FR948451A - Sound recording and reproduction device - Google Patents

Sound recording and reproduction device

Info

Publication number
FR948451A
FR948451A FR948451DA FR948451A FR 948451 A FR948451 A FR 948451A FR 948451D A FR948451D A FR 948451DA FR 948451 A FR948451 A FR 948451A
Authority
FR
France
Prior art keywords
reproduction device
sound recording
sound
recording
reproduction
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
Other languages
French (fr)
Inventor
Etienne-Marcel Prot
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
Application granted granted Critical
Publication of FR948451A publication Critical patent/FR948451A/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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
    • G01D15/34—Recording surfaces
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G11B27/13—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer
    • 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
FR948451D 1947-06-11 1947-06-11 Sound recording and reproduction device Expired FR948451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR948451T 1947-06-11

Publications (1)

Publication Number Publication Date
FR948451A true FR948451A (en) 1949-08-02

Family

ID=9474033

Family Applications (1)

Application Number Title Priority Date Filing Date
FR948451D Expired FR948451A (en) 1947-06-11 1947-06-11 Sound recording and reproduction device

Country Status (1)

Country Link
FR (1) FR948451A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE894626C (en) * 1951-03-14 1953-10-26 Eugen Beyer Phonogram carrier for recording and playback in line writing
DE1145366B (en) * 1956-10-19 1963-03-14 Licentia Gmbh Device for registering the functional dependence of a measured quantity on another quantity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE894626C (en) * 1951-03-14 1953-10-26 Eugen Beyer Phonogram carrier for recording and playback in line writing
DE1145366B (en) * 1956-10-19 1963-03-14 Licentia Gmbh Device for registering the functional dependence of a measured quantity on another quantity

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