JPS6438883U - - Google Patents
Info
- Publication number
- JPS6438883U JPS6438883U JP1987132768U JP13276887U JPS6438883U JP S6438883 U JPS6438883 U JP S6438883U JP 1987132768 U JP1987132768 U JP 1987132768U JP 13276887 U JP13276887 U JP 13276887U JP S6438883 U JPS6438883 U JP S6438883U
- Authority
- JP
- Japan
- Prior art keywords
- control
- voltage
- attenuator
- level
- terminal
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案の信号切換回路の一実施例を示
す回路図、第２図は第１図の減衰器の減衰特性を
示す特性図、第３図は従来の信号切換回路を示す
ブロツク図である。
１１，１２……入力端子、１３，１４……減衰
器、１５……出力端子、１６……切換制御回路、
Ｓ１，Ｓ２……入力信号、Ｑ１〜Ｑ３……トラン
ジスタ。
Fig. 1 is a circuit diagram showing an embodiment of the signal switching circuit of the present invention, Fig. 2 is a characteristic diagram showing the attenuation characteristics of the attenuator shown in Fig. 1, and Fig. 3 is a block diagram showing a conventional signal switching circuit. It is. 11, 12...Input terminal, 13, 14...Attenuator, 15...Output terminal, 16...Switching control circuit,
S1 , S2 ...input signals, Q1 to Q3 ...transistors.
Claims (1)
る第１、第２の減衰器を含み、各減衰器の入力端
子にそれぞれ第１、第２の入力信号を供給すると
ともに各制御端子に減衰量を調整するための制御
電圧を供給するようにした信号減衰回路と、 前記第１、第２の減衰器のいずれか一方の制御
端子に選択的に前記制御電圧を供給するための手
段であつて、第１のレベルと第２のレベルとの間
で変化するスイツチ電圧を受け、このスイツチ電
圧が第１のレベルにあるときは前記第１の減衰器
に対して制御電圧を供給し、スイツチ電圧が第２
のレベルにあるときは前記第２の減衰器に対して
制御電圧を供給する切換制御回路とを具備し、 前記スイツチ電圧に応答して前記第１、第２の
減衰器のいずれか一方の出力端子から信号を選択
的に取出すようにしたことを特徴とする信号切換
回路。[Claims for Utility Model Registration] Includes first and second attenuators each having an input terminal, an output terminal, and a control terminal, and supplies first and second input signals to the input terminals of each attenuator, respectively. a signal attenuation circuit configured to supply a control voltage for adjusting an amount of attenuation to each control terminal; and selectively supplying the control voltage to the control terminal of either the first or second attenuator. means for receiving a switch voltage varying between a first level and a second level, and applying a control voltage to the first attenuator when the switch voltage is at the first level; and the switch voltage is the second
a switching control circuit that supplies a control voltage to the second attenuator when the switch voltage is at a level of A signal switching circuit characterized in that signals are selectively extracted from terminals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987132768U JPS6438883U (en) | 1987-08-31 | 1987-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987132768U JPS6438883U (en) | 1987-08-31 | 1987-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6438883U true JPS6438883U (en) | 1989-03-08 |
Family
ID=31390034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987132768U Pending JPS6438883U (en) | 1987-08-31 | 1987-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6438883U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7184162B2 (en) | 1991-03-20 | 2007-02-27 | Eon-Net L.P. | Information processing methodology |
| US7619768B2 (en) | 1991-03-20 | 2009-11-17 | Glory Licensing Llc | Information processing methodology |
-
1987
- 1987-08-31 JP JP1987132768U patent/JPS6438883U/ja active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7184162B2 (en) | 1991-03-20 | 2007-02-27 | Eon-Net L.P. | Information processing methodology |
| US7259887B2 (en) | 1991-03-20 | 2007-08-21 | Eon-Net L.P. | Information processing methodology |
| US7474434B2 (en) | 1991-03-20 | 2009-01-06 | Millennium L.P. | Information processing methodology |
| US7570383B2 (en) | 1991-03-20 | 2009-08-04 | Glory Licensing Llc | Information processing methodology |
| US7619768B2 (en) | 1991-03-20 | 2009-11-17 | Glory Licensing Llc | Information processing methodology |
| US7672007B2 (en) | 1991-03-20 | 2010-03-02 | Glory Licensing Llc | Information processing methodology |
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