FR845003A - Modulation indicator for sound film recording devices - Google Patents

Modulation indicator for sound film recording devices

Info

Publication number
FR845003A
FR845003A FR845003DA FR845003A FR 845003 A FR845003 A FR 845003A FR 845003D A FR845003D A FR 845003DA FR 845003 A FR845003 A FR 845003A
Authority
FR
France
Prior art keywords
recording devices
sound film
film recording
modulation indicator
modulation
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)
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of FR845003A publication Critical patent/FR845003A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
FR845003D 1937-10-25 1938-10-21 Modulation indicator for sound film recording devices Expired FR845003A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE845003X 1937-10-25

Publications (1)

Publication Number Publication Date
FR845003A true FR845003A (en) 1939-08-09

Family

ID=6774675

Family Applications (1)

Application Number Title Priority Date Filing Date
FR845003D Expired FR845003A (en) 1937-10-25 1938-10-21 Modulation indicator for sound film recording devices

Country Status (1)

Country Link
FR (1) FR845003A (en)

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