GB317778A - Improvements in or relating to methods of and apparatus for picture transmission, television or the like - Google Patents
Improvements in or relating to methods of and apparatus for picture transmission, television or the likeInfo
- Publication number
- GB317778A GB317778A GB5138/29A GB513829A GB317778A GB 317778 A GB317778 A GB 317778A GB 5138/29 A GB5138/29 A GB 5138/29A GB 513829 A GB513829 A GB 513829A GB 317778 A GB317778 A GB 317778A
- Authority
- GB
- United Kingdom
- Prior art keywords
- accordance
- light
- condenser
- picture
- copying
- 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
- 230000005540 biological transmission Effects 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Facsimiles In General (AREA)
Abstract
317,778. Fulton, O., (Assignee of Fultograph Ges. Osterreich Apparate und Zubehor f³r Bild-Rundfunk und-Telegraphie). Aug. 22, 1928, [Convention date]. Copying-telegraphs.-In a copying-telegraph or television transmitter for use with a receiver not properly responsive to signal amplitudes, the energy fluctuations, produced or controlled by an exploring device, for example a light-sensitive cell 11, and varying in amplitude in accordance with the light and shade of the picture, are translated into signal impulses of time duration differing in accordance with the original amplitude. An electric condenser 30 is charged at uniform intervals through a commutator 14 to reduce a thermionic valve 12 to a non-conducting condition. The discharge of the condenser is controlled by the light-sensitive, cell so that the time during which the valve becomes conducting varies in accordance with the nature of the picture. The condenser is charged through a resistance 32 to prolong the charging-time. Reference has been directed by the Comptroller to Specifications 2,15,792, 230,075, 237,263, 275,675, 278,051, and 313,857.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT317778X | 1928-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB317778A true GB317778A (en) | 1930-05-15 |
Family
ID=3671482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5138/29A Expired GB317778A (en) | 1928-08-22 | 1929-02-15 | Improvements in or relating to methods of and apparatus for picture transmission, television or the like |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1902552A (en) |
| FR (1) | FR680530A (en) |
| GB (1) | GB317778A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3842312A (en) * | 1969-02-20 | 1974-10-15 | Ampex | Method of modulating a beam of electromagnetic radiation |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2435940A (en) * | 1946-05-17 | 1948-02-10 | Brown Instr Co | Safety control system for fuel burners |
| US3041460A (en) * | 1959-06-19 | 1962-06-26 | Acf Ind Inc | Multi-cell ir search system |
-
1929
- 1929-02-15 GB GB5138/29A patent/GB317778A/en not_active Expired
- 1929-03-16 US US347623A patent/US1902552A/en not_active Expired - Lifetime
- 1929-08-20 FR FR680530D patent/FR680530A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3842312A (en) * | 1969-02-20 | 1974-10-15 | Ampex | Method of modulating a beam of electromagnetic radiation |
Also Published As
| Publication number | Publication date |
|---|---|
| US1902552A (en) | 1933-03-21 |
| FR680530A (en) | 1930-05-01 |
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