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GB950679A - Improvements in or relating to combined television and sound systems - Google Patents

Improvements in or relating to combined television and sound systems

Info

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
Application number
GB4116661A
Inventor
John Raymond Brinkley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pye Electronic Products Ltd
Original Assignee
Pye Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pye Ltd filed Critical Pye Ltd
Priority to GB4116661A priority Critical patent/GB950679A/en
Publication of GB950679A publication Critical patent/GB950679A/en
Expired legal-status Critical Current

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.
GB4116661A 1961-11-17 1961-11-17 Improvements in or relating to combined television and sound systems Expired GB950679A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128770A2 (en) * 1983-06-10 1984-12-19 General Instrument Corporation Video encryption system

Cited By (2)

* Cited by examiner, † Cited by third party
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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