JPS63318852A - Voice conference equipment - Google Patents
Voice conference equipmentInfo
- Publication number
- JPS63318852A JPS63318852A JP15348887A JP15348887A JPS63318852A JP S63318852 A JPS63318852 A JP S63318852A JP 15348887 A JP15348887 A JP 15348887A JP 15348887 A JP15348887 A JP 15348887A JP S63318852 A JPS63318852 A JP S63318852A
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- JP
- Japan
- Prior art keywords
- line
- conference
- transmission
- audio
- 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.)
- Granted
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- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 28
- 238000004891 communication Methods 0.000 claims description 17
- 230000008878 coupling Effects 0.000 description 11
- 238000010168 coupling process Methods 0.000 description 11
- 238000005859 coupling reaction Methods 0.000 description 11
- 238000003780 insertion Methods 0.000 description 8
- 230000037431 insertion Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、高品質な会議通話を実現するため、アナロ
グ電話回線−回線を用いて会議通話を行うかわりに、ア
ナログ加入者線二回線を用いて拡声通話を行い側音結合
の影響を排除するとともに、上記二回線会議通話を実現
するため該二回線のスピーカ受信系とマイクロホン送信
系からなる拡声装置を自、動的に相互接続可能ならしめ
る拡声会議装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] In order to realize high-quality conference calls, the present invention uses two analog subscriber lines instead of making conference calls using two analog telephone lines. If it is possible to automatically and dynamically interconnect the public address system consisting of the speaker receiving system and the microphone transmitting system of the two lines in order to perform the amplified call using the system and eliminate the effects of sidetone coupling, and to realize the above two line conference call. The present invention relates to a public address conference system.
従来、マイクロホン・スピーカを用いて通話を行う音声
会議においては、第４図に示すような構成の拡声電話機
を用い、アナログ電話線を一回線用いて通話を行うか、
第５図に示すように構成された音声会議装置により専用
線などによる送・受信４線を用いて会議通話を実現して
いた。Conventionally, in audio conferences in which calls are made using microphones and speakers, calls are made using a loudspeaker telephone with the configuration shown in Figure 4 and a single analog telephone line;
A conference call was realized using an audio conference device configured as shown in FIG. 5 using four lines for transmission and reception, such as a dedicated line.
これらの図において、１はマイクロホン、２はマイクロ
ホン用の増幅器、３は音声スイッチ回路で、音声挿入損
失回路３１．３２、音声スイッチ損失制御回路３３とか
らなる。４は防側音回路、５はＰＢ信号発生回路、６は
スピーカ用の増幅器、７はスピーカ、８は電話回線接続
端子、９は送信線接続端子、１０は受信線接続端子であ
る。In these figures, 1 is a microphone, 2 is an amplifier for the microphone, and 3 is an audio switch circuit, which includes audio insertion loss circuits 31 and 32 and an audio switch loss control circuit 33. 4 is a side sound protection circuit, 5 is a PB signal generation circuit, 6 is an amplifier for a speaker, 7 is a speaker, 8 is a telephone line connection terminal, 9 is a transmission line connection terminal, and 10 is a reception line connection terminal.
その動作は音声スイッチ損失制御回路３３がマイクロホ
ン１からの送話人力信号と、電話回線接続端子８あるい
は受信線接続端子１０からの受話人力信号との大小を比
較したのち、いずれかレベルの大きい方の音声挿入損失
回路３１または３２をＯｄＢ、他方をＬｄＢに制御する
ことで会議通話を実現している。The operation is performed after the voice switch loss control circuit 33 compares the transmitting human power signal from the microphone 1 with the receiving human power signal from the telephone line connection terminal 8 or the receiving line connection terminal 10, whichever has the greater level. A conference call is realized by controlling one of the audio insertion loss circuits 31 or 32 to OdB and the other to LdB.
従来のアナログ−回線時に達成される拡声電話機や音声
会議装置の側音結合量は接続される回線の状況により大
きく変動し、その変化量は２０ｄＢにも達する。このた
め、このときのエコー・ハウリング抑圧に用いられる音
声スイッチ挿入損失量は、音響結合を含め５０〜３０ｄ
Ｂにもなっている。しかし、アナログ公衆電話回線二回
線を用い、送信・受信線を電気的に分離して相互に接続
し側音結合の問題を排除すれば、互いの会議装置の音響
結合のみで挿入損失量は決定されるため、この挿入損失
量を１０ｄＢ以下にまで少なくすることが可能となり、
高品質な会議通話を実現できることとなる。しかし、ア
ナログ公衆電話回線を二回線用いて送受信通話を行う場
合、二回線の何れを送信に他方を受信にするかを、相手
会議装置と合意の上で行う必要がある。すなわち、二回
線会議ボタン押下後の一回線音声通信会議モードへの移
行時に、音声会議装置間で自らの送信側が相手側送信線
に、また自らの受信側が相手の受信側に接続されること
なく自らの送信は相手の受信に、また自らの受信は相手
の送信にと、一方の公衆電話回線を送信専用、他方の公
衆電話回線を受信専用として正しく接続する必要があり
、このため操作者等が介在する必要があり、かつ何れを
送信・受信とするか取り決めも必要になり煩わしい限り
である。The amount of sidetone coupling achieved by conventional analog telephones and audio conference equipment varies greatly depending on the conditions of the connected line, and the amount of variation reaches as much as 20 dB. Therefore, the audio switch insertion loss amount used for echo/howling suppression at this time is 50 to 30 d, including acoustic coupling.
It is also B. However, if you use two analog public telephone lines and eliminate the problem of sidetone coupling by electrically separating the transmitting and receiving lines and connecting them together, the amount of insertion loss can be determined only by the acoustic coupling of the conference equipment. Therefore, it is possible to reduce this insertion loss to 10dB or less,
This enables high-quality conference calls. However, when transmitting and receiving calls using two analog public telephone lines, it is necessary to agree with the other party's conference device which of the two lines will be used for transmission and the other for reception. In other words, when transitioning to single-line audio communication conference mode after pressing the two-line conference button, the transmitting side of the audio conference device is connected to the other party's transmission line, and the receiving side of the audio conference is not connected to the other party's receiving side. In order for one's own transmissions to be received by the other party, and one's own reception to be transmitted by the other party, it is necessary to properly connect one public telephone line for sending and the other for receiving. There is a need for someone to intervene, and it is also necessary to decide which should be sent and which should be received, which is very troublesome.
このように第４図の拡声電話機の場合、スピーカ・マイ
クロホンの音響結合路と自らの電話機内で生じる側音路
による一巡パスを断ちハウリングを防止するため音声ス
イッチ回路３を用いている。このため第１の欠点は、こ
の音声スイッチ回路３による大きい損失量を送話または
受話の通話路に挿入する必要から、通話音声が切断され
易いという問題を生じることである。As described above, in the case of the loudspeaker telephone shown in FIG. 4, the audio switch circuit 3 is used to prevent howling by cutting off the round-trip path between the speaker-microphone acoustic coupling path and the side sound path generated within the telephone itself. Therefore, the first drawback is that a large amount of loss due to the voice switch circuit 3 needs to be inserted into the communication path for sending or receiving calls, resulting in the problem that the call voice is likely to be disconnected.
第２の欠点は、側音路の問題から解放される第５図の音
声会議装置においては、伝送路の損失量・変動ともに小
さいため比較的高性能な通話を実現できるが、専用線そ
のものを簡便に準備することは困難であり、回線業者の
手を煩わせることとなり、また何処でも利用できる程に
は専用線は普及していない欠点がある。The second drawback is that the audio conference device shown in Figure 5, which is free from side channel problems, can achieve relatively high-performance calls because the loss and fluctuations in the transmission path are small. It is difficult to prepare easily and requires a lot of work for line carriers, and leased lines have the disadvantage that they are not widespread enough to be used anywhere.
また、ファクシミリに代表されるような外部機器を用い
たシステムでも回線に信号を送出しているが、これらは
−回線を用いているのみで、装置が送信なのか受信なの
かを判断するのみである。Additionally, systems that use external equipment, such as facsimiles, also send signals over the line, but these only use the line, and the device only determines whether it is transmitting or receiving. be.
この発明の目的は、広く普及しているアナログ公衆電話
回線を二回線用い側音結合路の影響を排除し、専用線を
二回線用いたのと等価な構成とすることで、高品質な拡
声通話を簡単に実現・提供することにある。The purpose of this invention is to provide high-quality sound amplification by using two widely used analog public telephone lines, eliminating the influence of side-tone coupling paths, and creating a configuration equivalent to using two dedicated lines. The aim is to easily realize and provide telephone calls.
この発明にかかる音声会議装置は、マイクロホン系・ス
ピーカ系および音声スイッチから構成されアナログ公衆
電話回線を二回線用い、この二回線の一方を音声会議通
信の送信線・他方を受信線とする一回線音声通信会議モ
ードを実現する音声会議装置において、一回線毎に発・
着信動作を行い各々双方向通話路を成立した後、一回線
音声通信会議モードへの移行を二回線会議ボタン押下直
後において基準信号を発生するとともに、相手から送信
された基準信号を認識する送受信路確立用交流信号発生
・認識装置と、この送受信路確立用交流信号発生・認識
装置による相手からの基準信号の識別により、両音声会
議装置のマイクロホン系とスピーカ系を互いにクロスさ
せて接続し、通話路を順方向に接続せしめる手段とから
なるものである。The audio conference device according to the present invention is composed of a microphone system, a speaker system, and an audio switch, and uses two analog public telephone lines, one of which is a transmission line for audio conference communication, and the other is a reception line. In an audio conference device that realizes an audio communication conference mode, each line
After receiving a call and establishing a two-way communication path, the transmission/reception path generates a reference signal immediately after pressing the two-line conference button to switch to the single-line voice communication conference mode, and recognizes the reference signal sent from the other party. The AC signal generation/recognition device for establishment and the reference signal from the other party are identified by the AC signal generation/recognition device for establishing the transmission/reception path, and the microphone system and speaker system of both audio conferencing devices are crossed and connected to each other, and a call is made. and means for connecting the lines in the forward direction.
この発明においては、予め各音声会議装置に搭載した送
受信路確立用交流信号発生・認識装置から発生させた基
準信号をアナログ電話回線に送出し、一方電話回線から
送られてくる基準信号を該認識装置により受信・識別し
、両回線の何れを送信線とし他方を受信線とするかを予
め定められた通り順方向に双方を接続する。In this invention, a reference signal generated from an AC signal generation/recognition device for establishing a transmission/reception path installed in each audio conference device in advance is sent to an analog telephone line, and a reference signal sent from the telephone line is used for recognition. The device receives and identifies which of the two lines is the transmission line and which of the lines is the reception line, and connects both lines in the forward direction as determined in advance.
第１図はこの発明の一実施例を示す構成図であって、１
３は送受信線切替えリレー回路、４１゜４２はそれぞれ
二回線会議時の送受信用の回線終端回路、１４は送受信
路確立用交流信号発生・認識装置の接続切替え用リレー
、４３は送受信路確立用交流信号発生・認識回路接続用
回線終端回路、１１は送受信路確立用交流信号発生・認
識装置、１２は制御回路であり、その他は第５図と同じ
である。この発明の音声会議装置は上記の各部から構成
され、アナログ電話回線に接続して使用される。FIG. 1 is a block diagram showing an embodiment of the present invention,
3 is a transmitting/receiving line switching relay circuit, 41 and 42 are respectively line termination circuits for transmitting and receiving during a two-line conference, 14 is a relay for connecting and switching the AC signal generation/recognition device for establishing a transmitting/receiving path, and 43 is an AC for establishing a transmitting/receiving path. A line termination circuit for connecting a signal generation/recognition circuit, 11 an AC signal generation/recognition device for establishing a transmission/reception path, 12 a control circuit, and the rest are the same as in FIG. 5. The audio conference device of the present invention is comprised of the above-mentioned parts, and is used by being connected to an analog telephone line.
第２図は、第１図の送受信路確立用交流信号発生・認識
回路１１およびこの回路が送受信した信号により相手装
置確認および接続されるべき送・受話通話路の決定が行
われる送受成立を示すタイムチャートである。FIG. 2 shows the AC signal generation/recognition circuit 11 for establishing the transmission/reception path shown in FIG. This is a time chart.
これの動作は、次の通りである。二回線会議通話時は、
−回線会議通話状態を各々の回線について実現したのち
、二回線会議モードに移行するための釦を押下する（な
お、釦についてはその構成自体は周知のものであるので
、図示は省略しである）。それぞれの接続端子９．１０
に回線終端回路４１．４２が接続され、局内リレーの保
持を行うとともに、二回線会議釦押下により制御回路１
２で制御される接点切替え用リレー１４を介して送信線
接続端子９側のアナログ電話回線に送受信路確立用交流
信号発生・認識回路１１が接続され、他方受信線接続端
子１０側のアナログ電話回線には回線終端回路４２が接
続される（第１図の図示の状態）。The operation of this is as follows. During a two-line conference call,
- After realizing the line conference call state for each line, press the button to shift to the two-line conference mode (note that the configuration of the button itself is well known, so it is not shown in the diagram). ). Each connection terminal 9.10
The line termination circuits 41 and 42 are connected to hold the internal relay, and the control circuit 1 is connected by pressing the two-line conference button.
An AC signal generation/recognition circuit 11 for establishing a transmission/reception path is connected to the analog telephone line on the transmission line connection terminal 9 side via a contact switching relay 14 controlled by the contact switching relay 14 controlled by the contact switching relay 14 controlled by the contact switching relay 14 controlled by the contact switching relay 14 . A line termination circuit 42 is connected to (the state shown in FIG. 1).
制御回路１２の制御の下で、送受信路確立用交流信号発
生・認識回路１１から、第２図に示すようなタイムチャ
ートに従い、ランダムに交流信号が送信線接続端子９を
経て送出されたのち、これもランダムな時間で送受信路
確立用交流信号発生・認識回路１１が接続端子９に接続
され、回線を経由して送られてくる相手装置の交流信号
を受信可能とする。Under the control of the control circuit 12, AC signals are randomly sent out from the AC signal generation/recognition circuit 11 for establishing a transmission/reception path via the transmission line connection terminal 9 according to the time chart shown in FIG. Also at random times, the AC signal generation/recognition circuit 11 for establishing a transmission/reception path is connected to the connection terminal 9, making it possible to receive AC signals from the other device sent via the line.
このような動作を受信線接続端子１０についても交互に
実行し、二つの回線について相互に送受信を数回繰り返
し相手の装置が同一機種であり、かつ一方を送信（また
は受信）・他方を受信（または送信）と制御回路１２が
確認するまで一定時間以内で継続される（これをネゴシ
ェーションと呼ぶ）、この結果、確認されると予め定め
られている様式に従い一方を送信路・他方を受信路と確
定し送信路側にはマイクロホン系を、受信路側にはスピ
ーカ系を接続し音声会議用の音声スイッチ回路３を動作
させ会議通話を可能とし、送受信路確立用交流信号発生
・認識回路１１を両接続端子９．１ｏから切り離す。Such an operation is performed alternately on the reception line connection terminal 10, and mutual transmission and reception is repeated several times on the two lines, and if the other device is the same model, and one is transmitting (or receiving) and the other is receiving ( (or transmission) is continued within a certain period of time until the control circuit 12 confirms it (this is called negotiation). As a result, once confirmation is confirmed, one is the transmission path and the other is the reception path. A microphone system is connected to the transmission path side, a speaker system is connected to the reception path side, the audio switch circuit 3 for audio conference is activated to enable a conference call, and the AC signal generation/recognition circuit 11 for establishing the transmission/reception path is connected. Disconnect from both connection terminals 9.1o.
ネゴシェーションによる二回線会議通話確立後は、例え
ばマイクロホン１に収音された送話音声は、増幅器２．
音声スイッチ回路３．二回線会議時の回線終端回路４１
．送信線接続端子９を介してアナログ電話回線に送出さ
れる。一方、受信音声信号は、受信線接続端子１０から
入力し回線終端回路４２．音声スイッチ回路３．増幅器
６．スピーカ７を経て受聴される。After the two-line conference call is established through negotiation, the transmitted voice picked up by the microphone 1, for example, is transmitted to the amplifier 2.
Audio switch circuit 3. Line termination circuit 41 for two-line conference
．． It is sent out to the analog telephone line via the transmission line connection terminal 9. On the other hand, the received audio signal is input from the reception line connection terminal 10 and is input to the line termination circuit 42. Audio switch circuit 3. Amplifier 6. It is heard through the speaker 7.
このような構成で作用することから、−回線会議通話接
続をアナログ電話回線のそれぞれに順次接続し、その後
、単に二回線会議通話釦を押下するだけで、簡単に二回
線会議通話が実現でき、さらにアナログ電話−回線を用
いた音声会議通話における側音結合による音声スイッチ
挿入損失量が大きくなるという問題を容易に排除できる
こととなる。Working in this configuration, - A two-line conference call can be easily achieved by connecting a line conference call connection to each of the analog telephone lines in turn, and then simply pressing the two-line conference call button; Furthermore, the problem of increased voice switch insertion loss due to sidetone coupling in voice conference calls using analog telephone lines can be easily eliminated.
その結果としては、−回線会議通話時におけるスピーカ
・マイクロホンの音響結合と側音結合の両方で決まる音
声スイッチ回路の挿入損失量を大きな値から、この発明
を用いることにより対向通話する音声会議装置の音響結
合路だけで決まる少ない挿入損失量にすることができる
利点を有している。As a result, - By using this invention, the insertion loss of the voice switch circuit determined by both the acoustic coupling and the sidetone coupling of the speaker microphone during a line conference call can be reduced to a large value. This has the advantage that the amount of insertion loss determined only by the acoustic coupling path can be reduced.
また、ネゴシェーションの送受信路確立用交流信号発生
・認識回路１１に音声会議装置が相手接続用に既に搭載
しているＰＢ信号発生回路を流用することにより、信号
発生用に特別な装置を準備する必要がなく経済的に、か
つ小型に実現できる。さらに、送受信路確立用交流信号
発生・認識回路１１にもＰＢ傷信号受信するために設計
・製造されているＰＢ信号受信回路を用いることができ
る。In addition, a special device for signal generation is prepared by reusing the PB signal generation circuit already installed in the audio conference device for connection to the other party as the AC signal generation/recognition circuit 11 for establishing a transmission/reception path for negotiation. There is no need to do this, so it can be realized economically and compactly. Furthermore, a PB signal receiving circuit designed and manufactured for receiving PB flaw signals can be used for the AC signal generation/recognition circuit 11 for establishing a transmission/reception path.
第３図は、第１図に示すこの発明を用い、二回線会議中
にＦＡＸ、など外部機器を用いて相手通話者との間で送
受信するモードに移行する場合、二回線会議通話モード
に移行時の両会議装置間のネゴシェーション結果をもと
に制御回路１２で予め定められた順序に従い何れかのア
ナログ電話回線を音声通話回路に、また、他方のアナロ
グ電話回線を外部機器に接続する。例えば、二回線会議
通話から一回線会議通話移行後には、マイクロホン１．
スピーカ７および音声スイッチ回路３をリレー回路１６
を経て防側音回路４に接続したのち、回線切替えリレー
１７を経て送信線接続端子９に接続される。一方、受信
線接続端子１０は回線切替えリレー１８を経てファクシ
ミリなど外部機器１５に接続される。また、制御回路１
２は二回線会議通話時に何れの回線を送信とし、他方を
受信としたかを記憶しているので、外部機器使用後は直
ちに先に述べたのと逆の動作により元の二回線会議通話
モードに戻ることができる。FIG. 3 shows a transition to a two-line conference call mode when using the present invention shown in FIG. The control circuit 12 connects one of the analog telephone lines to the voice call circuit and the other analog telephone line to the external device in a predetermined order based on the negotiation results between the two conference devices at the time. . For example, after transitioning from a two-line conference call to a single-line conference call, microphone 1.
The speaker 7 and the audio switch circuit 3 are connected to the relay circuit 16
After connecting to the side protection sound circuit 4 via the line switching relay 17, it is connected to the transmission line connection terminal 9. On the other hand, the reception line connection terminal 10 is connected to an external device 15 such as a facsimile via a line switching relay 18. In addition, the control circuit 1
2 remembers which line is used for transmitting and which line is used for receiving during a two-line conference call, so after using an external device, immediately return to the original two-line conference call mode by reversing the operation described above. can return to.
以上の動作により、二回線音声会議中に音声会議装置に
接続されたファクシミリ等の外部機器１５を用いて送受
信する必要が通話相手との間で生じた場合、外部機器割
込み釦を単に押下するだけで、二回線会議通話形態を直
ちに一回線拡声通話に切り替え、通話音声信号は送信線
接続端子９を経て電話回線に、ファクシミリなど外部機
器１５を他の電話回線に接続できることとなる。With the above operation, if it becomes necessary to send and receive data between the other party using the external device 15 such as a facsimile connected to the audio conference device during a two-line audio conference, simply press the external device interrupt button. Then, the two-line conference call format is immediately switched to a single-line loudspeaker call, and the call audio signal can be connected to the telephone line via the transmission line connection terminal 9, and external equipment 15 such as a facsimile can be connected to another telephone line.
その効果としては、二回線会議中に相手に資料等を送付
する必要が生じた場合、拡声通話を中断することなく、
通話と並行して外部機器から相手に資料を送付すること
ができる。さらに、外部機器使用後は直ちに二回線会議
通話モードに戻るため再び高品質な音声会議が実行され
る。The effect of this is that if it is necessary to send materials to the other party during a two-line conference, the loudspeaker call can be sent without interrupting the call.
You can send materials to the other party from an external device in parallel with the call. Furthermore, after using an external device, the system immediately returns to the two-line conference call mode, allowing a high-quality voice conference to be held again.
さらに送受信路確立用交流信号発生・認識装置１１用に
公衆電話網や電話機に広く用いられており、音声会議装
置にも回線接続用として搭載されている押し釦ダイヤル
信号発生器を装置の一部としても流用し、さらに押し釦
ダイヤル信号受信器を用いることにより装置の小型化・
経済化を図ることができる。また、−組の送受信路確立
用交流信号発生・認識装置１１から回線への信号送出タ
イミングおよび受信タイミングをランダムな周期とする
ことにより、同音声会議装置間において互いに信号送出
状態同士、または受信状態同士が続くことなく、一方が
信号送出状態のとき他方は受信状態になるタイミングが
必ず生じ、両回線の送・受信路確立を確実なものにし、
かつ公衆回線の漏話などによる誤動作の確立を少なくす
ることができる。In addition, a push-button dial signal generator, which is widely used in public telephone networks and telephones, and is also installed in audio conferencing devices for line connection, is included as part of the device for AC signal generation/recognition device 11 for establishing a transmission/reception path. Furthermore, by using a push button dial signal receiver, the device can be miniaturized and
Economicalization can be achieved. In addition, by setting the signal transmission timing and reception timing from the AC signal generation/recognition device 11 for establishing a transmission/reception path of the - pair to the line at random intervals, it is possible to change the signal transmission state or reception state between the same audio conference devices. There is always a timing when one line is in a signal sending state and the other is in a receiving state, ensuring that the transmission and reception paths for both lines are established.
In addition, it is possible to reduce the possibility of malfunctions caused by crosstalk on public lines.
そして、一時的に一回線会議を行うとき、二回線のうち
どちらの回線で行うかという判定を使用者がするので非
常に煩わしいが、外部機器通信を行うとき、使用者が両
回線のいずれを使用するかを意識することなく、予め定
められた手順に従い、自動的に回線を選択することがで
きる。When holding a temporary one-line conference, the user has to decide which of the two lines to use, which is very troublesome, but when communicating with external devices, the user has to decide which of the two lines to use. It is possible to automatically select a line according to a predetermined procedure without being aware of whether to use it.
以上説明したようにこの発明は、一回線毎に発着信動作
を行い各々双方向通話路を成立した後、一回線音声通信
会議モードへの移行を二回線会議ボタン押下直後におい
て基準信号を発生するとともに、相手から送信された基
準信号を認識する送受信路確立用交流信号発生・認識装
置と、この送受信路確立用交流信号発生・認識装置によ
る相手からの基準信号の識別により、同音声会議装置の
マイクロホン系とスピーカ系を互いにクロスさせて接続
し、通話路を順方向に接続せしめる手段とで構成したの
で、電話回線を二回線用いて高品質な拡声会議通話を実
現する場合に、どちらを会議音声の送信とし他方を会議
音声の受信とするかのネゴシェーションを操作者を煩わ
せることなく自動的に決定できるので、簡単な構成で高
品質な会議通話を実現できる、またこのネゴシェーショ
ン信号にＰＢ侶号発生・受信１回路を用いれば前記機能
を経済的、かつ小型に実現できる、さらに二回線会議通
話中にファクシミリなどの外部機器を通話に割込ませて
使用する必要が生じた場合でも会議通話を中断する必要
もなく、通常外部機器を使用するのと同様な操作程度で
簡単に実現でき、かつ外部機器使用後は先のネゴシェー
ション結果が音声会議装置内に蓄積されているために簡
単に、かつ即座に復旧することができる利点を有する。As explained above, in this invention, after making and receiving calls for each line and establishing two-way communication paths, a reference signal is generated immediately after pressing the two-line conference button to switch to the one-line voice communication conference mode. In addition, an AC signal generation/recognition device for establishing a transmission/reception path that recognizes a reference signal sent from the other party, and an identification of the reference signal from the other party by this AC signal generation/recognition device for establishing a transmission/reception path, enable the audio conference device to The microphone system and speaker system are connected crosswise to each other, and the communication path is connected in the forward direction, so when realizing high-quality loudspeaker conference calls using two telephone lines, which one is used for the conference call? The negotiation between sending audio and receiving conference audio can be automatically determined without bothering the operator, making it possible to achieve high-quality conference calls with a simple configuration. If one circuit for generating and receiving PB numbers is used for the signal, the above function can be realized economically and compactly.Furthermore, it becomes necessary to use an external device such as a facsimile machine to interrupt the call during a two-line conference call. Even if an external device is used, there is no need to interrupt the conference call, and the result of the previous negotiation is stored in the audio conference device after the external device is used. It has the advantage of being able to be easily and immediately restored.
第１図はこの発明になる音声会議通信装置の一実施例の
構成を示すブロック図、第２図はこの発明になる音声会
議通信装置の送受信路確立用信号タイミングチャート、
第３図はこの発明になる音声会議通信装置を用いた一回
線会議通話およびＦＡＸ通信接続図、第４図は従来例の
拡声電話機の構成を示すブロック図、第５図は従来例の
音声会議通信装置の構成を示すブロック図である。
図中、１は拡声電話機のマイクロホン、２は拡声電話機
のマイクロホン用の増幅器、３は音声スイッチ回路、４
は防側音回路、５はＰＢ信号発生回路、６はスピーカ用
の増幅器、７はスピーカ、８は電話回線接続端子、９は
送信線接続端子、１０は受信線接続端子、１１は送受信
路確立用交流信号発生・認識装置、１２は制御回路、１
３は制御回路１２により制御される音声会議装置の送受
信線接続切替えリレー、１４は制御回路１２により制御
される送受信路確立用交流信号発生・認識装置の接続切
替え用リレー、４１．４２．４３は二回線会議時の送受
信用の回線終端回路、１５は外部機器、１６はリレー回
路、１７．１８は回線切替えリレーである。
第４図
第５図FIG. 1 is a block diagram showing the configuration of an embodiment of an audio conference communication device according to the invention, and FIG. 2 is a signal timing chart for establishing a transmission/reception path of the audio conference communication device according to the invention.
FIG. 3 is a one-line conference call and FAX communication connection diagram using the audio conference communication device of the present invention, FIG. 4 is a block diagram showing the configuration of a conventional loudspeaker telephone, and FIG. 5 is a conventional audio conference call diagram. FIG. 2 is a block diagram showing the configuration of a communication device. In the figure, 1 is the microphone of the loudspeaker telephone, 2 is the amplifier for the microphone of the loudspeaker telephone, 3 is the audio switch circuit, and 4 is the microphone of the loudspeaker telephone.
5 is a side sound circuit, 5 is a PB signal generation circuit, 6 is a speaker amplifier, 7 is a speaker, 8 is a telephone line connection terminal, 9 is a transmission line connection terminal, 10 is a reception line connection terminal, 11 is a transmission/reception path establishment AC signal generation/recognition device for use, 12 is a control circuit, 1
3 is a transmission/reception line connection switching relay for the audio conference device controlled by the control circuit 12; 14 is a connection switching relay for the transmission/reception path establishment AC signal generation/recognition device controlled by the control circuit 12; 15 is an external device, 16 is a relay circuit, and 17 and 18 are line switching relays. Figure 4 Figure 5
Claims (4)
から構成されアナログ公衆電話回線を二回線用い、この
一回線の一方を音声会議通信の送信線、他方を受信線と
する一回線音声通信会議モードを実現する音声会議装置
において、一回線毎に発着信動作を行い各々双方向通話
路を成立した後、一回線音声通信会議モードへの移行を
二回線会議ボタン押下直後において基準信号を発生する
とともに、相手から送信された基準信号を認識する送受
信路確立用交流信号発生・認識装置と、この送受信路確
立用交流信号発生・認識装置による相手からの基準信号
の識別により、両音声会議装置のマイクロホン系とスピ
ーカ系を互いにクロスさせて接続し、通話路を順方向に
接続せしめる手段とからなることを特徴とする音声会議
装置。(1) A single-line audio conference mode is realized using two analog public telephone lines consisting of a microphone system, speaker system, and audio switch, with one line serving as the transmission line for audio conference communications and the other as the receiving line. In an audio conference device, after making and receiving calls for each line and establishing a two-way communication path, a reference signal is generated immediately after pressing the two-line conference button to switch to the one-line audio conference mode, and the other party The AC signal generation/recognition device for establishing a transmission/reception path recognizes the reference signal sent from the other party, and the AC signal generation/recognition device for establishing the transmission/reception path recognizes the reference signal from the other party. 1. An audio conference device comprising means for connecting speaker systems in a cross-connected manner to connect a communication path in a forward direction.
押し釦ダイヤル信号発生器および同受信器を用いること
を特徴とする特許請求の範囲第（１）項記載の音声会議
装置。(2) The audio conference device according to claim (1), characterized in that a push-button dial signal generator and a receiver thereof are used as an AC signal generation/recognition device for establishing a transmission/reception path.
認識装置を一組搭載し、交流信号発生のタイミングおよ
び発生間隔をランダムに行うとともに、前記送受信路確
立用交流信号発生・認識装置の各回線への接続の周期を
交互に行うことを特徴とする特許請求の範囲第（１）項
または第（２）項記載の音声会議装置。(3) Each audio conference device generates an AC signal for establishing a transmission/reception path.
It is characterized in that it is equipped with a set of recognition devices, and the timing and generation interval of alternating current signal generation are random, and the period of connection of the alternating current signal generation/recognition device for establishing a transmission/reception path to each line is alternated. An audio conference device according to claim (1) or (2).
時的に一回線会議モードに移行後再度二回線会議モード
に戻る際に該先の情報により即座に通話路を順方向に接
続せしめるよう動作することを特徴とする特許請求の範
囲第（１）項または第（２）項記載の音声会議装置。(4) After establishing a transmission/reception path, memorize the line information and immediately connect the call path in the forward direction based on the information when temporarily switching to single-line conference mode and then returning to two-line conference mode. The audio conferencing device according to claim 1 or 2, characterized in that the audio conferencing device operates to encourage the user to communicate with the user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62153488A JP2588896B2 (en) | 1987-06-22 | 1987-06-22 | Audio conference equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62153488A JP2588896B2 (en) | 1987-06-22 | 1987-06-22 | Audio conference equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63318852A true JPS63318852A (en) | 1988-12-27 |
| JP2588896B2 JP2588896B2 (en) | 1997-03-12 |
Family
ID=15563666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62153488A Expired - Fee Related JP2588896B2 (en) | 1987-06-22 | 1987-06-22 | Audio conference equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2588896B2 (en) |
-
1987
- 1987-06-22 JP JP62153488A patent/JP2588896B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2588896B2 (en) | 1997-03-12 |
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