JPS6447132U - - Google Patents

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Publication number
JPS6447132U
JPS6447132U JP1987142228U JP14222887U JPS6447132U JP S6447132 U JPS6447132 U JP S6447132U JP 1987142228 U JP1987142228 U JP 1987142228U JP 14222887 U JP14222887 U JP 14222887U JP S6447132 U JPS6447132 U JP S6447132U
Authority
JP
Japan
Prior art keywords
circuit
output signal
frequency
vco
phase comparison
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
Application number
JP1987142228U
Other languages
Japanese (ja)
Other versions
JPH0641406Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987142228U priority Critical patent/JPH0641406Y2/en
Publication of JPS6447132U publication Critical patent/JPS6447132U/ja
Application granted granted Critical
Publication of JPH0641406Y2 publication Critical patent/JPH0641406Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Television Receiver Circuits (AREA)
  • Stereo-Broadcasting Methods (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本考案の一実施例を示す回路図、及
び第２図は従来のＰＬＬ方式の判別回路を示す回
路図。 １８……第１ＰＬＬ回路、２１……ＶＣＯ、２
５……第２ＰＬＬ回路、２８……第２分周回路、
２９……コンパレータ、３４……ＡＭ検波回路。 FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional PLL type discrimination circuit. 18 ...First PLL circuit, 21...VCO, 2
5 ...Second PLL circuit, 28...Second frequency dividing circuit,
29... Comparator, 34... AM detection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ステレオ副搬送波を再生する為のＰＬＬ回路を
有するＦＭステレオ受信機において、前記ＰＬＬ
回路内のＶＣＯの発振出力信号を分周する分周回
路と、ＦＭ検波回路からのテレビジヨン音声多重
信号中の制御チヤンネル信号のＡＭ検波を行なう
ＡＭ検波回路と、該ＡＭ検波回路の出力信号と前
記分周回路の分周出力信号との位相比較を行なう
位相比較回路と、該位相比較回路の出力信号を平
滑するローパスフイルタとを設け、前記分周出力
信号の周波数を２つの制御チヤンネル信号の周波
数の間の値に設定するとともに前記ローパスフイ
ルタの出力信号で前記ＶＣＯを制御し、テレビジ
ヨン音声多重放送を受信可能にしたことを特徴と
するＦＭステレオ受信機。 In an FM stereo receiver having a PLL circuit for reproducing stereo subcarriers, the PLL circuit
A frequency dividing circuit that divides the oscillation output signal of the VCO in the circuit, an AM detection circuit that performs AM detection of the control channel signal in the television audio multiplexed signal from the FM detection circuit, and an output signal of the AM detection circuit. A phase comparison circuit that performs a phase comparison with the frequency-divided output signal of the frequency divider circuit and a low-pass filter that smoothes the output signal of the phase comparison circuit are provided, and the frequency of the frequency-divided output signal is adjusted to match the frequency of the frequency-divided output signal of the two control channel signals. An FM stereo receiver, characterized in that the VCO is set to a value between frequencies and the VCO is controlled by the output signal of the low-pass filter, thereby making it possible to receive television audio multiplex broadcasts.
JP1987142228U 1987-09-17 1987-09-17 FM stereo receiver Expired - Lifetime JPH0641406Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987142228U JPH0641406Y2 (en) 1987-09-17 1987-09-17 FM stereo receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987142228U JPH0641406Y2 (en) 1987-09-17 1987-09-17 FM stereo receiver

Publications (2)

Publication Number Publication Date
JPS6447132U true JPS6447132U (en) 1989-03-23
JPH0641406Y2 JPH0641406Y2 (en) 1994-10-26

Family

ID=31407998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987142228U Expired - Lifetime JPH0641406Y2 (en) 1987-09-17 1987-09-17 FM stereo receiver

Country Status (1)

Country Link
JP (1) JPH0641406Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555639A (en) * 1978-10-19 1980-04-23 Nippon Gakki Seizo Kk Demodulation system of multiplex modulation wave

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555639A (en) * 1978-10-19 1980-04-23 Nippon Gakki Seizo Kk Demodulation system of multiplex modulation wave

Also Published As

Publication number Publication date
JPH0641406Y2 (en) 1994-10-26

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