ES8608765A1 - Colour television transmission system including transmission of luminance signals and low-pass-filtered chrominance signals - Google Patents

Colour television transmission system including transmission of luminance signals and low-pass-filtered chrominance signals

Info

Publication number
ES8608765A1
ES8608765A1 ES547281A ES547281A ES8608765A1 ES 8608765 A1 ES8608765 A1 ES 8608765A1 ES 547281 A ES547281 A ES 547281A ES 547281 A ES547281 A ES 547281A ES 8608765 A1 ES8608765 A1 ES 8608765A1
Authority
ES
Spain
Prior art keywords
luminance
colour
signals
pass
low
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
ES547281A
Other languages
Spanish (es)
Other versions
ES547281A0 (en
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.)
Deutsche Thomson oHG
Original Assignee
Telefunken Fernseh und Rundfunk GmbH
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 Telefunken Fernseh und Rundfunk GmbH filed Critical Telefunken Fernseh und Rundfunk GmbH
Publication of ES8608765A1 publication Critical patent/ES8608765A1/en
Publication of ES547281A0 publication Critical patent/ES547281A0/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/02—Colour television systems with bandwidth reduction

Landscapes

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

Abstract

In the standardised colour television systems, a nonlinear distortion is produced with the conversion of the colour values into the colour signal values at the image pick-up side. In conjunction with the non linear distortion in reproduction, the conversion of the red, green and blue colour value signals into a luminance signal and two chrominance signal components and the subsequent low-pass filtering of the chrominance signal components at the "pre-equalised" signal level, have the consequence that, apart from the intended reduction in chrominance resolution, an unintended falsification of the luminance occurs. The luminance defects can be compensated for by correction signals according to the invention which are transmitted, for example, in the luminance channel.
ES547281A 1984-09-25 1985-09-25 Colour television transmission system including transmission of luminance signals and low-pass-filtered chrominance signals Expired ES8608765A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843435122 DE3435122A1 (en) 1984-09-25 1984-09-25 Colour television transmission system including transmission of luminance signals and low-pass-filtered chrominance signals

Publications (2)

Publication Number Publication Date
ES8608765A1 true ES8608765A1 (en) 1986-08-01
ES547281A0 ES547281A0 (en) 1986-08-01

Family

ID=6246287

Family Applications (1)

Application Number Title Priority Date Filing Date
ES547281A Expired ES8608765A1 (en) 1984-09-25 1985-09-25 Colour television transmission system including transmission of luminance signals and low-pass-filtered chrominance signals

Country Status (4)

Country Link
JP (3) JPS6184983A (en)
KR (1) KR920000984B1 (en)
DE (1) DE3435122A1 (en)
ES (1) ES8608765A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3622878A1 (en) * 1986-07-08 1988-01-21 Telefunken Fernseh & Rundfunk COLOR TELEVISION TRANSMISSION SYSTEM

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7803910A (en) * 1978-04-13 1979-10-16 Philips Nv COMB FILTER CIRCUIT.
JPS54149515A (en) * 1978-05-17 1979-11-22 Nec Corp Separator circuit for luminance signal and chromaticity signal
US4245237A (en) * 1979-05-11 1981-01-13 Rca Corporation Controllable non-linear processing of video signals
JPS5799089A (en) * 1980-12-12 1982-06-19 Nippon Hoso Kyokai <Nhk> Detail compensation system

Also Published As

Publication number Publication date
JPH0496189U (en) 1992-08-20
KR920000984B1 (en) 1992-01-31
DE3435122A1 (en) 1986-04-03
JPS6184983A (en) 1986-04-30
JPH0496188U (en) 1992-08-20
KR860002931A (en) 1986-04-30
ES547281A0 (en) 1986-08-01

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20040601