GB369564A - Apparatus for reproducing photographically recorded sound - Google Patents
Apparatus for reproducing photographically recorded soundInfo
- Publication number
- GB369564A GB369564A GB3830930A GB3830930A GB369564A GB 369564 A GB369564 A GB 369564A GB 3830930 A GB3830930 A GB 3830930A GB 3830930 A GB3830930 A GB 3830930A GB 369564 A GB369564 A GB 369564A
- Authority
- GB
- United Kingdom
- Prior art keywords
- records
- sound
- slits
- record
- slit
- 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
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
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
369,564. Optical sound-reproducing apparatus. OWENS, F. H., 2647, Broadway, New York, U.S.A. Dec. 19, 1930, No. 38309. [Class 40 (ii).] In photoelectric sound-reproducing apparatus, employing a film bearing a number of photographic sound records which can be reproduced simultaneously, means are provided for controlling reproduction from all the records individually or in any combination, comprising adjustable slits for varying the amount of light passing from a constant source or sources through each record, the slits each consisting of symmetrically adjustable upper and lower sliding shutters. The apparatus shown is adapted for use with a film 1 having four records on it, the film passing between a slit member (in the form of a prism 6 mounted in a plate 6a) and a plate 9 provided with four slits 10, one for each record. Light from a lamp 7 is concentrated on the slit 6 and passes through all the records and their respective slits 10. The four modulated beams act severally on photoelectric cells 14 .. 17, each mounted, together with a lens system 13, in a compartment of a casing 11. Behind each slit 10 is a pair of slidable shutters 23, by which the amount of light passing to each cell may be regulated so that the volume of sound from the records may be individually controlled or one or more put out of action if desired. A single photoelectric cell may be used, instead of separate cells for each record ; or a number of lamps may be provided instead of one common to all the records.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3830930A GB369564A (en) | 1930-12-19 | 1930-12-19 | Apparatus for reproducing photographically recorded sound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3830930A GB369564A (en) | 1930-12-19 | 1930-12-19 | Apparatus for reproducing photographically recorded sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB369564A true GB369564A (en) | 1932-03-21 |
Family
ID=10402610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3830930A Expired GB369564A (en) | 1930-12-19 | 1930-12-19 | Apparatus for reproducing photographically recorded sound |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB369564A (en) |
-
1930
- 1930-12-19 GB GB3830930A patent/GB369564A/en not_active Expired
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