JPS61126676U - - Google Patents
Info
- Publication number
- JPS61126676U JPS61126676U JP880585U JP880585U JPS61126676U JP S61126676 U JPS61126676 U JP S61126676U JP 880585 U JP880585 U JP 880585U JP 880585 U JP880585 U JP 880585U JP S61126676 U JPS61126676 U JP S61126676U
- Authority
- JP
- Japan
- Prior art keywords
- sub
- signal
- carrier
- output
- circuit
- 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
- 230000002596 correlated effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 1
Landscapes
- Stereo-Broadcasting Methods (AREA)
- Television Receiver Circuits (AREA)
Description
第１図は従来例のブロツク図、第２図は本考案
の一実施例を示すブロツク図、第３図は多重信号
のスペクトラムを示す図である。
１１……電圧制御利得可変アンプ、１２……レ
ベル検出器、１３……加算器、１４……減算器、
１５……バンドパスフイルタ（）、１６……Ｆ
Ｍ検波器、１７……バンドパスフイルタ（）、
１８……ＡＭ検波器、１９……周波数判別器、２
０……ステレオインジケータ。
FIG. 1 is a block diagram of a conventional example, FIG. 2 is a block diagram showing an embodiment of the present invention, and FIG. 3 is a diagram showing a spectrum of a multiplexed signal. 11... Voltage controlled gain variable amplifier, 12... Level detector, 13... Adder, 14... Subtractor,
15...Band pass filter (), 16...F
M detector, 17...Band pass filter (),
18...AM detector, 19...frequency discriminator, 2
0...Stereo indicator.
Claims (1)
の出力とメイン信号の出力とをマトリツクスする
加・減算回路を具備するものにおいて、サブキヤ
リアと相関性のある信号レベルを検出して、サブ
信号もしくはメイン信号を通す電圧制御利得可変
アンプの利得を制御するように構成したことを特
徴とするＴＶ音声多重信号復調回路。 A device equipped with an addition/subtraction circuit that matrixes the output of the sub-signal obtained by FM demodulating the sub-carrier and the output of the main signal, detects a signal level correlated with the sub-carrier and converts the sub-signal or the main signal. 1. A TV audio multiplex signal demodulation circuit characterized in that the circuit is configured to control the gain of a voltage-controlled variable gain amplifier that is passed through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP880585U JPS61126676U (en) | 1985-01-24 | 1985-01-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP880585U JPS61126676U (en) | 1985-01-24 | 1985-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61126676U true JPS61126676U (en) | 1986-08-08 |
Family
ID=30488430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP880585U Pending JPS61126676U (en) | 1985-01-24 | 1985-01-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61126676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63263842A (en) * | 1987-04-21 | 1988-10-31 | Clarion Co Ltd | Radio receiver |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5536675B2 (en) * | 1972-04-11 | 1980-09-22 |
-
1985
- 1985-01-24 JP JP880585U patent/JPS61126676U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5536675B2 (en) * | 1972-04-11 | 1980-09-22 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63263842A (en) * | 1987-04-21 | 1988-10-31 | Clarion Co Ltd | Radio receiver |
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