GB434376A - Improvements in the photographic recording of sound impulses - Google Patents

Improvements in the photographic recording of sound impulses

Info

Publication number
GB434376A
GB434376A GB14329/34A GB1432934A GB434376A GB 434376 A GB434376 A GB 434376A GB 14329/34 A GB14329/34 A GB 14329/34A GB 1432934 A GB1432934 A GB 1432934A GB 434376 A GB434376 A GB 434376A
Authority
GB
United Kingdom
Prior art keywords
records
impulses
photographic recording
mask
lens
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
GB14329/34A
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
Publication of GB434376A publication Critical patent/GB434376A/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

Landscapes

  • Toys (AREA)

Abstract

434,376. Optical sound recording apparatus. RADIO CORPORATION OF AMERICA, 30, Rockfeller Plaza, New York, U.S.A. May 11, 1934, No. 14329. Convention date, June 8, 1933. [Class 40 (ii)] In the photographic recording of sound, a light beam is moved in one direction in accordance with the impulses to be recorded and in a different direction in accordance with the envelope of these impulses. The records may be made by projecting on to a film 19, light emitted from a lamp 10 through a condenser 11, a mask 12 and lens 13, and reflected by an horizontally oscillating mirror 14 through a lens 15, slit 16 and optical system 17, 18. The mask 12 is vertically oscillated in response to the amplitude of the sounds to minimize ground noise, two records such as A, B, Fig. 4, being made. The records are reproduced by the apparatus described in Specification 406,872.
GB14329/34A 1933-06-08 1934-05-11 Improvements in the photographic recording of sound impulses Expired GB434376A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US434376XA 1933-06-08 1933-06-08

Publications (1)

Publication Number Publication Date
GB434376A true GB434376A (en) 1935-08-30

Family

ID=21927164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14329/34A Expired GB434376A (en) 1933-06-08 1934-05-11 Improvements in the photographic recording of sound impulses

Country Status (1)

Country Link
GB (1) GB434376A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741841C (en) * 1936-09-19 1943-11-18 Klangfilm G M B H Multi-channel recording of tones or sound streams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741841C (en) * 1936-09-19 1943-11-18 Klangfilm G M B H Multi-channel recording of tones or sound streams

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