JPS60236530A - Communication control system - Google Patents

Communication control system

Info

Publication number
JPS60236530A
JPS60236530A JP59093421A JP9342184A JPS60236530A JP S60236530 A JPS60236530 A JP S60236530A JP 59093421 A JP59093421 A JP 59093421A JP 9342184 A JP9342184 A JP 9342184A JP S60236530 A JPS60236530 A JP S60236530A
Authority
JP
Japan
Prior art keywords
signal
communication
sound
circuit
sound 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
Application number
JP59093421A
Other languages
Japanese (ja)
Inventor
Takeshi Goto
健 後藤
Hirosada Nakatsu
中津　弘定
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59093421A priority Critical patent/JPS60236530A/en
Publication of JPS60236530A publication Critical patent/JPS60236530A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To attain the sound communication without using any new sound circuit (interphone circuit, etc.) nor producing mutual noises, by superposing a sound signal on a communication circuit using a bear cable. CONSTITUTION:The data signal and the sound signal on a transmission line are transmitted between lines 1 and 2-1 and 2-2 as a differential signal and an in- phase signal respectively. Then LPF3-1 and 3-2 which transmit only the data signal of a base band and delete the sound signal are put between a communication module 5 and communication circuits 1 and 2-1-2-2 respectively since it is sometimes considered that the sond signal is not delected completely owing to th delay caused by the variance of the impendance or the capacity on the circuit. When the sound signal is transmitted, the modulation is applied to the sound signal with a carrier of several 100kHz in order to avoid the superposition between the sound signal and the data signal of the base band.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、複数の端末装置とそれらを接続する一対のペ
アケーブルと、音声を入出力するためのインターホン等
の装置よシ構成される通信回線に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a communication line composed of a plurality of terminal devices, a pair of cables connecting them, and a device such as an intercom for inputting and outputting audio. It is something.

従来例の構成とその問題点 従来、データの通信と音声の通信をおこないだい場合、
同軸ケーブル等の高価な伝送線を用いるか、もしくは、
データ通信用回線とは別に音声通信用の回線をあらたに
設置する必要があったため設置のだめのコストが必要で
あり、また複数の伝送線を設置することにより室内の美
観を損なうなどの欠点があった。さらにデータ信号と音
声信号が互い（ノイズになったりすることがあった。Conventional configuration and its problems Conventionally, when performing data communication and voice communication,
Use expensive transmission lines such as coaxial cables, or
It was necessary to install a new line for voice communication in addition to the line for data communication, which required additional installation costs.In addition, installing multiple transmission lines had disadvantages such as spoiling the aesthetics of the room. Ta. Furthermore, the data signal and the audio signal sometimes became noise.

発明の目的 本発明は上記の問題点を解消するために、安価な通常の
導線によりデータの通信と音声信号の通信を同時におこ
なうことのできる通信制御システムを構成するものであ
る。OBJECTS OF THE INVENTION In order to solve the above-mentioned problems, the present invention constitutes a communication control system that can simultaneously carry out data communication and voice signal communication using inexpensive ordinary conductive wires.

発明の構成 本発明は一対のベアケーブルと、ケーブルと通信モジュ
ール間に挿入されたローパスフィルタと、ケーブルと音
声入出力端末間に挿入されたバンドパスフィルタおよび
、直流レベルをカットするためのコンデンサより構成さ
れ、データ信号を差動信号形式で、音声信号は同相信号
形式で伝送する通信制御システムである。Structure of the Invention The present invention consists of a pair of bare cables, a low-pass filter inserted between the cable and the communication module, a band-pass filter inserted between the cable and the audio input/output terminal, and a capacitor for cutting the DC level. This is a communication control system that transmits data signals in a differential signal format and audio signals in an in-phase signal format.

実施例の説明 以下、本発明の実施例について図に従い詳細に説明する
。図は本発明を実施するのに適した通信回線のブロック
図である。１は伝送線路のグランド線、２−１．２−２
は伝送線路の信号線、３−１゜３−２はローパスフィル
タ、４はバンドパスフィルタ、６はデータ送受信用の通
信モジュール、６は音声入出力用のインターホン、７は
直流成分カット用のコンデンサである。DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The figure is a block diagram of a communication line suitable for implementing the present invention. 1 is the ground line of the transmission line, 2-1.2-2
is a transmission line signal line, 3-1゜3-2 is a low-pass filter, 4 is a band-pass filter, 6 is a communication module for data transmission and reception, 6 is an intercom for audio input/output, and 7 is a capacitor for cutting DC components. It is.

本実施例では、対雑音特性の向上とデータと音声の分離
を容易にする目的で伝送線路上のデータ信号は差動信号
とし、音声信号は同相信号で線１と２−１問および線１
と２−２間に送出するっまず通信モジュール間のデータ
通信について説明する。通信回線（１，２−１〜２−２
）上に上記のように音声信号を重畳する場合、通信モジ
ュール６の入力回路は差動入力とする必要がある。In this embodiment, the data signal on the transmission line is a differential signal, and the audio signal is an in-phase signal in order to improve the noise resistance and to facilitate the separation of data and voice. 1
First, data communication between the communication modules will be explained. Communication line (1, 2-1 ~ 2-2
), the input circuit of the communication module 6 needs to be a differential input.

従って同相信号で重畳されている音声信号は、基本的に
は差動入力回路で除去される。しかし、回線上のインピ
ーダンスや容、量のバラツキなどによる遅延などが原因
で完全に除去されない場合も考えられるために、通信モ
ジュール５と通信回線１゜２−１〜２−２との間にベー
スバンドのデータ信号のみを通過し、音声信号を除去す
るローパスフィルタ３−１．３−２を挿入する。以上に
より音声信号を同時に伝送線路に重畳してもデータ通信
は従来と同様におこなうことが可能である。Therefore, the audio signal superimposed with the in-phase signal is basically removed by the differential input circuit. However, there may be cases where the removal is not completely eliminated due to delays due to variations in impedance, capacity, or amount on the line. A low-pass filter 3-1.3-2 is inserted that passes only the data signal of the band and removes the audio signal. As described above, even if audio signals are simultaneously superimposed on the transmission line, data communication can be performed in the same manner as before.

次に音声入出力装置間の音声通信について説明する。音
声信号を送出する時にベースバンドのデータ信号と重複
しないように、数１００ＫＨ２のキャリアで変調をかけ
て送出する。受信時はコンデンサ７によシ直流成分をカ
ットし、さらに音声信号の変調波の帯域のみを通過させ
るバンドパスフィルタを経由し音声入出力装置６に入力
することにより複調した時に雑音となるベースバンドの
データ信号を除去する。Next, voice communication between voice input/output devices will be explained. When transmitting an audio signal, it is modulated with a carrier of several 100 KH2 and transmitted so as not to overlap with the baseband data signal. At the time of reception, the DC component is cut by the capacitor 7, and then input to the audio input/output device 6 via a bandpass filter that passes only the band of the modulated wave of the audio signal, thereby eliminating the base that becomes noise when compounded. Remove the band's data signal.

以上の構成をとることによシ、データ通信回線を利用し
て同時に音声信号の通信をおこなうことが可能になる。By adopting the above configuration, it becomes possible to simultaneously communicate audio signals using a data communication line.

発明の効果 以上述べたように本発明により、本来データの通信のみ
に使われていたベアケーブルによる通信回線に音声信号
を重畳することで、あらたに音声用の回線（インターフ
オン回線など）を設置することなく、また互いにノイズ
となることなく、音声の通信をおこなうことが可能にな
る。Effects of the Invention As described above, the present invention enables the installation of a new voice line (interphone line, etc.) by superimposing voice signals on a bare cable communication line that was originally used only for data communication. It becomes possible to perform voice communication without causing any noise or mutual noise.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明の一実施例の通信制御システムの構成図であ
る。 １・・・・・・通信回線のグランド線、２−１．２−２
・・・・・・通信回線の信号線、３−１，３−２・・・
・・・音声信号を除去するローパスフィルタ、４・・・
・・・音声信号のみを通過させるバンドパスフィルタ、
６・・・・・・データ通信用モジュール、６・・・・・
・音声入出力装置（インターフオンなど）、７−１．７
−２・・・・・・直流成分除去用コンデンサ。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名２−
／ ／ ／ ’７−／The figure is a configuration diagram of a communication control system according to an embodiment of the present invention. 1... Communication line ground wire, 2-1.2-2
...Communication line signal line, 3-1, 3-2...
...Low pass filter that removes the audio signal, 4...
...A bandpass filter that passes only the audio signal,
6... Data communication module, 6...
・Audio input/output device (interphone, etc.), 7-1.7
-2...Capacitor for DC component removal. Name of agent: Patent attorney Toshio Nakao and 1 other person2-
／ ／ ／ '7-／

Claims (1)

【特許請求の範囲】[Claims] 一対の信号線と前記信号線に共通のグランド線を用意し
、信号線とグランド線間にデータ信号を差動形式でのせ
るとともに音声信号を同相信号形式でのせ、データ信号
はローパスフィルタを介して、また音声信号をコンデン
サおよびバンドパスフィルタを介して受信することを特
徴とする通信制御システム。A common ground line is prepared for the pair of signal lines and the signal line, and a data signal is placed between the signal line and the ground line in a differential format, and an audio signal is placed in an in-phase signal format, and the data signal is passed through a low-pass filter. A communication control system characterized in that the communication control system receives an audio signal through a capacitor and a bandpass filter.
JP59093421A 1984-05-10 1984-05-10 Communication control system Pending JPS60236530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59093421A JPS60236530A (en) 1984-05-10 1984-05-10 Communication control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59093421A JPS60236530A (en) 1984-05-10 1984-05-10 Communication control system

Publications (1)

Publication Number Publication Date
JPS60236530A true JPS60236530A (en) 1985-11-25

Family

ID=14081832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59093421A Pending JPS60236530A (en) 1984-05-10 1984-05-10 Communication control system

Country Status (1)

Country Link
JP (1) JPS60236530A (en)

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