JPS62119033U - - Google Patents
Info
- Publication number
- JPS62119033U JPS62119033U JP685886U JP685886U JPS62119033U JP S62119033 U JPS62119033 U JP S62119033U JP 685886 U JP685886 U JP 685886U JP 685886 U JP685886 U JP 685886U JP S62119033 U JPS62119033 U JP S62119033U
- Authority
- JP
- Japan
- Prior art keywords
- filters
- receiver
- receiving
- band switching
- switching function
- 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 2
Landscapes
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は本考案による帯域切換え動作を説明する
ためのフローチヤート、第３図はそのタイミング
チヤート、第４図は従来例を示すブロツク図であ
る。
主要部分の符号の説明、２……高周波増幅回路
、３ａ，３ｂ……帯域切換えスイツチ、４……広
帯域ＩＦフイルタ、５……狭帯域ＩＦフイルタ、
１２……スイツチ駆動回路、１３……ゲート回路
、１４……コントローラ、１５……ミユーテイン
グ回路、２０……ＰＬＬ回路。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a flow chart for explaining the band switching operation according to the present invention, FIG. 3 is a timing chart thereof, and FIG. 4 is a block diagram showing a conventional example. Explanation of symbols of main parts, 2... High frequency amplifier circuit, 3a, 3b... Band switching switch, 4... Wideband IF filter, 5... Narrowband IF filter,
12... Switch drive circuit, 13... Gate circuit, 14... Controller, 15... Muting circuit, 20... PLL circuit.
Claims (1)
波）フイルタを備え、受信状態に応じて前記少な
くとも２つのＩＦフイルタの１つを選択する帯域
切換え機能を有する受信機であつて、所望の局の
受信時に一定の時間間隔で極短時間だけ受信周波
数を変化せしめる手段と、前記受信周波数の変化
時に妨害波が存在するか否かを検出する検出手段
とを備え、前記検出手段の検出出力に基づいて前
記少なくとも２つのＩＦフイルタの１つを選択す
るようになされたことを特徴とする帯域切換え機
能を有する受信機。 A receiver comprising at least two IF (intermediate frequency) filters with different bandwidths and having a band switching function of selecting one of the at least two IF filters depending on the reception condition, when receiving a desired station. comprising means for changing the receiving frequency for a very short time at regular time intervals, and detecting means for detecting whether or not interference waves are present when the receiving frequency changes, and based on the detection output of the detecting means. 1. A receiver having a band switching function, characterized in that one of at least two IF filters is selected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP685886U JPS62119033U (en) | 1986-01-20 | 1986-01-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP685886U JPS62119033U (en) | 1986-01-20 | 1986-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62119033U true JPS62119033U (en) | 1987-07-28 |
Family
ID=30789765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP685886U Pending JPS62119033U (en) | 1986-01-20 | 1986-01-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62119033U (en) |
-
1986
- 1986-01-20 JP JP685886U patent/JPS62119033U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS621441U (en) | ||
| JPS62119033U (en) | ||
| JPH01137627U (en) | ||
| JPS589395Y2 (en) | Stereo/monaural automatic switching device | |
| JPS643343U (en) | ||
| JPS5865698U (en) | tape recorder with radio | |
| JPH0127301Y2 (en) | ||
| JP2572471Y2 (en) | FM stereo receiver | |
| JPH01149138U (en) | ||
| JPS6264042U (en) | ||
| JPS5883844U (en) | FM receiver | |
| JPS6448938U (en) | ||
| JPS59127355U (en) | stereo receiver | |
| JPS60184340U (en) | FM receiver muting control circuit | |
| JPH042147U (en) | ||
| JPS6035654U (en) | squelch circuit | |
| JPH01169835U (en) | ||
| JPS60103945U (en) | AM receiver | |
| JPH0193841U (en) | ||
| JPH0241180U (en) | ||
| JPS60180149U (en) | radio receiver | |
| JPS5864135U (en) | sweep receiver | |
| JPS60111142U (en) | vehicle radio | |
| JPS6454421U (en) | ||
| JPS60181937U (en) | antenna input circuit |