BE476128A - - Google Patents
Info
- Publication number
- BE476128A BE476128A BE476128DA BE476128A BE 476128 A BE476128 A BE 476128A BE 476128D A BE476128D A BE 476128DA BE 476128 A BE476128 A BE 476128A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
- H01J21/18—Tubes with a single discharge path having magnetic control means; having both magnetic and electrostatic control means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/57—Control of contrast or brightness
- H04N5/58—Control of contrast or brightness in dependence upon ambient light
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
- Closed-Circuit Television Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB260215X | 1939-02-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE476128A true BE476128A (US06623731-20030923-C00012.png) |
Family
ID=10237115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE476128D BE476128A (US06623731-20030923-C00012.png) | 1939-02-07 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE476128A (US06623731-20030923-C00012.png) |
| CH (1) | CH260215A (US06623731-20030923-C00012.png) |
| FR (1) | FR862784A (US06623731-20030923-C00012.png) |
| GB (1) | GB524672A (US06623731-20030923-C00012.png) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH230613A (de) * | 1939-11-08 | 1944-01-15 | Ges Foerderung Forschung Technische Physik Eth Zuerich | Anordnung zur Wiedergabe eines Fernsehbildes. |
| US2635141A (en) * | 1949-11-30 | 1953-04-14 | Rca Corp | Color television receiver registration system |
| DE1000438B (de) * | 1955-05-12 | 1957-01-10 | Siemens Ag | Schaltung zur Erzeugung einer von den Raumlichtverhaeltnissen abhaengigen Regelspannung fuer Fernsehempfaenger |
| DE1014159B (de) * | 1956-04-25 | 1957-08-22 | Telefunken Gmbh | Schaltungsanordnung zur Kontrastregelung in Fernsehempfaengern |
| DE1027236B (de) * | 1957-03-14 | 1958-04-03 | Metz Transformatoren & App | Lichtgesteuerte Fernsteuereinrichtung fuer ein Fernsehgeraet |
| DE1177675B (de) * | 1958-01-25 | 1964-09-10 | Saba Gmbh | Anordnung zur selbsttaetigen, raumlicht-abhaengigen Regelung des Kontrastes und der Bildhelligkeit von Fernsehempfangsgeraeten |
| NL278224A (US06623731-20030923-C00012.png) * | 1961-05-10 | |||
| US8032084B2 (en) | 2001-07-18 | 2011-10-04 | Data Transfer & Communications Limited | Data security device |
-
0
- BE BE476128D patent/BE476128A/xx unknown
-
1939
- 1939-02-07 GB GB4014/39A patent/GB524672A/en not_active Expired
-
1940
- 1940-01-08 FR FR862784D patent/FR862784A/fr not_active Expired
-
1947
- 1947-01-24 CH CH260215D patent/CH260215A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR862784A (fr) | 1941-03-14 |
| GB524672A (en) | 1940-08-12 |
| CH260215A (de) | 1949-02-28 |
