GB660694A - Improvements in or relating to communal radio television and like receiving systems - Google Patents
Improvements in or relating to communal radio television and like receiving systemsInfo
- Publication number
- GB660694A GB660694A GB671449A GB671449A GB660694A GB 660694 A GB660694 A GB 660694A GB 671449 A GB671449 A GB 671449A GB 671449 A GB671449 A GB 671449A GB 660694 A GB660694 A GB 660694A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signals
- band
- line
- march
- carriers
- 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
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
- H04H20/63—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast to plural spots in a confined site, e.g. MATV [Master Antenna Television]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
- H04N7/17345—Control of the passage of the selected programme
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Television Systems (AREA)
- Details Of Television Systems (AREA)
Abstract
660,694. Distributing music &c. KOLSTER, BRANDES, Ltd. March 10, 1950 [March 11, 1949], No. 6714/49. Class 40 (iv). In a system for receiving a television programme and distributing it over a main cable to a plurality of stations, separate sub-carriers, are modulated with the audio, video and synchronizing signals, and the line and frame pulses comprising the synchronizing signals are sent as pulses of opposite sign. The sound signals and video signals are selected from the incoming signals on the aerial 1 by the R.F. amplifying stages 4 and 5, respectively, and after modulating separate sub-carriers, are applied to the line over band-pass networks 11 and 19, together with the synchronizing signals which have been amplitude-separated from the received video signal by the unit 15. At the subscriber's station the separate signals are selected by band-pass filters 43, 44 and 45, and detected in the diodes 47, 56, 62 and 65, the last two of which are poled to select the line and frame pulses respectively. Reference is also made to the allocation of sufficient band-width for the distribution of a plurality of ordinary radio programmes.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL77192D NL77192C (en) | 1949-03-11 | ||
BE494430D BE494430A (en) | 1949-03-11 | ||
GB671449A GB660694A (en) | 1949-03-11 | 1949-03-11 | Improvements in or relating to communal radio television and like receiving systems |
FR1019212D FR1019212A (en) | 1949-03-11 | 1950-03-09 | Common television reception systems |
DEK7284A DE947559C (en) | 1949-03-11 | 1950-10-01 | Communal TV system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB671449A GB660694A (en) | 1949-03-11 | 1949-03-11 | Improvements in or relating to communal radio television and like receiving systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB660694A true GB660694A (en) | 1951-11-14 |
Family
ID=9819434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB671449A Expired GB660694A (en) | 1949-03-11 | 1949-03-11 | Improvements in or relating to communal radio television and like receiving systems |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE494430A (en) |
DE (1) | DE947559C (en) |
FR (1) | FR1019212A (en) |
GB (1) | GB660694A (en) |
NL (1) | NL77192C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE950199C (en) * | 1951-02-24 | 1956-10-04 | Emi Ltd | Communal television reception system |
DE967737C (en) * | 1952-01-01 | 1957-12-12 | Emi Ltd | Television display device with Braunscher tube |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB433552A (en) * | 1934-02-16 | 1935-08-16 | John Logie Baird | Improvements in or relating to television and like systems |
US2241586A (en) * | 1938-03-12 | 1941-05-13 | Rca Corp | Central television receiving system |
-
0
- NL NL77192D patent/NL77192C/xx active
- BE BE494430D patent/BE494430A/xx unknown
-
1949
- 1949-03-11 GB GB671449A patent/GB660694A/en not_active Expired
-
1950
- 1950-03-09 FR FR1019212D patent/FR1019212A/en not_active Expired
- 1950-10-01 DE DEK7284A patent/DE947559C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE950199C (en) * | 1951-02-24 | 1956-10-04 | Emi Ltd | Communal television reception system |
DE967737C (en) * | 1952-01-01 | 1957-12-12 | Emi Ltd | Television display device with Braunscher tube |
Also Published As
Publication number | Publication date |
---|---|
NL77192C (en) | |
BE494430A (en) | |
DE947559C (en) | 1956-08-16 |
FR1019212A (en) | 1953-01-19 |
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