IT7824496A0 - Disco di registrazione video ad alta densita'. - Google Patents

Disco di registrazione video ad alta densita'.

Info

Publication number
IT7824496A0
IT7824496A0 IT7824496A IT2449678A IT7824496A0 IT 7824496 A0 IT7824496 A0 IT 7824496A0 IT 7824496 A IT7824496 A IT 7824496A IT 2449678 A IT2449678 A IT 2449678A IT 7824496 A0 IT7824496 A0 IT 7824496A0
Authority
IT
Italy
Prior art keywords
high density
video recording
recording disk
density video
disk
Prior art date
Application number
IT7824496A
Other languages
English (en)
Other versions
IT1158853B (it
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Publication of IT7824496A0 publication Critical patent/IT7824496A0/it
Application granted granted Critical
Publication of IT1158853B publication Critical patent/IT1158853B/it

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
    • G11B7/0051—Reproducing involving phase depth effects
IT24496/78A 1977-06-28 1978-06-13 Disco di registrazione video ad alta densita' IT1158853B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/810,702 US4161752A (en) 1977-06-28 1977-06-28 High density video disk having two pit depths

Publications (2)

Publication Number Publication Date
IT7824496A0 true IT7824496A0 (it) 1978-06-13
IT1158853B IT1158853B (it) 1987-02-25

Family

ID=25204476

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24496/78A IT1158853B (it) 1977-06-28 1978-06-13 Disco di registrazione video ad alta densita'

Country Status (8)

Country Link
US (1) US4161752A (it)
JP (1) JPS5412805A (it)
CA (1) CA1116748A (it)
DE (1) DE2825972C2 (it)
FR (1) FR2396378A1 (it)
GB (1) GB1572228A (it)
IT (1) IT1158853B (it)
NL (1) NL7806378A (it)

Families Citing this family (42)

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Publication number Priority date Publication date Assignee Title
JPS582415B2 (ja) * 1972-06-02 1983-01-17 富士写真フイルム株式会社 ジキキロクタイ
NL173104C (nl) * 1977-02-09 1983-12-01 Victor Company Of Japan Informatiesignaalregistratiemedium van roterende soort en inrichting voor het registreren van informatiesignalen daarop.
NL173797C (nl) * 1977-02-09 1984-03-01 Victor Company Of Japan Informatiesignaalregistreermedium met een plat oppervlak, en registreerinrichting voor een dergelijk medium.
US4419700A (en) * 1977-06-16 1983-12-06 Burroughs Corporation Dual-track spiral recording and associated system
NL7803517A (nl) * 1978-04-03 1979-10-05 Philips Nv Registratiedrager met een optisch uitleesbare fase- struktuur en inrichting voor het uitlezen.
JPS5545166A (en) * 1978-09-25 1980-03-29 Matsushita Electric Ind Co Ltd Recording and reproducing method for optical information
NL7810462A (nl) * 1978-10-19 1980-04-22 Philips Nv Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare stralingsreflekterende informatiestruktuur
NL7810463A (nl) * 1978-10-19 1980-04-22 Philips Nv Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare informatiestruktuur.
GB2048547B (en) * 1979-03-27 1983-03-30 Shibaura Denki Kk Video disc and playback system therefore
NL7906576A (nl) * 1979-09-03 1981-03-05 Philips Nv Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare informatiestruktuur, alsmede uitleesinrichting daarvoor.
NL7907180A (nl) * 1979-09-27 1981-03-31 Philips Nv Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare informatiestruktuur, alsmede inrichting voor het uitlezen daarvan.
FR2481501B1 (fr) * 1980-04-25 1985-09-13 Philips Nv Porteur d'enregistrement comportant une structure d'information lisible par voie optique et dispositif pour la lecture d'un tel porteur d'enregistrement
JPS5740755A (en) * 1980-08-25 1982-03-06 Sony Corp Magnetic recording medium
NL8100098A (nl) * 1981-01-12 1982-08-02 Philips Nv Registratiedrager met optisch uitleesbare informatiestruktuur.
US4359750A (en) * 1981-04-30 1982-11-16 Eastman Kodak Company Optical disc structure
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
JPS57212627A (en) * 1981-06-24 1982-12-27 Tdk Corp Optical recording method
US4428075A (en) * 1981-12-21 1984-01-24 Burroughs Corporation Methods of preformatting an optical disk
JPS5911551A (ja) * 1982-07-12 1984-01-21 Toshiba Corp 光学式情報記憶媒体
US4570252A (en) * 1982-08-09 1986-02-11 Drexler Technology Corporation Optical data retrieval system using multi-spectral light sources
JPS5936338A (ja) * 1982-08-24 1984-02-28 Matsushita Electric Ind Co Ltd 光デイスク記録再生方法
JPS5996546A (ja) * 1982-11-25 1984-06-04 Sony Corp 反射型光学記録体
US4736258A (en) * 1986-07-25 1988-04-05 Lowell A. Noble High density storage of information on a compact disc
JPS63146244A (ja) * 1986-12-10 1988-06-18 Hitachi Ltd 波長多重光記録装置
US5134601A (en) * 1989-08-08 1992-07-28 International Business Machines Corporation Optical disk sector servo patterns
US5235587A (en) * 1989-09-29 1993-08-10 The Regents Of The University Of California Optical data storage apparatus and method
US5748598A (en) * 1995-12-22 1998-05-05 Massachusetts Institute Of Technology Apparatus and methods for reading multilayer storage media using short coherence length sources
JPH04360041A (ja) * 1991-06-06 1992-12-14 Pioneer Electron Corp 光学式ディスク及びピックアップ装置
JPH04137512U (ja) * 1991-06-10 1992-12-22 日本コロムビア株式会社 光記録情報再生装置
JP3095871B2 (ja) * 1992-04-09 2000-10-10 パイオニア株式会社 光学式ディスクおよびその情報再生方法
US5502576A (en) * 1992-08-24 1996-03-26 Ramsay International Corporation Method and apparatus for the transmission, storage, and retrieval of documents in an electronic domain
US5757763A (en) * 1994-07-12 1998-05-26 Massachusetts Institute Of Technology Optical information storage via amplitude modulation
US5590102A (en) * 1995-01-12 1996-12-31 Discovision Associates Recording informatioin on an optical disc without using pre-manufactured tracks
US5646396A (en) * 1995-05-19 1997-07-08 Richard; Jenkin A. Optical position system
US5978329A (en) * 1995-06-07 1999-11-02 Discovision Associates Technique for closed loop servo operation in optical disc tracking control
US6060220A (en) * 1995-07-10 2000-05-09 The Board Of Trustees Of The Leland Stanford Junior University Method for producing an optical information carrier having a variable relief structure
US5995481A (en) * 1995-09-12 1999-11-30 Wea Manufacturing Inc. Light-readable recording disc utilizing half-wavelength pits or bumps and system for reading such discs
CN1077715C (zh) * 1995-12-06 2002-01-09 迪维安公司 聚焦控制的装置和方法
US5689485A (en) * 1996-04-01 1997-11-18 Discovision Associates Tracking control apparatus and method
US20060114791A1 (en) * 2004-11-30 2006-06-01 Charles Marshall Ultra-high data density optical media system
US7697404B2 (en) * 2005-10-12 2010-04-13 International Business Machines Corporation Medium, system, and method for a common optical data storage medium depression depth
US9817579B2 (en) 2015-09-18 2017-11-14 Seagate Technology Llc Maximize SMR drive capacity

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB714365A (en) * 1952-05-03 1954-08-25 Sidney Philip Clementson Television recording and reproduction
US3379095A (en) * 1963-12-17 1968-04-23 Edward K. Kaprelian Method of and means for recording and reproducing sound
US3371154A (en) * 1963-12-26 1968-02-27 Minnesota Mining & Mfg Audio-video disk recording system with crosstalk prevention
US3348217A (en) * 1964-05-01 1967-10-17 Alvin A Snaper Electro-optical computer or data processing system using superimposed polarizers
US3396266A (en) * 1964-05-25 1968-08-06 Ibm Optical information read-out system
US3503050A (en) * 1965-12-30 1970-03-24 Ibm Wave energy recording in radiation sensitive medium
US3510658A (en) * 1967-11-06 1970-05-05 Ibm Light beam servoing system with memory element having wavelength-discrimi-nating guide and data tracks
US3624278A (en) * 1969-11-19 1971-11-30 Technical Operations Inc Area multiplex image recording by flying spot raster scanning employing spatial filtering
US3855426A (en) * 1971-03-11 1974-12-17 Philips Corp Video disc recording and optical playback system therefor
US3999009A (en) * 1971-03-11 1976-12-21 U.S. Philips Corporation Apparatus for playing a transparent optically encoded multilayer information carrying disc
NL7103233A (it) * 1971-03-11 1972-09-13
US3703724A (en) * 1971-07-22 1972-11-21 Kms Ind Inc Recorder with zone plate scanner
NL7211998A (it) * 1972-09-02 1974-03-05
US4084185A (en) * 1974-02-12 1978-04-11 U.S. Philips Corporation Record carrier on which information is stored in an optically readable structure
NL7401858A (nl) * 1974-02-12 1975-08-14 Philips Nv Registratiedrager waarop informatie is aange- t in een optisch uitleesbare struktuur.
JPS5855567B2 (ja) * 1975-06-06 1983-12-10 株式会社日立製作所 ジヨウホウサイセイホウシキ
NL173104C (nl) * 1977-02-09 1983-12-01 Victor Company Of Japan Informatiesignaalregistratiemedium van roterende soort en inrichting voor het registreren van informatiesignalen daarop.
NL173797C (nl) * 1977-02-09 1984-03-01 Victor Company Of Japan Informatiesignaalregistreermedium met een plat oppervlak, en registreerinrichting voor een dergelijk medium.

Also Published As

Publication number Publication date
CA1116748A (en) 1982-01-19
NL7806378A (nl) 1979-01-02
US4161752A (en) 1979-07-17
JPS578532B2 (it) 1982-02-17
JPS5412805A (en) 1979-01-30
FR2396378A1 (fr) 1979-01-26
FR2396378B1 (it) 1982-02-05
GB1572228A (en) 1980-07-30
IT1158853B (it) 1987-02-25
DE2825972A1 (de) 1979-01-18
DE2825972C2 (de) 1984-02-23

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