NL7103233A - - Google Patents

Info

Publication number
NL7103233A
NL7103233A NL7103233A NL7103233A NL7103233A NL 7103233 A NL7103233 A NL 7103233A NL 7103233 A NL7103233 A NL 7103233A NL 7103233 A NL7103233 A NL 7103233A NL 7103233 A NL7103233 A NL 7103233A
Authority
NL
Netherlands
Application number
NL7103233A
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 filed Critical
Priority to NL7103233A priority Critical patent/NL7103233A/xx
Priority to ZA720928A priority patent/ZA72928B/en
Priority to DE19722209761 priority patent/DE2209761C3/en
Priority to JP47023275A priority patent/JPS5213733B1/ja
Priority to NO740/72A priority patent/NO138162C/en
Priority to DK107272AA priority patent/DK133449B/en
Priority to CH1453273A priority patent/CH558052A/en
Priority to CA136,517A priority patent/CA953419A/en
Priority to CH336872A priority patent/CH558053A/en
Priority to SE7202924A priority patent/SE396493B/en
Priority to IT67733/72A priority patent/IT952934B/en
Priority to GB1079172A priority patent/GB1387304A/en
Priority to BE780451A priority patent/BE780451A/en
Priority to ES400596A priority patent/ES400596A1/en
Priority to FR7208626A priority patent/FR2129626A5/fr
Publication of NL7103233A publication Critical patent/NL7103233A/xx
Priority to US00382482A priority patent/US3855426A/en
Priority to ES427857A priority patent/ES427857A1/en
Priority to US05/547,099 priority patent/US3999009A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/7605—Television signal recording on discs or drums
    • 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
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • 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
    • 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
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1372—Lenses
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing
NL7103233A 1971-03-11 1971-03-11 NL7103233A (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
NL7103233A NL7103233A (en) 1971-03-11 1971-03-11
ZA720928A ZA72928B (en) 1971-03-11 1972-02-14 Disc-shaped information carrier which contains spirally arranged sound and/or image signals coded in optical form
DE19722209761 DE2209761C3 (en) 1971-03-11 1972-03-01 Disc-shaped information carrier with at least two spiral-shaped tracks read out by a beam and a device for detecting an information carrier
SE7202924A SE396493B (en) 1971-03-11 1972-03-08 DISC SHAPED INFORMATION CARRIER
IT67733/72A IT952934B (en) 1971-03-11 1972-03-08 INFORMATION SUPPORT DISK CONTAINING SOUND OR VIDEO SIGNALS ARRANGED IN A SPIRAL, OPTICALLY CODED
DK107272AA DK133449B (en) 1971-03-11 1972-03-08 Disc-shaped information carrier containing in spiral form arranged sound and / or image signals in optical code, and apparatus for reading such an information carrier.
CH1453273A CH558052A (en) 1971-03-11 1972-03-08 READING DEVICE FOR READING A DISC-SHAPED INFORMATION CARRIER.
CA136,517A CA953419A (en) 1971-03-11 1972-03-08 Disc-shaped information carrier which contains spirally arranged sound and/or image signals coded in optical form
CH336872A CH558053A (en) 1971-03-11 1972-03-08 PLATE-SHAPED INFORMATION CARRIER.
JP47023275A JPS5213733B1 (en) 1971-03-11 1972-03-08
NO740/72A NO138162C (en) 1971-03-11 1972-03-08 PLATE-SHAPED INFORMATION CARRIER AND DEVICE FOR READING THIS
GB1079172A GB1387304A (en) 1971-03-11 1972-03-08 Information carrier of disc form for sound and/or video signals
BE780451A BE780451A (en) 1971-03-11 1972-03-09 INFORMATION CARRIER IN DISC FORM, CONTAINING VIDEO SIGNALS AND / OR SOUND SIGNALS RANGED IN SPIRAL AND OPTICALLY CODED
ES400596A ES400596A1 (en) 1971-03-11 1972-03-09 Information carrier of disc form for sound and/or video signals
FR7208626A FR2129626A5 (en) 1971-03-11 1972-03-13
US00382482A US3855426A (en) 1971-03-11 1973-07-25 Video disc recording and optical playback system therefor
ES427857A ES427857A1 (en) 1971-03-11 1974-07-01 Information carrier of disc form for sound and/or video signals
US05/547,099 US3999009A (en) 1971-03-11 1975-02-05 Apparatus for playing a transparent optically encoded multilayer information carrying disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7103233A NL7103233A (en) 1971-03-11 1971-03-11

Publications (1)

Publication Number Publication Date
NL7103233A true NL7103233A (en) 1972-09-13

Family

ID=19812661

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7103233A NL7103233A (en) 1971-03-11 1971-03-11

Country Status (13)

Country Link
JP (1) JPS5213733B1 (en)
BE (1) BE780451A (en)
CA (1) CA953419A (en)
CH (1) CH558053A (en)
DK (1) DK133449B (en)
ES (2) ES400596A1 (en)
FR (1) FR2129626A5 (en)
GB (1) GB1387304A (en)
IT (1) IT952934B (en)
NL (1) NL7103233A (en)
NO (1) NO138162C (en)
SE (1) SE396493B (en)
ZA (1) ZA72928B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4161752A (en) * 1977-06-28 1979-07-17 International Business Machines Corporation High density video disk having two pit depths
NL7803517A (en) * 1978-04-03 1979-10-05 Philips Nv RECORD CARRIER WITH AN OPTICALLY READABLE PHASE STRUCTURE AND DEVICE FOR READING.
FR2442487A2 (en) * 1978-11-21 1980-06-20 Thomson Brandt Automatic focussing for optical reading of video disc - using electromagnetic assembly with windings to control lens position
JPH0665950U (en) * 1991-07-22 1994-09-16 勉 宮崎 Optical reader
FR2750528A1 (en) * 1996-06-28 1998-01-02 Thomson Multimedia Sa OPTICAL DISC COMPATIBLE WITH TWO DIFFERENT READING SYSTEMS

Also Published As

Publication number Publication date
JPS5213733B1 (en) 1977-04-16
DE2209761A1 (en) 1972-09-21
DE2209761B2 (en) 1976-02-12
FR2129626A5 (en) 1972-10-27
CH558053A (en) 1975-01-15
NO138162B (en) 1978-04-03
GB1387304A (en) 1975-03-12
ZA72928B (en) 1973-09-26
DK133449B (en) 1976-05-17
IT952934B (en) 1973-07-30
BE780451A (en) 1972-09-11
ES427857A1 (en) 1977-07-01
CA953419A (en) 1974-08-20
NO138162C (en) 1978-07-12
SE396493B (en) 1977-09-19
DK133449C (en) 1977-03-14
ES400596A1 (en) 1975-07-16

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