JPS59195853U - Pilot signal cancel circuit - Google Patents
Pilot signal cancel circuitInfo
- Publication number
- JPS59195853U JPS59195853U JP8899583U JP8899583U JPS59195853U JP S59195853 U JPS59195853 U JP S59195853U JP 8899583 U JP8899583 U JP 8899583U JP 8899583 U JP8899583 U JP 8899583U JP S59195853 U JPS59195853 U JP S59195853U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- wave signal
- pilot signal
- circuit
- pilot
- 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
- 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図は従来のパイロット信号キャンセル回路の一例の
回路構成図、第２図は本考案回路の一実施例の回路構成
図、第３図Ａ−Ｇは第２図示の回路各部の信号波形図で
ある。
１・・・マルチプレックス復調集積回路（ＭＰＸ−ＩＣ
）、２・・・入力端子、３・・・帯域フィルタ、４・・
・位相比較器、５・・・低域フィルタ、６・・・電圧制
御型発振器、７．８・・・分周器、９・・・スイッチン
グ回路、１０〜１５・・・増幅器、Ｃ□〜Ｃ８・・・コ
ンデンサ、Ｄ工・・・可変容量ダイオード、Ｌｌ、Ｌ２
・・・コイル、Ｒ□〜Ｒ６・・・抵抗。Fig. 1 is a circuit diagram of an example of a conventional pilot signal cancellation circuit, Fig. 2 is a circuit diagram of an embodiment of the circuit of the present invention, and Figs. 3A to 3G are signal waveform diagrams of various parts of the circuit shown in Fig. 2. It is. 1...Multiplex demodulation integrated circuit (MPX-IC
), 2... input terminal, 3... bandpass filter, 4...
- Phase comparator, 5... Low-pass filter, 6... Voltage controlled oscillator, 7.8... Frequency divider, 9... Switching circuit, 10-15... Amplifier, C□- C8...Capacitor, D...Variable capacitance diode, Ll, L2
...Coil, R□~R6...Resistance.
Claims (1)
プレックス復調集積回路の出力する矩形波信号を積分し
て該パイロット信号と逆相の三角波信号とする積分回路
と、該三角波信号の高調波成分を除去して正弦波信号と
する可変同調回路と、該矩形波信号を用いて該正弦波信
号の位相検波を行ない該可変同調回路の共振周波数を可
変するための制御電圧を取り出す位相検波回路とよりな
り、ＦＭステレオ放送のコンポジット信号に該正弦波信
号を混合して該ｉンポジット信号中の該パイロット信号
を除去するパイロット信号キャンセル回路。An integrating circuit that integrates a rectangular wave signal output from a multiplex demodulation integrated circuit that has the same frequency and synchronization as a pilot signal to produce a triangular wave signal with an opposite phase to the pilot signal, and removes harmonic components of the triangular wave signal. and a phase detection circuit that detects the phase of the sine wave signal using the rectangular wave signal and extracts a control voltage for varying the resonant frequency of the variable tuning circuit. , a pilot signal cancellation circuit that mixes the sine wave signal with a composite signal of FM stereo broadcasting and removes the pilot signal in the composite signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8899583U JPS59195853U (en) | 1983-06-10 | 1983-06-10 | Pilot signal cancel circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8899583U JPS59195853U (en) | 1983-06-10 | 1983-06-10 | Pilot signal cancel circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59195853U true JPS59195853U (en) | 1984-12-26 |
Family
ID=30218891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8899583U Pending JPS59195853U (en) | 1983-06-10 | 1983-06-10 | Pilot signal cancel circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59195853U (en) |
-
1983
- 1983-06-10 JP JP8899583U patent/JPS59195853U/en active Pending
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