GB897959A - Improvements in diplexing or multiplexing video systems - Google Patents

Improvements in diplexing or multiplexing video systems

Info

Publication number
GB897959A
GB897959A GB894260A GB894260A GB897959A GB 897959 A GB897959 A GB 897959A GB 894260 A GB894260 A GB 894260A GB 894260 A GB894260 A GB 894260A GB 897959 A GB897959 A GB 897959A
Authority
GB
United Kingdom
Prior art keywords
colour
receivers
march
recording device
combined
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
GB894260A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB897959A publication Critical patent/GB897959A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/18—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous and sequential signals, e.g. SECAM-system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/18—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous and sequential signals, e.g. SECAM-system
    • H04N11/183—Encoding means therefor
    • 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
    • H04N7/0806—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 the signals being two or more video signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

897,959. Television. COMPAGNIE GENERALE DE TELEGRAPHIE SANS F1L. March 14, 1960 [March 23, 1959], No. 8942/60. Drawings to Specification. Class 40(3). In a compatible colour television transmission system the red and blue colour component signals alternately, at line repetition rate, frequency modulate a sub-carrier wave which, during alternate picture periods, is combined with the luminance signal for transmission and also fed to a recording device from which during the intervening picture periods the recorded signals are derived, phase inverted and also combined with the luminance signal. With this arrangement the production of a dotted pattern in "black and white" receivers is prevented at the expense of a reduction by one half of the rate at which chrominance information is transmitted. It is stated that this does not particularly affect the quality of colour pictures reproduced by colour receivers. The recording device may be a magnetic drum or a charge storage tube.
GB894260A 1959-03-23 1960-03-14 Improvements in diplexing or multiplexing video systems Expired GB897959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR790091A FR1229863A (en) 1959-03-23 1959-03-23 New process for diplexing a video signal and a sub-carrier whose spectrum is inside the video band

Publications (1)

Publication Number Publication Date
GB897959A true GB897959A (en) 1962-06-06

Family

ID=8712803

Family Applications (1)

Application Number Title Priority Date Filing Date
GB894260A Expired GB897959A (en) 1959-03-23 1960-03-14 Improvements in diplexing or multiplexing video systems

Country Status (4)

Country Link
BE (1) BE588468A (en)
FR (1) FR1229863A (en)
GB (1) GB897959A (en)
NL (1) NL249686A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2204932A1 (en) * 1972-10-30 1974-05-24 Hazeltine Research Inc
FR2651630A1 (en) * 1989-08-11 1991-03-08 Gen Electric DISPUTE FOR FREQUENCING AN AUXILIARY SIGNAL WITH A TELEVISION SIGNAL.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2204932A1 (en) * 1972-10-30 1974-05-24 Hazeltine Research Inc
FR2651630A1 (en) * 1989-08-11 1991-03-08 Gen Electric DISPUTE FOR FREQUENCING AN AUXILIARY SIGNAL WITH A TELEVISION SIGNAL.

Also Published As

Publication number Publication date
BE588468A (en) 1960-07-01
FR1229863A (en) 1960-09-12
NL249686A (en)

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