SE7501465L - - Google Patents

Info

Publication number
SE7501465L
SE7501465L SE7501465A SE7501465A SE7501465L SE 7501465 L SE7501465 L SE 7501465L SE 7501465 A SE7501465 A SE 7501465A SE 7501465 A SE7501465 A SE 7501465A SE 7501465 L SE7501465 L SE 7501465L
Authority
SE
Sweden
Prior art keywords
semiconductor diode
light
recording medium
laser
diode laser
Prior art date
Application number
SE7501465A
Other languages
Unknown language ( )
English (en)
Other versions
SE402031B (sv
Inventor
T Kaneko
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 SE7501465L publication Critical patent/SE7501465L/
Publication of SE402031B publication Critical patent/SE402031B/xx

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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
SE7501465A 1974-02-12 1975-02-10 Anordning for reproducering av information innefattande en halvledarlaseranordning SE402031B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49017017A JPS5760693B2 (cs) 1974-02-12 1974-02-12

Publications (2)

Publication Number Publication Date
SE7501465L true SE7501465L (cs) 1975-08-13
SE402031B SE402031B (sv) 1978-06-12

Family

ID=11932212

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7501465A SE402031B (sv) 1974-02-12 1975-02-10 Anordning for reproducering av information innefattande en halvledarlaseranordning

Country Status (9)

Country Link
US (1) US4005259A (cs)
JP (1) JPS5760693B2 (cs)
AT (1) AT346921B (cs)
CA (1) CA1053369A (cs)
DE (1) DE2505795C2 (cs)
FR (1) FR2260912B1 (cs)
GB (1) GB1493081A (cs)
NL (1) NL7501444A (cs)
SE (1) SE402031B (cs)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190775A (en) * 1975-02-18 1980-02-26 Agency Of Industrial Science & Technology Optical memory playback apparatus
FR2326006A1 (fr) * 1975-09-26 1977-04-22 Thomson Brandt Procede de commande de la mise en route et de l'arret de la lecture d'un support d'enregistrement, support d'enregistrement et appareil pour la mise en oeuvre de ce procede
US4224480A (en) * 1976-02-18 1980-09-23 Matsushita Electric Industrial Co., Ltd. Holographic playback system using a charge storage sensor and binary decoding
NL176315C (nl) * 1976-05-12 1985-03-18 Philips Nv Optische aftastinrichting.
NL7608561A (nl) * 1976-08-02 1978-02-06 Philips Nv Optische uitleeseenheid voor het aftasten van een registratiedrager voorzien van een stra- lingsreflekterende informatiestruktuur.
NL7703123A (nl) * 1977-03-23 1978-09-26 Philips Nv Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager.
NL7713711A (nl) * 1977-12-12 1979-06-14 Philips Nv Optisch uitleeseenheid voor het uitlezen van een bewegende informatiedrager, in het bijzonder voor het uitlezen van een videoplaat.
US4358796A (en) * 1978-03-27 1982-11-09 Discovision Associates Spindle servo system for videodisc player
JPS54143659A (en) * 1978-04-28 1979-11-09 Canon Inc Image forming optical system for semiconductor laser
US4236050A (en) * 1978-06-30 1980-11-25 Mca Discovision, Inc. System for recovering information from a movable information storage medium having a pilot signal with an aligned phase angle in adjacent tracks
US4241423A (en) * 1978-12-22 1980-12-23 Rca Corporation Optical memory with injection laser as light source and detector
US4333173A (en) * 1979-06-15 1982-06-01 Hitachi, Ltd. Optical information processor with prismatic correction of laser beam shape
JPS56117339A (en) * 1980-02-18 1981-09-14 Hitachi Ltd Optical information processor
DE3027318C2 (de) * 1979-08-03 1983-05-05 Hitachi, Ltd., Tokyo Optisches Abtastsystem
JPS56117341A (en) * 1980-02-18 1981-09-14 Toshiba Corp Optical disk and its manufacture
JPS6220Y2 (cs) 1980-03-31 1987-01-06
JPS56145535A (en) * 1980-04-15 1981-11-12 Matsushita Electric Ind Co Ltd Disc for optical recording
US4504934A (en) * 1980-05-02 1985-03-12 Matsushita Electric Industrial Co., Ltd. Optical signal reproducing apparatus
US5577015A (en) * 1980-07-16 1996-11-19 Discovision Associates System for recording digital information in a pulse-length modulation
US5553047A (en) * 1980-07-16 1996-09-03 Discovision Associates System for recording digital information in a pulse-length modulation format
US5084852A (en) * 1980-07-16 1992-01-28 Discovision Associates System for recording digital information in a pulse-length modulation format
US5253244A (en) * 1980-07-16 1993-10-12 Discovision Associates System for recording digital information in a pulse-length modulation format
CA1147858A (en) * 1980-07-16 1983-06-07 Discovision Associates System for recording digital information in a pulse-length modulation format
US5003526A (en) * 1980-07-16 1991-03-26 Discovision Associates System for recording digital information in a pulse-length modulation format
US4467467A (en) * 1980-10-20 1984-08-21 Discovision Associates Video recorder-playback machine
US4488279A (en) * 1980-10-20 1984-12-11 Discovision Associates Video recorder-playback machine
US4562569A (en) * 1982-01-05 1985-12-31 California Institute Of Technology Tandem coupled cavity lasers with separate current control and high parasitic resistance between them for bistability and negative resistance characteristics and use thereof for optical disc readout
JPS5945646A (ja) * 1982-09-07 1984-03-14 Hitachi Ltd 光学的情報再生装置
US4562567A (en) * 1982-11-12 1985-12-31 North American Philips Corporation Apparatus for controlling the write beam in an optical data recording system
JPS61136331A (ja) * 1984-12-07 1986-06-24 Kokusai Electric Co Ltd 時分割多重集配信装置
JPS61172387A (ja) * 1985-01-28 1986-08-04 Nippon Telegr & Teleph Corp <Ntt> 半導体レ−ザ装置および光記録再生装置
US4899327A (en) * 1985-02-04 1990-02-06 International Business Machines Corporation Focus servo loop correction
US4658146A (en) * 1985-03-07 1987-04-14 Laser Dynamics Inc. Extended cavity laser readout apparatus
JPH0746435B2 (ja) * 1985-03-14 1995-05-17 オリンパス光学工業株式会社 光学的情報記録再生装置における光ピックアップの異常判別装置
DE3544824A1 (de) * 1985-12-18 1987-06-19 Siemens Ag Miniaturisierbarer schreib/lesekopf fuer ein optisches speichersystem
JPH0685233B2 (ja) * 1986-06-27 1994-10-26 株式会社リコー 半導体レ−ザ−光源装置
JPS62157339A (ja) * 1986-11-28 1987-07-13 Hitachi Ltd 情報再生装置
US5018126A (en) * 1988-09-02 1991-05-21 International Business Machines Corporation Checking media operations and recording during optical recording
US4941139A (en) * 1988-09-02 1990-07-10 International Business Machines Corporation Checking media operations and recording during optical recording
US5420611A (en) * 1992-06-29 1995-05-30 Eastman Kodak Company Apparatus and method for eliminating feedback noise in laser thermal printing
WO2025153526A1 (en) 2024-01-15 2025-07-24 Technology Investments And Management S.L. Wireless music token and cloud

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1903822C3 (de) * 1969-01-23 1973-12-13 Ted Bildplatten Ag Aeg-Telefunkenteldec, Zug (Schweiz) Vorrichtung zur Wiedergabe auf einem Trager gespeicherter Signale, Aufzeichnungs verfahren für einen Trager sowie Trager zur Wiedergabe mit der Vorrichtung
NL7312139A (cs) * 1972-09-08 1974-03-12

Also Published As

Publication number Publication date
US4005259A (en) 1977-01-25
GB1493081A (en) 1977-11-23
NL7501444A (nl) 1975-08-14
SE402031B (sv) 1978-06-12
ATA105075A (de) 1978-04-15
DE2505795A1 (de) 1975-08-14
FR2260912A1 (cs) 1975-09-05
JPS5760693B2 (cs) 1982-12-21
JPS50112056A (cs) 1975-09-03
CA1053369A (en) 1979-04-24
AT346921B (de) 1978-12-11
FR2260912B1 (cs) 1982-08-27
AU7805075A (en) 1976-08-12
DE2505795C2 (de) 1985-04-25

Similar Documents

Publication Publication Date Title
SE7501465L (cs)
DE3364892D1 (en) Optical information processor
EP0077642A3 (en) Three beam optical memory system
GB1285999A (en) Recorder and reproducer system
GB1448239A (en) Apparatus arrnaged to play back recorded information
JPS57147148A (en) Information reproducer with magnetooptic system
CA2025311A1 (en) Optical head
EP0305979A3 (en) Optical recording and reproducing system using optical recording medium
GB1372082A (en) Record and playback apparatus for pulse width modulated record
EP0588385A3 (en) Recording/reproducing apparatus of optical card
GB1351202A (en) Method of and means for halographically recording and reproducing information
GB1362578A (en) Information storage systems
JPS647327A (en) Method and apparatus for optical information recording
KR880014532A (ko) 광자기 디스크 재생장치
EP0357419A3 (en) Optical data recording and readout apparatus
EP0384358A3 (en) Optical recording and playback system of dual light source type
GB1285108A (en) Method and device for reproducing signals stored on a transparent medium
JPS55125546A (en) Information recorder
JPS643818A (en) Optical recording and reproducing device
JPS57167142A (en) Optical recording and reproducing device
JPS6417234A (en) Optical information recording method and information recording medium
ES396427A1 (es) Perfeccionamientos en sistemas para producir un registro deinformacion.
FR2440134A1 (fr) Procede et dispositif d&#39;enregistrement et de reproduction d&#39;un signal video
JPS57203233A (en) Optical recorder and reproducer
GB1462792A (en) Apparatus for reading video information

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 7501465-4

Effective date: 19920904

Format of ref document f/p: F