GB950679A - Improvements in or relating to combined television and sound systems - Google Patents
Improvements in or relating to combined television and sound systemsInfo
- Publication number
- GB950679A GB950679A GB4116661A GB4116661A GB950679A GB 950679 A GB950679 A GB 950679A GB 4116661 A GB4116661 A GB 4116661A GB 4116661 A GB4116661 A GB 4116661A GB 950679 A GB950679 A GB 950679A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound
- channels
- television
- nov
- speech
- 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
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/084—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the horizontal blanking interval only
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
Abstract
950,679. Multiplex pulse signalling. PYE Ltd. Nov. 13, 1962 [Nov. 17, 1961], No. 41166/61. Drawings to Specification. Heading H4L. In a television transmission system in which the sound and video signals are transmitted on carrier waves of closely adjacent frequencies, an additional sound channel is provided on the video carrier by sound modulated pulses occurring during the times when the video signal is interrupted. The two sound channels are arranged to be of comparable bandwidth and one may provide, for example, speech in a foreign language, the receiver being provided with switching to receive either one of the speech channels. Alternatively, both sound channels may be associated with the television programme and may feed respective sound reproducers. The apparatus for selecting the additional channel may be in the form of an adapter for connection to a conventional television receiver. The pulses may be modulated in amplitude, phase, frequency or duration in known manner to avoid interference with synchronization. Specifications 434,882, 434,890, 564,511, 621,479 and 621,494 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4116661A GB950679A (en) | 1961-11-17 | 1961-11-17 | Improvements in or relating to combined television and sound systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4116661A GB950679A (en) | 1961-11-17 | 1961-11-17 | Improvements in or relating to combined television and sound systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB950679A true GB950679A (en) | 1964-02-26 |
Family
ID=10418415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4116661A Expired GB950679A (en) | 1961-11-17 | 1961-11-17 | Improvements in or relating to combined television and sound systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB950679A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0128770A2 (en) * | 1983-06-10 | 1984-12-19 | General Instrument Corporation | Video encryption system |
-
1961
- 1961-11-17 GB GB4116661A patent/GB950679A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0128770A2 (en) * | 1983-06-10 | 1984-12-19 | General Instrument Corporation | Video encryption system |
EP0128770A3 (en) * | 1983-06-10 | 1987-03-25 | General Instrument Corporation | Video encryption system |
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