JPS57141194A - Demodulating circuit for pal system color television signal - Google Patents

Demodulating circuit for pal system color television signal

Info

Publication number
JPS57141194A
JPS57141194A JP56027310A JP2731081A JPS57141194A JP S57141194 A JPS57141194 A JP S57141194A JP 56027310 A JP56027310 A JP 56027310A JP 2731081 A JP2731081 A JP 2731081A JP S57141194 A JPS57141194 A JP S57141194A
Authority
JP
Japan
Prior art keywords
circuit
television signal
current
pal system
discriminating
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
JP56027310A
Other languages
Japanese (ja)
Inventor
Hideki Miura
Yutaka Nakagawa
Nobuhiro Hori
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 Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP56027310A priority Critical patent/JPS57141194A/en
Priority to GB8205523A priority patent/GB2094096B/en
Priority to NL8200771A priority patent/NL8200771A/en
Priority to DE19823207003 priority patent/DE3207003A1/en
Publication of JPS57141194A publication Critical patent/JPS57141194A/en
Pending 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

PURPOSE: To perform color killing operation by discriminating a PAL system color television signal by detecting a current flowing through a smoothing circuit and controlling a discriminating circuit by its detection output.
CONSTITUTION: A current detecting circuit 40 detects a current flowing through a smoothing circuit 22. The detection output of the circuit 40 is supplied to a line discriminating circuit 33 as a discriminating circuit for a PAL system color television signal. When a color burst signal loses the continuation of its phase, a phase detecting circuit 19 outputs a positive pulse, and a reproduced picture changes from a positive mode to a negative one. On the basis of this positive pulse, a current inverse of that in normal operation flows through the current 22 and is detected by a resistance 38 to turn on a transistor 39 momentarily. A pulse divided into two inverts the state of an FF circuit 28 twice. Consequently, a color demodulator 8 is supplied with a correct-phase subcarrier signal to reset the reproduced picture to the positive mode.
COPYRIGHT: (C)1982,JPO&Japio
JP56027310A 1981-02-26 1981-02-26 Demodulating circuit for pal system color television signal Pending JPS57141194A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56027310A JPS57141194A (en) 1981-02-26 1981-02-26 Demodulating circuit for pal system color television signal
GB8205523A GB2094096B (en) 1981-02-26 1982-02-25 Demodulating circuits for pal colour television signals
NL8200771A NL8200771A (en) 1981-02-26 1982-02-25 CIRCUIT FOR DEMODULATION OF A PAL TYPE COLOR TELEVISION SIGNAL.
DE19823207003 DE3207003A1 (en) 1981-02-26 1982-02-26 DEMODULATOR CIRCUIT FOR DEMODULATING A PAL COLOR TELEVISION SIGNAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56027310A JPS57141194A (en) 1981-02-26 1981-02-26 Demodulating circuit for pal system color television signal

Publications (1)

Publication Number Publication Date
JPS57141194A true JPS57141194A (en) 1982-09-01

Family

ID=12217508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56027310A Pending JPS57141194A (en) 1981-02-26 1981-02-26 Demodulating circuit for pal system color television signal

Country Status (4)

Country Link
JP (1) JPS57141194A (en)
DE (1) DE3207003A1 (en)
GB (1) GB2094096B (en)
NL (1) NL8200771A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841727A (en) * 1981-08-19 1983-03-11 バスフ・アクチエンゲゼルシヤフト Manufacture of fine ferrite powder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5543316B2 (en) * 1973-11-16 1980-11-05
JPS53133325A (en) * 1977-04-27 1978-11-21 Hitachi Ltd Pal-system color demodulation circuit
AU519140B2 (en) * 1979-04-19 1981-11-12 Matsushita Electric Industrial Co., Ltd. Pal demodulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841727A (en) * 1981-08-19 1983-03-11 バスフ・アクチエンゲゼルシヤフト Manufacture of fine ferrite powder
JPH0359007B2 (en) * 1981-08-19 1991-09-09 Basf Ag

Also Published As

Publication number Publication date
DE3207003A1 (en) 1982-09-16
GB2094096B (en) 1985-03-06
GB2094096A (en) 1982-09-08
NL8200771A (en) 1982-09-16

Similar Documents

Publication Publication Date Title
JPS57160288A (en) Processing circuit for chrominance signal
JPS5280734A (en) Tv picture receiver
JPS52123829A (en) Color television receiver
JPS57141194A (en) Demodulating circuit for pal system color television signal
JPS5425116A (en) Color signal demodulator circuit of color television on secam system
EP0221734B1 (en) Dot interference detector
JPS53139151A (en) Dc transmission line disconnection detection
JPS5251821A (en) Color tv receiver of secam system
JPS53106420A (en) Detector system for commutation faulure
JPS57155889A (en) Digital convergence device
JPS5267217A (en) Color demodulation circuit of color tv receiver
JPS5730486A (en) Chrominance demodulator
JPS5371526A (en) Color signal processing circuit using pal system
JPS5531366A (en) Disengaged line signal detection system
JPS5353923A (en) Color television receiver
JPS5421218A (en) One-point emphasis corcuit
JPS5242326A (en) Secam system color television receiver
JPS5297622A (en) Color tv picture receiver of secam system
JPS5437531A (en) Recording-regenerating system for color vedeo signal on secam system
JPS5752287A (en) Color signal circuit of pal color television set
JPS53133325A (en) Pal-system color demodulation circuit
JPS5310923A (en) Secam color television image receiver
JPS6482882A (en) Signal separator
JPS5432927A (en) Television receiver
JPS5422126A (en) Color television picture receiver