JPS5929855U - AM stereo signal demodulation circuit - Google Patents
AM stereo signal demodulation circuitInfo
- Publication number
- JPS5929855U JPS5929855U JP12631782U JP12631782U JPS5929855U JP S5929855 U JPS5929855 U JP S5929855U JP 12631782 U JP12631782 U JP 12631782U JP 12631782 U JP12631782 U JP 12631782U JP S5929855 U JPS5929855 U JP S5929855U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- stereo
- filter
- switched
- intermediate frequency
- 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.)
- Granted
Links
Landscapes
- 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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図は本考案の一例の系統図である。
１１は入力端子、１２はリミッタ、１３．２２はバラン
スドミキサ、１４はＰＬＬ回路、１５は位相比較器、２
３．２４は移相回路網、２５．２６はスイッチ、２７は
マトリクス回路、２８．２９は出力端子、３０，３１は
バンドパスフィルタ、３２．３３はコンパレータ、３５
は発光ダイオードである。The figure is a system diagram of an example of the present invention. 11 is an input terminal, 12 is a limiter, 13.22 is a balanced mixer, 14 is a PLL circuit, 15 is a phase comparator, 2
3.24 is a phase shift circuit network, 25.26 is a switch, 27 is a matrix circuit, 28.29 is an output terminal, 30, 31 is a band pass filter, 32.33 is a comparator, 35
is a light emitting diode.
Claims (1)
るエンベロープ検波手段と、上記中間周波信号をステレ
オ方式に無関係に所定の除算係数で割算した信号と上記
中間周波信号をＰＬＬ回路を通して得られる信号とによ
り差信号（Ｌ−Ｒ）を得る同期検波手段と、上記ステレ
オ方式の内の特定のステレオ方式に対応する位相補正手
段と、上記和信号及び差信号を混合して左チャンネル信
号り及び右チャンネル信号Ｒを得るマトリクス回路とを
有し、上記ＰＬＬ回路の位相比較出力が第１及び第２の
バンドパスフィルタに供給され、上記第１のバンドパス
フィルタは上記ステレオ方式の内の上記特定のステレオ
方式のパイロット信号に対応した狭帯域Ｌイルタであっ
て、上記第１のバンドパスフィルタの出力により上記位
相補正回路の接続が切換、Ｉ られ、上記第２のバンドパスフィルタは上記ステレオ方
式の全方式のパイロット信号に対応した広帯域のフィル
タであって、上記第２のバントバスフィルタの出力によ
りステレオ受信表示手段の切換が行われるようにしたこ
とを特徴とするＡＭステレオ受信機。[Claims for Utility Model Registration] Envelope detection means for obtaining a sum signal (L+R) from the envelope of an intermediate frequency signal, a signal obtained by dividing the intermediate frequency signal by a predetermined division coefficient regardless of the stereo system, and the intermediate frequency signal. and a signal obtained through a PLL circuit to obtain a difference signal (L-R), a phase correction means corresponding to a specific stereo system among the stereo systems, and a signal that mixes the sum signal and the difference signal. and a matrix circuit for obtaining a left channel signal and a right channel signal R, the phase comparison output of the PLL circuit is supplied to first and second band pass filters, and the first band pass filter The narrow band L filter corresponds to the pilot signal of the specific stereo system among the systems, and the connection of the phase correction circuit is switched by the output of the first band pass filter, and the connection of the phase correction circuit is switched to AM characterized in that the pass filter is a wide band filter compatible with pilot signals of all the stereo systems, and the stereo reception display means is switched by the output of the second bandpass filter. stereo receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12631782U JPS5929855U (en) | 1982-08-20 | 1982-08-20 | AM stereo signal demodulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12631782U JPS5929855U (en) | 1982-08-20 | 1982-08-20 | AM stereo signal demodulation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5929855U true JPS5929855U (en) | 1984-02-24 |
| JPS6238370Y2 JPS6238370Y2 (en) | 1987-09-30 |
Family
ID=30287271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12631782U Granted JPS5929855U (en) | 1982-08-20 | 1982-08-20 | AM stereo signal demodulation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5929855U (en) |
-
1982
- 1982-08-20 JP JP12631782U patent/JPS5929855U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6238370Y2 (en) | 1987-09-30 |
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