JPS5525245A - Color signal demodulator circuit - Google Patents

Color signal demodulator circuit

Info

Publication number
JPS5525245A
JPS5525245A JP9791678A JP9791678A JPS5525245A JP S5525245 A JPS5525245 A JP S5525245A JP 9791678 A JP9791678 A JP 9791678A JP 9791678 A JP9791678 A JP 9791678A JP S5525245 A JPS5525245 A JP S5525245A
Authority
JP
Japan
Prior art keywords
circuit
signal
delay
color signal
amplifier
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.)
Granted
Application number
JP9791678A
Other languages
Japanese (ja)
Other versions
JPS6129200B2 (en
Inventor
Toyokatsu Koga
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9791678A priority Critical patent/JPS5525245A/en
Publication of JPS5525245A publication Critical patent/JPS5525245A/en
Publication of JPS6129200B2 publication Critical patent/JPS6129200B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To eliminate the fluctuation of the delay time for the PAL-system color signal demodulator circuit by controlling the delay time of the horizontal scan period delay line.
CONSTITUTION: When the phase of burst signal (n+2) is delayed by θ to the normal burst axis in 1H delay circuit 19, the 90-degree phase difference is lost between signal (n+2) and subcarrier signal (Sc) at phase detector 16. As a result, the voltage is generated by Δe to detection signal A. This voltage of Δe is amplified at inverse DC amplifier 18 and via sample holding circuit 17 and then applied to variable delay circuit 14. Circuit 14 consists of the variable capacity diode and others and then controlled by the output of amplifier 18 in orde to eliminate the temperature fluctuation.
COPYRIGHT: (C)1980,JPO&Japio
JP9791678A 1978-08-10 1978-08-10 Color signal demodulator circuit Granted JPS5525245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9791678A JPS5525245A (en) 1978-08-10 1978-08-10 Color signal demodulator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9791678A JPS5525245A (en) 1978-08-10 1978-08-10 Color signal demodulator circuit

Publications (2)

Publication Number Publication Date
JPS5525245A true JPS5525245A (en) 1980-02-22
JPS6129200B2 JPS6129200B2 (en) 1986-07-04

Family

ID=14205018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9791678A Granted JPS5525245A (en) 1978-08-10 1978-08-10 Color signal demodulator circuit

Country Status (1)

Country Link
JP (1) JPS5525245A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991788A (en) * 1982-11-17 1984-05-26 Pioneer Electronic Corp Color demodulating circuit of picture reproducer
JPS59122197A (en) * 1982-12-23 1984-07-14 トムソン‐セーエスエフ Delay line automatic compensating circuit for pal type television receiver
JPS59171291A (en) * 1982-12-10 1984-09-27 トムソン−セ−エスエフ Chrominance decoder circuit and method of producing same
JPS6187252A (en) * 1985-10-07 1986-05-02 Canon Inc Photothermomagnetic recording medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991788A (en) * 1982-11-17 1984-05-26 Pioneer Electronic Corp Color demodulating circuit of picture reproducer
JPH0378838B2 (en) * 1982-11-17 1991-12-16 Pioneer Electronic Corp
JPS59171291A (en) * 1982-12-10 1984-09-27 トムソン−セ−エスエフ Chrominance decoder circuit and method of producing same
JPH0582115B2 (en) * 1982-12-10 1993-11-17 Thomson Csf
JPS59122197A (en) * 1982-12-23 1984-07-14 トムソン‐セーエスエフ Delay line automatic compensating circuit for pal type television receiver
JPH0561837B2 (en) * 1982-12-23 1993-09-07 Thomson Csf
JPS6187252A (en) * 1985-10-07 1986-05-02 Canon Inc Photothermomagnetic recording medium

Also Published As

Publication number Publication date
JPS6129200B2 (en) 1986-07-04

Similar Documents

Publication Publication Date Title
JPS5660165A (en) Picture reader
JPS5525245A (en) Color signal demodulator circuit
JPS53118927A (en) Video detecting unit
JPS5353216A (en) Synchronous detector circuit of video intermediate frequency signal
JPS5298418A (en) 2-value signal converter apparatus for analogue picture signal
JPS5350619A (en) Recording and reproducing unit
JPS5235936A (en) Recording and playback system of color television signal
JPS5427318A (en) Color saturation degree controlle
JPS543433A (en) Hue ajustment system
JPS5377133A (en) Special effect generator
JPS5275218A (en) Picture quality adjusting unit
JPS5592081A (en) Adjustment unit of television receiver
JPS5534382A (en) Separator circuit for synchronizing signal
JPS5432220A (en) Phase synchronizing circuit
JPS5528525A (en) Input bias control system for charge transfer element
JPS5353218A (en) Interpolation system for color television signal sample value
JPS5528645A (en) Compensation circuit for deficient noise
JPS5482124A (en) Automatic phase control unit
JPS52104863A (en) Automatic contrast adjusting device for video signal
JPS53124019A (en) Picture reproduction system
JPS5419610A (en) Recording and reproducing unit for color video signal
JPS5288744A (en) Load concentrating control type receiver
JPS53149628A (en) Output detector for power converter
JPS53112027A (en) Recording and reproducing system for color signal
JPS51128512A (en) Drop-out compensation system