JPS57104389A - Trap circuit - Google Patents

Trap circuit

Info

Publication number
JPS57104389A
JPS57104389A JP55181574A JP18157480A JPS57104389A JP S57104389 A JPS57104389 A JP S57104389A JP 55181574 A JP55181574 A JP 55181574A JP 18157480 A JP18157480 A JP 18157480A JP S57104389 A JPS57104389 A JP S57104389A
Authority
JP
Japan
Prior art keywords
channel
trap
carrier frequency
signal
resonance
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
JP55181574A
Other languages
Japanese (ja)
Inventor
Kazuyuki Suenaga
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP55181574A priority Critical patent/JPS57104389A/en
Publication of JPS57104389A publication Critical patent/JPS57104389A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Filters And Equalizers (AREA)

Abstract

PURPOSE:To achieve a simple trap circuit, by the resonance to a carrier frequency of a desired channel, by means of a reactance element having different characteristics from that of a trap attenuating undesirable channel carrier frequency. CONSTITUTION:An output of a video FM demodulator 1 is inputted to traps 13, 14 via a band amplifier 15. A trap 13a of a channel B achieves that a reactance by parallel resonance of L and C is infinite at carrier frequency of a channel A and a series resonance frquencies of L1 and C are set to the carrier frequency of the channel B, allowing to pass through a signal of the channel B without attenuation and to attenuate a signal of the channel A. The trap 14 acts like the trap 13a and an audio signal is obtained via FM demodulators 9, 10. Thus, audio signals to desired channels without crosstalk due to undesirable audio channel can be obtained with a simple circuit.
JP55181574A 1980-12-22 1980-12-22 Trap circuit Pending JPS57104389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55181574A JPS57104389A (en) 1980-12-22 1980-12-22 Trap circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55181574A JPS57104389A (en) 1980-12-22 1980-12-22 Trap circuit

Publications (1)

Publication Number Publication Date
JPS57104389A true JPS57104389A (en) 1982-06-29

Family

ID=16103175

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55181574A Pending JPS57104389A (en) 1980-12-22 1980-12-22 Trap circuit

Country Status (1)

Country Link
JP (1) JPS57104389A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59207008A (en) * 1983-05-09 1984-11-24 Sharp Corp Recording system of video disc
JPS59207002A (en) * 1983-05-09 1984-11-24 Sharp Corp Video disc player
US5379078A (en) * 1991-01-29 1995-01-03 Matsushita Electric Industrial Co., Ltd. Trap circuit apparatus for television receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59207008A (en) * 1983-05-09 1984-11-24 Sharp Corp Recording system of video disc
JPS59207002A (en) * 1983-05-09 1984-11-24 Sharp Corp Video disc player
US5379078A (en) * 1991-01-29 1995-01-03 Matsushita Electric Industrial Co., Ltd. Trap circuit apparatus for television receiver

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