JPH01151633U - - Google Patents
Info
- Publication number
- JPH01151633U JPH01151633U JP1988046793U JP4679388U JPH01151633U JP H01151633 U JPH01151633 U JP H01151633U JP 1988046793 U JP1988046793 U JP 1988046793U JP 4679388 U JP4679388 U JP 4679388U JP H01151633 U JPH01151633 U JP H01151633U
- Authority
- JP
- Japan
- Prior art keywords
- channel
- radio waves
- empty
- wave receiving
- receiving circuit
- 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 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Circuits Of Receivers In General (AREA)
Description
第１図は本考案の実施例を示すブロツク図であ
る。
２……空中線、４……電波受信回路、６……判
定回路、４０……チヤンネル選定回路。
FIG. 1 is a block diagram showing an embodiment of the present invention. 2... Antenna, 4... Radio wave receiving circuit, 6... Judgment circuit, 40... Channel selection circuit.
Claims (1)
装置において、受信するテレビジヨン電波の周波
数を順次変化させて前記テレビジヨン電波を受信
しその電界強度に応じた信号を出力する電波受信
回路と、前記電波受信回路からの信号を設定した
基準値と比較して空きチヤンネルか否かを判定す
る判定回路とから構成されたことを特徴とする空
きチヤンネル探知装置。 A device for detecting an empty channel of television radio waves, comprising: a radio wave receiving circuit that sequentially changes the frequency of the received television radio waves to receive the television radio waves and outputs a signal according to the field strength; and the radio wave receiving circuit. 1. An empty channel detection device comprising: a determination circuit that compares a signal from a channel with a set reference value to determine whether or not the channel is empty.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988046793U JPH01151633U (en) | 1988-04-08 | 1988-04-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988046793U JPH01151633U (en) | 1988-04-08 | 1988-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01151633U true JPH01151633U (en) | 1989-10-19 |
Family
ID=31273043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988046793U Pending JPH01151633U (en) | 1988-04-08 | 1988-04-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01151633U (en) |
-
1988
- 1988-04-08 JP JP1988046793U patent/JPH01151633U/ja active Pending
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