JPS6014575U - Audio detection circuit - Google Patents
Audio detection circuitInfo
- Publication number
- JPS6014575U JPS6014575U JP10651883U JP10651883U JPS6014575U JP S6014575 U JPS6014575 U JP S6014575U JP 10651883 U JP10651883 U JP 10651883U JP 10651883 U JP10651883 U JP 10651883U JP S6014575 U JPS6014575 U JP S6014575U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- video
- audio
- audio detection
- degrees
- 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)
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図は従来の検波回路を示すブロック図、第２図は検
波回路の一部の特性を示す特性図、第３図は本考案に係
る検波回路の実施例を示すブロック図である。
３１．３７・・・増幅回路、３２・・・リミッタ、３３
゜３６・・・検波回路、３４・・・ＡＧＣ回路、３５・
・・移相回路、FIG. 1 is a block diagram showing a conventional detection circuit, FIG. 2 is a characteristic diagram showing some characteristics of the detection circuit, and FIG. 3 is a block diagram showing an embodiment of the detection circuit according to the present invention. 31.37... Amplifier circuit, 32... Limiter, 33
゜36...Detection circuit, 34...AGC circuit, 35.
...phase shift circuit,
Claims (1)
帯域幅を有して通過させる帯域フィルタと、 前記映像搬送波を９０°移送する移送回路と、この移送
回路で９０°移送された映像搬送波と前記帯域フィルタ
の出力信号とを掛算検波して、音声中間周波信号を得る
検波回路とを具備することを特徴とする音声検波回路。[Claims for Utility Model Registration] A bandpass filter that extracts video and audio carrier waves of a video intermediate frequency signal and passes them with a predetermined bandwidth; a transfer circuit that transfers the video carrier waves by 90 degrees; An audio detection circuit comprising: a detection circuit for multiplying and detecting a video carrier wave shifted by 90 degrees and an output signal of the bandpass filter to obtain an audio intermediate frequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10651883U JPS6014575U (en) | 1983-07-11 | 1983-07-11 | Audio detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10651883U JPS6014575U (en) | 1983-07-11 | 1983-07-11 | Audio detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6014575U true JPS6014575U (en) | 1985-01-31 |
Family
ID=30249240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10651883U Pending JPS6014575U (en) | 1983-07-11 | 1983-07-11 | Audio detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6014575U (en) |
-
1983
- 1983-07-11 JP JP10651883U patent/JPS6014575U/en active Pending
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