JPS6064646U - Muting signal generation circuit - Google Patents
Muting signal generation circuitInfo
- Publication number
- JPS6064646U JPS6064646U JP15579783U JP15579783U JPS6064646U JP S6064646 U JPS6064646 U JP S6064646U JP 15579783 U JP15579783 U JP 15579783U JP 15579783 U JP15579783 U JP 15579783U JP S6064646 U JPS6064646 U JP S6064646U
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- muting
- signal generation
- level
- generation circuit
- 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
- 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図は本考案に係るミューティング信号発生 ′
、−回路の一実施例を示す回路図、第２図は入力信号対
出力特性を示す図、第３１図は本考案めミューテ°・イ
ング信号発生回路のや作を説明する轡の図である。
−Figure 1 shows muting signal generation according to the present invention.
-A circuit diagram showing one embodiment of the circuit, Fig. 2 is a diagram showing input signal versus output characteristics, and Fig. 31 is a diagram explaining the structure of the muting signal generation circuit of the present invention. .
−
Claims (2)
周波数または中間周波数を通過させる帯域゛ 通
過フィルタのいずれかの周波数帯域の中心点をずらすこ
とによって、入力電界強度が低レベルとなったとき、ク
オドラーチャ検波器の直流−レベルを変動させ、該グオ
ドラーチャ検波器の直流レベルの変動を比較器によって
ミューティング・レベルを検出し、該比較器からミュー
ティング信号を゛発生さすることを特徴とす、るミュー
ティング信号発生回路。(1) In the FM receiver, the input electric field strength is reduced to a low level by shifting the center point of one of the frequency bands of the intermediate frequency from the frequency conversion circuit or the band pass filter that passes the intermediate frequency. When the DC level of the quadrature detector is varied, a muting level is detected by a comparator based on the variation in the DC level of the quadrature detector, and a muting signal is generated from the comparator. Muting signal generation circuit.
ーティングレベルを設定する基準電圧が比較器に入力さ
れ、該比較器からミューティング信号を得る実用新案登
録請求の範囲第１項記載のミューテざング信号発生回路
。 −（３） クオドラーチャ検波器からの
出力をバッファ回路を介して得、該バッファ回路の出力
の内、交流成分をフィルタ回路を介し除去し、該フィル
タ回路から得られる直流出力を比較器に入力する実用新
案登録請求の範囲第１項記載のミューティング信号発生
回路。 ゛(2) The direct current component from the driver detector and the reference voltage for setting the muting level are input to a comparator, and a muting signal is obtained from the comparator.Claim 1 of the Utility Model Registration Claim The mutezanging signal generation circuit described. -(3) Obtain the output from the quadrature detector via a buffer circuit, remove the AC component from the output of the buffer circuit via a filter circuit, and input the DC output obtained from the filter circuit to the comparator. A muting signal generation circuit according to claim 1 of the utility model registration claim.゛
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15579783U JPS6064646U (en) | 1983-10-07 | 1983-10-07 | Muting signal generation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15579783U JPS6064646U (en) | 1983-10-07 | 1983-10-07 | Muting signal generation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6064646U true JPS6064646U (en) | 1985-05-08 |
| JPH0441641Y2 JPH0441641Y2 (en) | 1992-09-30 |
Family
ID=30343978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15579783U Granted JPS6064646U (en) | 1983-10-07 | 1983-10-07 | Muting signal generation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6064646U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54111201A (en) * | 1978-02-20 | 1979-08-31 | Nec Corp | Signal processing circuit |
| JPS57104643U (en) * | 1980-12-18 | 1982-06-28 |
-
1983
- 1983-10-07 JP JP15579783U patent/JPS6064646U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54111201A (en) * | 1978-02-20 | 1979-08-31 | Nec Corp | Signal processing circuit |
| JPS57104643U (en) * | 1980-12-18 | 1982-06-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0441641Y2 (en) | 1992-09-30 |
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