GB519282A - Improvements in sound recording - Google Patents
Improvements in sound recordingInfo
- Publication number
- GB519282A GB519282A GB29667/38A GB2966738A GB519282A GB 519282 A GB519282 A GB 519282A GB 29667/38 A GB29667/38 A GB 29667/38A GB 2966738 A GB2966738 A GB 2966738A GB 519282 A GB519282 A GB 519282A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- film
- ribbon
- sound
- oct
- 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
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Camera Data Copying Or Recording (AREA)
Abstract
519,282. Optical sound-recording. KODAK, Ltd. Oct. 13, 1938, No. 29667. Convention date, Oct. 13, 1937. [Class 40 (ii)] A variable area class B push-pull sound record is made on a film 30 by projecting thereon a shadow image of the single ribbon 14 of a light valve, for example by a lens system 23; 26 so that the edges of the image in zero position exactly coincide with the margins 33, 34 of the sound track area of the film, and masking the remainder of the film by a stationary mask 22 which may be arranged as,in-Fig. 1 in the place of the ribbon so as exactly to overshadow the remainder of the film not covered by the image of the ribbon; or as in Figs. 3 to 5 (not shown), the mask may be arranged in the plane of an intermediate image of the ribbon. A slit 25 limits the height of the image.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US168779A US2196735A (en) | 1937-10-13 | 1937-10-13 | Sound recording |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB519282A true GB519282A (en) | 1940-03-20 |
Family
ID=22612888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29667/38A Expired GB519282A (en) | 1937-10-13 | 1938-10-13 | Improvements in sound recording |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2196735A (en) |
| GB (1) | GB519282A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2875017A (en) * | 1953-11-25 | 1959-02-24 | Southwestern Ind Electronics C | Vibration recording device |
-
1937
- 1937-10-13 US US168779A patent/US2196735A/en not_active Expired - Lifetime
-
1938
- 1938-10-13 GB GB29667/38A patent/GB519282A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2196735A (en) | 1940-04-09 |
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