JPS6190311U - - Google Patents
Info
- Publication number
- JPS6190311U JPS6190311U JP17618884U JP17618884U JPS6190311U JP S6190311 U JPS6190311 U JP S6190311U JP 17618884 U JP17618884 U JP 17618884U JP 17618884 U JP17618884 U JP 17618884U JP S6190311 U JPS6190311 U JP S6190311U
- Authority
- JP
- Japan
- Prior art keywords
- control signal
- comparator
- agc
- signal
- outputs
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
第１図は本考案の一実施例によるＡＧＣ回路を
示す図、第２図は従来のＡＧＣ回路を示す図、第
３図ａは雑音のないときの入力信号波形、第３図
ｂは同図ａのコンパレータ出力、第３図ｃは無信
号時の雑音波形、第３図ｄは第１図の回路による
同図ｃのコンパレータ出力、第３図ｅは同図ａ＋
ｃの波形、第３図ｆは第２図の回路における同図
ｅのコンパレータ出力波形である。
１……信号入力端子、２……信号出力端子、３
……ＡＧＣ増幅器、５……コンパレータ、６……
ハイレベル信号検出器及びコントローラ、７……
ＡＧＣ電圧発生器。
FIG. 1 is a diagram showing an AGC circuit according to an embodiment of the present invention, FIG. 2 is a diagram showing a conventional AGC circuit, FIG. 3 a is an input signal waveform when there is no noise, and FIG. 3 b is the same diagram. Fig. 3 c is the noise waveform when there is no signal, Fig. 3 d is the comparator output of Fig. 3 c by the circuit in Fig. 1, Fig. 3 e is the comparator output in Fig. 3 a +
FIG. 3f is the waveform of the comparator output of FIG. 3e in the circuit of FIG. 2. 1...Signal input terminal, 2...Signal output terminal, 3
...AGC amplifier, 5...Comparator, 6...
High level signal detector and controller, 7...
AGC voltage generator.
Claims (1)
と、前記ＡＧＣ増幅器の出力を受け所定レベル以
上のとき信号を出力するコンパレータと、前記コ
ンパレータからの信号が入力され所定時間以内に
再度コンパレータ出力が入力されたとき制御信号
を出力する制御信号発生器と、前記制御信号発生
器からの制御信号を受け、ＡＧＣ電圧を発生する
ＡＧＣ電圧発生器とを備えたことを特徴とするＡ
ＧＣ回路。 an AGC amplifier whose gain is controlled by a control voltage; a comparator that receives the output of the AGC amplifier and outputs a signal when the level is higher than a predetermined level; and a signal from the comparator is input and the comparator output is input again within a predetermined time. A, characterized in that it is equipped with a control signal generator that outputs a control signal at the time, and an AGC voltage generator that receives the control signal from the control signal generator and generates an AGC voltage.
GC circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17618884U JPS6190311U (en) | 1984-11-20 | 1984-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17618884U JPS6190311U (en) | 1984-11-20 | 1984-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6190311U true JPS6190311U (en) | 1986-06-12 |
Family
ID=30733786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17618884U Pending JPS6190311U (en) | 1984-11-20 | 1984-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6190311U (en) |
-
1984
- 1984-11-20 JP JP17618884U patent/JPS6190311U/ja active Pending