FR822046A - Perfectionnement aux appareils photo-phonographiques - Google Patents

Perfectionnement aux appareils photo-phonographiques

Info

Publication number
FR822046A
FR822046A FR822046DA FR822046A FR 822046 A FR822046 A FR 822046A FR 822046D A FR822046D A FR 822046DA FR 822046 A FR822046 A FR 822046A
Authority
FR
France
Prior art keywords
phonographic
cameras
photo
further training
training
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
English (en)
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR822046A publication Critical patent/FR822046A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • 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
FR822046D 1936-05-29 1937-05-21 Perfectionnement aux appareils photo-phonographiques Expired FR822046A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82418A US2102778A (en) 1936-05-29 1936-05-29 Photophonographic apparatus
US82596A US2102777A (en) 1936-05-29 1936-05-29 Photophonographic apparatus

Publications (1)

Publication Number Publication Date
FR822046A true FR822046A (fr) 1937-12-18

Family

ID=41136893

Family Applications (1)

Application Number Title Priority Date Filing Date
FR822046D Expired FR822046A (fr) 1936-05-29 1937-05-21 Perfectionnement aux appareils photo-phonographiques

Country Status (2)

Country Link
US (2) US2102777A (fr)
FR (1) FR822046A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436671A (en) * 1943-12-14 1948-02-24 Rca Corp Optical system for sound recording
US2423256A (en) * 1943-12-22 1947-07-01 Rca Corp Monitoring system for optical sound recording

Also Published As

Publication number Publication date
US2102778A (en) 1937-12-21
US2102777A (en) 1937-12-21

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