JPS611976U - automatic buzz suppressor - Google Patents
automatic buzz suppressorInfo
- Publication number
- JPS611976U JPS611976U JP8729784U JP8729784U JPS611976U JP S611976 U JPS611976 U JP S611976U JP 8729784 U JP8729784 U JP 8729784U JP 8729784 U JP8729784 U JP 8729784U JP S611976 U JPS611976 U JP S611976U
- Authority
- JP
- Japan
- Prior art keywords
- buzz
- automatic
- lld
- suppressor
- differential comparator
- 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
Links
Landscapes
- Television Receiver Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案の一実施例による音声多重テレビジョ
ン受信機における自動バズ抑圧装置のブロックダイヤグ
ラム、第２図は音声多重テレビジョン受信機のブロック
ダイヤグラム、第３図はバズ（ＢＵＺＺ）の周波数スペ
クトル分布を示す線図、第４図は！，ＬＤタンク回路の
バズ（ＢＵＺＺ）圧対離調特性を示す線図である。
１・・・受信アンテナ、２・・・フロントエンド、３・
・・中間周波帯域通過濾波器、４・・・映像中間中波増
幅器、５・・・低レベル映像検波器、６・・・振幅制限
器、７・・・ＬＬＤタンク回路、８・・・音声中間周波
増幅器、９・・・音声復調器、１０・・・音声多重復調
回路、１１・・・スピーカ、１２・・・帯域通過濾波器
、１３・・・バズ増幅器、１４・・・微分比較器。
＋！Figure 1 is a block diagram of an automatic buzz suppression device in an audio multiplex television receiver according to an embodiment of this invention, Figure 2 is a block diagram of an audio multiplex television receiver, and Figure 3 is a diagram showing the frequency of buzz (BUZZ). A diagram showing the spectral distribution, Figure 4! , is a diagram showing the buzz (BUZZ) pressure versus detuning characteristics of the LD tank circuit. 1...Reception antenna, 2...Front end, 3.
...Intermediate frequency band pass filter, 4...Video intermediate wave amplifier, 5...Low level video detector, 6...Amplitude limiter, 7...LLD tank circuit, 8...Audio Intermediate frequency amplifier, 9... Audio demodulator, 10... Audio multiplex demodulation circuit, 11... Speaker, 12... Band pass filter, 13... Buzz amplifier, 14... Differential comparator . +!
Claims (1)
機において、音声復調器の後段に接続されてバズ（ＢＵ
ＺＺ）成分を抽出する帯域通過濾波器と、上記バズ（Ｂ
ＵＺＺ）を増幅するバズ増幅器と、低レベル映像検波（
以下ＬＬＤという）タンク回路の離調に対する上記バズ
（ＢＵＺＺ）変化の傾き量を出力する微分比較器とを備
え、この微分比較器の出力を上記ＬＬＤ汐ンク回路の可
変ダイオードに供給することを特徴とする自動バズ抑圧
装置。In an audio multiplex television receiver using an intercarrier reception system, a buzz (BU) is connected after the audio demodulator.
A bandpass filter that extracts the ZZ) component and the above-mentioned buzz (B
A buzz amplifier that amplifies the signal (UZZ) and a low-level video detector (
and a differential comparator that outputs the slope of the buzz (BUZZ) change with respect to the detuning of the tank circuit (hereinafter referred to as LLD), and the output of the differential comparator is supplied to the variable diode of the LLD sink circuit. Automatic buzz suppression device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8729784U JPS611976U (en) | 1984-06-12 | 1984-06-12 | automatic buzz suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8729784U JPS611976U (en) | 1984-06-12 | 1984-06-12 | automatic buzz suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS611976U true JPS611976U (en) | 1986-01-08 |
Family
ID=30639385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8729784U Pending JPS611976U (en) | 1984-06-12 | 1984-06-12 | automatic buzz suppressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS611976U (en) |
-
1984
- 1984-06-12 JP JP8729784U patent/JPS611976U/en active Pending
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