GB715216A - Improvements in or relating to television broadcast receivers - Google Patents
Improvements in or relating to television broadcast receiversInfo
- Publication number
- GB715216A GB715216A GB212252A GB212252A GB715216A GB 715216 A GB715216 A GB 715216A GB 212252 A GB212252 A GB 212252A GB 212252 A GB212252 A GB 212252A GB 715216 A GB715216 A GB 715216A
- Authority
- GB
- United Kingdom
- Prior art keywords
- components
- frequency
- television broadcast
- jan
- cathode
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
Abstract
715,216. Television. GENERAL ELECTRIC CO., Ltd., and BRABHAM, B. S. Jan. 21, 1953 [Jan. 25, 1952], No. 2122/52. Class 40 (3). [Also in Group XL(c)] The effects of " aeroplane flutter " in a television broadcast receiver are reduced by means of a filter 6-8 having a lower cut-off frequency of 0.1 c/s and an upper cut-off frequency between 5 c/s and the frame frequency which derives the flutter components from the video signal output and applies them to a stage in the receiver to reduce the amplitude of such components in the reproduced image. As illustrated, the components are applied to the control grids of valves in the R.F. and I.F. stages 2 in a manner similar to normal automatic gain control. In another embodiment, Fig. 1 (not shown), the components are applied to the modulator of the cathode-ray tube 3 so as to oppose the normal tube input appearing on the cathode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB212252A GB715216A (en) | 1952-01-25 | 1952-01-25 | Improvements in or relating to television broadcast receivers |
| FR1079016D FR1079016A (en) | 1952-01-25 | 1953-01-23 | Television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB212252A GB715216A (en) | 1952-01-25 | 1952-01-25 | Improvements in or relating to television broadcast receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB715216A true GB715216A (en) | 1954-09-08 |
Family
ID=9733986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB212252A Expired GB715216A (en) | 1952-01-25 | 1952-01-25 | Improvements in or relating to television broadcast receivers |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1079016A (en) |
| GB (1) | GB715216A (en) |
-
1952
- 1952-01-25 GB GB212252A patent/GB715216A/en not_active Expired
-
1953
- 1953-01-23 FR FR1079016D patent/FR1079016A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1079016A (en) | 1954-11-25 |
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