JPH0461980U - - Google Patents
Info
- Publication number
- JPH0461980U JPH0461980U JP10583390U JP10583390U JPH0461980U JP H0461980 U JPH0461980 U JP H0461980U JP 10583390 U JP10583390 U JP 10583390U JP 10583390 U JP10583390 U JP 10583390U JP H0461980 U JPH0461980 U JP H0461980U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- carrier wave
- audio
- signal
- modulated
- 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
- 230000005236 sound signal Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案の音声多重化信号の自動切換受
信装置の要部の一例構成のブロツク図、第２図は
従来装置の一例構成のブロツク図である。
１……アンテナ、２……チユーナ、３……映像
中間周波回路、４……音声中間周波回路、５……
前記した第１のテレビジヨン放送方式におる放送
波における音声多重化信号のための音声多重復調
回路、６……前記した第２のテレビジヨン放送方
式による放送波における音声多重化信号のための
音声多重復調回路、７，９……切換スイツチ、８
……切換制御信号発生回路。
FIG. 1 is a block diagram of an example of the configuration of a main part of an automatic switching receiver for audio multiplexed signals according to the present invention, and FIG. 2 is a block diagram of an example of the configuration of a conventional device. 1...Antenna, 2...Tuner, 3...Video intermediate frequency circuit, 4...Audio intermediate frequency circuit, 5...
Audio multiplex demodulation circuit for the audio multiplexed signal in the broadcast wave in the first television broadcasting system described above, 6...Sound for the audio multiplexed signal in the broadcast wave in the second television broadcasting system described above. Multiple demodulation circuit, 7, 9...Switch switch, 8
...Switching control signal generation circuit.
Claims (1)
された第１の音声搬送波を０から線周波数までの
周波数帯域を有するアナログ音声信号によつて周
波数変調するとともに、前記した映像搬送波から
予め定められた周波数間隔だけ前記した第１の音
声搬送波よりも多い周波数間隔を有するようにし
て設けられた第２の音声搬送波を、０から線周波
数までの周波数帯域を有するアナログ音声信号と
、線周波数の３．５倍の周波数値の搬送波を周波
数値を異にする２つの低周波信号の内から選択さ
れたの何れか一方の信号によつて振幅変調して得
た振幅被変調波信号とからなる周波数分割多重化
信号によつて周波数変調してなる音声多重化方式
が採用されている第１のテレビジヨン放送方式に
よる放送波と、映像搬送波から所定の周波数間隔
を隔てて配置された音声搬送波をアナログ音声信
号によつて周波数変調するとともに、前記した映
像搬送波から予め定められた周波数間隔だけ前記
した音声搬送波よりも多い周波数間隔を有するよ
うにして設けられた別の音声搬送波を音声信号に
よるデジタルデータによつて変調するようにして
なる音声多重化方式が採用されている第２のテレ
ビジヨン放送方式による放送波とを受信できるよ
うになされている受信装置において、前記した第
２のテレビジヨン放送波の場合に存在するデジタ
ル信号の有無によつて第１、第２のテレビジヨン
放送波を判別する手段と、前記した判別手段の出
力信号によつて受信装置内に設けられている所定
の音声多重回路が自動的に切換え選択されるよう
にする手段とを備えてなる音声多重化信号の自動
切換受信装置。 A first audio carrier wave arranged at a predetermined frequency interval from the video carrier wave is frequency modulated by an analog audio signal having a frequency band from 0 to a line frequency, and a predetermined frequency is modulated from the video carrier wave. A second audio carrier wave provided with a frequency interval greater than that of the first audio carrier wave by the interval is an analog audio signal having a frequency band from 0 to a line frequency, and a line frequency of 3.5 Frequency division multiplexing consisting of an amplitude modulated wave signal obtained by amplitude modulating a carrier wave with a double frequency value by one of two low frequency signals with different frequency values. The first television broadcasting system employs an audio multiplexing system in which the frequency is modulated by a video signal, and the audio carrier wave arranged at a predetermined frequency interval from the video carrier wave is used as an analog audio signal. At the same time, another audio carrier wave provided with a frequency interval larger than that of the audio carrier wave by a predetermined frequency interval from the video carrier wave is modulated by the digital data of the audio signal. In a receiving device that is capable of receiving broadcast waves according to a second television broadcast system in which an audio multiplexing system that modulates sound is adopted, in the case of the second television broadcast wave described above, A means for discriminating between the first and second television broadcast waves depending on the presence or absence of a digital signal, and a predetermined audio multiplexing circuit provided in the receiving device automatically based on the output signal of the discriminating means. and means for automatically switching and selecting an audio multiplexed signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10583390U JPH0461980U (en) | 1990-10-08 | 1990-10-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10583390U JPH0461980U (en) | 1990-10-08 | 1990-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0461980U true JPH0461980U (en) | 1992-05-27 |
Family
ID=31851676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10583390U Pending JPH0461980U (en) | 1990-10-08 | 1990-10-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0461980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015528191A (en) * | 2012-07-23 | 2015-09-24 | グイジョウ ジーゼットジーピーエス カンパニー・リミテッド | General-purpose LED bulb construction method, clamp ring structure LED bulb, and LED lamp |
-
1990
- 1990-10-08 JP JP10583390U patent/JPH0461980U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015528191A (en) * | 2012-07-23 | 2015-09-24 | グイジョウ ジーゼットジーピーエス カンパニー・リミテッド | General-purpose LED bulb construction method, clamp ring structure LED bulb, and LED lamp |
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