JPH06120854A - Simplex radio - Google Patents
Simplex radioInfo
- Publication number
- JPH06120854A JPH06120854A JP26639892A JP26639892A JPH06120854A JP H06120854 A JPH06120854 A JP H06120854A JP 26639892 A JP26639892 A JP 26639892A JP 26639892 A JP26639892 A JP 26639892A JP H06120854 A JPH06120854 A JP H06120854A
- Authority
- JP
- Japan
- Prior art keywords
- level
- comparator
- output
- voltage
- reception
- 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.)
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Abstract
(57)【要約】
【目的】 送信と受信の切り替えを音声にて行うシンプ
レックス無線装置に関し、マイクの周辺の騒音及び通話
者の独言にて受信が途切れるのを、自動的に防げるシン
プレックス無線装置の提供を目的とする。
【構成】 スケルチ信号を、所定の電圧と比較する比較
器２に入力し、出力にバイアス電圧３を加えた電圧を、
閾値電圧として入力する比較器４に、送信音声信号をレ
ベル変換器１にて直流レベルに変換した直流信号を入力
し、比較器４の出力を、無線部５への送信，受信を切り
替える切替スイッチ６に入力し、切替スイッチ６を、比
較器４の出力が０レベルの時は受信に、１レベルの時は
送信とする構成とする。
(57) [Abstract] [Purpose] Regarding a simplex wireless device that switches between transmission and reception by voice, a simplex wireless device that can automatically prevent noise around the microphone and interruption of reception due to the talker's own words. For the purpose of provision. [Structure] A squelch signal is input to a comparator 2 that compares it with a predetermined voltage, and a voltage obtained by adding a bias voltage 3 to the output is
A changeover switch for changing the output of the comparator 4 between transmission and reception to the radio section 5 by inputting a DC signal obtained by converting the transmission voice signal into a DC level by the level converter 1 to the comparator 4 which is inputted as a threshold voltage. 6, and the changeover switch 6 is configured to receive when the output of the comparator 4 is 0 level and transmit when the output of the comparator 4 is 1 level.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、送信と受信の切り替え
を音声にて行う、業務用無線装置，アマチュア無線装置
等のシンプレックス無線装置の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of simplex radio equipment such as commercial radio equipment and amateur radio equipment which performs switching between transmission and reception by voice.
【０００２】送信と受信の切り替えを音声にて行うシン
プレックス無線装置では、受信中に、マイクの周辺の騒
音，通話者の独言にて受信が途切れるのを自動的に防げ
るものであることが望まれている。In a simplex radio apparatus for switching between transmission and reception by voice, it is desirable that during reception, noise around the microphone and interruption of reception due to talker talk can be automatically prevented. ing.
【０００３】尚比較器としては、入力電圧と閾値電圧の
接続のしかたにより、入力電圧が閾値電圧より大きいと
き、１レベルを出力するものもあり、０レベルを出力す
るものもある。Some comparators output 1 level and some output 0 level when the input voltage is higher than the threshold voltage, depending on how the input voltage and the threshold voltage are connected.
【０００４】[0004]
【従来の技術】図３は従来例のシンプレックス無線装置
のブロック図である。図３では、マイク７よりの音声信
号は、マイクアンプ８にて増幅され、切替スイッチ６に
入力すると共にレベル変換器１に入力し、レベル変換器
１では、音声信号の平均値を直流とし、比較器４に入力
する。2. Description of the Related Art FIG. 3 is a block diagram of a conventional simplex radio apparatus. In FIG. 3, the audio signal from the microphone 7 is amplified by the microphone amplifier 8 and input to the changeover switch 6 and the level converter 1, and the level converter 1 sets the average value of the audio signal to DC. Input to the comparator 4.
【０００５】比較器４には、スイッチＳＷ１を介して３
段階の、高い，中，低い閾値電圧１４，１５，１６が入
力している。スイッチＳＷ１は通常は実線で示す位置で
一番低い閾値電圧１６を比較器４に与えるようになって
おり、音声がマイク７に入力しない時はレベル変換器１
の出力は０であるので、比較器４の出力は０レベルで、
切替スイッチ６は実線側となっており、受信待ち状態と
なっている。The comparator 4 is connected to the comparator 3 via the switch SW1.
High, medium, and low threshold voltages 14, 15, and 16 of stages are input. The switch SW1 normally applies the lowest threshold voltage 16 to the comparator 4 at the position indicated by the solid line, and when the voice is not input to the microphone 7, the level converter 1
Since the output of is 0, the output of the comparator 4 is 0 level,
The changeover switch 6 is on the solid line side and is in a reception waiting state.
【０００６】相手側のシンプレックス無線装置より信号
が送られてくると、無線部５にて受信し音声信号に復調
され、切替スイッチ６を介して出力し、スピーカアンプ
１２にて増幅され、スピーカ１３より出力される。When a signal is sent from the other side simplex radio device, the radio unit 5 receives it, demodulates it into an audio signal, outputs it through a changeover switch 6, amplifies it by a speaker amplifier 12, and a speaker 13 Will be output.
【０００７】この時、マイク７周辺に騒音があるとか、
通話者が独言を言うと、レベル変換器１の出力レベルが
上がり、一番低い閾値電圧１６より高くなり、比較器４
の出力が１レベルとなる。At this time, there is noise around the microphone 7,
When the caller says aloud, the output level of the level converter 1 rises, becomes higher than the lowest threshold voltage 16, and the comparator 4
Output becomes 1 level.
【０００８】こうなると切替スイッチ６は点線側となり
受信音声が途切れてしまう。そこで、マイク７周辺の騒
音及び通話者の独言でのレベル変換器１の出力レベルよ
り高い、高い閾値電圧１４が入力するようにスイッチＳ
Ｗ１を点線側とする。In this case, the changeover switch 6 is on the dotted line side and the received voice is interrupted. Therefore, the switch S is set so that the noise around the microphone 7 and the high threshold voltage 14 higher than the output level of the level converter 1 in the talker's speech are input.
W1 is on the dotted line side.
【０００９】この儘では、受信が終わり、送信する時
に、レベル変換器１の出力レヘルを、閾値電圧１４以上
にせねばならない為、大きな声を出さねばならないの
で、スイッチＳＷ１を、実線側の低い閾値電圧１６が比
較器４に入力するようにする。[0009] In this case, when reception is completed and transmission is performed, the output reher of the level converter 1 must be raised to a threshold voltage of 14 or higher, and a loud voice must be made. The voltage 16 is input to the comparator 4.
【００１０】この時は、通常のレベルの音声信号を入力
すれば、レベル変換器１にて直流レベルに変換したレベ
ルは、閾値電圧１６より高いので、比較器４の出力は１
レベルとなり、切替スイッチ６を点線側とするので、マ
イクアンプ８にて増幅された音声信号は無線部５を介し
て相手側に送信される。At this time, if an audio signal of a normal level is input, the level converted by the level converter 1 into a DC level is higher than the threshold voltage 16, so the output of the comparator 4 is 1.
Since the level becomes the level and the changeover switch 6 is set to the side of the dotted line, the voice signal amplified by the microphone amplifier 8 is transmitted to the other party via the wireless section 5.
【００１１】勿論、音声の送信が終わると、レベル変換
器１の出力は０となるので、比較器４の出力は０レベル
となり、切替スイッチ６は実線の受信待ちの状態とな
る。Of course, when the transmission of the voice is completed, the output of the level converter 1 becomes 0, the output of the comparator 4 becomes 0 level, and the changeover switch 6 is in the state of waiting for reception of the solid line.
【００１２】[0012]
【発明が解決しようとする課題】しかしながら、受信状
態で、マイク７の周辺の騒音及び通話者の独言にて受信
が途切れないようにするには、音声を送信する時及び受
信する時スイッチＳＷ１を切り替えねばならず、手間が
かかる問題点がある。However, in order to prevent the interruption of the reception due to the noise around the microphone 7 and the talker's utterance in the reception state, the switch SW1 is set at the time of transmitting and receiving the voice. There is a problem in that it has to be changed, which is troublesome.
【００１３】本発明は、マイクの周辺の騒音及び通話者
の独言にて受信が途切れるのを、自動的に防げる、音声
にて送信と受信の切り替を行うシンプレックス無線装置
の提供を目的としている。An object of the present invention is to provide a simplex radio apparatus for automatically switching between voice transmission and reception, which can automatically prevent noise around the microphone and interruption of reception due to a talker's self-intention.
【００１４】[0014]
【課題を解決するための手段】図１は本発明の原理ブロ
ック図である。図１に示す如く、スケルチ信号を、所定
の電圧と比較する第１の比較器２に入力し、出力にバイ
アス電圧３を加えた電圧を、閾値電圧として入力する第
２の比較器４に、送信音声信号をレベル変換器１にて直
流レベルに変換した直流信号を入力し、該第２の比較器
４の出力を、無線部５への送信，受信を切り替える切替
スイッチ６に入力し、該切替スイッチ６を、該第２の比
較器４の出力が０レベルの時は受信に、１レベルの時は
送信とする構成とする。FIG. 1 is a block diagram showing the principle of the present invention. As shown in FIG. 1, a squelch signal is input to a first comparator 2 that compares it with a predetermined voltage, and a voltage obtained by adding a bias voltage 3 to the output is input to a second comparator 4 that is input as a threshold voltage. A DC signal obtained by converting the transmission voice signal into a DC level by the level converter 1 is input, and the output of the second comparator 4 is input to a changeover switch 6 that switches between transmission and reception to the wireless unit 5. The change-over switch 6 is configured to receive when the output of the second comparator 4 is 0 level and transmit when the output of the second comparator 4 is 1 level.
【００１５】[0015]
【作用】本発明によれば、受信状態では、スケルチ信号
のレベルは小さく、比較器２の出力は１レベルで、比較
器４の閾値電圧としては、１レベルに小さい電圧のバイ
アス電圧３が加わった電圧が入力している。According to the present invention, in the receiving state, the level of the squelch signal is small, the output of the comparator 2 is 1 level, and the threshold voltage of the comparator 4 is the bias voltage 3 of a small voltage added to 1 level. The voltage is input.
【００１６】従って、マイクの周辺の騒音及び通話者の
独言がありレベル変換器１より直流レベルが出力されて
も、この直流電圧は、閾値電圧より小さく、比較器４の
出力は０レベルで、切替スイッチ６は点線側の儘の受信
状態を続け、マイクの周辺の騒音及び通話者の独言にて
受信が途切れることはない。Therefore, even if the DC level is output from the level converter 1 due to the noise around the microphone and the talker's utterance, this DC voltage is smaller than the threshold voltage, and the output of the comparator 4 is 0 level. The changeover switch 6 continues the reception state on the side of the dotted line, and the reception is not interrupted by noise around the microphone and the talker's soliloquy.
【００１７】受信が終わると、スケルチ信号は大きくな
るので、比較器２の出力は０レベルとなり、比較器４の
閾値電圧としては、小さい電圧のバイアス電圧３のみと
なるので、通常のレベルの音声信号を入力すると、比較
器４の出力は１レベルとなり、切替スイッチ６は点線側
となり、送信状態となる。When the reception is completed, the squelch signal becomes large, so that the output of the comparator 2 becomes 0 level, and the threshold voltage of the comparator 4 becomes only the bias voltage 3 of a small voltage. When a signal is input, the output of the comparator 4 becomes 1 level, the changeover switch 6 becomes the dotted line side, and the transmission state is set.
【００１８】音声送信が終わると、レベル変換器１の出
力は０となり、バイアス電圧３より小さくなるので、比
較器４の出力は０レベルとなり、切替スイッチ６は実線
側の受信待ち状態となる。When the voice transmission is completed, the output of the level converter 1 becomes 0, which is smaller than the bias voltage 3, so that the output of the comparator 4 becomes 0 level, and the changeover switch 6 is in the reception waiting state on the solid line side.
【００１９】即ち、受信状態で、マイクの周辺の騒音及
び通話者の独言にて受信が途切れるのを自動的に防げる
ようになる。That is, in the reception state, it is possible to automatically prevent the noise around the microphone and the interruption of the reception due to the utterance of the caller.
【００２０】[0020]
【実施例】図２は本発明の実施例のシンプレックス無線
装置のブロック図である。図２で、図３の従来例と異な
る点は、比較器４への閾値電圧として、復調器９にて復
調した出力を増幅するノイズアンプ１０の出力の、スケ
ルチ信号を比較器２に入力し、比較器２の出力にバイア
ス電圧３を加算したものを与えるようにした点であるの
で、この異なる点を中心に以下説明する。2 is a block diagram of a simplex radio apparatus according to an embodiment of the present invention. In FIG. 2, the difference from the conventional example of FIG. 3 is that the squelch signal of the output of the noise amplifier 10 that amplifies the output demodulated by the demodulator 9 is input to the comparator 2 as the threshold voltage to the comparator 4. Since the output of the comparator 2 is added with the bias voltage 3, the different points will be mainly described below.
【００２１】受信状態では、ノイズアンプ１０の出力の
スケルチ信号のレベルは小さいので閾値電圧１１より小
さく、比較器２の出力は１レベルと高い電圧であり、こ
の電圧に小さい電圧のバイアス電圧３を加算したものが
比較器４の閾値電圧として入力しているので、マイク７
周辺の騒音又は通話者の独言が、マイク７に入力し、レ
ベル変換器１にて平均値を直流レベルにしても、上記の
閾値電圧より低く、比較器４の出力レベルは０レベルの
儘であり、マイク７周辺の騒音又は通話者の独言にて受
信が途切れることはなく受信出来る。In the receiving state, the level of the squelch signal output from the noise amplifier 10 is small, so that it is smaller than the threshold voltage 11, and the output of the comparator 2 is a high voltage of 1 level, and a bias voltage 3 of a small voltage is added to this voltage. Since the added value is input as the threshold voltage of the comparator 4, the microphone 7
Even if the surrounding noise or the talker's utterance is input to the microphone 7 and the average value is set to the DC level by the level converter 1, the level is lower than the above threshold voltage, and the output level of the comparator 4 is 0 level. Therefore, the reception can be performed without interruption due to the noise around the microphone 7 or the utterance of the caller.
【００２２】受信が終わると、ノイズアンプ１０の出力
のスケルチ信号のレベルは大きくなり、閾値電圧１１よ
り大きくなるので、比較器２の出力は０レベルとなり、
比較器４の閾値電圧は、小さい電圧のバイアス電圧３の
みとなる。When the reception is completed, the level of the squelch signal output from the noise amplifier 10 becomes larger and becomes larger than the threshold voltage 11, so that the output of the comparator 2 becomes 0 level.
The threshold voltage of the comparator 4 is only the bias voltage 3 having a small voltage.
【００２３】従って、マイク７より通常の音声が入力す
ると、レベル変換器１の出力の直流レベルは閾値電圧以
上となり、比較器４の出力は１レベルとなり、切替スイ
ッチ６は、点線側に切り替わり送信状態となる。Therefore, when a normal voice is input from the microphone 7, the DC level of the output of the level converter 1 becomes higher than the threshold voltage, the output of the comparator 4 becomes 1 level, and the changeover switch 6 is switched to the dotted line side for transmission. It becomes a state.
【００２４】送信が終わると、レベル変換器１の出力の
直流レベルは０となり、バイアス電圧３より小さくなる
ので、比較器４の出力は０レベルとなり、切替スイッチ
６は、実線側となり、受信待ちの状態となる。When the transmission is completed, the DC level of the output of the level converter 1 becomes 0, which is smaller than the bias voltage 3, so that the output of the comparator 4 becomes 0 level, the changeover switch 6 becomes the solid line side, and the reception standby. It becomes the state of.
【００２５】[0025]
【発明の効果】以上詳細に説明せる如く本発明によれ
ば、受信状態で、マイクの周辺の騒音及び通話者の独言
にて受信が途切れるのを自動的に防げる、音声にて送信
と受信の切り替を行うシンプレックス無線装置が得られ
る効果がある。As described above in detail, according to the present invention, it is possible to automatically prevent the noise around the microphone and the interruption of the reception due to the talker's dictation in the reception state. There is an effect that a simplex wireless device that performs switching can be obtained.
【図１】は本発明の原理ブロック図、FIG. 1 is a block diagram of the principle of the present invention,
【図２】は本発明の実施例のシンプレックス無線装置の
ブロック図、FIG. 2 is a block diagram of a simplex wireless device according to an embodiment of the present invention,
【図３】は従来例のシンプレックス無線装置のブロック
図である。FIG. 3 is a block diagram of a conventional simplex wireless device.
１はレベル変換器、２，４は比較器、３はバイアス電
圧、５は無線部、６は切替スイッチ、７はマイク、８は
マイクアンプ、９は復調器、１０はノイズアンプ、１
１，１４，１５，１６は閾値電圧、１２はスピーカアン
プ、１３はスピーカ、ＳＷ１はスイッチを示す。1 is a level converter, 2 and 4 are comparators, 3 is a bias voltage, 5 is a radio section, 6 is a changeover switch, 7 is a microphone, 8 is a microphone amplifier, 9 is a demodulator, 10 is a noise amplifier, 1
1, 14, 15, and 16 are threshold voltages, 12 is a speaker amplifier, 13 is a speaker, and SW1 is a switch.
Claims (1)
第１の比較器（２）に入力し、出力にバイアス電圧
（３）を加えた電圧を、閾値電圧として入力する第２の
比較器（４）に、 送信音声信号をレベル変換器（１）にて直流レベルに変
換した直流信号を入力し、該第２の比較器（４）の出力
を、無線部（５）への送信，受信を切り替える切替スイ
ッチ（６）に入力し、該切替スイッチ（６）を、該第２
の比較器（４）の出力が０レベルの時は受信に、１レベ
ルの時は送信とするようにしたことを特徴とするシンプ
レックス無線装置。1. A second comparator which inputs a squelch signal to a first comparator (2) for comparing with a predetermined voltage and inputs a voltage obtained by adding a bias voltage (3) to the output as a threshold voltage. A DC signal obtained by converting the transmission voice signal into a DC level by the level converter (1) is input to (4), and the output of the second comparator (4) is transmitted to the wireless unit (5). Input to the changeover switch (6) for switching reception, and set the changeover switch (6) to the second
A simplex radio apparatus, wherein when the output of the comparator (4) is 0 level, it is received, and when it is 1 level, it is transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26639892A JPH06120854A (en) | 1992-10-06 | 1992-10-06 | Simplex radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26639892A JPH06120854A (en) | 1992-10-06 | 1992-10-06 | Simplex radio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06120854A true JPH06120854A (en) | 1994-04-28 |
Family
ID=17430381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26639892A Withdrawn JPH06120854A (en) | 1992-10-06 | 1992-10-06 | Simplex radio |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06120854A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014060735A (en) * | 2013-10-17 | 2014-04-03 | Icom Inc | Relay device and communication system |
-
1992
- 1992-10-06 JP JP26639892A patent/JPH06120854A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014060735A (en) * | 2013-10-17 | 2014-04-03 | Icom Inc | Relay device and communication system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000104 |