical recording medium
DE102007030857A1 (en) * 2007-06-25 2009-01-15 Kickartz, Josef, A., Dipl.-Ing. Device for storing data on a data carrier
JP5256161B2 (en) 2009-10-02 2013-08-07 日立コンシューマエレクトロニクス株式会社 Optical information recording / reproducing apparatus and information reproducing apparatus
JP5309008B2 (en) 2009-12-15 2013-10-09 日立コンシューマエレクトロニクス株式会社 Optical information recording / reproducing apparatus and optical information reproducing apparatus
JP5409479B2 (en) 2010-03-29 2014-02-05 日立コンシューマエレクトロニクス株式会社 Optical information reproducing apparatus, optical information recording apparatus, and information recording method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740733A (en) * 1971-11-01 1973-06-19 Eg & G Inc Storing digital data on a grooved record medium
JPS5182601A (en) * 1975-01-17 1976-07-20 Sony Corp
GB1600432A (en) * 1977-02-09 1981-10-14 Victor Company Of Japan Information signal recording medium of rotary type and apparatus for recording information signal thereon
NL7803517A (en) * 1978-04-03 1979-10-05 Philips Nv RECORD CARRIER WITH AN OPTICALLY READABLE PHASE STRUCTURE AND DEVICE FOR READING.
JPS55113175A (en) * 1979-02-23 1980-09-01 Victor Co Of Japan Ltd Information signal recording medium and its recording system
NL8000122A (en) * 1980-01-09 1981-08-03 Philips Nv DISC-SHAPED, OPTICALLY-READABLE RECORD CARRIER AS A STORAGE MEDIUM FOR DATA INFORMATION, DEVICE FOR MANUFACTURING SUCH REGISTRATION CARRIER, DEVICE FOR RECORDING AND / OR DISPLAYING DATA INFORMATION IN C.Q. OF SUCH REGISTRATION CARRIER.
JPS58137148A (en) * 1982-02-08 1983-08-15 Sony Corp Information recording medium

Also Published As

Publication number Publication date
GB2122408B (en) 1986-01-02
GB2122408A (en) 1984-01-11
GB8315551D0 (en) 1983-07-13
FR2528215A1 (en) 1983-12-09
NL8302026A (en) 1984-01-02
CA1212762A (en) 1986-10-14
DE3320548A1 (en) 1983-12-08
JPS58215735A (en) 1983-12-15
FR2528215B1 (en) 1987-03-06
DE3320548C2 (en) 1994-03-17
NL192753C (en) 1998-01-06

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V1 Lapsed because of non-payment of the annual fee

Effective date: 20030101