JPH0177041U - - Google Patents
Info
- Publication number
- JPH0177041U JPH0177041U JP1987171336U JP17133687U JPH0177041U JP H0177041 U JPH0177041 U JP H0177041U JP 1987171336 U JP1987171336 U JP 1987171336U JP 17133687 U JP17133687 U JP 17133687U JP H0177041 U JPH0177041 U JP H0177041U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- tone
- audio frequency
- frequency amplifier
- mobile 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
- 230000008030 elimination Effects 0.000 claims 2
- 238000003379 elimination reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Transceivers (AREA)
- Noise Elimination (AREA)
- Mobile Radio Communication Systems (AREA)
Description
第１図は本考案の全体構成を示すブロツク図、
第２図は本考案におけるマイクロコンピユータの
スイツチ制御に係わる動作フローチヤート、第３
図は従来の受信回路のブロツク図である。
１：受信復調回路、２：トーン除去フイルタ、
３：スイツチ、４：スイツチ、５：音声周波増幅
器、６：スピーカ、７：チヤネル切換スイツチ、
８：マイクロコンピユータ、９：メモリ。
Figure 1 is a block diagram showing the overall configuration of the present invention.
Figure 2 is an operation flowchart related to switch control of the microcomputer in the present invention;
The figure is a block diagram of a conventional receiving circuit. 1: Reception demodulation circuit, 2: Tone removal filter,
3: Switch, 4: Switch, 5: Audio frequency amplifier, 6: Speaker, 7: Channel changeover switch,
8: Microcomputer, 9: Memory.
Claims (1)
去フイルタを接続したトーンスケルチ回路を有す
る多チヤンネルの移動無線機受信回路において前
記トーン除去フイルタの出力と音声周波増幅器入
力の間に一つのスイツチをまた前記スイツチとは
反転動作をするもう一つのスイツチを受信復調回
路の出力と音声周波増幅器の入力の間に設けると
ともに、両スイツチを制御する制御回路を備え、
音声信号をトーン除去フイルタを通過または、バ
イパスさせるようにしたことを特徴とする移動無
線機受信回路。 In a multi-channel mobile radio receiver circuit having a tone squelch circuit in which a tone elimination filter is connected between a reception demodulation circuit and an audio frequency amplifier, a switch is provided between the output of the tone elimination filter and the input of the audio frequency amplifier; Another switch with inverse operation is provided between the output of the receiving demodulation circuit and the input of the audio frequency amplifier, and a control circuit is provided to control both switches.
A mobile radio receiving circuit characterized in that a voice signal is caused to pass through or bypass a tone removal filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171336U JPH0177041U (en) | 1987-11-11 | 1987-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171336U JPH0177041U (en) | 1987-11-11 | 1987-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0177041U true JPH0177041U (en) | 1989-05-24 |
Family
ID=31463079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987171336U Pending JPH0177041U (en) | 1987-11-11 | 1987-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0177041U (en) |
-
1987
- 1987-11-11 JP JP1987171336U patent/JPH0177041U/ja active Pending
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