JPS5848135U - Receiver automatic scanning circuit - Google Patents
Receiver automatic scanning circuitInfo
- Publication number
- JPS5848135U JPS5848135U JP14345681U JP14345681U JPS5848135U JP S5848135 U JPS5848135 U JP S5848135U JP 14345681 U JP14345681 U JP 14345681U JP 14345681 U JP14345681 U JP 14345681U JP S5848135 U JPS5848135 U JP S5848135U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- smoothing
- automatic scanning
- output
- frequency
- 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
- Noise Elimination (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の自動走査回路を示すブロック図、第２図
乃至第４図は本考案に係る自動走査回路の実施例を示し
、第２図は基本的ブロック図、第３ ”図は原理
説明図、第４図は具体的回路例を示す回路図である。
Ｄ・・・・・・平滑回路、Ｈｌ・・・・・・保持回路、
１・・・・・・判別回路、ＦＣ・・・・・・周波数制御
部。Fig. 1 is a block diagram showing a conventional automatic scanning circuit, Figs. 2 to 4 show embodiments of the automatic scanning circuit according to the present invention, Fig. 2 is a basic block diagram, and Fig. 3 is a basic block diagram. The explanatory diagram and FIG. 4 are circuit diagrams showing specific circuit examples.D...Smoothing circuit, Hl...Holding circuit,
1... Discrimination circuit, FC... Frequency control section.
Claims (1)
止が制御されるようになっている周波数制御部を有する
受信機の自動走査回路に於いて、低周波出力信号を平滑
するための平滑回路と、該平滑回路からの出力レベルを
少許保持するための保持回路と、上記スケルチ信号と上
記保持回路からの出力とを入力とする判別回路とを備え
、該判別回路からの出力が上記周波数制御部に入力され
るようになっており、受信波の電界強度及び変調波のレ
ベルによって周波数走査の開始又は停止が制御されるよ
うに構成されていることを特徴とする受信機の自動走査
回路。In an automatic scanning circuit of a receiver having a frequency control section in which start or stop of frequency scanning is controlled depending on the level of a squelch signal, a smoothing circuit for smoothing a low frequency output signal, and a smoothing circuit for smoothing a low frequency output signal; A holding circuit for holding the output level from the circuit to a certain degree, and a discrimination circuit receiving the squelch signal and the output from the holding circuit as inputs, and the output from the discrimination circuit is input to the frequency control section. 1. An automatic scanning circuit for a receiver, characterized in that the start or stop of frequency scanning is controlled depending on the electric field strength of a received wave and the level of a modulated wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14345681U JPS5848135U (en) | 1981-09-29 | 1981-09-29 | Receiver automatic scanning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14345681U JPS5848135U (en) | 1981-09-29 | 1981-09-29 | Receiver automatic scanning circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5848135U true JPS5848135U (en) | 1983-03-31 |
Family
ID=29936440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14345681U Pending JPS5848135U (en) | 1981-09-29 | 1981-09-29 | Receiver automatic scanning circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5848135U (en) |
-
1981
- 1981-09-29 JP JP14345681U patent/JPS5848135U/en active Pending
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