JPS5981119U - AGC circuit - Google Patents
AGC circuitInfo
- Publication number
- JPS5981119U JPS5981119U JP17623682U JP17623682U JPS5981119U JP S5981119 U JPS5981119 U JP S5981119U JP 17623682 U JP17623682 U JP 17623682U JP 17623682 U JP17623682 U JP 17623682U JP S5981119 U JPS5981119 U JP S5981119U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- agc
- gain
- level
- output signal
- 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
- Television Receiver Circuits (AREA)
- Control Of Amplification And Gain Control (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ＡＧＣ回路の一例を示すブロック図、第
２図〜第４図はその動作説明に供する波形図、第５図及
び第７図は夫々この考案におけるＡＧＣ回路の一例を示
す接続図、第６図はその動作説明に供する波形図である
。
２は利得制御アンプ、４はＡＧＣ制御系、１１は基準電
圧発生源、１５はレベル判別回路、１６゜１７．３１は
電圧比較器、２５はレベル検出回路である。
第１図
５１，７
１ “−
（”°゛５、
」
第５図Fig. 1 is a block diagram showing an example of a conventional AGC circuit, Figs. 2 to 4 are waveform diagrams for explaining its operation, and Figs. 5 and 7 are connections showing an example of the AGC circuit in this invention, respectively. 6 are waveform diagrams for explaining the operation. 2 is a gain control amplifier, 4 is an AGC control system, 11 is a reference voltage generation source, 15 is a level discrimination circuit, 16° 17.31 is a voltage comparator, and 25 is a level detection circuit. Fig. 1 51, 7 1 “- (”°゛5, ” Fig. 5
Claims (1)
のパイロット信号が抽出され、抽出され−たこのパイロ
ット信号のレベルに基づいて上記利得制御アンプの利得
が制御されるＡＧＣｉｌ！御系を有すると共に、上記出
力信号の飽和状態を検出するレベル判別回路が設けられ
、飽和状態のときに得られる判別出力で、上記ＡＧＣ制
御系より得られるＡ、ＧＣｉＩ制御信号に換え基準レベ
ルの信号がＡＧＣ制御信号として、上記利得制御アンプ
に供−給される様になされたＡＧＣ回路。A pilot signal for AGC control is extracted from the output signal of the gain control amplifier, and the gain of the gain control amplifier is controlled based on the level of the extracted pilot signal. A level discrimination circuit is provided to detect the saturation state of the output signal, and the discrimination output obtained when the output signal is saturated is used to convert the A and GCiI control signals obtained from the AGC control system to the reference level. An AGC circuit in which a signal is supplied to the gain control amplifier as an AGC control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17623682U JPS5981119U (en) | 1982-11-19 | 1982-11-19 | AGC circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17623682U JPS5981119U (en) | 1982-11-19 | 1982-11-19 | AGC circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5981119U true JPS5981119U (en) | 1984-06-01 |
Family
ID=30383212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17623682U Pending JPS5981119U (en) | 1982-11-19 | 1982-11-19 | AGC circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5981119U (en) |
-
1982
- 1982-11-19 JP JP17623682U patent/JPS5981119U/en active Pending
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