GB772620A - Improvements in or relating to circuits for television receivers and the like - Google Patents
Improvements in or relating to circuits for television receivers and the likeInfo
- Publication number
- GB772620A GB772620A GB2191354A GB2191354A GB772620A GB 772620 A GB772620 A GB 772620A GB 2191354 A GB2191354 A GB 2191354A GB 2191354 A GB2191354 A GB 2191354A GB 772620 A GB772620 A GB 772620A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signals
- sound
- interference
- vision
- picture
- 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
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
Abstract
772,620. Television. MULLARD RADIO VALVE CO., Ltd. July 27,1954, No. 21913/54. Drawings to Specification. Class 40 (3). [Also in Group XL (c)] Interference caused by accompanying amplitude-modulated sound signals in the picture reproduced by a television receiver is reduced by including a filter which suppresses signals having a frequency corresponding to the difference between the sound and vision carriers in the circuit between the vision detector and the picture reproducing tube. This arrangement, whilst giving sufficient sound rejection in the reproduced picture, allows some sound interference to remain on the synchronizing signals and this effect is reduced either by " flywheel " techniques or by causing cancellation of the interference by combining signals derived from the sound channel in suitable amplitude and phase with the composite vision signals prior to separation of the synchronizing signals.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE540077D BE540077A (en) | 1954-07-27 | ||
| GB2191354A GB772620A (en) | 1954-07-27 | 1954-07-27 | Improvements in or relating to circuits for television receivers and the like |
| FR1128210D FR1128210A (en) | 1954-07-27 | 1955-07-25 | Circuits for television receivers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2191354A GB772620A (en) | 1954-07-27 | 1954-07-27 | Improvements in or relating to circuits for television receivers and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB772620A true GB772620A (en) | 1957-04-17 |
Family
ID=10170905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2191354A Expired GB772620A (en) | 1954-07-27 | 1954-07-27 | Improvements in or relating to circuits for television receivers and the like |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE540077A (en) |
| FR (1) | FR1128210A (en) |
| GB (1) | GB772620A (en) |
-
0
- BE BE540077D patent/BE540077A/xx unknown
-
1954
- 1954-07-27 GB GB2191354A patent/GB772620A/en not_active Expired
-
1955
- 1955-07-25 FR FR1128210D patent/FR1128210A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE540077A (en) | |
| FR1128210A (en) | 1957-01-03 |
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