JPS6168568U - - Google Patents
Info
- Publication number
- JPS6168568U JPS6168568U JP1984150755U JP15075584U JPS6168568U JP S6168568 U JPS6168568 U JP S6168568U JP 1984150755 U JP1984150755 U JP 1984150755U JP 15075584 U JP15075584 U JP 15075584U JP S6168568 U JPS6168568 U JP S6168568U
- Authority
- JP
- Japan
- Prior art keywords
- contact
- main line
- output signal
- section
- switching
- 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
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Details Of Television Systems (AREA)
Description
第１図はこの考案による共同聴視装置の１実施
例に用いるヘツドアンプのブロツク図、第２図は
同実施例に用いる幹線分岐増幅器のブロツク図、
第３図は従来の共同聴視装置のブロツク図である
。
２８……チヤンネル増幅部、３０……混合部、
３２……スイツチ、３４……切換信号発生部、４
４……幹線増幅部、５４……分岐増幅部、５６…
…分配器、８８……定電圧回路（直流電源部）、
９０……切換スイツチ、９２，９４……接点、９
６……接触子、９８……切換制御部。
Fig. 1 is a block diagram of a head amplifier used in one embodiment of the communal viewing device according to this invention, and Fig. 2 is a block diagram of a main branch amplifier used in the same embodiment.
FIG. 3 is a block diagram of a conventional joint viewing and viewing device. 28...Channel amplification section, 30...Mixing section,
32...Switch, 34...Switching signal generator, 4
4...Main amplifier section, 54...Branch amplifier section, 56...
...Distributor, 88... Constant voltage circuit (DC power supply section),
90...Selector switch, 92, 94...Contact, 9
6...Contactor, 98...Switching control unit.
Claims (1)
れ増幅して混合部に供給する複数のチヤンネル増
幅部と、スイツチが閉成されたとき切換信号を上
記混合部に供給する切換信号発生部と、上記混合
部の出力側に接続された幹線中に介在する幹線増
幅部と、この幹線増幅部の出力信号を分岐して増
幅する分岐増幅部と、分岐増幅部の出力信号を複
数に分配する分配器と、それぞれ値が異なる第１
及び第２の直流電圧を生成する直流電源部と、第
１の直流電圧が第１の接点に第２の直流電圧が第
２の接点にそれぞれ印加され接触子が上記分岐増
幅部の電源端子に接続された切換スイツチと、上
記幹線増幅部の出力信号に上記切換信号が含まれ
ていないとき上記切換スイツチの上記接触子を第
１の接点に接続し、上記幹線増幅部の出力信号に
上記切換信号が含まれているとき上記切換スイツ
チの上記接触子を第２の接点に接続する切換制御
部とを備える共同聴視装置。 a plurality of channel amplifying sections that amplify television signals having different frequency bands and supplying the amplified signals to the mixing section; a switching signal generating section that supplies a switching signal to the mixing section when a switch is closed; A main line amplifying section interposed in the main line connected to the output side, a branch amplifying section that branches and amplifies the output signal of the main line amplifying section, and a distributor that distributes the output signal of the branch amplifying section to a plurality of parts. The first with different values
and a DC power supply unit that generates a second DC voltage, the first DC voltage is applied to the first contact, the second DC voltage is applied to the second contact, and the contact is connected to the power supply terminal of the branch amplifier unit. When the switching signal is not included in the output signal of the connected changeover switch and the main line amplifier, the contact of the changeover switch is connected to the first contact, and the output signal of the main line amplifier is switched to the output signal of the main line amplifier. a switching control unit that connects the contact of the switching switch to a second contact when a signal is included.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984150755U JPH0127323Y2 (en) | 1984-10-04 | 1984-10-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984150755U JPH0127323Y2 (en) | 1984-10-04 | 1984-10-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6168568U true JPS6168568U (en) | 1986-05-10 |
| JPH0127323Y2 JPH0127323Y2 (en) | 1989-08-15 |
Family
ID=30708891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984150755U Expired JPH0127323Y2 (en) | 1984-10-04 | 1984-10-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0127323Y2 (en) |
-
1984
- 1984-10-04 JP JP1984150755U patent/JPH0127323Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0127323Y2 (en) | 1989-08-15 |