JPS62196930A - Radio communication equipment - Google Patents
Radio communication equipmentInfo
- Publication number
- JPS62196930A JPS62196930A JP3938986A JP3938986A JPS62196930A JP S62196930 A JPS62196930 A JP S62196930A JP 3938986 A JP3938986 A JP 3938986A JP 3938986 A JP3938986 A JP 3938986A JP S62196930 A JPS62196930 A JP S62196930A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- period
- section
- tone
- transmission signal
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 50
- 230000004913 activation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Landscapes
- Noise Elimination (AREA)
- Radio Transmission System (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は単信方式の無線通信装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a simplex wireless communication device.
第３図は従来の単信無線通信装置のブロフク図である。 FIG. 3 is a diagram of a conventional simplex wireless communication device.
図において、■は変調部、２は送信増幅部、３は送信ア
ンテナ、４は受信アンテナ、５は受信部、６は受信音声
スイッチ部、７はスピーカ、８はスケルチ部である。In the figure, ■ is a modulation section, 2 is a transmission amplification section, 3 is a transmission antenna, 4 is a reception antenna, 5 is a reception section, 6 is a reception audio switch section, 7 is a speaker, and 8 is a squelch section.
次に動作について説明する。Next, the operation will be explained.
先ず送信を行なう時は送信機起動入力をオンして、送信
増幅部２をオンする。一方話者の音声は変調入力より入
力され、これが変調部１．送送信幅部２を通って、送信
される。音声で変調がかけられた送信電波は送信アンテ
ナ３．受信アンテナ４を経由して、受信部５に入力され
る。この受信部５の出力はスケルチ部８にてノイズ断が
検出され、スケルチ部８の出力を受けて、受信音声スイ
ッチ部６がオンとなり、スピーカ７に受信音声信号が与
えられる。First, when transmitting, the transmitter start input is turned on, and the transmission amplifier section 2 is turned on. On the other hand, the speaker's voice is input from the modulation input, and this is input to the modulation section 1. The signal is transmitted through the transmission width section 2. The transmitted radio waves modulated by the voice are sent to the transmitting antenna 3. The signal is input to the receiving section 5 via the receiving antenna 4. A squelch section 8 detects a noise break in the output of the receiving section 5, and in response to the output of the squelch section 8, the reception audio switch section 6 is turned on, and the reception audio signal is given to the speaker 7.
また、送信を断とする場合は、送信機起動入力をオフし
て、送信増幅部２をオフとすると、送信電波は断となる
。これによりスケルチ部８にてノイズが検出され、この
出力を受けて受信音声スイッチ部６が断となり、スピー
カ７には音が聞こえなくなる。Further, when the transmission is to be cut off, the transmitter activation input is turned off and the transmission amplifier section 2 is turned off, and the transmission radio wave is cut off. As a result, noise is detected by the squelch section 8, and in response to this output, the receiving audio switch section 6 is turned off, and the speaker 7 cannot hear any sound.
従来の無線通信装置は以上の様に構成されているので、
送信側で電波を断としてから、受信側でスケルチ部が作
動して音声を断とするまでの間、スピーカにはノイズが
聞こえることになり、大変耳ざわりであるという問題点
があった。Conventional wireless communication devices are configured as described above, so
The problem is that noise can be heard through the speaker from the moment the radio waves are cut off on the transmitting side until the squelch section is activated on the receiving side and the sound is cut off, which is very unpleasant to the ears.
この発明は上記の様な問題点を解消するためになされた
もので、送信電波が断となった直後、受信側でノイズが
聞こえることのない無線通信装置を得ることを目的とす
る。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a wireless communication device in which no noise is heard on the receiving side immediately after the transmission radio waves are cut off.
この発明に係る無線通信装置は、送信機側で送信期間を
送信信号期間以上に延長するとともに送信信号期間だけ
送信信号に音声帯域外トーンを重畳し、受信機側ではこ
の音声帯域外トーンの断を検出して音声を断とするよう
にしたものである。In the wireless communication device according to the present invention, the transmitter side extends the transmission period beyond the transmission signal period, and superimposes an out-of-voice band tone on the transmission signal for the transmission signal period, and the receiver side interrupts the out-of-voice band tone. The system detects this and cuts off the audio.
〔作用〕 この発明においては、送信期間を送信信号期間。[Effect] In this invention, the transmission period is referred to as the transmission signal period.
即ち起動入力期間以上に延長してその延長した期間は無
音状態を送信し、受信側では帯域外トーンを検出でき送
信信号期間のみ受信を行なうようにしたから、上記送信
信号期間の直後にも受信側のスピーカからノイズが聞こ
えることはない。In other words, the silence state is transmitted during the extended period beyond the activation input period, and since the receiving side can detect out-of-band tones and receives only during the transmitted signal period, it can also receive data immediately after the above-mentioned transmitted signal period. No noise can be heard from the side speakers.
以下、この発明の一実施例を図について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例による無線通信装置の構成を
示し、図において、１は変調部、２は送信増幅部、３は
送信アンテナ、４は受信アンテナ、５は受信部、６は受
信音声スイッチ部、７はスピーカ、９は送信断遅延スイ
ッチ部、１０は帯域外トーンスイッチ部、１１は帯域外
トーン発生部、１２は帯域外トーン検出部である。FIG. 1 shows the configuration of a wireless communication device according to an embodiment of the present invention. In the figure, 1 is a modulation section, 2 is a transmission amplification section, 3 is a transmission antenna, 4 is a reception antenna, 5 is a reception section, and 6 is a transmission amplification section. 1 is a receiving audio switch section, 7 is a speaker, 9 is a transmission cut-off delay switch section, 10 is an out-of-band tone switch section, 11 is an out-of-band tone generating section, and 12 is an out-of-band tone detecting section.
次に動作を第２図のタイムチャートを用いて説明する。Next, the operation will be explained using the time chart shown in FIG.
送信を開始する場合、送信機起動人力Ａをオンとするこ
とにより、帯域外トーンスイッチ部１゜のスイッチが閉
じて、音声帯域外トーンＢを発生する帯域外トーン発生
部１１よりのトーンが変調部１に接続され、これが音声
変調入力に重畳される。この場合同時に送信増幅部２の
出力Ｃもオンとなり送信電波は送信アンテア３および受
信アンテナ４を経由して受信部５に入力される。この受
信部５の出力が帯域外トーン検出部１２に入力されて、
ここで、帯域外トーンが検出される。これにより受信音
声スイッチ部６が帯域外、トーン検出部１２の出力りに
より駆動され、受信部５の出力がスピーカ７に接続され
る。これにより送信音声が受信側のスピーカ７にて聞こ
える。When starting transmission, by turning on the transmitter starting power A, the switch of the out-of-band tone switch section 1° is closed, and the tone from the out-of-band tone generating section 11 that generates the out-of-band tone B is modulated. 1 and is superimposed on the audio modulation input. In this case, the output C of the transmission amplifier section 2 is also turned on at the same time, and the transmission radio wave is input to the reception section 5 via the transmission antenna 3 and the reception antenna 4. The output of this receiving section 5 is input to the out-of-band tone detecting section 12,
Here, out-of-band tones are detected. As a result, the reception audio switch section 6 is driven by the output of the out-of-band tone detection section 12, and the output of the reception section 5 is connected to the speaker 7. As a result, the transmitted audio can be heard through the speaker 7 on the receiving side.
また、送信を停止する場合、送信機起動人力Ａがオフと
なるが、送信断遅延スイッチ部９により送信起動入力期
間後も一定期間送信電波が送られる。一方布域外トーン
スイソチ部１０のスイッチは送信起動入力期間直後に聞
くことにより、帯域外トーンが上記送信電波に重畳され
なくなる。そしてごの帯域外トーンの断を、受信側の帯
域外トーン検出部１２が検知して、受信音声スイッチ部
６のスイッチを開く。これにより、従来雑音が聞こえて
いた送信信号期間の後受信音声スイッチ部６がオフする
までの期間ｔ１においては無音状態が送信されているた
め雑音は間こえず、その後の送信が停止するまでの期間
ｔ２においては受信音声スイッチ部６がオフとなってい
るため勿論受信音声は聞こえない。Further, when stopping transmission, the transmitter activation manual power A is turned off, but the transmission interruption delay switch section 9 continues to send transmission radio waves for a certain period of time even after the transmission activation input period. On the other hand, by listening to the switch of the out-of-band tone switch section 10 immediately after the transmission activation input period, out-of-band tones are no longer superimposed on the transmission radio wave. Then, the out-of-band tone detection section 12 on the reception side detects the interruption of the out-of-band tone, and opens the switch of the reception audio switch section 6. As a result, during the period t1 from when the reception audio switch unit 6 is turned off after the transmission signal period in which noise was conventionally heard, the noise does not continue because a silent state is being transmitted, and the noise does not continue until the subsequent transmission stops. During the period t2, the received audio switch section 6 is off, so of course the received audio cannot be heard.
以上のようにこの発明にかかる無線通信装置によれば、
送信期間を送信信号期間、即ち起動入力期間以上に延長
してその延長した期間は無音状態を送信し、受信側では
帯域外トーンを検出でき送信信号期間のみ受信を行なう
ようにしたので、上記送信信号期間の直後にも受信側の
スピーカから耳ざわりなノイズが聞こえることはないと
いう効果がある。As described above, according to the wireless communication device according to the present invention,
By extending the transmission period beyond the transmission signal period, that is, the activation input period, and transmitting a silent state during the extended period, the receiving side can detect out-of-band tones and receives only during the transmission signal period. This has the effect that no harsh noise is heard from the receiving side speaker even immediately after the signal period.
【図面の簡単な説明】
第１図はこの発明の一実施例による無線通信装置のブロ
ック図、第２図はその動作を説明するためのタイムチャ
ート図、第３図は従来の通信装置のブロック図である。
図において、１は変調部、２は送信増幅部、３は送信ア
ンテナ、４は受信アンテナ、５は受信部、６は受信音声
スイッチ部、７ばスピーカ、９は送信断遅延スイッチ部
、１０は帯域外トーンスイッチ部、１１は帯域外トーン
発生部、１２は帯域外トーン検出部である。
なお図中同一符号は同−又は相当部分を示す。[Brief Description of the Drawings] Fig. 1 is a block diagram of a wireless communication device according to an embodiment of the present invention, Fig. 2 is a time chart diagram for explaining its operation, and Fig. 3 is a block diagram of a conventional communication device. It is a diagram. In the figure, 1 is a modulation section, 2 is a transmission amplification section, 3 is a transmission antenna, 4 is a reception antenna, 5 is a reception section, 6 is a reception audio switch section, 7 is a speaker, 9 is a transmission cut-off delay switch section, and 10 is a In the out-of-band tone switch section, 11 is an out-of-band tone generation section, and 12 is an out-of-band tone detection section. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
に延長する手段と、上記送信信号のある期間にわたる帯
域外トーンを送信信号に重畳する手段とを備えたもので
あり、 受信機は上記音声帯域外トーンの断を検出し音声パスを
断とする音声帯域外トーン検出手段を備えたものである
ことを特徴とする無線通信装置。(1) A simplex wireless communication device, wherein the transmitter includes means for extending the transmission period beyond a certain period of the transmission signal, and a means for superimposing an out-of-band tone over a certain period of the transmission signal on the transmission signal. 1. A wireless communication device comprising: a means for detecting a tone outside the voice band; and a receiver comprising a tone outside the voice band detecting means for detecting the disconnection of the tone outside the voice band and disconnecting the voice path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3938986A JPS62196930A (en) | 1986-02-25 | 1986-02-25 | Radio communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3938986A JPS62196930A (en) | 1986-02-25 | 1986-02-25 | Radio communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62196930A true JPS62196930A (en) | 1987-08-31 |
Family
ID=12551648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3938986A Pending JPS62196930A (en) | 1986-02-25 | 1986-02-25 | Radio communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62196930A (en) |
-
1986
- 1986-02-25 JP JP3938986A patent/JPS62196930A/en active Pending
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