JPH0339997U - - Google Patents
Info
- Publication number
- JPH0339997U JPH0339997U JP9912689U JP9912689U JPH0339997U JP H0339997 U JPH0339997 U JP H0339997U JP 9912689 U JP9912689 U JP 9912689U JP 9912689 U JP9912689 U JP 9912689U JP H0339997 U JPH0339997 U JP H0339997U
- Authority
- JP
- Japan
- Prior art keywords
- channel
- circuit
- input terminal
- switching
- surround
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
- Stereophonic Arrangements (AREA)
Description
第１図はこの考案に係るサラウンド回路の一実
施例を示す構成図、第２図はサラウンド回路を説
明する構成図、第３図は従来のサラウンド回路を
示す構成図である。
４…差動増幅器、５…位相シフト／音量コント
ロール回路、１１…トランジスタ、１７…コント
ロール信号、１８…音声多重処理回路、１９…入
力切換回路、２０…サラウンド処理回路、２３，
２４…コンデンサ、２５…スイツチ回路、ＴＰ５
，ＴＰ６…外部入力端子、Ｐ１〜Ｐ４…切換入力
端子。
FIG. 1 is a block diagram showing an embodiment of a surround circuit according to this invention, FIG. 2 is a block diagram explaining the surround circuit, and FIG. 3 is a block diagram showing a conventional surround circuit. 4... Differential amplifier, 5... Phase shift/volume control circuit, 11... Transistor, 17... Control signal, 18... Audio multiplex processing circuit, 19... Input switching circuit, 20... Surround processing circuit, 23,
24...Capacitor, 25...Switch circuit, TP 5
, TP6 ...external input terminal, P1 to P4 ...switching input terminal.
Claims (1)
と、 上記多重処理回路からのＬ及びＲチヤンネル信
号が導かれる第１のＬ及びＲチヤンネル切換入力
端子並びに、外部機器からのＬ及びＲチヤンネル
信号が導かれる第２のＬ及びＲチヤンネル切換入
力端子を有する入力切換回路と、 上記入力切換回路からのＬ，Ｒチヤンネル出力
をサラウンド処理するサラウンド処理回路と、 上記第２のＬ及びＲチヤンネル切換入力端子と
それぞれコンデンサを介して接続されるＬ及びＲ
チヤンネル外部入力端子を有すると共に、上記Ｌ
チヤンネル切換入力端子とＲチヤンネル外部入力
端子間を、外部機器のモノラル信号時に接続しス
テレオ信号時に切断する連動スイツチを有する外
部入力手段と、 上記Ｒチヤンネル外部入力端子に現れる信号に
基づいて上記サラウンド処理回路に必要なコント
ロール信号を出力するスイツチ回路とを具備する
ことを特徴とするサラウンド回路。[Claims for Utility Model Registration] An audio multiplex processing circuit that processes TV audio multiplexed signals, a first L and R channel switching input terminal to which L and R channel signals from the multiplex processing circuit are guided, and an external device. an input switching circuit having a second L and R channel switching input terminal to which the L and R channel signals of the input switching circuit are guided; a surround processing circuit that performs surround processing on the L and R channel outputs from the input switching circuit; L and R connected to the L and R channel switching input terminals via capacitors, respectively.
It has a channel external input terminal, and the L
external input means having an interlocking switch that connects between the channel switching input terminal and the R channel external input terminal when a monaural signal from an external device is received and disconnects it when a stereo signal is received; and the surround processing based on the signal appearing at the R channel external input terminal. A surround circuit characterized by comprising a switch circuit that outputs a control signal necessary for the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9912689U JPH0339997U (en) | 1989-08-28 | 1989-08-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9912689U JPH0339997U (en) | 1989-08-28 | 1989-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0339997U true JPH0339997U (en) | 1991-04-17 |
Family
ID=31648187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9912689U Pending JPH0339997U (en) | 1989-08-28 | 1989-08-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0339997U (en) |
-
1989
- 1989-08-28 JP JP9912689U patent/JPH0339997U/ja active Pending
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