JPS6029261Y2 - TV audio receiving device - Google Patents
TV audio receiving deviceInfo
- Publication number
- JPS6029261Y2 JPS6029261Y2 JP10072579U JP10072579U JPS6029261Y2 JP S6029261 Y2 JPS6029261 Y2 JP S6029261Y2 JP 10072579 U JP10072579 U JP 10072579U JP 10072579 U JP10072579 U JP 10072579U JP S6029261 Y2 JPS6029261 Y2 JP S6029261Y2
- Authority
- JP
- Japan
- Prior art keywords
- audio
- receiving device
- output
- television
- television set
- 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.)
- Expired
Links
Landscapes
- Television Receiver Circuits (AREA)
Description
【考案の詳細な説明】
本考案は、テレビセットと連動して用いるテレビ音声受
信装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a television audio receiving device used in conjunction with a television set.
従来、テレビセットと連動して用いるテレビ音声受信装
置においては、テレビセットの選局に合わせて選局する
必要があり操作が二重手間となって煩雑であった。Conventionally, in a television audio receiving device used in conjunction with a television set, it is necessary to select a channel in accordance with the channel selection of the television set, making the operation redundant and complicated.
また、テレビセットに適当な制御信号発信器を内蔵させ
、該セットの選局の都度発信される制御信号を受信して
、テレビ音声受信装置の選局を自動的に行わしめる方法
が考えられるが、構成が複雑となるうえ、メーカ間の互
換性にも問題があった。Another possible method is to have a suitable control signal transmitter built into the television set, receive the control signal transmitted each time the set tunes, and automatically tune the television audio receiving device. , the configuration was complicated, and there were also problems with compatibility between manufacturers.
本考案はこれらの点に鑑みなされたものであって、以下
ブロック図に従って説明する。The present invention has been devised in view of these points, and will be described below with reference to block diagrams.
１０は本考案装置であって、−の入力端子１はテレビセ
ット７の音声出力端、例えばイヤホンジャックａに接続
され、他のフロントエンド３への入力端子３ａはアンテ
ナ１１に接続される。Reference numeral 10 denotes a device according to the present invention, in which a negative input terminal 1 is connected to an audio output terminal of a television set 7, for example, an earphone jack a, and an input terminal 3a to another front end 3 is connected to an antenna 11.
フロントエンド３の出力は、中間周波回路４を経て音声
復調回路６に導かれる。The output of the front end 3 is guided to an audio demodulation circuit 6 via an intermediate frequency circuit 4.
放送がステレオ又は二ケ国語放送の場合に対応して、必
要に応じて多重復調回路５が音声復調回路６に含まれ、
その出力はそれぞれ主音声回路８、副音声回路９に接続
され、夫々スピーカ１２，１３を鳴らす。If the broadcast is stereo or bilingual, a multiple demodulation circuit 5 is included in the audio demodulation circuit 6 as necessary,
The outputs thereof are connected to a main audio circuit 8 and a sub audio circuit 9, respectively, and cause speakers 12 and 13 to sound, respectively.
更に、音声復調回路６の出力又は多重復調回路５の主音
声出力すは、前記テレビセット７の音声出力ａと共に比
較回路２に導かれ、比較回路２の出力は、フロントエン
ド３の局部発振制御端子３ｂに接続される。Furthermore, the output of the audio demodulation circuit 6 or the main audio output of the multiplex demodulation circuit 5 is led to the comparison circuit 2 together with the audio output a of the television set 7, and the output of the comparison circuit 2 is used to control the local oscillation of the front end 3. Connected to terminal 3b.
フロントエンド３の局部発振周波数は、制御信号がない
場合は自動的に切換駆動し、制御信号の到来と同時にそ
の発振周波数を保持する如く構成され、比較回路２は例
えば２個の微分回路とアンド・ゲートなどの組合せから
なり、前記二つの音声信号ａ、 ｂが同位相、同波形な
る場合に制御用パルスを出力するように構成される。The local oscillation frequency of the front end 3 is configured to be automatically switched when there is no control signal, and to maintain the oscillation frequency as soon as the control signal arrives, and the comparator circuit 2 includes, for example, two differentiators and an AND - Consists of a combination of gates, etc., and is configured to output a control pulse when the two audio signals a and b have the same phase and the same waveform.
さて、本考案装置１０を受信状態にすると、フロントエ
ンド３の局部発振周波数は自動的に切換えられ、従って
受信チャンネルが自動的に切換えられているとき、テレ
ビセット７を希望する局（受信チャンネル）に合わせた
場合、テレビセット７の音声信号ａと本考案装置１０の
音声復調回路６の出力（多重復調の場合は主音声出力）
ｂが合致（同位相、同波形）したとき、比較回路２から
制御パルスが出力され、該制御パルスによってフロント
エンド３の局部発振周波数が保持される。Now, when the device 10 of the present invention is placed in the receiving state, the local oscillation frequency of the front end 3 is automatically switched, and therefore, when the receiving channel is automatically switched, the television set 7 is set to the desired station (receiving channel). , the audio signal a of the television set 7 and the output of the audio demodulation circuit 6 of the device 10 of the present invention (in the case of multiplex demodulation, the main audio output)
When b match (same phase, same waveform), a control pulse is output from the comparison circuit 2, and the local oscillation frequency of the front end 3 is maintained by the control pulse.
従って、テレビセット７と本考案によるテレビ音声受信
装置１０の受信チャンネルは自動的に一致する。Therefore, the receiving channels of the television set 7 and the television audio receiving device 10 according to the present invention automatically match.
以上の如く本考案構成によれば、テレビ音声受信装置１
０の受信チャンネルが自動的に一致するので、チャンネ
ル合わせの二重手間が不要となリ、極めて使いやすく、
且つ、音声出力端子（イヤホンジャックなど）のあるい
かなるテレビセットにも接続して使用できるので実用上
、甚だ有用である。As described above, according to the configuration of the present invention, the television audio receiving device 1
0 reception channel automatically matches, so there is no need to double tune channel adjustment, and it is extremely easy to use.
Furthermore, it can be used by connecting to any television set that has an audio output terminal (such as an earphone jack), so it is extremely useful in practice.
図は本考案装置を含むブロック図である。
１は入力端、２は比較回路、３はフロントエンド、６は
音声復調回路である。The figure is a block diagram including the device of the present invention. 1 is an input end, 2 is a comparison circuit, 3 is a front end, and 6 is an audio demodulation circuit.
Claims (1)
信号と音声復調回路６の出力とを比較して同相、同波形
のとき出力パルスを出す比較回路２を内蔵し、該出力パ
ルスにてフロントエンド３の受信周波数を制御保持せし
めることを特徴とするテレビ音声受信装置。It has an input terminal 1 that receives an audio signal from a television set, and has a built-in comparison circuit 2 that compares the signal with the output of the audio demodulation circuit 6 and outputs an output pulse when the signal is in phase and has the same waveform. A television audio receiving device characterized by controlling and maintaining a receiving frequency of a front end 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10072579U JPS6029261Y2 (en) | 1979-07-20 | 1979-07-20 | TV audio receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10072579U JPS6029261Y2 (en) | 1979-07-20 | 1979-07-20 | TV audio receiving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5619970U JPS5619970U (en) | 1981-02-21 |
| JPS6029261Y2 true JPS6029261Y2 (en) | 1985-09-04 |
Family
ID=29333437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10072579U Expired JPS6029261Y2 (en) | 1979-07-20 | 1979-07-20 | TV audio receiving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6029261Y2 (en) |
-
1979
- 1979-07-20 JP JP10072579U patent/JPS6029261Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5619970U (en) | 1981-02-21 |
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