JPS57160283A - Band limit circuit in color television receiver - Google Patents

Band limit circuit in color television receiver

Info

Publication number
JPS57160283A
JPS57160283A JP4548281A JP4548281A JPS57160283A JP S57160283 A JPS57160283 A JP S57160283A JP 4548281 A JP4548281 A JP 4548281A JP 4548281 A JP4548281 A JP 4548281A JP S57160283 A JPS57160283 A JP S57160283A
Authority
JP
Japan
Prior art keywords
circuit
signal
inputted
video
band limit
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
JP4548281A
Other languages
Japanese (ja)
Other versions
JPS6363154B2 (en
Inventor
Yoshiaki Fukuyoshi
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP4548281A priority Critical patent/JPS57160283A/en
Publication of JPS57160283A publication Critical patent/JPS57160283A/en
Publication of JPS6363154B2 publication Critical patent/JPS6363154B2/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
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters

Landscapes

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

Abstract

PURPOSE:To improve the characteristics of a chromafringe and to reduce cross color by using a band limit circuit with single tuned configuration and providing the frequency characteristics of a carrier chrominance signal outputted from the band limit circuit with a prescribed band width from the center frequency. CONSTITUTION:A color synthesizing video signal S4 is outputted from a 1st video amplifying circuit 4 connected to a video detecting circuit 3 and inputted both a 2nd video amplifying circuit 5 and a band limit circuit 8 with single tuned configuration. The circuit 8 determines resonance frequency and outputs a carrier chrominance signal S7 with a prescribed band width. The signal S7 is inputted to a chromaticity circuit 10 through a demodulator 9 and an I signal SI and a Q signal SQ which are modulated by a chrominance subcarrier wave so as to have the frequency band of the chrominance subcarrier wave are fetched from the circuit 10 and inputted to a matrix circuit 11. On the other hand, a luminance signal S5 outputted from the amplifying circuit 5 is amplified by a 3rd video amplifying circuit 7 and inputted to the circuit 11. Thus, a delay line for the transmission system of the luminance signal S5 can be omitted, improving the chromafringe characteristics and reducing cross color.
JP4548281A 1981-03-30 1981-03-30 Band limit circuit in color television receiver Granted JPS57160283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4548281A JPS57160283A (en) 1981-03-30 1981-03-30 Band limit circuit in color television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4548281A JPS57160283A (en) 1981-03-30 1981-03-30 Band limit circuit in color television receiver

Publications (2)

Publication Number Publication Date
JPS57160283A true JPS57160283A (en) 1982-10-02
JPS6363154B2 JPS6363154B2 (en) 1988-12-06

Family

ID=12720613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4548281A Granted JPS57160283A (en) 1981-03-30 1981-03-30 Band limit circuit in color television receiver

Country Status (1)

Country Link
JP (1) JPS57160283A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007235929A (en) * 2006-02-01 2007-09-13 Sony Corp Electro-acoustic converter and ear speaker device
JP2007235920A (en) * 2006-02-01 2007-09-13 Sony Corp Electro-acoustic converter and ear speaker device
JP2007235918A (en) * 2006-02-01 2007-09-13 Sony Corp Ear speaker device
JP2007235923A (en) * 2006-02-01 2007-09-13 Sony Corp Electro-acoustic converter and ear speaker device
US8175316B2 (en) 2006-12-05 2012-05-08 Sony Corporation Ear speaker device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56154890A (en) * 1980-03-31 1981-11-30 Rca Corp Color television receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56154890A (en) * 1980-03-31 1981-11-30 Rca Corp Color television receiver

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007235929A (en) * 2006-02-01 2007-09-13 Sony Corp Electro-acoustic converter and ear speaker device
JP2007235920A (en) * 2006-02-01 2007-09-13 Sony Corp Electro-acoustic converter and ear speaker device
JP2007235918A (en) * 2006-02-01 2007-09-13 Sony Corp Ear speaker device
JP2007235923A (en) * 2006-02-01 2007-09-13 Sony Corp Electro-acoustic converter and ear speaker device
US8175316B2 (en) 2006-12-05 2012-05-08 Sony Corporation Ear speaker device
US8538059B2 (en) 2006-12-05 2013-09-17 Sony Corporation Ear speaker device

Also Published As

Publication number Publication date
JPS6363154B2 (en) 1988-12-06

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