NL70278C - - Google Patents
Info
- Publication number
- NL70278C NL70278C NL70278DA NL70278C NL 70278 C NL70278 C NL 70278C NL 70278D A NL70278D A NL 70278DA NL 70278 C NL70278 C NL 70278C
- Authority
- NL
- Netherlands
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
- H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US276594A US2269540A (en) | 1939-05-31 | 1939-05-31 | Television signal-translating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL70278C true NL70278C (it) |
Family
ID=23057291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL70278D NL70278C (it) | 1939-05-31 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2269540A (it) |
| FR (1) | FR864885A (it) |
| NL (1) | NL70278C (it) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2550960A (en) * | 1947-05-21 | 1951-05-01 | Hazeltine Research Inc | Television receiver contrast and brightness control |
| NL80731C (it) * | 1952-02-21 | |||
| US2910550A (en) * | 1956-04-27 | 1959-10-27 | Bell Telephone Labor Inc | Wide-range automatic gain control |
| US2983787A (en) * | 1958-10-24 | 1961-05-09 | Gen Electric | Automatic gain control system for a television receiver |
-
0
- NL NL70278D patent/NL70278C/xx active
-
1939
- 1939-05-31 US US276594A patent/US2269540A/en not_active Expired - Lifetime
-
1940
- 1940-04-08 FR FR864885D patent/FR864885A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR864885A (fr) | 1941-05-07 |
| US2269540A (en) | 1942-01-13 |