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GB765598A - Improvements in or relating to sequential colour television and like systems - Google Patents

Improvements in or relating to sequential colour television and like systems

Info

Publication number
GB765598A
GB765598A GB2962954A GB2962954A GB765598A GB 765598 A GB765598 A GB 765598A GB 2962954 A GB2962954 A GB 2962954A GB 2962954 A GB2962954 A GB 2962954A GB 765598 A GB765598 A GB 765598A
Authority
GB
United Kingdom
Prior art keywords
signal
signals
colour
blue
tube
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
GB2962954A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB765598A publication Critical patent/GB765598A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/14—Crossings; Points
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/02—Details
    • 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
    • H04N11/08—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using sequential signals only

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Color Television Systems (AREA)

Abstract

765,598. Television. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 14, 1954 [Oct. 15, 1953], No. 29629/54. Drawings to Specification. Class 40 (3). In a sequential colour television system a single carrier wave is modulated in turn by two signals the first of which is the green signal and the second of which comprises the red signal, together with the blue signal, the latter being transposed in frequency by means of an auxiliary carrier such that the spectra of the blue and red signals do not overlap sufficiently to prevent correct separation at the receiver. The definition of the blue signal is considerably lower than that of either the green or the red signal and the overall band-widths of the systems is equal to the pass-band of the green signal, that of the red signal being 20 per cent smaller. For stereoscopic operation the green and red signals may be replaced by black/white " stereoscopic pair " signals and the blue signal replaced by the sound signals. The receiver for colour reproduction may employ: (1) a separate cathode-ray tube for each colour; (2) a single tri-gun tube; (3) a single tube with two guns, one of which is employed for the blue signals, or (4) a two-colour tube with one electron-gun together with a further tube for the third colour.
GB2962954A 1953-10-15 1954-10-14 Improvements in or relating to sequential colour television and like systems Expired GB765598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1091806T 1953-10-15

Publications (1)

Publication Number Publication Date
GB765598A true GB765598A (en) 1957-01-09

Family

ID=42687734

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2962954A Expired GB765598A (en) 1953-10-15 1954-10-14 Improvements in or relating to sequential colour television and like systems

Country Status (4)

Country Link
BE (1) BE532524A (en)
DE (1) DE948702C (en)
FR (1) FR1091806A (en)
GB (1) GB765598A (en)

Also Published As

Publication number Publication date
FR1091806A (en) 1955-04-15
DE948702C (en) 1956-09-06
BE532524A (en) 1958-02-14

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