JPS60165128A - wireless system - Google Patents
wireless systemInfo
- Publication number
- JPS60165128A JPS60165128A JP59022458A JP2245884A JPS60165128A JP S60165128 A JPS60165128 A JP S60165128A JP 59022458 A JP59022458 A JP 59022458A JP 2245884 A JP2245884 A JP 2245884A JP S60165128 A JPS60165128 A JP S60165128A
- Authority
- JP
- Japan
- Prior art keywords
- section
- voice
- demodulated output
- radio
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、複数の人が同時送受話で通話（会議通話）
を行なう為の無線システムに関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] This invention provides a system for simultaneous transmission and reception of telephone calls by multiple people (conference call).
The present invention relates to a wireless system for carrying out.
従来この種の無線システムとして第１図に示すものがあ
った。A conventional wireless system of this type is shown in FIG.
図において、（１）は中継機、（２）は中継機（１１を
中介として互いに通話を行う無線機（Ｋｌ〜Ｋ１１ｌ）
であり、中継機（１）は受信部（ＲＸＩ 〜ＲＸｎ）
ｆ３１、受信部（３１の復調出力を無線機（２）に送信
する送信機（４）、受信波を各受信機ｆ３１ ＲＸｌ−
ＲＸｎに分配する分配器（５）及び送信波と受信波に分
ける分波器（６）から構成される。In the figure, (1) is a repeater, and (2) is a repeater (radio devices (Kl to K11l) that communicate with each other using 11 as an intermediary).
, and the repeater (1) is a receiving section (RXI to RXn)
f31, a transmitter (4) that transmits the demodulated output of the receiving unit (31 to the radio device (2)), and a received wave to each receiver f31 RXl-
It consists of a distributor (5) that distributes to RXn, and a duplexer (6) that divides into transmitted waves and received waves.
次に従来システムの動作説明を行なう。Next, the operation of the conventional system will be explained.
無線機（２）は同時送受話方式（常時送信と受信を同時
に行っている。）の無線機であり、各無線機Ｋｌ、に２
、 Ｋ３・・・・・・・・・血はそれぞれ異なった送
信周波数ｆｌ 、 ｆｚ・・・・・・・・・ｆｎで送信
し共通の受信周波数ｆｏで受信を行なっている。各無線
機（２）より送信された電波（ｆｌ・・・・・・ｆｎ）
は、中継機［１１の分波器（６）及び分配器（５）を通
った後それぞれの周波数に合った受信部（３）（ＲＸＩ
、 ＲＸ２・・・・・・ＲＸｎ ）により受信されそ
の復調出力は合成され送信部（４）で変調され、周波数
ｆＯで送信される。その電波を各無線機（２）で受信す
る事により各無線機（２）間で通話が出来る。The radio (2) is a simultaneous transmitting/receiving method (always transmitting and receiving at the same time), and each radio Kl has 2
, K3...Blood are transmitted at different transmission frequencies fl, fz...Fn, and received at a common reception frequency fo. Radio waves (fl...fn) transmitted from each radio device (2)
After passing through the duplexer (6) and distributor (5) of the repeater [11], the receiving section (3) (RXI
, RX2 . By receiving the radio waves at each radio device (2), a call can be made between each radio device (2).
従来のシステムでは、以上のように構成されているので
、無線機（２）の数が増加し、それ（二伴ない受信部（
３）が増加すると、各受信部（３）で発生する雑音がた
され送信部（４）に送り込む信号のＳハが悪くなり無線
機（２）で受信した時のＳ／Ｎが悪く聞きづらく通話出
来ないなどの欠点があった。又、その為に通話出来る無
線機の台数が限られていた。In the conventional system, which is configured as described above, the number of radio devices (2) increases, and the number of radio devices (2) increases.
When 3) increases, the noise generated in each receiving section (3) is suppressed, and the S of the signal sent to the transmitting section (4) deteriorates, making it difficult to hear the S/N when received by the radio (2). There were drawbacks such as not being able to make calls. Additionally, the number of wireless devices that could be used to make calls was limited.
本発明は上記のような従来システムの欠点を除去するた
めになされたもので、各受信部（３）にそれぞれスイッ
チ回路（７）と音声検出部（８）を設けることにより、
実際に通話が行われている周波数の受信部（３）の復調
出力のみを送信部（４）に送り込み通話が行われていな
い周波数の受信部（３）の復調出力は送信部（４）に送
り込まない様にし通話のＳ／Ｎをよくすることを目的と
している。The present invention was made to eliminate the drawbacks of the conventional system as described above, and by providing each receiving section (3) with a switch circuit (7) and a voice detecting section (8),
Only the demodulated output of the receiver (3) on the frequency where the call is actually being made is sent to the transmitter (4), and the demodulated output of the receiver (3) on the frequency where the call is not being made is sent to the transmitter (4). The purpose is to improve the signal-to-noise ratio of calls by preventing transmission of signals.
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２図において、第１図と同一符号のものは、同−機能
又は相当品を示す。（７）は受信部（３）の復調出力を
オン、オフするスイッチング回路部、（８）は受信部（
３）の復調出力に音声信号がある時それを検出しスイッ
チング回路部（７）をオンする音声検出部である。In FIG. 2, the same reference numerals as in FIG. 1 indicate the same functions or equivalent products. (7) is a switching circuit section that turns on and off the demodulated output of the receiving section (3); (8) is a switching circuit section that turns on and off the demodulated output of the receiving section (3);
When there is an audio signal in the demodulated output of step 3), the audio detection section detects it and turns on the switching circuit section (7).
次に動作について説明する。Next, the operation will be explained.
従来システム同様、各無線機（２１より周波数ｆｌ・・
・ｆｎで送信を行っており、それぞれの周波数に合った
受信部（３）により受信しているが、今冬無線機（２）
において何も話していないとすると受信部（３１の復調
出力には音声がなく音声検出部（８）は動作せず（−ス
イッチ回路部（７）はオフとなシ送信部＋４１に送シ込
まれる信号はなく、送信電波ｆＯは無変調で無線機１２
；の受信出力は何も出て来ない。As with the conventional system, each radio (frequency fl...
・It is transmitting on fn, and is received by the receiving section (3) that matches each frequency, but this winter the radio device (2)
Assuming that no one is speaking, there is no sound in the demodulated output of the receiving section (31), and the voice detecting section (8) does not operate (- the switch circuit section (7) is turned off). There is no signal transmitted, and the transmitted radio wave fO is unmodulated and is transmitted to radio device 12.
;'s reception output does not produce anything.
次に無線機（２）の内に１を使用している人が話したと
すると、それを受信している受信部（３）のＲＸｔの復
調出力に音声が出るのでそれを音声検出部（８１が検波
しスイッチ回路部（７）をオンとし送信部（４）に、そ
の復調出力が送り込まれ他からの復調出力はないので、
受信部（３）のＲＸＩの復調出力のみが送信部（４１で
変調され送信電波ｆＯで送出される。その電波な各無線
機（２１で受信し、無線機（２１０に１を使用した人の
話しが聞く事が出来、他の無線機ｔ２１ Ｋ２・・・・
・・血からの雑音及び受信部（３）のＲＸ２・・・・・
・・・・ＲＸｎで発生する雑音は聞こえない。Next, if the person using 1 of the radios (2) speaks, a voice will be output from the demodulated output of RXt of the receiver (3) that is receiving the voice, and the voice will be detected by the voice detector ( 81 detects and turns on the switch circuit section (7), and the demodulated output is sent to the transmitting section (4), and there is no demodulated output from other sources, so
Only the demodulated output of the RXI of the receiver (3) is modulated by the transmitter (41) and sent out as a transmission radio wave fO. I can hear the other radios T21 K2...
...Noise from blood and RX2 of receiving section (3)...
...Noise generated by RXn cannot be heard.
なお、上記実施例では、（８）を音声検出部としたが、
（８）は音声に限らず音又は信号でもよい。In addition, in the above embodiment, (8) was used as the voice detection section, but
(8) is not limited to voice, but may also be a sound or a signal.
以上のようにこの発明は、中継機の各受信部に音声検出
部を設け、音声がある時のみ受信出力を送信部に送る事
にした為、不必要な受信部からの雑音を除去出来５ＡＶ
ｌの良い通話が出来る効果があり、又この事により無線
機が何台増加しても通話が出来る様になる効果がある。As described above, this invention provides a voice detection section in each reception section of the repeater, and sends the reception output to the transmission section only when there is voice, making it possible to remove unnecessary noise from the reception section.
This has the effect of making it possible to make calls with good quality, and this also has the effect of making it possible to make calls no matter how many radios are added.
第１図は従来の無線システムを示すシステム系統図、第
２図はこの発明の一実施例による無線システムを示すシ
ステム系統図である。
（１）・・・中継機、（２）・・・無線機、（３１・・
・受信部、（４）・・・送信部、１５１・・・分配器、
（６）・・・分波器、（７）・・・スイッチ回路部、（
８）・・・音声検出部。
なお、図中同一符号は同−又は相当部分を示す。
代理人 大岩増雄
第１図
第２図
特許庁長官殿
ｌ、事件の表示 特願昭５９−２２４５８号２、発明の
名称
無線システム
３、補正をする者
代表者片山仁へ部
５、 補正の対象
１１１明細書の発明の詳細な説明の欄
６、 補正の内容FIG. 1 is a system diagram showing a conventional wireless system, and FIG. 2 is a system diagram showing a wireless system according to an embodiment of the present invention. (1)...Repeater, (2)...Radio device, (31...
- Receiving section, (4)... Transmitting section, 151... Distributor,
(6)... Duplexer, (7)... Switch circuit section, (
8)...Audio detection section. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent: Masuo Oiwa Figure 1 Figure 2: Mr. Commissioner of the Japan Patent Office l, Indication of the case: Japanese Patent Application No. 59-22458 2, Title of the invention: Radio system 3, To the person making the amendment: Representative: Hitoshi Katayama Part 5: Subject of the amendment Column 6 of Detailed Description of the Invention in the Specification No. 111, Contents of Amendment
Claims (1)
この通話を行なう為の中継機から構成される無線システ
ムに於いて、前記無線機はそれぞれ異なる送信周波数と
共通の受信周波数を持ち、前記中継機はそれぞれの送信
周波数に対応した受信部と、その各受信部の復調出力を
ミックスして送信する送信部、及び各受信部の復調出力
に音声がある時のみその復調出力を送信部に送る様にす
る音声検出部とスイッチ回路部から構成されている事を
特徴とする無線システム。A simultaneous transmitting and receiving type radio device that allows multiple people to talk to each other,
In a wireless system composed of repeaters for making calls, each of the radios has a different transmitting frequency and a common receiving frequency, and the repeater has a receiving section corresponding to each transmitting frequency, and a receiving section corresponding to each transmitting frequency. It consists of a transmitting section that mixes and transmits the demodulated outputs of each receiving section, and a voice detecting section and a switch circuit section that sends the demodulated output to the transmitting section only when there is sound in the demodulated output of each receiving section. A wireless system characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59022458A JPS60165128A (en) | 1984-02-07 | 1984-02-07 | wireless system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59022458A JPS60165128A (en) | 1984-02-07 | 1984-02-07 | wireless system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60165128A true JPS60165128A (en) | 1985-08-28 |
Family
ID=12083264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59022458A Pending JPS60165128A (en) | 1984-02-07 | 1984-02-07 | wireless system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60165128A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62136A (en) * | 1985-06-26 | 1987-01-06 | Iwatsu Electric Co Ltd | Radio paging communication system |
| JPS62133452U (en) * | 1986-02-17 | 1987-08-22 |
-
1984
- 1984-02-07 JP JP59022458A patent/JPS60165128A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62136A (en) * | 1985-06-26 | 1987-01-06 | Iwatsu Electric Co Ltd | Radio paging communication system |
| JPS62133452U (en) * | 1986-02-17 | 1987-08-22 |
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