JPS6057243U - signal receiving device - Google Patents
signal receiving deviceInfo
- Publication number
- JPS6057243U JPS6057243U JP15003483U JP15003483U JPS6057243U JP S6057243 U JPS6057243 U JP S6057243U JP 15003483 U JP15003483 U JP 15003483U JP 15003483 U JP15003483 U JP 15003483U JP S6057243 U JPS6057243 U JP S6057243U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- pilot signal
- receiving
- pilot
- receiving 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
Landscapes
- Alarm Systems (AREA)
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例を示した回路ブロック図、第
２図は第１図の実施例で用いる信号発信器の実施例を示
した回路ブロック図である。
１：受信盤、２ａ〜２ｎ：信号線、３：信号分離器、４
：テレビアンテナ、５：テレビブースタ、６：同軸ケー
ブル、７：直列ユニット、８：防犯押釦、９：ガスアダ
プター、１２ａ、１２ｂ：警報信号発信器、１３：パイ
ロット信号発生部、１４：チャンネルスキャン部、１５
：中央処理装置（ＣＰＵ）、１６：プリアンプ、１７，
２２：パイロットフィルタ、１８：ＤＣアンテナ、２０
ニドランス、２１ａ〜２１ｎ：識別用フィルタ、２３：
検波器、２４：入出力インタフェース、２５：表示灯群
、２６：警報ブサー、２７：操作スイッチ群、２８：無
極性変換部、２９：電源平滑部、３０：音叉発振子、３
１：発振部、３２：発振増幅部。
ｉ １５ −
て丁１．。。７ ′ 」
一１１４ ・・へ
’−ＴＶ−へ
１９ ２０ ２１ｎ ｌ
−、ＡＣ１００ＶFIG. 1 is a circuit block diagram showing an embodiment of the present invention, and FIG. 2 is a circuit block diagram showing an embodiment of a signal transmitter used in the embodiment of FIG. 1: Receiver board, 2a-2n: Signal line, 3: Signal separator, 4
: TV antenna, 5: TV booster, 6: Coaxial cable, 7: Series unit, 8: Security push button, 9: Gas adapter, 12a, 12b: Alarm signal transmitter, 13: Pilot signal generator, 14: Channel scan unit , 15
:Central processing unit (CPU), 16:Preamplifier, 17,
22: Pilot filter, 18: DC antenna, 20
Nidorance, 21a-21n: Identification filter, 23:
Detector, 24: Input/output interface, 25: Indicator light group, 26: Alarm buzzer, 27: Operation switch group, 28: Non-polar converter, 29: Power supply smoothing section, 30: Tuning fork oscillator, 3
1: Oscillation section, 32: Oscillation amplification section. i 15 - te 1. . . 7'114...to'-TV-to19 20 21n l-, AC100V
Claims (1)
する複数の信号発信器と、該信号発信器から信号線を介
して伝送される発信信号の周波数を識別受信する受信盤
とを備え、該受信盤から前記信号線を介して前記信号発
信器に電源を供給すると共に信号を発信した信号発信器
の数が多くなるに従い前記受信盤への信号入力レベルが
低下する信号受信装置において、 前記信号線にパイロット信号を注入するパイロット信号
発生部を接続し、前記受信盤に前記パイロット信号のレ
ベルを検出し該検出レベルに応じて自動的に受信信号の
増幅度を制御する自動利得制御増幅器及び前記パイロッ
ト信号の有無を検出しパイロット信号が無くなった際に
表示灯を点灯する断線表示部とを設けたことを特徴とす
る信号受信装置。[Claims for Utility Model Registration] A plurality of signal transmitters installed in a terminal and transmitting signals of pre-allocated unique frequencies, and identifying and receiving the frequency of the transmitted signal transmitted from the signal transmitters via a signal line. a receiving board, the receiving board supplies power to the signal transmitter via the signal line, and as the number of signal transmitters that transmit signals increases, the signal input level to the receiving board decreases. In the signal receiving device, a pilot signal generator for injecting a pilot signal is connected to the signal line, the level of the pilot signal is detected in the receiver board, and the amplification degree of the received signal is automatically controlled according to the detected level. 1. A signal receiving device comprising: an automatic gain control amplifier that detects the pilot signal; and a disconnection indicator that detects the presence or absence of the pilot signal and lights up an indicator light when the pilot signal disappears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15003483U JPS6057243U (en) | 1983-09-28 | 1983-09-28 | signal receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15003483U JPS6057243U (en) | 1983-09-28 | 1983-09-28 | signal receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6057243U true JPS6057243U (en) | 1985-04-22 |
Family
ID=30332873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15003483U Pending JPS6057243U (en) | 1983-09-28 | 1983-09-28 | signal receiving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6057243U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5299050A (en) * | 1976-02-17 | 1977-08-19 | Yagi Antenna | Circuit for controlling agc circuit |
| JPS5730429A (en) * | 1980-07-30 | 1982-02-18 | Fujitsu Ltd | Automatic restoration system for automatic level adjuster |
-
1983
- 1983-09-28 JP JP15003483U patent/JPS6057243U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5299050A (en) * | 1976-02-17 | 1977-08-19 | Yagi Antenna | Circuit for controlling agc circuit |
| JPS5730429A (en) * | 1980-07-30 | 1982-02-18 | Fujitsu Ltd | Automatic restoration system for automatic level adjuster |
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