ES379687A1 - Decoder for the high colour fidelity reproduction of a pal-encoded colour signal - Google Patents

Decoder for the high colour fidelity reproduction of a pal-encoded colour signal

Info

Publication number
ES379687A1
ES379687A1 ES379687A ES379687A ES379687A1 ES 379687 A1 ES379687 A1 ES 379687A1 ES 379687 A ES379687 A ES 379687A ES 379687 A ES379687 A ES 379687A ES 379687 A1 ES379687 A1 ES 379687A1
Authority
ES
Spain
Prior art keywords
pal
color
fidelity
signal
chromatic
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
ES379687A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana 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
Priority claimed from DE19691925155 external-priority patent/DE1925155C/en
Application filed by Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES379687A1 publication Critical patent/ES379687A1/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
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system
    • H04N11/165—Decoding means therefor

Landscapes

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

Abstract

A decoder for high-fidelity color reproduction of a PAL system color signal, in which one of the two components of the quadratic wave modulation that are rectangular to each other, changes its polarity to the line frequency (PAL alternation), characterized in that in this PAL encoded color signal, by means of a phase decoding independent of the amplitude in which the count direction of the chromatic fidelity component, for the elimination of PAL alternation is alternately switched with the line frequency and a subsequent addition of mid-phase formation together with the corresponding signal and delayed by a line period, a chromatic fidelity component is derived from which, together with the demodulated envelope PAL color-coded signal, or the latter, in the form of a code conversion, the video or carrier chromatic signals (RY) and (BY) are obtained, which are high fidelity ity in relation to saturation of chromaticity and color. (Machine-translation by Google Translate, not legally binding)
ES379687A 1969-05-16 1970-05-14 Decoder for the high colour fidelity reproduction of a pal-encoded colour signal Expired ES379687A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691925155 DE1925155C (en) 1969-05-16 Method and circuit arrangement for recovering the video or carrier frequency color difference signals from a PAL chrominance signal

Publications (1)

Publication Number Publication Date
ES379687A1 true ES379687A1 (en) 1972-08-01

Family

ID=5734411

Family Applications (1)

Application Number Title Priority Date Filing Date
ES379687A Expired ES379687A1 (en) 1969-05-16 1970-05-14 Decoder for the high colour fidelity reproduction of a pal-encoded colour signal

Country Status (8)

Country Link
AT (1) AT317320B (en)
BE (1) BE750542A (en)
ES (1) ES379687A1 (en)
FI (1) FI53389C (en)
FR (1) FR2044795B1 (en)
GB (1) GB1307566A (en)
NO (1) NO130806C (en)
SE (1) SE370000B (en)

Also Published As

Publication number Publication date
DE1925155B2 (en) 1971-04-29
NO130806B (en) 1974-11-04
SE370000B (en) 1974-09-23
DE1925155A1 (en) 1970-12-17
GB1307566A (en) 1973-02-21
FI53389C (en) 1978-04-10
BE750542A (en) 1970-11-19
AT317320B (en) 1974-08-26
FR2044795B1 (en) 1976-05-28
FR2044795A1 (en) 1971-02-26
FI53389B (en) 1977-12-30
NO130806C (en) 1975-02-12

Similar Documents

Publication Publication Date Title
GB1508408A (en) Multiplex colour television transmission system
IE34849L (en) Recording colour video signal
GB821246A (en) Improvements in or relating to colour television system
IE34850L (en) Recording/reproducing system for colour video signals
GB1185197A (en) Improvements in or relating to Transmssion Channels for Colour Television Signals
GB2069287B (en) Decoding pal television signals
ES428265A1 (en) Apparatus for reproducing a PAL color television signal which is recorded on a record carrier and drop out compensation
ES418372A1 (en) Modulator system
ES379687A1 (en) Decoder for the high colour fidelity reproduction of a pal-encoded colour signal
GB1490656A (en) Colour television system
GB1455822A (en) Sampling rate changer
GB1298015A (en) Color television camera encoding system
GB1316109A (en) Signal demodulator circuit for pal/secam decoders
GB1260779A (en) An arrangement and method for delaying an electrical signal
ES396394A1 (en) Color television receiver
GB1514435A (en) System for the digital transmission of colour television signals
GB1490595A (en) Recording apparatus coding circuit for an image signal and corresponding decoding circuit
ES397061A2 (en) Decoder for television signals
GB1061907A (en) Improvements relating to vestigial sideband transmitters
ES429141A1 (en) A decoding system for a color television receiver. (Machine-translation by Google Translate, not legally binding)
GB1503166A (en) Summation circuit arrangement for colour television signals
AT313390B (en) Circuit for phase-locked adjustment of the amplitude of a chrominance signal modulated by a subcarrier
GB1333885A (en) Hue selection in colour television
JPS55125785A (en) Recording and reproduction unit for color television signal
NL7414905A (en) Circuit for transmitting colour TV signals to carrier - has auxiliary carrier with phase change switch and network turning signal through quadrature