DE3524048A1 - Laser-plattenspieler mit einer schutzblende - Google Patents

Laser-plattenspieler mit einer schutzblende

Info

Publication number
DE3524048A1
DE3524048A1 DE19853524048 DE3524048A DE3524048A1 DE 3524048 A1 DE3524048 A1 DE 3524048A1 DE 19853524048 DE19853524048 DE 19853524048 DE 3524048 A DE3524048 A DE 3524048A DE 3524048 A1 DE3524048 A1 DE 3524048A1
Authority
DE
Germany
Prior art keywords
plate
laser
diaphragm
mode
scanner
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.)
Withdrawn
Application number
DE19853524048
Other languages
German (de)
English (en)
Inventor
Hans-R Kuehn
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.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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 Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Priority to DE19853524048 priority Critical patent/DE3524048A1/de
Priority to EP86904794A priority patent/EP0230466B1/de
Priority to KR1019870700191A priority patent/KR910002753B1/ko
Priority to PCT/EP1986/000393 priority patent/WO1987000333A1/de
Priority to JP61504158A priority patent/JPS62502007A/ja
Priority to DE8686904794T priority patent/DE3669218D1/de
Priority to AT86904794T priority patent/ATE50659T1/de
Publication of DE3524048A1 publication Critical patent/DE3524048A1/de
Withdrawn legal-status Critical Current

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
    • G11B7/121—Protecting the head, e.g. against dust or impact with the record carrier
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
DE19853524048 1985-07-05 1985-07-05 Laser-plattenspieler mit einer schutzblende Withdrawn DE3524048A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE19853524048 DE3524048A1 (de) 1985-07-05 1985-07-05 Laser-plattenspieler mit einer schutzblende
EP86904794A EP0230466B1 (de) 1985-07-05 1986-07-02 Laser-plattenspieler mit einer schutzblende
KR1019870700191A KR910002753B1 (ko) 1985-07-05 1986-07-02 보호스크린을 갖춘 레이저-레코드 플레이어
PCT/EP1986/000393 WO1987000333A1 (fr) 1985-07-05 1986-07-02 Platine tourne-disques a laser pourvue d'un cache de protection
JP61504158A JPS62502007A (ja) 1985-07-05 1986-07-02 保護シ−ルドを備えたレ−ザデイスクプレ−ヤ
DE8686904794T DE3669218D1 (de) 1985-07-05 1986-07-02 Laser-plattenspieler mit einer schutzblende.
AT86904794T ATE50659T1 (de) 1985-07-05 1986-07-02 Laser-plattenspieler mit einer schutzblende.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853524048 DE3524048A1 (de) 1985-07-05 1985-07-05 Laser-plattenspieler mit einer schutzblende

Publications (1)

Publication Number Publication Date
DE3524048A1 true DE3524048A1 (de) 1987-01-08

Family

ID=6275025

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19853524048 Withdrawn DE3524048A1 (de) 1985-07-05 1985-07-05 Laser-plattenspieler mit einer schutzblende
DE8686904794T Expired - Fee Related DE3669218D1 (de) 1985-07-05 1986-07-02 Laser-plattenspieler mit einer schutzblende.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8686904794T Expired - Fee Related DE3669218D1 (de) 1985-07-05 1986-07-02 Laser-plattenspieler mit einer schutzblende.

Country Status (5)

Country Link
EP (1) EP0230466B1 (OSRAM)
JP (1) JPS62502007A (OSRAM)
KR (1) KR910002753B1 (OSRAM)
DE (2) DE3524048A1 (OSRAM)
WO (1) WO1987000333A1 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3921982A1 (de) * 1988-07-05 1990-01-11 Samsung Electronics Co Ltd Schutzschaltung fuer optische plattenabspielgeraete

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2639434A1 (de) * 1975-09-11 1977-03-31 Philips Nv Video-plattenspieler
DE2803887A1 (de) * 1977-02-10 1978-08-17 Philips Nv Videoplattenspieler

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8004379A (nl) * 1980-07-31 1982-03-01 Philips Nv Inrichting voor het met behulp van een stralingsbundel inschrijven en/of uitlezen van informatie op een roterende informatieschijf.
JPS57181401A (en) * 1981-05-01 1982-11-08 Toshiba Corp Optical information processor
JPS5971141A (ja) * 1982-10-14 1984-04-21 Mitsubishi Electric Corp 光学的信号読出し装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2639434A1 (de) * 1975-09-11 1977-03-31 Philips Nv Video-plattenspieler
DE2803887A1 (de) * 1977-02-10 1978-08-17 Philips Nv Videoplattenspieler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3921982A1 (de) * 1988-07-05 1990-01-11 Samsung Electronics Co Ltd Schutzschaltung fuer optische plattenabspielgeraete

Also Published As

Publication number Publication date
KR880700393A (ko) 1988-03-15
KR910002753B1 (ko) 1991-05-04
DE3669218D1 (de) 1990-04-05
EP0230466B1 (de) 1990-02-28
EP0230466A1 (de) 1987-08-05
WO1987000333A1 (fr) 1987-01-15
JPS62502007A (ja) 1987-08-06
JPH0427634B2 (OSRAM) 1992-05-12

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8110 Request for examination paragraph 44
8139 Disposal/non-payment of the annual fee