GB537599A - Video-frequency signal-translating system - Google Patents
Video-frequency signal-translating systemInfo
- Publication number
- GB537599A GB537599A GB9842/40A GB984240A GB537599A GB 537599 A GB537599 A GB 537599A GB 9842/40 A GB9842/40 A GB 9842/40A GB 984240 A GB984240 A GB 984240A GB 537599 A GB537599 A GB 537599A
- Authority
- GB
- United Kingdom
- Prior art keywords
- video
- frequency signal
- translating system
- rectifier
- june
- 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
- H04N5/165—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)
- Transforming Light Signals Into Electric Signals (AREA)
- Television Signal Processing For Recording (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
537,599. Television. HAZELTINE CORPORATION. June 5, 1940, No. 9842. Convention date, June 9, 1939. [Class 40 (iii)] In order to stabilize " background-illumination " in a television receiver, the amplifying valve 21 feeding the image reproducer 18 has an output circuit 24 connected to a rectifier 26 arranged to introduce a bias in the input circuit of the valve 21 to which the unstabilized signal is fed from an amplifier 16 through a condenser 22. As shown, the connection between the output circuit 24 and the rectifier 26 is by way of a tapping 24a and a condenser 28. Specification 499,538 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US278316A US2254114A (en) | 1939-06-09 | 1939-06-09 | Video-frequency signal-translating system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB537599A true GB537599A (en) | 1941-06-27 |
Family
ID=23064527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9842/40A Expired GB537599A (en) | 1939-06-09 | 1940-06-05 | Video-frequency signal-translating system |
Country Status (3)
Country | Link |
---|---|
US (1) | US2254114A (en) |
FR (1) | FR865677A (en) |
GB (1) | GB537599A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE954338C (en) * | 1950-11-09 | 1956-12-13 | Philips Nv | Circuit for automatic gain control in a television receiver |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2537958A (en) * | 1945-12-06 | 1951-01-16 | Waugh Equipment Co | Overload control circuit |
US2647161A (en) * | 1947-09-17 | 1953-07-28 | Motorola Inc | Double triode clamping circuit for direct current reinsertion |
US2498680A (en) * | 1947-09-23 | 1950-02-28 | Int Standard Electric Corp | Alternating current signaling system |
US2525103A (en) * | 1948-03-11 | 1950-10-10 | Rca Corp | Apparatus for controlling black level shift in television signals |
US2708687A (en) * | 1949-05-10 | 1955-05-17 | Motorola Inc | Combined direct current reinserter and synchronizing pulse separator |
US2572179A (en) * | 1949-05-24 | 1951-10-23 | Philco Corp | Peak leveling circuit |
US2800528A (en) * | 1949-06-23 | 1957-07-23 | Du Mont Allen B Lab Inc | Video amplifier bridge circuit for minimizing supply voltage variations |
US2740071A (en) * | 1950-05-11 | 1956-03-27 | Columbia Broadcasting Syst Inc | Television |
US2761066A (en) * | 1951-10-25 | 1956-08-28 | Harris A Robinson | Harmonic generator |
US2750457A (en) * | 1953-02-02 | 1956-06-12 | Edward D Padgett | Pulse amplifier |
-
1939
- 1939-06-09 US US278316A patent/US2254114A/en not_active Expired - Lifetime
-
1940
- 1940-05-18 FR FR865677D patent/FR865677A/en not_active Expired
- 1940-06-05 GB GB9842/40A patent/GB537599A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE954338C (en) * | 1950-11-09 | 1956-12-13 | Philips Nv | Circuit for automatic gain control in a television receiver |
Also Published As
Publication number | Publication date |
---|---|
FR865677A (en) | 1941-05-30 |
US2254114A (en) | 1941-08-26 |
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