JPS5816958U - FM receiver - Google Patents
FM receiverInfo
- Publication number
- JPS5816958U JPS5816958U JP10998481U JP10998481U JPS5816958U JP S5816958 U JPS5816958 U JP S5816958U JP 10998481 U JP10998481 U JP 10998481U JP 10998481 U JP10998481 U JP 10998481U JP S5816958 U JPS5816958 U JP S5816958U
- Authority
- JP
- Japan
- Prior art keywords
- harmonic
- detection circuit
- signal
- circuit
- signal detected
- 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)
- Stereo-Broadcasting Methods (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図は従来のＦＭ受信機のブロック図、第２図は本考
案によるＦＭ受信機の一実施例を示すブロック図、第３
図は本考案の一実施例の変調度との関係を示す特性図で
第４図は本考案の高調信号調整回路の他の実施例を示す
回路である。
図において１はＦＭ検波器、２は衝撃性雑音除去回路、
３はステレオ復調回路、４はＳＲＣ回路、２０は高調波
出力端子、２１はステレオ制御端子、２２は周波数特性
制御端子である。図中、同一符号は同−又は相当部分を
示す。FIG. 1 is a block diagram of a conventional FM receiver, FIG. 2 is a block diagram showing an embodiment of the FM receiver according to the present invention, and FIG.
The figure is a characteristic diagram showing the relationship with the modulation degree of one embodiment of the present invention, and FIG. 4 is a circuit showing another embodiment of the harmonic signal adjustment circuit of the present invention. In the figure, 1 is an FM detector, 2 is an impulsive noise removal circuit,
3 is a stereo demodulation circuit, 4 is an SRC circuit, 20 is a harmonic output terminal, 21 is a stereo control terminal, and 22 is a frequency characteristic control terminal. In the figures, the same reference numerals indicate the same or corresponding parts.
Claims (2)
、このＦＭ検波回路で検波したＦＭ信号内の高調波成分
を検出する高調波検出回路と、上記ＦＭ検波回路で検波
されたＦＭ信号を復調する復調回路と、上記高調波検出
回路により検出された高調波成分の信号のレベルが所定
レベル以上になった時、ステレオ受信状態からモノラル
受信状態に変える出力信号、または高音域成分を除去す
る出力信号を上記復調回路へ出力する制御回路と、上記
ＦＭ検波回路そ検波したＦＭ信号の変調度に応じて高調
波信号が上記制御回路に所定レベル以上入力されないよ
うに調整する高調波信号調整回路とを備えたＦＭ受信機
。(1) An FM detection circuit that detects the FM signal from the received signal, a harmonic detection circuit that detects harmonic components in the FM signal detected by this FM detection circuit, and an FM detection circuit that detects the FM signal detected by the FM detection circuit. When the level of the harmonic component signal detected by the demodulation circuit and the harmonic detection circuit exceeds a predetermined level, the output signal changes from a stereo reception state to a monaural reception state, or removes the high frequency component. a control circuit that outputs an output signal to the demodulation circuit; and a harmonic signal adjustment circuit that adjusts the harmonic signal so that it does not exceed a predetermined level, depending on the degree of modulation of the FM signal detected by the FM detection circuit. FM receiver equipped with.
上記高調波信号を所定レベル以上上記制御回路に入力す
る時に作動するトランジスタを上記高調波調整回路が備
えたことを特徴とする実用新案登録請求の範囲第１項記
載のＦＭ受信機。(2) A utility model characterized in that the harmonic adjustment circuit includes a transistor that operates when the modulation degree of the FM signal detected by the FM detection circuit exceeds a predetermined level of the harmonic signal input to the control circuit. FM receiver according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10998481U JPS5816958U (en) | 1981-07-23 | 1981-07-23 | FM receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10998481U JPS5816958U (en) | 1981-07-23 | 1981-07-23 | FM receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5816958U true JPS5816958U (en) | 1983-02-02 |
Family
ID=29904343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10998481U Pending JPS5816958U (en) | 1981-07-23 | 1981-07-23 | FM receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5816958U (en) |
-
1981
- 1981-07-23 JP JP10998481U patent/JPS5816958U/en active Pending
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