JPS60127051U - Noise blanker device for AM receiver - Google Patents
Noise blanker device for AM receiverInfo
- Publication number
- JPS60127051U JPS60127051U JP1393184U JP1393184U JPS60127051U JP S60127051 U JPS60127051 U JP S60127051U JP 1393184 U JP1393184 U JP 1393184U JP 1393184 U JP1393184 U JP 1393184U JP S60127051 U JPS60127051 U JP S60127051U
- Authority
- JP
- Japan
- Prior art keywords
- receiver
- detection circuit
- noise
- signal
- receiving system
- 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
- Noise Elimination (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ＦＭ検波出力に現れるパルス性ノイズＰＮとマ
ルチパスノイズＭＰＮ、の波形例を示す線図、第２図は
シグナルレベル信号に現れるパルス性ノイズＰＮとマル
チパスノイズの波形例を示す線図、第３図は本考案の実
施例の要部ブロック ・図、第４区は第３図示各
部の信号波形の一例を示す線図、第５図はパルス性ノイ
ズ検出回路１１の実施例の電気回路図、第６図はクラン
プ回路１４の実施例の電気回路図である。
１は受信アンテナ、２はＦＭ用のフロントエンド、３は
中間周波増幅回路および検波回路、４はＦＭチューナ、
５は切換スイッチ、６はパワーアンプ、７はスピーカ、
８は同調用のつまみ、９゜１０は同調回路、１１はパル
ス性ノイズ検出回−路、１２は遅延回路、１３はパルス
幅９Ｊ”３ ＝回路、１４はクランプ回路である。Figure 1 is a line diagram showing an example of the waveforms of pulse noise PN and multipath noise MPN that appear in the FM detection output, and Figure 2 is a line diagram that shows an example of the waveforms of pulse noise PN and multipath noise that appear in the signal level signal. Figures 3 and 3 are main blocks of an embodiment of the present invention. Figures 4 and 4 are diagrams showing examples of signal waveforms at various parts shown in Figure 3, and Figure 5 is a diagram showing an example of the pulse noise detection circuit 11. Electrical Circuit Diagram FIG. 6 is an electrical circuit diagram of an embodiment of the clamp circuit 14. 1 is a receiving antenna, 2 is a front end for FM, 3 is an intermediate frequency amplification circuit and a detection circuit, 4 is an FM tuner,
5 is a changeover switch, 6 is a power amplifier, 7 is a speaker,
8 is a tuning knob, 9.degree. 10 is a tuning circuit, 11 is a pulse noise detection circuit, 12 is a delay circuit, 13 is a pulse width 9J''3 = circuit, and 14 is a clamp circuit.
Claims (1)
されておりＡＭ受信系統の同調周波数を設定ずれはＦＭ
受信系統の同調周波数が一義的に決定されてしまう受信
機において、ＦＭ受信系統のシグナルレベル信号を基準
電圧と比較してパルス性ノイズ検出信号を出力するノイ
ズ検出回路と、該ノイズ検出回路のパルス性ノイズ検出
信号を所定時間遅延すると共にそのパルス幅を調整する
補正回路と、該補正回路の出力パルス幅に相当する時間
たけＮ受信系統の再生レベルを直前のレベルにクランプ
するクランプ回路と、ＡＭ受信時にＦＭ受信系統の少な
くとも前記シグナルレベル信号を生成する部分までは動
作させる手段とを具備したことを特徴とするＡＭ受信機
用ノイズブランカ装罫。A part of the tuning mechanism is shared between the AM reception system and the FM reception system, and the difference in setting the tuning frequency of the AM reception system is FM.
In a receiver in which the tuning frequency of the receiving system is uniquely determined, there is provided a noise detection circuit that compares the signal level signal of the FM receiving system with a reference voltage and outputs a pulsed noise detection signal, and a pulse detection circuit of the noise detection circuit. AM 1. A noise blanker rule for an AM receiver, comprising means for operating at least a portion of an FM receiving system up to the point where the signal level signal is generated during reception.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1393184U JPS60127051U (en) | 1984-02-03 | 1984-02-03 | Noise blanker device for AM receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1393184U JPS60127051U (en) | 1984-02-03 | 1984-02-03 | Noise blanker device for AM receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60127051U true JPS60127051U (en) | 1985-08-27 |
Family
ID=30498389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1393184U Pending JPS60127051U (en) | 1984-02-03 | 1984-02-03 | Noise blanker device for AM receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60127051U (en) |
-
1984
- 1984-02-03 JP JP1393184U patent/JPS60127051U/en active Pending
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