FR751819A - Improvements to optical sound recording devices - Google Patents

Improvements to optical sound recording devices

Info

Publication number
FR751819A
FR751819A FR751819DA FR751819A FR 751819 A FR751819 A FR 751819A FR 751819D A FR751819D A FR 751819DA FR 751819 A FR751819 A FR 751819A
Authority
FR
France
Prior art keywords
recording devices
sound recording
optical sound
optical
devices
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
Arthur William Kingston
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.)
TANAR BRITISH CORP Ltd
Original Assignee
TANAR BRITISH CORP Ltd
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 TANAR BRITISH CORP Ltd filed Critical TANAR BRITISH CORP Ltd
Application granted granted Critical
Publication of FR751819A publication Critical patent/FR751819A/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
FR751819D 1932-03-05 1933-03-04 Improvements to optical sound recording devices Expired FR751819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB751819X 1932-03-05

Publications (1)

Publication Number Publication Date
FR751819A true FR751819A (en) 1933-09-11

Family

ID=10496344

Family Applications (1)

Application Number Title Priority Date Filing Date
FR751819D Expired FR751819A (en) 1932-03-05 1933-03-04 Improvements to optical sound recording devices

Country Status (1)

Country Link
FR (1) FR751819A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694107A (en) * 1948-01-02 1954-11-09 Armour Res Found Magnetic recorder for use with motion-picture projectors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694107A (en) * 1948-01-02 1954-11-09 Armour Res Found Magnetic recorder for use with motion-picture projectors

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