JPH0475478U - - Google Patents
Info
- Publication number
- JPH0475478U JPH0475478U JP11822090U JP11822090U JPH0475478U JP H0475478 U JPH0475478 U JP H0475478U JP 11822090 U JP11822090 U JP 11822090U JP 11822090 U JP11822090 U JP 11822090U JP H0475478 U JPH0475478 U JP H0475478U
- Authority
- JP
- Japan
- Prior art keywords
- audio
- jack
- signal
- switching circuit
- outputs
- 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
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000005236 sound signal Effects 0.000 claims 6
- 230000009977 dual effect Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Television Receiver Circuits (AREA)
- Stereophonic Arrangements (AREA)
Description
第１図は本考案の音声切換回路を用いたＣＡＴ
Ｖコンバータの回路構成例を示す図、第２図は従
来のＣＡＴＶコンバータの回路構成例を示す図で
ある。
５……音声切換回路、６……ＭＰＸデコーダ、
６ａ，６ｂ……第１、第２出力端、６ｃ，６ｄ…
…第１、第２制御端、７，８……第１、第２ジヤ
ツク、９……スイツチ、１０……接続回路、１１
……増幅トランジスタ。
Figure 1 shows a CAT using the audio switching circuit of the present invention.
FIG. 2 is a diagram showing an example of the circuit configuration of a V converter. FIG. 2 is a diagram showing an example of the circuit configuration of a conventional CATV converter. 5...Audio switching circuit, 6...MPX decoder,
6a, 6b...first and second output ends, 6c, 6d...
...first and second control ends, 7, 8...first and second jacks, 9...switch, 10...connection circuit, 11
...Amplification transistor.
Claims (1)
時には前記第１出力端にＬチヤンネル音声信号を
出力し、第２出力端にＲチヤンネル音声信号を出
力するとともに、二重音声モード時には前記第１
出力端に主音声信号を出力し、第２出力端に副音
声信号を出力する音声出力回路と、 前記第１出力端に接続された第１ジヤツクと、 前記第２出力端に接続された第２ジヤツクと、 前記第２ジヤツクに一端が接続されるとともに
通常時はＯＮであるが、第２ジヤツクにプラグが
挿入された時はＯＦＦとなるスイツチと、 前記スイツチの他端と第１ジヤツクに接続され
た接続回路と、 ステレオモード時は前記接続回路を信号導通状
態とし、二重音声モード時は信号カツトオフ状態
とする制御手段と から成ることを特徴とする音声切換回路。 (2) 前記接続回路は増幅トランジスタを含み、
該トランジスタのエミツタが前記スイツチに接続
されるとともにベースが制御手段に接続され、且
つコレクタが第１ジヤツクに接続されていること
を特徴とする第１請求項に記載の音声切換回路。 (3) 前記音声出力回路は、音声中間周波信号を
ＦＭ検波した後の音声信号が入力されるマルチプ
レクサ・デコーダであり、このマルチプレクサ・
デコーダは更に前記制御手段の機能を有している
ことを特徴とする第１請求項に記載の音声切換回
路。 (4) ベースバンド復調された映像、音声信号を
分離出力するベースバンド方式のＣＡＴＶコンバ
ータに設けられたことを特徴とする第１請求項に
記載の音声切換回路。[Claims for Utility Model Registration] (1) Has a first and second output terminal, and in stereo mode outputs an L channel audio signal to the first output terminal and outputs an R channel audio signal to the second output terminal. At the same time, in the dual audio mode, the first
an audio output circuit that outputs a main audio signal to an output end and a sub audio signal to a second output end; a first jack connected to the first output end; and a first jack connected to the second output end. 2 jack, a switch whose one end is connected to the second jack and is normally ON but turns OFF when a plug is inserted into the second jack, and the other end of the switch is connected to the first jack. An audio switching circuit comprising: a connected connection circuit; and a control means that brings the connection circuit into a signal conduction state in a stereo mode and into a signal cut-off state in a dual audio mode. (2) the connection circuit includes an amplification transistor;
2. The audio switching circuit according to claim 1, wherein the emitter of the transistor is connected to the switch, the base is connected to the control means, and the collector is connected to the first jack. (3) The audio output circuit is a multiplexer/decoder into which the audio signal after FM detection of the audio intermediate frequency signal is input;
2. The audio switching circuit according to claim 1, wherein the decoder further has the function of said control means. (4) The audio switching circuit according to claim 1, wherein the audio switching circuit is provided in a baseband CATV converter that separates and outputs baseband demodulated video and audio signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11822090U JP2502435Y2 (en) | 1990-11-09 | 1990-11-09 | Voice switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11822090U JP2502435Y2 (en) | 1990-11-09 | 1990-11-09 | Voice switching circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0475478U true JPH0475478U (en) | 1992-07-01 |
| JP2502435Y2 JP2502435Y2 (en) | 1996-06-26 |
Family
ID=31866122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11822090U Expired - Fee Related JP2502435Y2 (en) | 1990-11-09 | 1990-11-09 | Voice switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2502435Y2 (en) |
-
1990
- 1990-11-09 JP JP11822090U patent/JP2502435Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2502435Y2 (en) | 1996-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |