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GB852512A - Improvements in or relating to colour television transmitting systems - Google Patents

Improvements in or relating to colour television transmitting systems

Info

Publication number
GB852512A
GB852512A GB891056A GB891056A GB852512A GB 852512 A GB852512 A GB 852512A GB 891056 A GB891056 A GB 891056A GB 891056 A GB891056 A GB 891056A GB 852512 A GB852512 A GB 852512A
Authority
GB
United Kingdom
Prior art keywords
signals
band
luminance
carrier
chrominance
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
GB891056A
Inventor
James John Billin
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB891056A priority Critical patent/GB852512A/en
Priority to DEE13855A priority patent/DE1033705B/en
Publication of GB852512A publication Critical patent/GB852512A/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
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Systems (AREA)

Abstract

852,512. Television. ELECTRIC & MUSICAL INDUSTRIES Ltd. March 18, 1957 [March 22, 1956], No. 8910/56. Class 40(3). In a colour television transmission system in which luminance signals 1 are transmitted with a full upper-side band and a vertigial lower sideband together with chrominance signals comprising a narrow double side-band modulation 3 and, in quadrature therewith, a second modulation 4 having a full upper side-band and a vestigial lower side-band, the upper frequencies of the luminance signals 2 (i.e. those between 4À75 and 7 mc/s. are transmitted, as shown, on the vestigial side of the luminance carrier. By employing this arrangement instead of extending the upper side-band of the luminance signals 1 to 7 mc/s. increased definition is obtained without the need for changing the spacing between the vision carrier O mc/s. and the sound carrier 5.5 mc/s. which would present inter-carrier sound operation in co-operating receivers. In such a receiver (Fig. 2) a chrominance trap 9 is arranged to suppress the chrominance signals 3, 4 so that the luminance channel receives only the luminance signals 1 and 2. Such a trap would also be provided in monochrome receivers designed to receive signals as described in connection with Fig. 1 and would receive normal definition signals on one side-band and higher definition signals on the other side-band.
GB891056A 1956-03-22 1956-03-22 Improvements in or relating to colour television transmitting systems Expired GB852512A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB891056A GB852512A (en) 1956-03-22 1956-03-22 Improvements in or relating to colour television transmitting systems
DEE13855A DE1033705B (en) 1956-03-22 1957-03-21 Color television broadcast system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB891056A GB852512A (en) 1956-03-22 1956-03-22 Improvements in or relating to colour television transmitting systems

Publications (1)

Publication Number Publication Date
GB852512A true GB852512A (en) 1960-10-26

Family

ID=9861680

Family Applications (1)

Application Number Title Priority Date Filing Date
GB891056A Expired GB852512A (en) 1956-03-22 1956-03-22 Improvements in or relating to colour television transmitting systems

Country Status (2)

Country Link
DE (1) DE1033705B (en)
GB (1) GB852512A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4543598A (en) * 1981-07-09 1985-09-24 British Broadcasting Corporation Color television systems
US4837611A (en) * 1988-02-03 1989-06-06 Faroudja Y C Wideband NTSC-compatible transmission system with noise reduction processing
US4847676A (en) * 1981-07-12 1989-07-11 British Broadcasting Corporation Color television system
US4943847A (en) * 1986-09-19 1990-07-24 M/A-Com Government Systems, Inc. Extended definition television
WO1993022878A1 (en) * 1992-04-27 1993-11-11 British Broadcasting Corporation Video signal coding

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL191086A (en) * 1953-10-01
BE533703A (en) * 1953-11-26
BE533704A (en) * 1953-11-26

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4543598A (en) * 1981-07-09 1985-09-24 British Broadcasting Corporation Color television systems
US4847676A (en) * 1981-07-12 1989-07-11 British Broadcasting Corporation Color television system
US4943847A (en) * 1986-09-19 1990-07-24 M/A-Com Government Systems, Inc. Extended definition television
US4837611A (en) * 1988-02-03 1989-06-06 Faroudja Y C Wideband NTSC-compatible transmission system with noise reduction processing
WO1993022878A1 (en) * 1992-04-27 1993-11-11 British Broadcasting Corporation Video signal coding
GB2277227A (en) * 1992-04-27 1994-10-19 British Broadcasting Corp Video signal coding
GB2277227B (en) * 1992-04-27 1995-10-25 British Broadcasting Corp Video signal coding
US5561463A (en) * 1992-04-27 1996-10-01 British Broadcasting Corporation Video signal coding using sub-band coding and phase-segregated coding techniques

Also Published As

Publication number Publication date
DE1033705B (en) 1958-07-10

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