DE3676870D1 - Binaeres kodierverfahren fuer daten, welche von einer optischen platte gelesen werden und geraet dafuer. - Google Patents

Binaeres kodierverfahren fuer daten, welche von einer optischen platte gelesen werden und geraet dafuer.

Info

Publication number
DE3676870D1
DE3676870D1 DE8686302928T DE3676870T DE3676870D1 DE 3676870 D1 DE3676870 D1 DE 3676870D1 DE 8686302928 T DE8686302928 T DE 8686302928T DE 3676870 T DE3676870 T DE 3676870T DE 3676870 D1 DE3676870 D1 DE 3676870D1
Authority
DE
Germany
Prior art keywords
optical disk
data read
encoding method
device therefor
binary encoding
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
Application number
DE8686302928T
Other languages
English (en)
Inventor
Kumio C O Computer Serv Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSK Corp
Original Assignee
CSK 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
Priority claimed from JP8569985A external-priority patent/JPS61244131A/ja
Priority claimed from JP60085698A external-priority patent/JPS61244182A/ja
Application filed by CSK Corp filed Critical CSK Corp
Application granted granted Critical
Publication of DE3676870D1 publication Critical patent/DE3676870D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
DE8686302928T 1985-04-22 1986-04-18 Binaeres kodierverfahren fuer daten, welche von einer optischen platte gelesen werden und geraet dafuer. Expired - Fee Related DE3676870D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8569985A JPS61244131A (ja) 1985-04-22 1985-04-22 光記録情報読取装置の出力信号二値化方式
JP60085698A JPS61244182A (ja) 1985-04-22 1985-04-22 ビデオ信号二値化方法および装置

Publications (1)

Publication Number Publication Date
DE3676870D1 true DE3676870D1 (de) 1991-02-21

Family

ID=26426704

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686302928T Expired - Fee Related DE3676870D1 (de) 1985-04-22 1986-04-18 Binaeres kodierverfahren fuer daten, welche von einer optischen platte gelesen werden und geraet dafuer.

Country Status (3)

Country Link
US (1) US4819222A (de)
EP (1) EP0202773B1 (de)
DE (1) DE3676870D1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2619381B2 (ja) * 1987-03-20 1997-06-11 株式会社日立製作所 光学的情報再生装置
JPH0233221A (ja) * 1988-07-22 1990-02-02 Matsushita Electric Ind Co Ltd コード変換装置と復号装置
US5321672A (en) * 1989-04-19 1994-06-14 Hitachi, Ltd. Method of an apparatus for magneto-optically recording information by changing the position or shape or controlling the diameter of reversed domains
JPH04212723A (ja) * 1990-07-31 1992-08-04 Toshiba Corp 情報記録再生装置
JPH05128574A (ja) * 1991-10-31 1993-05-25 Olympus Optical Co Ltd 光学ヘツド
JPH05128554A (ja) * 1991-11-01 1993-05-25 Olympus Optical Co Ltd 光学的情報記録再生装置
JPH0795538A (ja) * 1993-09-17 1995-04-07 Canon Inc 画像記録再生装置
US5648949A (en) * 1995-02-13 1997-07-15 Hitachi, Ltd. Method and apparatus for information reproduction at variable reference level
JP3479154B2 (ja) * 1995-04-04 2003-12-15 株式会社アドバンテスト 信号弁別回路
JP4922594B2 (ja) * 2005-05-23 2012-04-25 富士通株式会社 光送信装置、光受信装置、およびそれらを含む光通信システム

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2451800C3 (de) * 1973-11-09 1978-12-14 N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) Spitzendetektion mit konstantem Teiloffset-Betrieb
US3988531A (en) * 1975-04-02 1976-10-26 Zenith Radio Corporation System for compensating for incorrect duty factor when reading out information stored in a video disc
US4017903A (en) * 1975-08-27 1977-04-12 Hewlett-Packard Company Pulse code modulation recording and/or reproducing system
US4145758A (en) * 1977-10-25 1979-03-20 Drexler Technology Corporation Error checking method and apparatus for digital data in optical recording systems
US4278756A (en) * 1979-07-06 1981-07-14 Drexler Technology Corporation Reflective data storage medium made by silver diffusion transfer
US4278758A (en) * 1979-07-06 1981-07-14 Drexler Technology Corporation Process for making a reflective data storage medium
US4269917A (en) * 1979-07-06 1981-05-26 Drexler Technology Corporation Data storage medium having reflective particulate silver layer
US4264935A (en) * 1980-04-09 1981-04-28 Sperry Corporation Balanced tapped delay line spectral shaping differentiation circuit for signal detection
JPS56153488A (en) * 1980-04-28 1981-11-27 Mitsubishi Electric Corp Recording device
US4345412A (en) * 1980-06-13 1982-08-24 Balzer Winton E Cup lidding apparatus and leakproof cup
US4542288A (en) * 1981-02-27 1985-09-17 Drexler Technology Corporation Method for making a laser recordable wallet-size plastic card
US4500777A (en) * 1981-02-27 1985-02-19 Drexler Technology Corporation High data capacity, scratch and dust resistant, infrared, read-write data card for automatic teller machines
US4360728A (en) * 1981-02-27 1982-11-23 Drexler Technology Corporation Banking card for automatic teller machines and the like
US4544835A (en) * 1983-12-29 1985-10-01 Drexler Technology Corporation Data system containing a high capacity optical contrast laser recordable wallet-size plastic card
US4346412A (en) * 1981-04-21 1982-08-24 Magnetic Peripherals, Inc. Read signal processing circuit
US4385372A (en) * 1981-05-01 1983-05-24 Drexler Technology Corporation Reflective optical data storage and laser recording media having grooved dielectric encoded prerecorded information
JPS5848209A (ja) * 1981-09-14 1983-03-22 Sony Corp 情報信号有無判別回路装置
EP0077075B1 (de) * 1981-10-14 1986-07-16 Hitachi, Ltd. Digitales Abspielgerät zum Reproduzieren einer digitalen Signalfolge
NL8303561A (nl) * 1983-10-17 1985-05-17 Philips Nv Geregelde oscillatorschakeling.
NL8303859A (nl) * 1983-11-10 1985-06-03 Philips Nv Selektief scramblen bij compact disc.
JPS60247836A (ja) * 1984-05-22 1985-12-07 Nippon Gakki Seizo Kk 光学式情報再生装置

Also Published As

Publication number Publication date
EP0202773A1 (de) 1986-11-26
EP0202773B1 (de) 1991-01-16
US4819222A (en) 1989-04-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee