BE578175A - - Google Patents
Info
- Publication number
- BE578175A BE578175A BE578175DA BE578175A BE 578175 A BE578175 A BE 578175A BE 578175D A BE578175D A BE 578175DA BE 578175 A BE578175 A BE 578175A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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)
- Transforming Electric Information Into Light Information (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP20593A DE1076736B (de) | 1958-04-29 | 1958-04-29 | Schaltungsanordnung zur selbsttaetigen raumlichtabhaengigen Nachregelung der Grundhelligkeit und des Kontrastes eines Fernsehempfaengers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE578175A true BE578175A (xx) |
Family
ID=7367901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE578175D BE578175A (xx) | 1958-04-29 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3025345A (xx) |
| BE (1) | BE578175A (xx) |
| DE (1) | DE1076736B (xx) |
| FR (1) | FR1223058A (xx) |
| GB (1) | GB921014A (xx) |
| NL (1) | NL238629A (xx) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1093814B (de) * | 1959-04-07 | 1960-12-01 | Standard Elektrik Lorenz Ag | Verfahren zur automatischen Kontrastregelung von Fernsehgeraeten |
| US3293483A (en) * | 1962-01-08 | 1966-12-20 | Siemens Ag | Radiation controlled electron radiation source |
| DE1249325B (de) * | 1960-12-30 | 1967-09-07 | Radio Corporation Of America, New York, N. Y. (V. St. A.) | Schaltungsanordnung :ur raumlichtabhängigen Steuerung des Contrastes und der Helligkeit in einem ernsehempfänger |
| US3147341A (en) * | 1961-04-24 | 1964-09-01 | Gen Electric | Automatic brightness-contrast control using photoresistive element to control brightness and agc voltages in response to ambinent light |
| US3165582A (en) * | 1961-12-29 | 1965-01-12 | Magnavox Co | Automatic contrast and brilliance control system for television receivers |
| US3214517A (en) * | 1962-08-06 | 1965-10-26 | Wells Gardner Electronics | Automatic control circuit for television receivers |
| US3258532A (en) * | 1963-03-12 | 1966-06-28 | Hazeltine Research Inc | Automatic-picture-control circuit for a television receiver |
| DE1207431B (de) * | 1963-10-18 | 1965-12-23 | Philips Patentverwaltung | Geraet zur Wiedergabe farbiger Bilder |
| US3441663A (en) * | 1965-05-04 | 1969-04-29 | Photo Electronics Corp | Non-linear amplifiers and systems |
| US3813686A (en) * | 1972-11-27 | 1974-05-28 | Magnovox Co | Ambient light responsive control of brightness, contrast and color saturation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2264172A (en) * | 1939-08-25 | 1941-11-25 | John C Batchelor | Television receiver |
| FR1066763A (fr) * | 1952-11-22 | 1954-06-09 | Procédé et dispositif pour le réglage automatique de la luminosité d'un récepteur de télévision en fonction de l'intensité de la lumière ambiante | |
| DE1764663U (de) * | 1958-01-25 | 1958-04-10 | Saba Gmbh | Anordnung zur selbsttaetigen lichtabhaengigen regelung mittels fotoleitern. |
-
0
- NL NL238629D patent/NL238629A/xx unknown
- BE BE578175D patent/BE578175A/xx unknown
-
1958
- 1958-04-29 DE DEP20593A patent/DE1076736B/de active Pending
-
1959
- 1959-03-26 US US802166A patent/US3025345A/en not_active Expired - Lifetime
- 1959-04-24 GB GB14068/59A patent/GB921014A/en not_active Expired
- 1959-04-29 FR FR793546A patent/FR1223058A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL238629A (xx) | |
| GB921014A (en) | 1963-03-13 |
| DE1076736B (de) | 1960-03-03 |
| FR1223058A (fr) | 1960-06-15 |
| US3025345A (en) | 1962-03-13 |