JPS57141190A - Cross-color eliminating circuit - Google Patents

Cross-color eliminating circuit

Info

Publication number
JPS57141190A
JPS57141190A JP2732781A JP2732781A JPS57141190A JP S57141190 A JPS57141190 A JP S57141190A JP 2732781 A JP2732781 A JP 2732781A JP 2732781 A JP2732781 A JP 2732781A JP S57141190 A JPS57141190 A JP S57141190A
Authority
JP
Japan
Prior art keywords
signal
output
band
lpf15
bpf13
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
JP2732781A
Other languages
Japanese (ja)
Other versions
JPS637715B2 (en
Inventor
Kiyoshi Morioka
Kazu Okada
Hiroshi Ito
Hideyuki Yoshida
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic 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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP2732781A priority Critical patent/JPS57141190A/en
Publication of JPS57141190A publication Critical patent/JPS57141190A/en
Publication of JPS637715B2 publication Critical patent/JPS637715B2/ja
Granted 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
    • H04N9/78—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 for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter

Landscapes

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

Abstract

PURPOSE:To eliminate cross-color disturbance without lowering color resolution by extracting a chromaticity signal through a narrow-band BPF only where there is no vertical line correlation. CONSTITUTION:A video signal supplied to an input terminal 1, after being delayed through a 1H delay line 2 by one horizontal scanning period, is added to a signal passed through a buffer amplifier 4 to obtain a luminance signal 10, and a signal C is obtained by processing the output of the 1H delay line 2 and that of a buffer amplifier 6 through the subtraction of a subtracter 5. The signal C is supplied to a wide-band BPF12, a narrow-band BPF13, and an LPF15. When there is some line correlation, the signal C contains no luminance signal, so there is no output from the LPF15, so that a switch circuit 18 selects the output of the wide-band BPF12. When there is no line correlation, on the other hand, the switch circuit 18 is switched by the output of the LPF15 to select the output of the BPF13.
JP2732781A 1981-02-25 1981-02-25 Cross-color eliminating circuit Granted JPS57141190A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2732781A JPS57141190A (en) 1981-02-25 1981-02-25 Cross-color eliminating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2732781A JPS57141190A (en) 1981-02-25 1981-02-25 Cross-color eliminating circuit

Publications (2)

Publication Number Publication Date
JPS57141190A true JPS57141190A (en) 1982-09-01
JPS637715B2 JPS637715B2 (en) 1988-02-18

Family

ID=12217972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2732781A Granted JPS57141190A (en) 1981-02-25 1981-02-25 Cross-color eliminating circuit

Country Status (1)

Country Link
JP (1) JPS57141190A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057789A (en) * 1983-09-08 1985-04-03 Nec Corp Luminance signal and chrominance signal separating circuit
EP0442634A2 (en) * 1990-02-15 1991-08-21 Sony Corporation Video signal separation circuits
US5197100A (en) * 1990-02-14 1993-03-23 Hitachi, Ltd. Audio circuit for a television receiver with central speaker producing only human voice sound

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4914735B2 (en) 2007-02-14 2012-04-11 オリンパスメディカルシステムズ株式会社 Endoscope system for controlling the position of the treatment tool
JP5030639B2 (en) 2007-03-29 2012-09-19 オリンパスメディカルシステムズ株式会社 Endoscope device treatment instrument position control device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51135424A (en) * 1975-04-14 1976-11-24 Thomson Csf Luminance and chromaticity signal separator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51135424A (en) * 1975-04-14 1976-11-24 Thomson Csf Luminance and chromaticity signal separator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057789A (en) * 1983-09-08 1985-04-03 Nec Corp Luminance signal and chrominance signal separating circuit
US5197100A (en) * 1990-02-14 1993-03-23 Hitachi, Ltd. Audio circuit for a television receiver with central speaker producing only human voice sound
EP0442634A2 (en) * 1990-02-15 1991-08-21 Sony Corporation Video signal separation circuits

Also Published As

Publication number Publication date
JPS637715B2 (en) 1988-02-18

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