ES400596A1 - Information carrier of disc form for sound and/or video signals - Google Patents

Information carrier of disc form for sound and/or video signals

Info

Publication number
ES400596A1
ES400596A1 ES400596A ES400596A ES400596A1 ES 400596 A1 ES400596 A1 ES 400596A1 ES 400596 A ES400596 A ES 400596A ES 400596 A ES400596 A ES 400596A ES 400596 A1 ES400596 A1 ES 400596A1
Authority
ES
Spain
Prior art keywords
information
disc
information carrier
sound
track
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
Application number
ES400596A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES400596A1 publication Critical patent/ES400596A1/en
Expired legal-status Critical Current

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

Abstract

A disc-shaped information-carrying device containing optically encoded, coiled, image and/or sound signals characterized in that the information is recorded on at least two spiral tracks at different depths in the information carrier, and because the disc material between each track and the next track is optically transparent, allowing a radiation cover beam to be selectively focused on any information track from one side of the disc. (Machine-translation by Google Translate, not legally binding)
ES400596A 1971-03-11 1972-03-09 Information carrier of disc form for sound and/or video signals Expired ES400596A1 (en)

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
ES400596A1 true ES400596A1 (en) 1975-07-16

Family

ID=19812661

Family Applications (2)

Application Number Title Priority Date Filing Date
ES400596A Expired ES400596A1 (en) 1971-03-11 1972-03-09 Information carrier of disc form for sound and/or video signals
ES427857A Expired ES427857A1 (en) 1971-03-11 1974-07-01 Information carrier of disc form for sound and/or video signals

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES427857A Expired ES427857A1 (en) 1971-03-11 1974-07-01 Information carrier of disc form for sound and/or video signals

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
DK133449C (en) 1977-03-14
FR2129626A5 (en) 1972-10-27
CH558053A (en) 1975-01-15
IT952934B (en) 1973-07-30
SE396493B (en) 1977-09-19
BE780451A (en) 1972-09-11
NO138162B (en) 1978-04-03
ZA72928B (en) 1973-09-26
NO138162C (en) 1978-07-12
ES427857A1 (en) 1977-07-01
GB1387304A (en) 1975-03-12
DE2209761B2 (en) 1976-02-12
DK133449B (en) 1976-05-17
DE2209761A1 (en) 1972-09-21
NL7103233A (en) 1972-09-13
JPS5213733B1 (en) 1977-04-16
CA953419A (en) 1974-08-20

Similar Documents

Publication Publication Date Title
CS230373A2 (en) Device for record's disk carrier reading with optically coded signals
AT318023B (en) Device for reading out a disc-shaped information carrier which contains image and / or audio signals encoded in optical form
FR2130505A1 (en) Information recordings and recording and reproducing systems therefor
CA1033834A (en) Data record tracking using track identifying information in the gaps between recorded data groups
KE2552A (en) System for recording and/or reproducing four channel signals on a record disc
SE407866B (en) DISC FOR RECORDED VIDEO INFORMATION
NL177168C (en) METHOD FOR RECORDING A VIDEO SIGNAL AND RECORD CARRIER WITH VIDEO INFORMATION RECORDED ACCORDING TO THE METHOD AND AN APPARATUS FOR READING A RECORD CARRIER.
JPS56107336A (en) Video information playback device for video disk
ZA734788B (en) Record carrier on which information is recorded in an optical structure
ES413867A1 (en) Information playback system
CH558063A (en) MAGNETIC RECORDING AND / OR PLAYBACK DEVICE.
ES400596A1 (en) Information carrier of disc form for sound and/or video signals
BE787073A (en) SAFETY DEVICE FOR READING AND RECORDING DEVICE WITH MAGNETIC DISCS
HK8977A (en) Reproduction arrangement for reproducing information stored on a disc in a spiral groove
CA1005907A (en) Apparatus for reading a record carrier on which information is recorded in at least one track
IT1076067B (en) PROCEDURE FOR PREPARING GRAMOPHONE DISCS AND VIDEO DISCS IN RESIN CONTAINING NITRILE SATURATED, FOR RECORDING ON IT INFORMATION SIGNALS
CH543795A (en) Recording and playback device for a magnetizable recording medium with a spiral sound track
JPS5250702A (en) Optical information recording and reproduction apparatus
BE773819A (en) APPARATUS FOR RECORDING OR REPRODUCING MAGNETIC TAPES STORED IN CASSETTES.
CA1022676A (en) Apparatus for reading a record carrier in which information, for example, video and/or audio information, is recorded in at least one track
JPS5211942A (en) Hologram disc memory device
SU396003A1 (en) THERMOPLASTIC RECORDER
JPS51142221A (en) Information reproducing device
ES185027U (en) Toy projector of images and sound producer. (Machine-translation by Google Translate, not legally binding)
ES363259A1 (en) A toy phonograph device. (Machine-translation by Google Translate, not legally binding)