GB371952A - Improvements in or relating to apparatus for the electrical reproduction of marking such as sound or picture records with the aid of light - Google Patents
Improvements in or relating to apparatus for the electrical reproduction of marking such as sound or picture records with the aid of lightInfo
- Publication number
- GB371952A GB371952A GB2471230A GB2471230A GB371952A GB 371952 A GB371952 A GB 371952A GB 2471230 A GB2471230 A GB 2471230A GB 2471230 A GB2471230 A GB 2471230A GB 371952 A GB371952 A GB 371952A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- sound
- reflector
- picture
- aid
- 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
- Optical Communication System (AREA)
Abstract
371,952. Reproducing sound records ; copying-telegraphy. GRAMOPHONE CO., Ltd., Hayes, HEAL, H., 24, Dane Road, Southall, both in Middlesex, and BROWNE, C. O., 258, Monk's Drive, West Acton, London. June 18, 1931, No. 24712/30. [Class 40 (ii).] Apparatus for the electrical reproduction of sound or picture records with the aid of light reflected from the surface 1 of the record comprises a reflector 12, curved in the form of a right parabolic prism, which directs on to a light - sensitive cell 10 the modulated light reflected from the record whether such light is regular as shown by rays A, B or scattered as shown by rays C, D. The space between the point of incidence of the beam of light from the source 5 and the cell 10 is substantially enclosed by the reflector, and the point of incidence is substantially on the focal line of the reflector. In the case of picture reproduction, the electrical impulses from the cell may be transmitted either by wires or wirelessly to a distance and there reconverted into images of the original picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2471230A GB371952A (en) | 1931-06-18 | 1931-06-18 | Improvements in or relating to apparatus for the electrical reproduction of marking such as sound or picture records with the aid of light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2471230A GB371952A (en) | 1931-06-18 | 1931-06-18 | Improvements in or relating to apparatus for the electrical reproduction of marking such as sound or picture records with the aid of light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB371952A true GB371952A (en) | 1932-05-05 |
Family
ID=10216043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2471230A Expired GB371952A (en) | 1931-06-18 | 1931-06-18 | Improvements in or relating to apparatus for the electrical reproduction of marking such as sound or picture records with the aid of light |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB371952A (en) |
-
1931
- 1931-06-18 GB GB2471230A patent/GB371952A/en not_active Expired
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