JPH0365331U - - Google Patents
Info
- Publication number
- JPH0365331U JPH0365331U JP12722889U JP12722889U JPH0365331U JP H0365331 U JPH0365331 U JP H0365331U JP 12722889 U JP12722889 U JP 12722889U JP 12722889 U JP12722889 U JP 12722889U JP H0365331 U JPH0365331 U JP H0365331U
- Authority
- JP
- Japan
- Prior art keywords
- mute
- depth
- miute
- modulation degree
- radio
- 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 7
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Noise Elimination (AREA)
Description
第１図はこの考案の１つの実施例に係る車載Ｆ
Ｍラジオの構成を示すブロツク図、第２図は第１
図中のミユート回路のミユートコントロール特性
を示す線図、第３図は第１図中のマイクロコンピ
ユータの動作を説明するフローチヤート、第４図
は第１図の変形例を示すブロツク図である。第５
図は従来の車載ＦＭラジオの構成を示すブロツク
図、第６図は第５図中のミユート回路のミユート
コントロール特性を示す線図である。
主な符号の説明、１６……ＦＭ検波器、１８Ａ
……ミユート回路、２０……Ｓメータ回路、２２
……ミユート深さ可変回路、２４……マイクロコ
ンピユータ、２６……ＦＭ検波信号レベル検出回
路、３６……変調度検出回路、３８……比較回路
。
Figure 1 shows an in-vehicle F according to one embodiment of this invention.
A block diagram showing the configuration of M radio, Figure 2 is
3 is a flowchart explaining the operation of the microcomputer in FIG. 1, and FIG. 4 is a block diagram showing a modification of FIG. 1. . Fifth
6 is a block diagram showing the configuration of a conventional vehicle-mounted FM radio, and FIG. 6 is a diagram showing the mute control characteristics of the mute circuit in FIG. 5. Explanation of main symbols, 16...FM detector, 18A
...Mute circuit, 20...S meter circuit, 22
... Miyuto depth variable circuit, 24 ... Microcomputer, 26 ... FM detection signal level detection circuit, 36 ... Modulation degree detection circuit, 38 ... Comparison circuit.
Claims (1)
るＦＭ検波信号にソフトミユートを掛けるミユー
ト回路を設けたＦＭラジオにおいて、 外部制御でミユート回路のミユート深さを可変
するミユート深さ可変手段と、 受信放送の変調度を検出する変調度検出手段と
、変調度検出手段での検出出力に基づき、ミユー
ト深さ可変手段に対するミユート深さ可変制御を
行うミユート深さ可変制御手段と、 を装備したことを特徴とする車載ＦＭラジオ。[Claim for Utility Model Registration] In an FM radio equipped with a mute circuit that applies a soft mute to an FM detection signal output from an FM detector based on a field strength signal, a mute depth that varies the mute depth of the mute circuit by external control. a modulation degree detection means for detecting a modulation degree of received broadcasting; and a miute depth variable control means for performing a miute depth variable control on the miute depth variable means based on a detection output of the modulation degree detection means. An in-vehicle FM radio characterized by being equipped with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12722889U JPH0365331U (en) | 1989-10-31 | 1989-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12722889U JPH0365331U (en) | 1989-10-31 | 1989-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0365331U true JPH0365331U (en) | 1991-06-25 |
Family
ID=31674994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12722889U Pending JPH0365331U (en) | 1989-10-31 | 1989-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0365331U (en) |
-
1989
- 1989-10-31 JP JP12722889U patent/JPH0365331U/ja active Pending
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