JPS5883844U - FM receiver - Google Patents
FM receiverInfo
- Publication number
- JPS5883844U JPS5883844U JP17826681U JP17826681U JPS5883844U JP S5883844 U JPS5883844 U JP S5883844U JP 17826681 U JP17826681 U JP 17826681U JP 17826681 U JP17826681 U JP 17826681U JP S5883844 U JPS5883844 U JP S5883844U
- Authority
- JP
- Japan
- Prior art keywords
- level
- filter
- received signal
- amplitude
- audio
- 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
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Circuits Of Receivers In General (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図は従来におけるＦＭ受信装置の回路ブロック図、
第２図は本考案の一実施例におけるＦＭ受信装置の回路
ブロック図、第３図ａおよびｂは同装置の作用説明に用
いるための特性図である。
８・・・・・・音声帯域通過フィルタ、８１・・・・・
・位相子担持性を有するフィルタ、８２・・・・・・振
幅平担特性を有するフィルタ、９・・・・・・切換スイ
ッチ回路、１０・・・・・・レベル検出器。FIG. 1 is a circuit block diagram of a conventional FM receiver,
FIG. 2 is a circuit block diagram of an FM receiver according to an embodiment of the present invention, and FIGS. 3a and 3b are characteristic diagrams used to explain the operation of the same device. 8... Audio band pass filter, 81...
- Filter having phaser carrying property, 82... Filter having amplitude flattening characteristic, 9... Changeover switch circuit, 10... Level detector.
Claims (1)
音声信号を得るＦＭ受信装置において、前記音声帯域通
過フィルタを位相子担持性を有するフィルタと振幅平担
特性を有するフィルタとから構成するとともに、前記受
信信号のレベルを監視するレベル検出回路を設け、この
レベル検出回路で検出される受信信号レベルが所定レベ
ルよりも高いとき前記位相子担持性を有するフィルタを
選択使用し、かつ受信信号レベルが所定レベル以下のと
き前記振幅平担特性を有するフィルタを選択使用する構
成としたことを特徴とするＦＭ受信装置。In an FM receiving device that demodulates a received signal and then obtains an audio signal via an audio bandpass filter, the audio bandpass filter is composed of a filter having a phase shifter carrying property and a filter having an amplitude flattening property, and A level detection circuit for monitoring the level of the received signal is provided, and when the received signal level detected by the level detection circuit is higher than a predetermined level, the filter having the phase shifter carrying property is selectively used, and the received signal level is set to a predetermined level. An FM receiving device characterized in that the filter having the amplitude flattening characteristic is selectively used when the amplitude is below the level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17826681U JPS5883844U (en) | 1981-11-30 | 1981-11-30 | FM receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17826681U JPS5883844U (en) | 1981-11-30 | 1981-11-30 | FM receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5883844U true JPS5883844U (en) | 1983-06-07 |
Family
ID=29972902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17826681U Pending JPS5883844U (en) | 1981-11-30 | 1981-11-30 | FM receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5883844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02108313A (en) * | 1988-10-18 | 1990-04-20 | Saburo Okuma | Amplifier with phase correcting circuit |
-
1981
- 1981-11-30 JP JP17826681U patent/JPS5883844U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02108313A (en) * | 1988-10-18 | 1990-04-20 | Saburo Okuma | Amplifier with phase correcting circuit |
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