ES400336A1 - 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
ES400336A1
ES400336A1 ES400336A ES400336A ES400336A1 ES 400336 A1 ES400336 A1 ES 400336A1 ES 400336 A ES400336 A ES 400336A ES 400336 A ES400336 A ES 400336A ES 400336 A1 ES400336 A1 ES 400336A1
Authority
ES
Spain
Prior art keywords
sound
video signals
information carrier
disc form
single plane
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
ES400336A
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 ES400336A1 publication Critical patent/ES400336A1/en
Expired 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
    • G11B7/004—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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/013—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track for discrete information, i.e. where each information unit is stored in a distinct discrete location, e.g. digital information formats within a data block or sector
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • 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

Abstract

Improvements introduced into information carriers or carriers provided with a spiral structure in which sound and/or image information is stored in the form of frequency modulated or phase modulated signals, characterized by the fact that the structure is made up of blocks of variable lengths arranged in a single plane and separated by areas of variable lengths that are also arranged in a single plane. (Machine-translation by Google Translate, not legally binding)
ES400336A 1971-03-04 1972-03-02 Information carrier of disc form for sound and/or video signals Expired ES400336A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7102863A NL7102863A (en) 1971-03-04 1971-03-04

Publications (1)

Publication Number Publication Date
ES400336A1 true ES400336A1 (en) 1975-06-16

Family

ID=19812612

Family Applications (1)

Application Number Title Priority Date Filing Date
ES400336A Expired ES400336A1 (en) 1971-03-04 1972-03-02 Information carrier of disc form for sound and/or video signals

Country Status (15)

Country Link
JP (2) JPS544603B1 (en)
AR (2) AR195275A1 (en)
AT (1) AT342122B (en)
AU (1) AU470672B2 (en)
BE (1) BE780146A (en)
BR (1) BR7201206D0 (en)
CA (1) CA1023855A (en)
CH (2) CH553522A (en)
ES (1) ES400336A1 (en)
FR (1) FR2128576B1 (en)
GB (1) GB1391541A (en)
IT (1) IT952884B (en)
NL (1) NL7102863A (en)
NO (1) NO139905C (en)
ZA (1) ZA721137B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197495A5 (en) * 1972-08-25 1974-03-22 Thomson Csf
NL7212015A (en) * 1972-09-04 1974-03-06
FR2235354A1 (en) * 1973-06-29 1975-01-24 Thomson Csf Photoelectric optical test sensor - measures displacement of a diffraction screen with constant spacing in the test sensor plane
NL7611567A (en) * 1976-10-20 1978-04-24 Philips Nv METHOD OF MAKING COPIES OF TRACKS OF INFORMATION ON CARRIERS.
BE871326A (en) * 1978-10-23 1979-04-17 Mca Disco Vision METHOD AND DEVICE FOR RECORDING AND REPRODUCING A VIDEO SIGNAL.

Also Published As

Publication number Publication date
JPS5732409B2 (en) 1982-07-10
ZA721137B (en) 1973-10-31
AU3945472A (en) 1973-08-30
AR195275A1 (en) 1973-09-28
CA1023855A (en) 1978-01-03
DE2208379B2 (en) 1976-10-28
CH553522A (en) 1974-08-30
CH552920A (en) 1974-08-15
AR203718A1 (en) 1975-10-15
NO139905B (en) 1979-02-19
FR2128576A1 (en) 1972-10-20
ATA166672A (en) 1977-07-15
JPS544603B1 (en) 1979-03-08
FR2128576B1 (en) 1980-03-14
AT342122B (en) 1978-03-10
AU470672B2 (en) 1973-08-30
BE780146A (en) 1972-09-04
JPS5452504A (en) 1979-04-25
NO139905C (en) 1979-05-30
NL7102863A (en) 1972-09-06
IT952884B (en) 1973-07-30
GB1391541A (en) 1975-04-23
BR7201206D0 (en) 1973-06-07
DE2208379A1 (en) 1972-09-14

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