JPH0455833U - - Google Patents
Info
- Publication number
- JPH0455833U JPH0455833U JP9846690U JP9846690U JPH0455833U JP H0455833 U JPH0455833 U JP H0455833U JP 9846690 U JP9846690 U JP 9846690U JP 9846690 U JP9846690 U JP 9846690U JP H0455833 U JPH0455833 U JP H0455833U
- Authority
- JP
- Japan
- Prior art keywords
- tone signal
- signal
- electronic volume
- tone
- generation circuit
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Transmitters (AREA)
Description
第１図は本考案にかかる無線機の一実施例を示
す送信部のブロツク図、第２図はマイク入力信号
のみで送信機に変調をかけて最大周波数偏移に設
定した時の復調波形を示す図、第３図は本実施例
におけるマイク入力信号にトーン信号を加えた時
の復調波形を示す図、第４図は第３図のマイク入
力信号にトーン信号を加えた時の従来例の復調波
形を示す図、第５図は従来の無線機の一例を示す
送信部のブロツク図である。
１……マイクロコンピユータ、２……トーン信
号発生回路、３……マイク、４……振幅制限回路
（ＩＤＣ）、５……合成回路、６……スプラツタ
フイルタ、７……電子ボリウム、８……周波数シ
ンセサイザ、１１……判定手段。
Fig. 1 is a block diagram of a transmitting section showing an embodiment of a radio device according to the present invention, and Fig. 2 shows a demodulated waveform when the transmitter is modulated with only a microphone input signal and set to the maximum frequency deviation. Figure 3 shows the demodulated waveform when a tone signal is added to the microphone input signal in this embodiment, and Figure 4 shows the demodulated waveform of the conventional example when a tone signal is added to the microphone input signal in Figure 3. FIG. 5 is a block diagram of a transmitting section showing an example of a conventional radio device. DESCRIPTION OF SYMBOLS 1... Microcomputer, 2... Tone signal generation circuit, 3... Microphone, 4... Amplitude limiting circuit (IDC), 5... Synthesis circuit, 6... Splatter filter, 7... Electronic volume, 8... ...Frequency synthesizer, 11...determination means.
Claims (1)
制限回路と、この振幅制限された音声信号とトー
ンスケルチシステム用トーン信号発生回路より発
生されるトーン信号を合成する合成回路と、該合
成回路の出力信号に含まれる音声帯域外の成分を
減衰するスプラツタフイルタと、その出力のレベ
ルを調整する電子ボリウムと、該電子ボリウムで
レベル調整された出力信号により変調をかけて送
信信号を作成する周波数シンセサイザと、これら
周波数シンセサイザ、電子ボリウム及びトーン信
号発生回路を制御するマイクロコンピユータを具
備する無線機において、前記トーン信号発生回路
のトーン信号の有無を判定する判定手段を設け、
この判定結果に基づきトーン信号の有無に応じて
前記電子ボリウムの設定レベルを可変するように
したことを特徴とする無線機。 an amplitude limiting circuit that limits the amplitude of an audio input signal from a microphone; a synthesis circuit that synthesizes this amplitude-limited audio signal with a tone signal generated from a tone signal generation circuit for a tone squelch system; and an output signal of the synthesis circuit. A splatter filter that attenuates the included components outside the audio band, an electronic volume that adjusts the level of its output, and a frequency synthesizer that creates a transmission signal by modulating the output signal whose level has been adjusted with the electronic volume. In a radio device equipped with a microcomputer that controls a frequency synthesizer, an electronic volume, and a tone signal generation circuit, a determination means is provided for determining the presence or absence of a tone signal from the tone signal generation circuit,
A radio device characterized in that the set level of the electronic volume is varied depending on the presence or absence of a tone signal based on the determination result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9846690U JPH0455833U (en) | 1990-09-21 | 1990-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9846690U JPH0455833U (en) | 1990-09-21 | 1990-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0455833U true JPH0455833U (en) | 1992-05-13 |
Family
ID=31839671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9846690U Pending JPH0455833U (en) | 1990-09-21 | 1990-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455833U (en) |
-
1990
- 1990-09-21 JP JP9846690U patent/JPH0455833U/ja active Pending
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