JPS596353U - AM stereo demodulator - Google Patents
AM stereo demodulatorInfo
- Publication number
- JPS596353U JPS596353U JP9815782U JP9815782U JPS596353U JP S596353 U JPS596353 U JP S596353U JP 9815782 U JP9815782 U JP 9815782U JP 9815782 U JP9815782 U JP 9815782U JP S596353 U JPS596353 U JP S596353U
- Authority
- JP
- Japan
- Prior art keywords
- sub
- electric field
- stereo demodulator
- signal component
- field level
- 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ＡＭステレオ復調器のブロック図、第２
図はメイン信号復調器の特性図、第３図はサブ信号復調
器の特性図、第４図は電圧制御減衰器の特性図、第５図
は電圧制御減衰器からのサブ信号出力を示す特性図、第
６図は本考案の一実施例のブロック図、第７図は電界強
度制御回路の一例を示す回路図、第８図は第７図に示す
電界強度制御回路の特性図である。
１・・・チューナ、２・・・メイン信号復調器、３・・
・マトリックス回路、４・・・サブ信号復調器、５・・
・電圧制御減衰器、６・・・電界強度レベル検出回路、
７・・・電界強度制御回路。Figure 1 is a block diagram of a conventional AM stereo demodulator, Figure 2 is a block diagram of a conventional AM stereo demodulator.
The figure shows the characteristics of the main signal demodulator, Figure 3 shows the characteristics of the sub-signal demodulator, Figure 4 shows the characteristics of the voltage-controlled attenuator, and Figure 5 shows the characteristics of the sub-signal output from the voltage-controlled attenuator. 6 is a block diagram of an embodiment of the present invention, FIG. 7 is a circuit diagram showing an example of a field strength control circuit, and FIG. 8 is a characteristic diagram of the field strength control circuit shown in FIG. 1... Tuner, 2... Main signal demodulator, 3...
・Matrix circuit, 4... Sub signal demodulator, 5...
・Voltage control attenuator, 6... electric field strength level detection circuit,
7... Electric field strength control circuit.
Claims (1)
出し電界レベルの低下に応じてサブ信号成分を減衰させ
て分離度を補正するＡＭステレオ復調器において、前記
電界レベルが所定レベル以下のとき前記サブ信号成分の
減少量を増加させて分離度を悪化させることによってＳ
／Ｎを向上させるようにしてなることを特徴とするＡＭ
ステレオ復調器。In an AM stereo demodulator that performs phase detection on a sub-signal component, detects an electric field level, and corrects separation by attenuating the sub-signal component according to a decrease in the electric field level, when the electric field level is below a predetermined level, the sub-signal component is detected. By increasing the reduction amount of signal components and worsening the degree of separation, S
AM characterized by improving /N.
Stereo demodulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9815782U JPS596353U (en) | 1982-07-01 | 1982-07-01 | AM stereo demodulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9815782U JPS596353U (en) | 1982-07-01 | 1982-07-01 | AM stereo demodulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS596353U true JPS596353U (en) | 1984-01-17 |
Family
ID=30233173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9815782U Pending JPS596353U (en) | 1982-07-01 | 1982-07-01 | AM stereo demodulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596353U (en) |
-
1982
- 1982-07-01 JP JP9815782U patent/JPS596353U/en active Pending
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