FR862398A - Perfectionnements aux systèmes de transmission de signaux électriques - Google Patents
Perfectionnements aux systèmes de transmission de signaux électriquesInfo
- Publication number
- FR862398A FR862398A FR862398DA FR862398A FR 862398 A FR862398 A FR 862398A FR 862398D A FR862398D A FR 862398DA FR 862398 A FR862398 A FR 862398A
- Authority
- FR
- France
- Prior art keywords
- electrical signal
- signal transmission
- transmission systems
- systems
- electrical
- 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
- 230000008054 signal 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
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/52—Automatic gain control
-
- 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
-
- 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
- H04N5/18—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
- H04N5/185—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit for the black level
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Control Of Amplification And Gain Control (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30210/38A GB521744A (en) | 1938-10-19 | 1938-10-19 | Improvements in or relating to electric signal transmission systems |
Publications (1)
Publication Number | Publication Date |
---|---|
FR862398A true FR862398A (fr) | 1941-03-12 |
Family
ID=10304024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR862398D Expired FR862398A (fr) | 1938-10-19 | 1939-12-18 | Perfectionnements aux systèmes de transmission de signaux électriques |
Country Status (5)
Country | Link |
---|---|
US (1) | US2284085A (fr) |
DE (1) | DE836045C (fr) |
FR (1) | FR862398A (fr) |
GB (1) | GB521744A (fr) |
NL (1) | NL81368C (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE464760A (fr) * | 1944-12-26 | |||
US2550178A (en) * | 1946-11-21 | 1951-04-24 | Rca Corp | Direct current reinsertion circuit for television systems |
NL82308C (fr) * | 1949-06-04 | |||
US2829197A (en) * | 1951-02-16 | 1958-04-01 | Avco Mfg Corp | Noise limiter for television receiver |
US2907822A (en) * | 1952-04-17 | 1959-10-06 | Marconi Wireless Telegraph Co | Interference reduction in television and other communication systems |
-
1938
- 1938-10-19 GB GB30210/38A patent/GB521744A/en not_active Expired
-
1939
- 1939-10-26 US US301324A patent/US2284085A/en not_active Expired - Lifetime
- 1939-12-18 FR FR862398D patent/FR862398A/fr not_active Expired
-
1947
- 1947-12-29 NL NL137633A patent/NL81368C/xx active
-
1950
- 1950-09-21 DE DEE2160A patent/DE836045C/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE836045C (de) | 1952-04-07 |
US2284085A (en) | 1942-05-26 |
GB521744A (en) | 1940-05-30 |
NL81368C (fr) | 1956-05-15 |
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