JPH0212790U - - Google Patents
Info
- Publication number
- JPH0212790U JPH0212790U JP1988090771U JP9077188U JPH0212790U JP H0212790 U JPH0212790 U JP H0212790U JP 1988090771 U JP1988090771 U JP 1988090771U JP 9077188 U JP9077188 U JP 9077188U JP H0212790 U JPH0212790 U JP H0212790U
- Authority
- JP
- Japan
- Prior art keywords
- vtr
- circuit
- channel
- output
- configuration
- 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
Description
第１図は本考案の一実施例のＶＴＲシステムの
ブロツク図、第２図はチヤンネル選局回路の構成
例、第３図はチヤンネル判定回路の構成例であり
、第４図は分配器の構成例である。第５図は他の
実施例のＶＴＲシステムのブロツク図、第６図は
映像判定回路の構成例、第７図は従来のＶＴＲシ
ステムのブロツク図、第８図はＴＶ／ＶＴＲ切換
スイツチの構成例、第９図はＶＴＲ出力２５と基
準電源２４の関係を示している。
１……アンテナ、２……分配器、３……ＴＶ、
４……ＶＴＲ、５……チヤンネル選局回路、６…
…チヤンネル判定回路、７……プルダウン抵抗、
８……チヤンネルＳＷ、９……電源、１０……プ
ルアツプ抵抗、１１……チヤンネル出力、１２…
…チヤンネル入力、１３……イクスルーシブ回路
、１４……ＮＡＮＤ回路、１５……コントロール
出力、１６……アンテナ入力、１７……ＶＴＲ入
力、１８……コントロール入力、１９……アンテ
ナＳＷ、２０……ＶＴＲ ＳＷ、２１……インバ
ータ回路、２２……ＴＶ出力、２３……映像判定
回路、２４……基準電源、２５……ＶＴＲ出力、
２６……コンパレータ、２７……ラツチ回路、２
８……ＴＶ／ＶＴＲ切換ＳＷ、２９……ビデオシ
ステム、３０……プルアツプＳＷ、３１……プル
ダウンＳＷ。
FIG. 1 is a block diagram of a VTR system according to an embodiment of the present invention, FIG. 2 is an example of the configuration of a channel selection circuit, FIG. 3 is an example of the configuration of a channel determination circuit, and FIG. 4 is a configuration of a distributor. This is an example. FIG. 5 is a block diagram of a VTR system according to another embodiment, FIG. 6 is a configuration example of a video judgment circuit, FIG. 7 is a block diagram of a conventional VTR system, and FIG. 8 is a configuration example of a TV/VTR changeover switch. , FIG. 9 shows the relationship between the VTR output 25 and the reference power supply 24. 1...Antenna, 2...Distributor, 3...TV,
4...VTR, 5...Channel selection circuit, 6...
...Channel judgment circuit, 7...Pull-down resistor,
8...Channel SW, 9...Power supply, 10...Pull-up resistor, 11...Channel output, 12...
... Channel input, 13 ... Exclusive circuit, 14 ... NAND circuit, 15 ... Control output, 16 ... Antenna input, 17 ... VTR input, 18 ... Control input, 19 ... Antenna SW, 20 ... VTR SW, 21... Inverter circuit, 22... TV output, 23... Video judgment circuit, 24... Reference power supply, 25... VTR output,
26... Comparator, 27... Latch circuit, 2
8...TV/VTR switching SW, 29...Video system, 30...Pull-up SW, 31...Pull-down SW.
Claims (1)
いて分配器の切換スイツチの制御を行なう判定回
路を付加したことを特徴とするＶＴＲシステム。 1. A VTR system in which a TV and a VTR are connected, in which a determination circuit for controlling a switch of a distributor is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988090771U JPH0212790U (en) | 1988-07-07 | 1988-07-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988090771U JPH0212790U (en) | 1988-07-07 | 1988-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0212790U true JPH0212790U (en) | 1990-01-26 |
Family
ID=31315283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988090771U Pending JPH0212790U (en) | 1988-07-07 | 1988-07-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0212790U (en) |
-
1988
- 1988-07-07 JP JP1988090771U patent/JPH0212790U/ja active Pending
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