GB741572A - Improvements in or relating to television receivers - Google Patents
Improvements in or relating to television receiversInfo
- Publication number
- GB741572A GB741572A GB133453A GB133453A GB741572A GB 741572 A GB741572 A GB 741572A GB 133453 A GB133453 A GB 133453A GB 133453 A GB133453 A GB 133453A GB 741572 A GB741572 A GB 741572A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- grid
- valve
- interference
- jan
- 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
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
Abstract
741,572. Television. PYE, Ltd. Jan. 18, 1954 [Jan. 16, 1953; Dec. 30, 1953], Nos. 1334/53 and 36176/53. Class 40 (3). [Also in Group XL (c)] A video signal containing interfering components extending in the white direction, curve a, Fig. 2, is applied directly from video amplifier V3 to the cathode of a limiter valve V2a whilst a further signal, curve b, with transients and interference reduced by integration is derived through cathode follower V1 and integrating stage V9, R, C1 and applied to the grid. Potentiometer P2 is adjusted so that the signals normally hold valve V2a cut-off and render it conducting only during interference. The resulting anode pulses are then applied through condenser C to the cathode-ray tube grid T to suppress the beam. In a modification the signal for the cathode of V2a may be derived from the cathode of VI. In a second embodiment (drawing accompanying the first Provisional Specification, not shown) a fixed potential is maintained on the grid of the limiter valve of a value such that the valve conducts to apply a suppression pulse to the cathode-ray tube only when interference exceeds the peak white level of the video signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB133453A GB741572A (en) | 1953-01-16 | 1953-01-16 | Improvements in or relating to television receivers |
| FR1091441D FR1091441A (en) | 1953-01-16 | 1954-01-15 | Television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB133453A GB741572A (en) | 1953-01-16 | 1953-01-16 | Improvements in or relating to television receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB741572A true GB741572A (en) | 1955-12-07 |
Family
ID=9720182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB133453A Expired GB741572A (en) | 1953-01-16 | 1953-01-16 | Improvements in or relating to television receivers |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1091441A (en) |
| GB (1) | GB741572A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2945090A (en) * | 1957-05-29 | 1960-07-12 | Avco Mfg Corp | Noise inverter circuit |
-
1953
- 1953-01-16 GB GB133453A patent/GB741572A/en not_active Expired
-
1954
- 1954-01-15 FR FR1091441D patent/FR1091441A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2945090A (en) * | 1957-05-29 | 1960-07-12 | Avco Mfg Corp | Noise inverter circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1091441A (en) | 1955-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB706341A (en) | Improvements in television | |
| GB653788A (en) | Improvements in automatic control systems for television receivers | |
| GB741572A (en) | Improvements in or relating to television receivers | |
| GB768508A (en) | Signal-separating circuit for a color-television receiver | |
| GB919034A (en) | Improvements in and relating to television receiving apparatus | |
| GB701985A (en) | Improvements in or relating to television receivers | |
| GB910854A (en) | Black level stabilisation circuit | |
| GB764142A (en) | Improvements in or relating to video signal clamping circuits | |
| GB463001A (en) | Television receiver | |
| GB858259A (en) | Improvements in or relating to signal storing systems | |
| GB773773A (en) | Improvements in or relating to circuit arrangements for television sets | |
| GB816226A (en) | Improvements in or relating to television receivers | |
| GB1082429A (en) | Simplified color killer circuit | |
| GB697897A (en) | Improvements in circuit-arrangements for automatic gain control | |
| GB734438A (en) | Improvements in or relating to automatic gain control in television receivers | |
| GB856016A (en) | Improvements in or relating to television receivers | |
| GB696121A (en) | Improvements in or relating to television and like receivers | |
| GB771454A (en) | Improvements in or relating to protection circuits for cathode ray tubes and the like | |
| GB530426A (en) | Automatic control system for television receivers | |
| GB797114A (en) | Improvements in or relating to automatic gain control systems for television receivers | |
| GB787649A (en) | Improvements in or relating to interference limiters | |
| GB847703A (en) | Improvements in or relating to television apparatus | |
| GB752544A (en) | Signal-translating system for color-television receiver | |
| GB1077945A (en) | Circuit arrangement for suppressing the switch-on buzzing noise in television receivers | |
| GB815476A (en) | Improvements in cathode ray discharge devices |