JPS62159085U - - Google Patents

Info

Publication number
JPS62159085U
JPS62159085U JP4819586U JP4819586U JPS62159085U JP S62159085 U JPS62159085 U JP S62159085U JP 4819586 U JP4819586 U JP 4819586U JP 4819586 U JP4819586 U JP 4819586U JP S62159085 U JPS62159085 U JP S62159085U
Authority
JP
Japan
Prior art keywords
video signal
television receiver
color television
comb filter
filter circuit
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
JP4819586U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP4819586U priority Critical patent/JPS62159085U/ja
Publication of JPS62159085U publication Critical patent/JPS62159085U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
  • Details Of Television Scanning (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案の一実施例を示すカラーテレビ
ジヨン受像機のノイズ低減に係わる回路部分の回
路図、第2図1はカラーテレビジヨン受像機の検
波回路で検波された複合映像信号の波形図、第2
図2は無信号時、コントラストボリユームを最大
とした時の映像利得増幅器の出力波形図、第2図
3は無信号時、コントラストボリユームを最小と
した時の映像利得増幅器の出力波形図、第2図4
は正規のブランキングパルスの波形図、第2図5
はノイズ成分の波形図である。 図中、2…クシ型フイルタ回路、4…トランジ
スタ、5…減圧抵抗、7…ダイオード、10…ク
ランプパルス成形回路。
Fig. 1 is a circuit diagram of a circuit portion related to noise reduction in a color television receiver showing an embodiment of the present invention, and Fig. 2 1 is a waveform of a composite video signal detected by the detection circuit of the color television receiver. Figure, 2nd
Figure 2 is an output waveform diagram of the video gain amplifier when there is no signal and the contrast volume is set to the maximum. Figure 2 is an output waveform diagram of the video gain amplifier when there is no signal and the contrast volume is set to the minimum. Figure 4
is the waveform diagram of the regular blanking pulse, Fig. 2.5
is a waveform diagram of a noise component. In the figure, 2... comb filter circuit, 4... transistor, 5... pressure reducing resistor, 7... diode, 10... clamp pulse shaping circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 複合映像信号を映像信号とクロマ信号に分離す
るクシ型フイルタ回路を有するカラーテレビジヨ
ン受像機において、上記クシ型フイルタ回路の入
力部の電圧を、上記複合映像信号の帰線期間中ブ
ランキングレベルにクランプするクランプ手段を
設けたことを特徴とする、カラーテレビジヨン受
像機のノイズ低減回路。
In a color television receiver having a comb filter circuit for separating a composite video signal into a video signal and a chroma signal, the voltage at the input section of the comb filter circuit is set to a blanking level during the retrace period of the composite video signal. A noise reduction circuit for a color television receiver, characterized in that a clamping means is provided.
JP4819586U 1986-03-31 1986-03-31 Pending JPS62159085U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4819586U JPS62159085U (en) 1986-03-31 1986-03-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4819586U JPS62159085U (en) 1986-03-31 1986-03-31

Publications (1)

Publication Number Publication Date
JPS62159085U true JPS62159085U (en) 1987-10-08

Family

ID=30869497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4819586U Pending JPS62159085U (en) 1986-03-31 1986-03-31

Country Status (1)

Country Link
JP (1) JPS62159085U (en)

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