JPS5639689A - Luminance signal synthesizer - Google Patents

Luminance signal synthesizer

Info

Publication number
JPS5639689A
JPS5639689A JP11438779A JP11438779A JPS5639689A JP S5639689 A JPS5639689 A JP S5639689A JP 11438779 A JP11438779 A JP 11438779A JP 11438779 A JP11438779 A JP 11438779A JP S5639689 A JPS5639689 A JP S5639689A
Authority
JP
Japan
Prior art keywords
signal
high frequency
frequency component
monochromatic
ratio
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.)
Pending
Application number
JP11438779A
Other languages
Japanese (ja)
Inventor
Takaaki Hashimoto
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.)
Sony Group Corp
Original Assignee
Aiwa Co 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 Aiwa Co Ltd filed Critical Aiwa Co Ltd
Priority to JP11438779A priority Critical patent/JPS5639689A/en
Publication of JPS5639689A publication Critical patent/JPS5639689A/en
Pending 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
    • H04N9/64—Circuits for processing colour signals
    • H04N9/67—Circuits for processing colour signals for matrixing

Landscapes

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

Abstract

PURPOSE:To obtain a luminance signal excellent in frequency and in phase characteristics by mixing the high frequency component of a monochromatic signal with no S/N deterioration and the low frequency component of another monochromatic signal having deteriorated in S/N in the high frequency range and further by mixing the obtained composite signal and the monochromatic signal with no deterioration in the high frequency range. CONSTITUTION:LPF and HPF consisting of a resistance and capacitor serve as a coupled circuit that outputs a composite signal by combining the high frequency component of a monochromatic signal deteriorating in SN ratio in the high frequency band among three primary color signals with the low frequency component of another monochromatic signal having deteriorated in SN ratio in the high frequency band. For this purpose, the R signal and B signal inferior in SN ratio of the high frequency component are passed through amplifiers 10 and 12 and LPF to extract low frequency components and the G signal is supplied to terminal 22 via amplifier 11 and also through HPF to obtain the high frequency component, so that both high frequency components of the R signal and B signal will be interchanged with that of the B signal. Then, the high frequency component of the G signal with the same attenuation with the R and B signals is added and resistances 24-26 of the mixing circuit are given an adequate ratio to synthesize a signal. Thus, a luminance signal excellent in frequency and phase characteristics can be obtained.
JP11438779A 1979-09-06 1979-09-06 Luminance signal synthesizer Pending JPS5639689A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11438779A JPS5639689A (en) 1979-09-06 1979-09-06 Luminance signal synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11438779A JPS5639689A (en) 1979-09-06 1979-09-06 Luminance signal synthesizer

Publications (1)

Publication Number Publication Date
JPS5639689A true JPS5639689A (en) 1981-04-15

Family

ID=14636393

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11438779A Pending JPS5639689A (en) 1979-09-06 1979-09-06 Luminance signal synthesizer

Country Status (1)

Country Link
JP (1) JPS5639689A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583386A (en) * 1981-06-01 1983-01-10 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Color video signal generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS583386A (en) * 1981-06-01 1983-01-10 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Color video signal generator

Similar Documents

Publication Publication Date Title
JPS5484426A (en) Frequency improving circuit for chrominance signal
JPS5298408A (en) Mixer circuit
ES463649A1 (en) Complementary distortion circuit
JPS55143848A (en) Wide band receiving circuit
JPS5639689A (en) Luminance signal synthesizer
JPS53125724A (en) Color television receiver
JPS5260648A (en) Color display for frequency components
JPS5765902A (en) Fm demodulating circuit
JPS5683104A (en) Predistortion circuit
JPS5531368A (en) Transmission amount control circuit
JPS5539408A (en) High frequency modulator circuit
JPS55133154A (en) Compensation circuit for cross polarized wave
JPS55154893A (en) Improving circuit for frequency characteristic of color signal
JPS5679526A (en) Insulation type digital analog converter
JPS5568774A (en) Blooming preventing device
JPS55133156A (en) Compensation circuit for cross polarized wave
JPS5610713A (en) Balanced modulator
JPS53127229A (en) Correcting unit for transmission distortion in color picture
JPS5574228A (en) Audio tone adjusting unit
JPS55154894A (en) Improving circuit for frequency characteristic of color signal
JPS5217745A (en) Non-linear distortion compensator circuit
JPS5525233A (en) Mixer circuit
JPS55112051A (en) Base band signal compounding circuit
JPS52126117A (en) Input tuning circuit
JPS52111321A (en) Receiver for static picture