GB421937A - Improvements in and relating to picture assembling in television receivers - Google Patents
Improvements in and relating to picture assembling in television receiversInfo
- Publication number
- GB421937A GB421937A GB10592/34A GB1059234A GB421937A GB 421937 A GB421937 A GB 421937A GB 10592/34 A GB10592/34 A GB 10592/34A GB 1059234 A GB1059234 A GB 1059234A GB 421937 A GB421937 A GB 421937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- saw
- frequency
- modulated
- oscillations
- tooth
- 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
- H04N7/00—Television systems
- H04N7/06—Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier
Abstract
421,937. Television. SUDDEUTSCHE TELEFON - APPARATE - KABEL - UND DRAHTWERKE AKT.-GES., Tekade, Nuremberg, Germany. April 7, 1934, No. 10592. Convention date, Nov. 6, 1933. [Class 40 (iii)] The whole of the saw-tooth oscillations bf, zf necessary to control the scanning movement of a cathode-ray at a receiver is transmitted by a separate transmitter S2, the carrier frequency ft2 of which is also modulated by accompanying sound frequencies tf through an intermediate carrier frequency fz1. The carrier frequency of ft2 is modulated directly by both saw-tooth oscillations, Fig. 1 (not shown) or the saw-tooth oscillation bf of the picture frequency may first modulate an intermediate carrier fz2. The receiver E2 corresponding to the transmitter S2 comprises a detector D2 followed by filters F1, F2, F3 which supply the directly modulated oscillations zf to a low frequency amplifier V2, and the intermediate carriers fz1, fz2 each to a second detector D3, D4 followed by a low-frequency amplifier V5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE421937X | 1933-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB421937A true GB421937A (en) | 1935-01-02 |
Family
ID=6460932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10592/34A Expired GB421937A (en) | 1933-11-06 | 1934-04-07 | Improvements in and relating to picture assembling in television receivers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB421937A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2477625A (en) * | 1944-08-25 | 1949-08-02 | Standard Telephones Cables Ltd | Multiplex television and pulse modulated sound system |
| US2567539A (en) * | 1948-06-25 | 1951-09-11 | Zenith Radio Corp | Subscriber television system |
-
1934
- 1934-04-07 GB GB10592/34A patent/GB421937A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2477625A (en) * | 1944-08-25 | 1949-08-02 | Standard Telephones Cables Ltd | Multiplex television and pulse modulated sound system |
| US2567539A (en) * | 1948-06-25 | 1951-09-11 | Zenith Radio Corp | Subscriber television system |
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