JPS628767U - - Google Patents
Info
- Publication number
- JPS628767U JPS628767U JP9887085U JP9887085U JPS628767U JP S628767 U JPS628767 U JP S628767U JP 9887085 U JP9887085 U JP 9887085U JP 9887085 U JP9887085 U JP 9887085U JP S628767 U JPS628767 U JP S628767U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- high frequency
- detecting means
- frequency switch
- switching device
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例に係る高周波信号切
換回路を示す構成図、第２図は従来の高周波信号
切換回路の構成図である。
２……高周波信号切換回路、２１……高周波ス
イツチ、２２……チヤンネル同調回路、２３……
チヤンネル選択スイツチ、２４……検知回路、２
５……高周波スイツチ駆動回路、２６……受信ア
ンテナ、２８……ビデオ機器、３１……テレビジ
ヨン受像機。
FIG. 1 is a block diagram showing a high frequency signal switching circuit according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional high frequency signal switching circuit. 2 ...High frequency signal switching circuit, 21...High frequency switch, 22...Channel tuning circuit, 23...
Channel selection switch, 24...detection circuit, 2
5... High frequency switch drive circuit, 26... Receiving antenna, 28... Video equipment, 31... Television receiver.
Claims (1)
号とビデオ機器のＲＦ出力信号とを高周波スイツ
チにより切換え、いずれか一方の信号をテレビジ
ヨン受像機の入力端子に導く高周波信号切換装置
に於いて、前記ビデオ機器のＲＦ出力信号を検知
する信号検知手段と、この信号検知手段の検知信
号を受けて前記高周波スイツチを前記ビデオ機器
側に切換える高周波スイツチ駆動手段とを具備し
たことを特徴とする高周波信号切換装置。 A high-frequency signal switching device that switches between a received signal from a television broadcast receiving antenna and an RF output signal of a video device using a high-frequency switch, and guides one of the signals to an input terminal of a television receiver. A high frequency signal switching device comprising: a signal detecting means for detecting an RF output signal of the signal detecting means; and a high frequency switch driving means for switching the high frequency switch to the video equipment side in response to the detection signal of the signal detecting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9887085U JPS628767U (en) | 1985-06-28 | 1985-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9887085U JPS628767U (en) | 1985-06-28 | 1985-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS628767U true JPS628767U (en) | 1987-01-20 |
Family
ID=30967226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9887085U Pending JPS628767U (en) | 1985-06-28 | 1985-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS628767U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5157226A (en) * | 1974-11-15 | 1976-05-19 | Hitachi Ltd |
-
1985
- 1985-06-28 JP JP9887085U patent/JPS628767U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5157226A (en) * | 1974-11-15 | 1976-05-19 | Hitachi Ltd |