GB508377A - Improvements in or relating to television or other signal transmission systems - Google Patents
Improvements in or relating to television or other signal transmission systemsInfo
- Publication number
- GB508377A GB508377A GB35791/37A GB3579137A GB508377A GB 508377 A GB508377 A GB 508377A GB 35791/37 A GB35791/37 A GB 35791/37A GB 3579137 A GB3579137 A GB 3579137A GB 508377 A GB508377 A GB 508377A
- Authority
- GB
- United Kingdom
- Prior art keywords
- television
- relating
- signal transmission
- transmission systems
- systems
- 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
Classifications
-
- 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
-
- 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)
- Picture Signal Circuits (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35791/37A GB508377A (en) | 1937-12-24 | 1937-12-24 | Improvements in or relating to television or other signal transmission systems |
GB36150/38A GB512109A (en) | 1937-12-24 | 1937-12-24 | Improvements in or relating to television or other signal transmission systems |
US247163A US2244240A (en) | 1937-12-24 | 1938-12-22 | Direct current inserting device |
FR847974D FR847974A (en) | 1937-12-24 | 1938-12-23 | Improvements to transmitting systems for television or other signals |
DEE2332D DE888563C (en) | 1937-12-24 | 1938-12-24 | Circuit arrangement for reintroducing the direct current component into electrical signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35791/37A GB508377A (en) | 1937-12-24 | 1937-12-24 | Improvements in or relating to television or other signal transmission systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB508377A true GB508377A (en) | 1939-06-26 |
Family
ID=10381590
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35791/37A Expired GB508377A (en) | 1937-12-24 | 1937-12-24 | Improvements in or relating to television or other signal transmission systems |
GB36150/38A Expired GB512109A (en) | 1937-12-24 | 1937-12-24 | Improvements in or relating to television or other signal transmission systems |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36150/38A Expired GB512109A (en) | 1937-12-24 | 1937-12-24 | Improvements in or relating to television or other signal transmission systems |
Country Status (4)
Country | Link |
---|---|
US (1) | US2244240A (en) |
DE (1) | DE888563C (en) |
FR (1) | FR847974A (en) |
GB (2) | GB508377A (en) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2445040A (en) * | 1943-05-13 | 1948-07-13 | Rca Corp | Dark spot corrector |
BE464760A (en) * | 1944-12-26 | |||
US2543037A (en) * | 1946-01-07 | 1951-02-27 | Farnsworth Res Corp | Television receiver |
US2548436A (en) * | 1946-01-25 | 1951-04-10 | Hazeltine Corp | Television receiver background control circuit |
US2550178A (en) * | 1946-11-21 | 1951-04-24 | Rca Corp | Direct current reinsertion circuit for television systems |
US2525106A (en) * | 1946-11-21 | 1950-10-10 | Rca Corp | Electronic keyer for direct current restoration |
US2554317A (en) * | 1946-12-18 | 1951-05-22 | Rca Corp | Clamp circuit |
US2546338A (en) * | 1947-05-13 | 1951-03-27 | Du Mont Allen B Lab Inc | Circuit for minimizing transients during switching between two video channels |
US2539454A (en) * | 1947-10-02 | 1951-01-30 | Farnsworth Television & Radio | Picture signal mixer circuit |
BE486285A (en) * | 1947-12-13 | |||
GB688200A (en) * | 1948-07-15 | 1953-03-04 | Emi Ltd | Improvements relating to television transmitting systems |
AT29106B (en) * | 1948-08-10 | 1907-07-10 | Alois Dichtl | Process for the preparation of a fertilizer for rats, mice and the like. like |
NL150569B (en) * | 1948-12-18 | Bestobell Establishment | CONDENSATION TRAY WITH BIMETAL CONTROLLED VALVE. | |
US2609443A (en) * | 1948-12-29 | 1952-09-02 | Rca Corp | Keyed automatic gain control |
GB666289A (en) * | 1949-05-19 | 1952-02-06 | Emi Ltd | Improvements in or relating to television transmission systems |
NL82256C (en) * | 1950-11-09 | |||
NL174245B (en) * | 1951-12-05 | Saint Gobain | DEVICE FOR HARDENING PRE-CURVED GLASS SHEETS. | |
US2828356A (en) * | 1951-12-07 | 1958-03-25 | Rca Corp | Clamped synchronizing signal separator |
GB777803A (en) * | 1953-01-15 | 1957-06-26 | Pye Ltd | Improvements in or relating to television receivers |
GB753424A (en) * | 1953-09-08 | 1956-07-25 | Standard Telephones Cables Ltd | An arrangement for suppressing the direct current component in television signals |
US3259760A (en) * | 1963-11-07 | 1966-07-05 | Massachusetts Inst Technology | Peak holding circuit |
US3492594A (en) * | 1966-07-11 | 1970-01-27 | Cohu Electronics Inc | D.c. restorer amplifier circuit |
-
1937
- 1937-12-24 GB GB35791/37A patent/GB508377A/en not_active Expired
- 1937-12-24 GB GB36150/38A patent/GB512109A/en not_active Expired
-
1938
- 1938-12-22 US US247163A patent/US2244240A/en not_active Expired - Lifetime
- 1938-12-23 FR FR847974D patent/FR847974A/en not_active Expired
- 1938-12-24 DE DEE2332D patent/DE888563C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2244240A (en) | 1941-06-03 |
GB512109A (en) | 1939-08-29 |
FR847974A (en) | 1939-10-19 |
DE888563C (en) | 1953-09-03 |
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