JPS61139076U - - Google Patents
Info
- Publication number
- JPS61139076U JPS61139076U JP2147785U JP2147785U JPS61139076U JP S61139076 U JPS61139076 U JP S61139076U JP 2147785 U JP2147785 U JP 2147785U JP 2147785 U JP2147785 U JP 2147785U JP S61139076 U JPS61139076 U JP S61139076U
- Authority
- JP
- Japan
- Prior art keywords
- agc circuit
- modulation
- reference bias
- circuit
- positive
- 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
- 238000000034 method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は、本考案の一実施例の正変調および負
変調方式における両立性ＡＧＣ回路の回路図、第
２図は従来例の両用型ＡＧＣ回路、第３図のＡは
負変調方式の映像信号の波形図、Ｂは検波出力信
号の波形図、第４図のＡは正変調方式の映像信号
の波形図、Ｂは検波出力信号の波形図である。
図中、符号１はキードＡＧＣ回路、９は基準バ
イアス切換回路である。
Fig. 1 is a circuit diagram of an AGC circuit compatible with positive modulation and negative modulation methods according to an embodiment of the present invention, Fig. 2 is a conventional dual-use AGC circuit, and A in Fig. 3 is an image of a negative modulation method. In FIG. 4, A is a waveform diagram of a positive modulation video signal, and B is a waveform diagram of a detection output signal. In the figure, numeral 1 is a keyed AGC circuit, and 9 is a reference bias switching circuit.
Claims (1)
基準バイアスを負変調用と正変調用とに切換える
基準バイアス切換回路とを備えた正変調および負
変調方式における両立性ＡＧＣ回路。 An AGC circuit compatible with positive modulation and negative modulation methods, comprising a keyed AGC circuit and a reference bias switching circuit that switches the reference bias of the keyed AGC circuit between negative modulation and positive modulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2147785U JPS61139076U (en) | 1985-02-18 | 1985-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2147785U JPS61139076U (en) | 1985-02-18 | 1985-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61139076U true JPS61139076U (en) | 1986-08-28 |
Family
ID=30512907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2147785U Pending JPS61139076U (en) | 1985-02-18 | 1985-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61139076U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5046038A (en) * | 1973-08-28 | 1975-04-24 |
-
1985
- 1985-02-18 JP JP2147785U patent/JPS61139076U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5046038A (en) * | 1973-08-28 | 1975-04-24 |
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