FR989580A - Improvements in apparatus for magnetic recording and reproduction of sound - Google Patents

Improvements in apparatus for magnetic recording and reproduction of sound

Info

Publication number
FR989580A
FR989580A FR989580DA FR989580A FR 989580 A FR989580 A FR 989580A FR 989580D A FR989580D A FR 989580DA FR 989580 A FR989580 A FR 989580A
Authority
FR
France
Prior art keywords
reproduction
sound
magnetic recording
recording
magnetic
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR989580A publication Critical patent/FR989580A/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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/26—Driving record carriers by members acting directly or indirectly thereon
    • G11B15/34—Driving record carriers by members acting directly or indirectly thereon through non-slip drive means, e.g. sprocket
FR989580D 1948-10-19 1949-06-27 Improvements in apparatus for magnetic recording and reproduction of sound Expired FR989580A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US663449XA 1948-10-19 1948-10-19

Publications (1)

Publication Number Publication Date
FR989580A true FR989580A (en) 1951-09-11

Family

ID=22068895

Family Applications (1)

Application Number Title Priority Date Filing Date
FR989580D Expired FR989580A (en) 1948-10-19 1949-06-27 Improvements in apparatus for magnetic recording and reproduction of sound

Country Status (2)

Country Link
FR (1) FR989580A (en)
GB (1) GB663449A (en)

Also Published As

Publication number Publication date
GB663449A (en) 1951-12-19

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