JPS628770U - - Google Patents
Info
- Publication number
- JPS628770U JPS628770U JP9035685U JP9035685U JPS628770U JP S628770 U JPS628770 U JP S628770U JP 9035685 U JP9035685 U JP 9035685U JP 9035685 U JP9035685 U JP 9035685U JP S628770 U JPS628770 U JP S628770U
- Authority
- JP
- Japan
- Prior art keywords
- pulse signal
- multivibrator
- audio multiplex
- signal
- television audio
- 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.)
- Granted
Links
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案の（Ｌ―Ｒ）信号復調回路を実
施したテレビ音声多重放送受信器のブロツク図、
第２図は第１図に示す復調回路の動作説明のため
の信号波形図、第３図は米国におけるテレビ音声
多重放送のベースバンドスペクトラムを示す図、
第４図は従来一般のテレビ音声多重放送受信器の
ブロツク図である。
４…同期分離回路、７…音声中間周波検波回路
、１０…（Ｌ―Ｒ）ＡＭ復調器、１７…単安定マ
ルチバイブレータ、１８…２逓倍器。
FIG. 1 is a block diagram of a television audio multiplex broadcast receiver implementing the (LR) signal demodulation circuit of the present invention.
FIG. 2 is a signal waveform diagram for explaining the operation of the demodulation circuit shown in FIG. 1, and FIG. 3 is a diagram showing the baseband spectrum of television audio multiplex broadcasting in the United States.
FIG. 4 is a block diagram of a conventional general television audio multiplex broadcast receiver. 4... Synchronization separation circuit, 7... Audio intermediate frequency detection circuit, 10... (LR) AM demodulator, 17... Monostable multivibrator, 18... Double multiplier.
補正 昭６１．８．６
考案の名称を次のように補正する。
考案の名称 テレビ音声多重放送受信機にお
ける信号復調回路
実用新案登録請求の範囲を次のように補正する
。Amendment August 6, 1981 The name of the invention is amended as follows. Title of the invention: Signal demodulation circuit in a TV audio multiplex broadcast receiver The scope of the claim for utility model registration is amended as follows.
【実用新案登録請求の範囲】
テレビ音声多重放送受信機において、同期分離
回路から得られる水平同期信号にてトリガーされ
デユーテイ比が略５０％のｆＨ（但しｆＨは水平
走査周波数）のパルス信号を生成する単安定マル
チバイブレータと、前記マルチバイブレータより
得られるｆＨパルス信号を２逓倍し２ｆＨのパル
ス信号を生成する２逓倍器と、前記２逓倍器より
得られる２ｆＨパルス信号に基いて音声検波回路
から得られる音声コンポジツト信号中の（Ｌ―Ｒ
）信号をＡＭ復調する（Ｌ―Ｒ）ＡＭ復調器とを
具備してなるテレビ音声多重放送受信機における
信号復調回路。[Claim for Utility Model Registration] In a television audio multiplex broadcast receiver, a pulse signal of fH (where fH is the horizontal scanning frequency) with a duty ratio of approximately 50% is generated triggered by a horizontal synchronization signal obtained from a synchronization separation circuit. a monostable multivibrator that doubles the fH pulse signal obtained from the multivibrator to generate a 2fH pulse signal; (L-R
) A television audio multiplex broadcast receiver comprising a (L-R) AM demodulator for AM demodulating signals.
Signal demodulation circuit.
Claims (1)
回路から得られる水平同期信号にてトリガーされ
デユーテイ比が略５０％のｆＨ（但しｆＨは水平
走査周波数）のパルス信号を生成する単安定マル
チバイブレータと、前記マルチバイブレータより
得られるｆＨパルス信号を２逓倍し２ｆＨのパル
ス信号を生成する２逓倍器と、前記２逓倍器より
得られる２ｆＨパルス信号に基いて音声検波回路
から得られる音声コンポジツト信号中の（Ｌ―Ｒ
）信号をＡＭ復調する（Ｌ―Ｒ）ＡＭ復調器とを
具備してなるテレビ音声多重放送受信機における
（Ｌ―Ｒ）信号復調回路。 In a television audio multiplex broadcast receiver, a monostable multivibrator that is triggered by a horizontal synchronization signal obtained from a synchronization separation circuit and generates a pulse signal of fH (however, fH is a horizontal scanning frequency) with a duty ratio of approximately 50%; A doubler doubles the fH pulse signal obtained from the multivibrator to generate a 2fH pulse signal, and a doubler generates a 2fH pulse signal by doubling the fH pulse signal obtained from the multivibrator. -R
) A (L-R) signal demodulation circuit in a television audio multiplex broadcasting receiver comprising a (L-R) AM demodulator for AM demodulating a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9035685U JPH0328625Y2 (en) | 1985-06-14 | 1985-06-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9035685U JPH0328625Y2 (en) | 1985-06-14 | 1985-06-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS628770U true JPS628770U (en) | 1987-01-20 |
| JPH0328625Y2 JPH0328625Y2 (en) | 1991-06-19 |
Family
ID=30950139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9035685U Expired JPH0328625Y2 (en) | 1985-06-14 | 1985-06-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328625Y2 (en) |
-
1985
- 1985-06-14 JP JP9035685U patent/JPH0328625Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0328625Y2 (en) | 1991-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4321623A (en) | Auxiliary television signal system | |
| JPS628770U (en) | ||
| JPS61206373U (en) | ||
| JPH0747010Y2 (en) | Audio multiplex demodulation circuit | |
| JPS62112228U (en) | ||
| JPH02138972U (en) | ||
| JPH0445344Y2 (en) | ||
| JPS61100084U (en) | ||
| JPH0288375U (en) | ||
| JPS6221676U (en) | ||
| JPS621485U (en) | ||
| JPS63165971U (en) | ||
| JPS6185967U (en) | ||
| JPH01117130U (en) | ||
| JPS60180185U (en) | Multiplex television broadcast receiver | |
| JPS6157722U (en) | ||
| JPH02128489U (en) | ||
| JPH01171181U (en) | ||
| JPS62146337U (en) | ||
| JPS6368263U (en) | ||
| JPS60112152U (en) | tv receiver | |
| JPS63192777U (en) | ||
| JPS63174743U (en) | ||
| JPS6152858U (en) | ||
| JPS6273680U (en) |