JPS63106288U - - Google Patents
Info
- Publication number
- JPS63106288U JPS63106288U JP19832586U JP19832586U JPS63106288U JP S63106288 U JPS63106288 U JP S63106288U JP 19832586 U JP19832586 U JP 19832586U JP 19832586 U JP19832586 U JP 19832586U JP S63106288 U JPS63106288 U JP S63106288U
- Authority
- JP
- Japan
- Prior art keywords
- connection terminal
- external connection
- signal
- required during
- control signal
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 1
- 230000003321 amplification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Tests Of Electronic Circuits (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Logic Circuits (AREA)
Description
第１図はこの考案に係る信号切換回路の一実施
例を示すブロツク構成図、第２図は同実施例を具
体的にして示す回路構成図、第３図及び第４図は
それぞれ第２図に示す回路の各部の電位関係を示
す図、第５図は従来の信号切換回路を示すブロツ
ク構成図である。
１１……信号源、１２……クロマ増幅回路、１
３……バースト・クロマ増幅回路、１４……検波
回路、１５……集積回路、１６，１７……外部接
続用端子、１８……信号源、１９……クロマ増幅
回路、２０……バースト・クロマ増幅回路、２１
……検波回路、２２……切換回路、２３……集積
回路、２４，２５……外部接続用端子、２６……
可変抵抗器、２７……スイツチ、２８……制御回
路、２９……信号源、３０……定電流源、３１…
…バースト信号源、３２……（Ｂ―Ｙ）信号源、
３３……出力端子。
FIG. 1 is a block configuration diagram showing an embodiment of a signal switching circuit according to this invention, FIG. 2 is a circuit configuration diagram specifically showing the same embodiment, and FIGS. 3 and 4 are respectively shown in FIG. FIG. 5 is a block diagram showing a conventional signal switching circuit. 11... Signal source, 12... Chroma amplifier circuit, 1
3... Burst chroma amplification circuit, 14... Detection circuit, 15... Integrated circuit, 16, 17... External connection terminal, 18... Signal source, 19... Chroma amplification circuit, 20... Burst chroma Amplification circuit, 21
...Detection circuit, 22...Switching circuit, 23...Integrated circuit, 24, 25...External connection terminal, 26...
Variable resistor, 27... switch, 28... control circuit, 29... signal source, 30... constant current source, 31...
...Burst signal source, 32...(B-Y) signal source,
33...Output terminal.
Claims (1)
の大きさに応じて、通常動作時に必要とされる所
定の制御信号を生成する制御信号生成手段と、こ
の制御信号発生手段から通常動作時に必要とされ
る制御信号が発生されている状態で、通常動作時
に必要とされる第１の信号を第２の外部接続用端
子から出力し、前記第１の外部接続用端子に印加
される電圧レベルが所定の基準値になつた状態で
、テスト時に必要とされる第２の信号を前記第２
の外部接続用端子から出力する切換手段とを具備
してなることを特徴とする信号切換回路。 control signal generation means for generating a predetermined control signal required during normal operation according to the magnitude of the voltage level applied to the first external connection terminal; A first signal required during normal operation is output from the second external connection terminal while a control signal is being generated, and the voltage level is applied to the first external connection terminal. has reached a predetermined reference value, the second signal required during the test is sent to the second signal.
1. A signal switching circuit comprising: switching means for outputting from an external connection terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19832586U JPS63106288U (en) | 1986-12-25 | 1986-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19832586U JPS63106288U (en) | 1986-12-25 | 1986-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63106288U true JPS63106288U (en) | 1988-07-09 |
Family
ID=31158907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19832586U Pending JPS63106288U (en) | 1986-12-25 | 1986-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63106288U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5513818A (en) * | 1978-07-14 | 1980-01-31 | Hitachi Ltd | Testing method |
| JPS6126940U (en) * | 1984-07-25 | 1986-02-18 | 株式会社日立ホームテック | Oil heater with refueling notice |
-
1986
- 1986-12-25 JP JP19832586U patent/JPS63106288U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5513818A (en) * | 1978-07-14 | 1980-01-31 | Hitachi Ltd | Testing method |
| JPS6126940U (en) * | 1984-07-25 | 1986-02-18 | 株式会社日立ホームテック | Oil heater with refueling notice |
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