JPH04268829A - Data transmitting method - Google Patents
Data transmitting methodInfo
- Publication number
- JPH04268829A JPH04268829A JP5040291A JP5040291A JPH04268829A JP H04268829 A JPH04268829 A JP H04268829A JP 5040291 A JP5040291 A JP 5040291A JP 5040291 A JP5040291 A JP 5040291A JP H04268829 A JPH04268829 A JP H04268829A
- Authority
- JP
- Japan
- Prior art keywords
- station
- data
- slave
- pulse
- power
- 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
- 238000000034 method Methods 0.000 title claims description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 63
- 239000003990 capacitor Substances 0.000 claims abstract description 9
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、親局に接続した一つの
伝送路に複数の子局を接続して親局と子局間でデータ伝
送を行なう方法に関し、特に親局から子局に伝送路を介
して駆動電力をも供給するようにしたデータ伝送方法に
関するものである。[Industrial Application Field] The present invention relates to a method of connecting a plurality of slave stations to a single transmission line connected to a master station and transmitting data between the master station and the slave stations, and particularly relates to a method for transmitting data between the master station and the slave stations. The present invention relates to a data transmission method in which driving power is also supplied via a transmission path.
【０００２】0002
【従来の技術】制御の指令を出す主局となる親局と、各
種センサやアクチュエータ等の小型機器を有する複数の
子局を伝送路で接続し、親局から子局側にデータを伝送
したり、また親局に子局側のデータを収集することが行
なわれている。[Background Art] A master station that issues control commands and multiple slave stations equipped with small devices such as various sensors and actuators are connected via a transmission path, and data is transmitted from the master station to the slave stations. In addition, the master station collects data from the slave stations.
【０００３】0003
【発明が解決しようとする課題】子局側から伝送路にデ
ータを送出するためには、子局側に電源部を備えるか、
または親局から各子局に電力用の配線をする必要がある
が、多数の子局が点在して配置されている場合には、各
子局のそれぞれに電源部を備えると高価なものとなり、
また親局から各子局に電力用供給用の配線を別途すると
なると配線材料も多くなって手間もかかる。[Problem to be Solved by the Invention] In order to send data from the slave station to the transmission line, it is necessary to either equip the slave station with a power supply section or
Alternatively, it is necessary to run power wiring from the master station to each slave station, but if a large number of slave stations are scattered, it would be expensive to provide a power supply section for each slave station. ,
Furthermore, if separate wiring is required for power supply from the master station to each slave station, a large amount of wiring material is required, which is time-consuming.
【０００４】本発明は上記の点に鑑み、親局から子局に
伝送路を介して電力を供給して子局の無電源化を図るこ
とを目ととしたデータ伝送方法を提供するものである。[0004] In view of the above points, the present invention provides a data transmission method with the aim of supplying power from a master station to a slave station via a transmission line so that the slave station does not need a power source. be.
【０００５】[0005]
【課題を解決するための手段】本発明は上記の目的を達
成するために、親局に接続した一つの伝送路に複数の子
局を接続し、親局から波高値がデータ搬送用のデータパ
ルスより十分に高い電源パルスを所定間隔で伝送路に送
出し、各子局では電源パルスの電荷をダイオード及びコ
ンデンサにより蓄積して子局の駆動電力とし、電源パル
スの終了時点ではダイオードの逆バイアス作用により伝
送路の両端を特性インピーダンスにより終端させた状態
にして高速デジタル信号の伝送を可能とし、前記電源パ
ルス間に伝送するデータをデータパルスとして挿入しな
がら伝送路に送出してデータ伝送を行なうようにしたも
のである[Means for Solving the Problems] In order to achieve the above object, the present invention connects a plurality of slave stations to one transmission line connected to a master station, and transmits the peak value from the master station to data for data transmission. A power pulse that is sufficiently higher than the power pulse is sent to the transmission line at a predetermined interval, and in each slave station, the charge of the power pulse is accumulated in a diode and a capacitor to serve as driving power for the slave station, and at the end of the power pulse, the diode is reverse biased. Due to this action, both ends of the transmission path are terminated by characteristic impedance, enabling high-speed digital signal transmission, and the data to be transmitted is inserted as a data pulse between the power pulses and sent out to the transmission path, thereby performing data transmission. This is how it was done.
【０００６】[0006]
【作用】本発明に係るデータ伝送方法にあっては、親局
からデータパルスより波高値の十分高い電源パルスを所
定間隔で伝送路に送出する。子局では前記電源パルスの
電荷をダイオード、コンデンサにより蓄積して子局の駆
動電力とする。これによって子局の電源装置は不要とな
る。そして前記電源パルスの終了時点ではダイオードの
逆バイアス作用により伝送路の両端を特性インピーダン
スで終端させた状態にして高速デジタル信号の伝送を可
能とさせる。そして親局と子局間のデータ伝送はデータ
パルスを前記電源パルス間に挿入して行なうのである。In the data transmission method according to the present invention, power pulses having a sufficiently higher peak value than data pulses are sent from the master station to the transmission path at predetermined intervals. In the slave station, the electric charge of the power supply pulse is accumulated by a diode and a capacitor, and is used as driving power for the slave station. This eliminates the need for a power supply device for the slave station. At the end of the power pulse, both ends of the transmission path are terminated with characteristic impedance due to the reverse bias effect of the diode, making it possible to transmit high-speed digital signals. Data transmission between the master station and the slave station is performed by inserting data pulses between the power pulses.
【０００７】[0007]
【実施例】以下本発明の一実施例を図面に基づいて説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【０００８】図１は本発明に係るデータ伝送方法を採用
した装置全体の概略構成を示したものであって、制御装
置１は通信用シリアルインターフェースであるＲＳ２３
２Ｃインターフェース２を具備しており、該ＲＳ２３２
Ｃインターフェース２に伝送部３を接続している。FIG. 1 shows a schematic configuration of the entire apparatus that employs the data transmission method according to the present invention, in which the control device 1 has an RS23 serial interface for communication.
Equipped with 2C interface 2, the RS232
A transmission section 3 is connected to the C interface 2.
【０００９】データ伝送部３は主局である親局４にツイ
ストペア線または同軸ケーブルからなる一つの伝送路５
を接続し、該伝送路５には子局となる複数の子送信局６
及び子受信局７を接続し、これら子送信局６及び子受信
局７が一つの伝送路を共有している。The data transmission unit 3 connects a master station 4, which is a main station, to a single transmission line 5 made of twisted pair wires or coaxial cables.
A plurality of slave transmitting stations 6 are connected to the transmission path 5.
and slave receiving station 7 are connected, and these slave transmitting station 6 and slave receiving station 7 share one transmission path.
【００１０】前記伝送部３の親局４には図２に示すよう
な波高値が３０Ｖの電源パルスＡを発生する電源パルス
発生部８と波高値が１０ＶのデータパルスＢを受信する
データパルス受信部９及びデータパルスＢを送信するデ
ータパルス送信部１０と、パルスを計数するカウンタ部
１１と子局の送受信局を設定する送受信設定部１２を設
け、これらを駆動する電源部１３を設けている。The master station 4 of the transmission section 3 includes a power pulse generating section 8 for generating a power pulse A having a peak value of 30V as shown in FIG. 2, and a data pulse receiving section for receiving a data pulse B having a peak value of 10V. 9, a data pulse transmitter 10 for transmitting data pulses B, a counter section 11 for counting pulses, and a transmission/reception setting section 12 for setting a transmitting/receiving station of a slave station, and a power supply section 13 for driving these. .
【００１１】子送信局６には前記電源パルスＡを検出す
る電源パルス検出部１４、各子送信局６固有の自局番号
を設定する局番設定部１５を設けると共に、パルスを計
数するカウンタ部１６、各子送受信局が同一位相、同一
周波数の正確なクロックを発生させるために各子送受信
局共通の発振器１７、データパルスＢを伝送路５に送り
出すデータパルス送出部１８を設けている。The child transmitting station 6 is provided with a power pulse detection section 14 for detecting the power pulse A, a station number setting section 15 for setting its own station number unique to each child transmitting station 6, and a counter section 16 for counting pulses. , an oscillator 17 common to each child transmitting/receiving station so that each child transmitting/receiving station generates an accurate clock of the same phase and frequency, and a data pulse sending section 18 for sending data pulse B to the transmission line 5 are provided.
【００１２】また、子受信局７には前記電源パルスＡを
検出する電源パルス検出部１９、各子受信局７固有の自
局番号を設定する局番設定部２０を設けると共に、前記
データパルスＢを受信するデータパルス受信部２１、位
相の揃った正確なクロックを発生させる各送受信局共通
の発振器２２、パルスを計数するカウンタ部２３を設け
ている。The child receiving station 7 is also provided with a power pulse detection section 19 for detecting the power pulse A, a station number setting section 20 for setting the own station number unique to each child receiving station 7, and a station number setting section 20 for setting the own station number unique to each child receiving station 7. It is provided with a data pulse receiving section 21 for receiving data, an oscillator 22 common to each transmitting/receiving station for generating accurate clocks with the same phase, and a counter section 23 for counting pulses.
【００１３】そして子送信局６及び子受信局７と伝送路
５との接続部は図４に示すようにダイオード２４とコン
デンサ２５を直列に結合した回路により構成し、コンデ
ンサ２５の両端には子送信局６及び子受信局７の電力供
給回路（図示せず）を結合している。The connection between the child transmitting station 6 and the child receiving station 7 and the transmission line 5 is constituted by a circuit in which a diode 24 and a capacitor 25 are connected in series, as shown in FIG. Power supply circuits (not shown) of the transmitting station 6 and slave receiving station 7 are coupled.
【００１４】次に、親局４と子送信局６及び子受信局７
との間のデータ伝送について説明する。Next, the master station 4, the slave transmitting station 6, and the slave receiving station 7
Data transmission between the two will be explained.
【００１５】先ず、各子送信局６の局番設定部１５及び
子受信局７の局番設定部２０にそれぞれの局番を表わす
自局番号を設定すると共に、各子送信局６から一つの伝
送路５にデータをタイミングよく整然と送出するために
、各子送信局６の自局番号に対応させてデータ送出時の
時間差を設定しておく。この設定した局番号とデータ送
出時の時間差とは親局４のにも記憶させておき、各子送
信局６から伝送される複数のデータを時間差を基に分離
して各子送信局６固有のデータを把握することが可能な
ようにしておく。First, the station number setting section 15 of each child transmitting station 6 and the station number setting section 20 of the child receiving station 7 are set with their own station numbers representing their respective station numbers, and one transmission path 5 is set from each child transmitting station 6. In order to send out data in a well-timed and orderly manner, a time difference at the time of data sending is set in correspondence with the own station number of each child transmitting station 6. The set station number and the time difference at the time of data transmission are also stored in the master station 4, and the multiple data transmitted from each child transmitting station 6 are separated based on the time difference and unique to each child transmitting station 6. Make it possible to understand the data.
【００１６】また、親局４は各子受信局７への複数のデ
ータを一つの伝送路５に順次送出するので、データの混
同が生じないようにするために、各子受信局７の局番号
に対応させたデータ送出時の時間差を設定しておく。更
に、各子受信局７にも前記設定した時間差の自局番号に
対応するものを自局のデータ取り込み時の時間差として
記憶させておき、親局４から伝送される複数のデータの
中から時間差を基に自局のデータを取り出すことが可能
なようにしておく。Furthermore, since the master station 4 sequentially sends a plurality of data to each child receiving station 7 to one transmission line 5, in order to prevent data from being mixed up, each child receiving station 7 is Set the time difference when sending data corresponding to the number. Furthermore, each child receiving station 7 also stores the time difference corresponding to the own station number of the set time difference as the time difference at the time of data acquisition of the own station, and selects the time difference from among the plurality of data transmitted from the master station 4. Make it possible to retrieve your own station's data based on .
【００１７】そして、親局４から伝送路５に図３に示す
ような波高値が３０ＶでデータパルスＢの波高値より十
分高くした電源パルスＡを所定間隔をおきながら送出す
る。各子送信局６及び子受信局７では電源パルスＡが立
ち上がり始めて伝送路５の電位がデータパルスＢの電位
より十分高くなると、ダイオード２４の電位の方向が順
バイアスとなり、電源パルスＡの電荷がダイオード２４
を通してコンデンサ２５に流入し、電源パルスＡから得
られる電荷の蓄積を開始する。電源パルスＡは図３に示
すように電荷を取り込まれてコンデンサ２５を充電し、
この電源パルスＡが立ち下がる終了時点では図４におけ
るダイオード２４が逆バイアスになって電荷の流入が停
止し、伝送路５はコンデンサ２５の影響を無視できるよ
うになり、伝送路５の両端を特性インピーダンスで終端
した状態にして高速デジタル信号の伝送を可能とする。
そしてコンデンサ２５に蓄積された電荷は子送信局６及
び子受信局７の駆動電力として利用される。Then, a power pulse A having a peak value of 30V, which is sufficiently higher than the peak value of the data pulse B, as shown in FIG. 3, is sent from the master station 4 to the transmission path 5 at predetermined intervals. In each child transmitting station 6 and child receiving station 7, when the power pulse A begins to rise and the potential of the transmission line 5 becomes sufficiently higher than the potential of the data pulse B, the direction of the potential of the diode 24 becomes forward biased, and the charge of the power pulse A increases. diode 24
through the capacitor 25 and begins to accumulate the charge obtained from the power supply pulse A. As shown in FIG. 3, the power supply pulse A takes charge and charges the capacitor 25.
At the end of the fall of the power supply pulse A, the diode 24 in FIG. 4 becomes reverse biased and the inflow of charge stops, and the influence of the capacitor 25 on the transmission line 5 can be ignored, and the characteristics of both ends of the transmission line 5 are reduced. Enables high-speed digital signal transmission by terminating with impedance. The charge accumulated in the capacitor 25 is used as driving power for the child transmitting station 6 and the child receiving station 7.
【００１８】次に、子送信局６から親局４にデータ送信
を行なう手順を説明する。Next, a procedure for transmitting data from slave transmitting station 6 to master station 4 will be explained.
【００１９】各子送信局６は電源パルス検出部１４によ
り電源パルスＡの終了時点を検出し、全子送信局６の発
振器１７を同時に発振させて同一位相、同一周波数のク
ロックを発生させ、各局の発振器１７のクロックを正確
に同期させる。そして、このクロックパルスに基づいて
予め設定した自局番号に対応した時間差をカウンタ部１
６で計数し、各子送信局６毎に設定された時間差経過後
に親局４に送出するデータをデータパルスＢとしてデー
タパルス送出部１８を介して伝送路５に送出する。図２
は電源パルスＡ間にデータパルスＢを挿入した状態を示
す伝送波形図であり、３台の子送信局６から時間差を持
たせて伝送路５にデータパルスＢを送出したものであり
、子送信局６の自局番号（１）のものが（１）の部分に
、自局番号（２）のものが（２）の部分に、自局番号（
３）のものが（３）の部分に嵌め込まれて伝送されてい
る状態を示している。なお、（０）の部分はデータの安
定期間として確保されている。Each slave transmitting station 6 detects the end point of the power pulse A by the power pulse detector 14, and causes the oscillators 17 of all slave transmitting stations 6 to oscillate simultaneously to generate clocks of the same phase and frequency. The clocks of the oscillators 17 are accurately synchronized. Then, based on this clock pulse, the counter section 1 calculates the time difference corresponding to the preset own station number.
6, and the data to be sent to the master station 4 after a time difference set for each child transmitting station 6 has elapsed is sent to the transmission path 5 as a data pulse B via the data pulse sending unit 18. Figure 2
is a transmission waveform diagram showing a state in which data pulse B is inserted between power pulses A, data pulse B is sent from three slave transmitting stations 6 to transmission line 5 with a time difference, and slave transmitter The own station number (1) of station 6 is in the (1) part, the own station number (2) is in the (2) part, and the own station number (
3) is inserted into the part (3) and is being transmitted. Note that the part (0) is secured as a data stability period.
【００２０】そして、親局４ではデータパルス受信部９
により各子送信局６から送出したデータパルスＢを受信
すると、電源パルスＡに同期させながら予め記憶してい
る各子送信局６の局番号に対応する時間差を基にデータ
パルスＢを各子送信局６毎にそれぞれ分離しながら、カ
ウンタ部１１によりデータパルスＢを一定時間計数し、
これによって各送信局６のデータを読み取るのである。
そして、この読み取ったデータをＲＳ２３２Ｃインター
フェース２を経由して制御装置１に送り込むのである。[0020] Then, in the master station 4, a data pulse receiving section 9
When the data pulse B transmitted from each child transmitting station 6 is received, the data pulse B is transmitted to each child based on the time difference corresponding to the station number of each child transmitting station 6, which is stored in advance while synchronizing with the power pulse A. The data pulses B are counted for a certain period of time by the counter section 11 while being separated for each station 6,
This allows data from each transmitting station 6 to be read. This read data is then sent to the control device 1 via the RS232C interface 2.
【００２１】続いて、親局４から子受信局７へデータ送
信を行なう手順について説明する。Next, a procedure for transmitting data from the master station 4 to the slave receiving station 7 will be explained.
【００２２】制御装置１からデータがＲＳ２３２Ｃイン
ターフェース２を経由して親局４に出力されると、親局
４では電源パルスＡに同期したクロックパルスに基づき
、予め各子受信局７毎に設定したデータ送出時の時間差
をカウンタ部１１で計数する。そして各子受信局７毎に
設定した時間が経過すれば、各子受信局７に送信するデ
ータをデータパルス送信部１０を介してデータパルスＢ
として伝送路５に順次送出する。この伝送は、前記子送
信局６から親局４に送信する時と同様に、図２のように
電源パルスＡ間に送信データを時間差を持たせて挿入し
て行なうものであり、子受信局７の自局番号（１）への
データが（１）の部分に、子受信局７の自局番号（２）
へのデータが（２）の部分に、子受信局７の自局番号（
３）へのデータが（３）の部分に嵌め込まれて伝送され
る。なお、（０）の位置は前記と同様にデータの安定期
間として確保されている。When data is output from the control device 1 to the master station 4 via the RS232C interface 2, the master station 4 uses a clock pulse synchronized with the power pulse A, which is set in advance for each child receiving station 7. A counter section 11 counts the time difference at the time of data transmission. Then, when the time set for each child receiving station 7 has elapsed, the data to be transmitted to each child receiving station 7 is sent to the data pulse B via the data pulse transmitter 10.
The data are sequentially sent out to the transmission path 5 as the data. This transmission is performed by inserting the transmission data with a time difference between the power pulses A as shown in FIG. The data for the own station number (1) of 7 is in the part (1), and the own station number (2) of the slave receiving station 7 is included in the part (1).
The data to (2) contains the own station number of the slave receiving station 7 (
The data for 3) is inserted into part (3) and transmitted. Note that the position (0) is secured as a data stable period as described above.
【００２３】各子受信局７では親局４からのパルス信号
を受信すると、電源パルス検出部１９により電源パルス
Ａの終了時点を検出し、各子受信局７の発振器２２を同
時に発振させて同一位相、同一周波数のクロックを発生
させ、それぞれの発振器２２のクロックを正確に同期さ
せる。そして、子受信局７に記憶しているデータ取り込
み時間を電源パルスＡの終了時点よりクロックパルスに
基づいてカウンタ部２３で計数し、データ取り込み時間
となればデータパルス受信部２１によりデータパルスＢ
の複数のデータの中から自局のデータの読み取りを開始
し、データパルスＢを一定時間計数することにより親局
４から送信されるデータを得るのである。When each child receiving station 7 receives a pulse signal from the master station 4, the power pulse detection unit 19 detects the end point of the power pulse A, and causes the oscillators 22 of each child receiving station 7 to oscillate at the same time. Clocks with the same phase and frequency are generated, and the clocks of the respective oscillators 22 are accurately synchronized. Then, the data acquisition time stored in the slave receiving station 7 is counted by the counter unit 23 based on the clock pulse from the end of the power pulse A, and when the data acquisition time has come, the data pulse reception unit 21 uses the data pulse B
The data to be transmitted from the master station 4 is obtained by starting reading the data of the own station from among the plurality of data of the base station 4 and counting data pulses B for a certain period of time.
【００２４】なお、上記実施例においては子送信局６、
子受信局７をそれぞれ別個に設けた例をあげたが、送受
信を兼ねた子局としても良い。また、図５は、図４に示
す伝送路の接続形式を変形した他の実施例を示す図であ
るが、図４に示す伝送路の接続形式とは伝送速度の差異
はあるものの、このような接続形式を採用しても本発明
の本質が変わるものではなく、本発明の要旨を逸脱しな
い範囲内での種々の変更は本発明に含まれることは勿論
である。[0024] In the above embodiment, the slave transmitting station 6,
Although an example has been given in which the slave receiving stations 7 are provided separately, the slave stations may also serve as transmitting and receiving stations. Furthermore, FIG. 5 is a diagram showing another embodiment in which the connection format of the transmission line shown in FIG. 4 is modified. Even if a different connection type is adopted, the essence of the present invention does not change, and it goes without saying that the present invention includes various modifications without departing from the gist of the present invention.
【００２５】[0025]
【発明の効果】以上のように本発明に係るデータ伝送方
法によれば、主局となる親局４に接続した一つの伝送路
５に子局を接続し、親局４から伝送路５上に送出される
電源パルスＡの電荷を子局で蓄積して子局の駆動電力と
するので、子局側に電源装置を具備する必要がなく、ま
た親局４からの電力供給用の配線を別途設ける必要もな
くて配線にかかる手間、コスト等も低減することができ
る。As described above, according to the data transmission method according to the present invention, a slave station is connected to one transmission line 5 connected to the master station 4 serving as the main station, and a slave station is connected to the transmission line 5 from the master station 4. Since the charge of the power pulse A sent to the slave station is accumulated in the slave station and used as driving power for the slave station, there is no need to equip the slave station with a power supply device, and wiring for power supply from the master station 4 is not required. There is no need to provide it separately, and the effort and cost required for wiring can be reduced.
【図１】本発明方法の一実施例を示す全体構成図である
。FIG. 1 is an overall configuration diagram showing an embodiment of the method of the present invention.
【図２】電源パルスとデータパルスの関係を示す伝送波
形図である。FIG. 2 is a transmission waveform diagram showing the relationship between power pulses and data pulses.
【図３】電源パルスの伝送波形図である。FIG. 3 is a transmission waveform diagram of power pulses.
【図４】伝送路と子送信局及び子受信局の接続部を示す
説明図である。FIG. 4 is an explanatory diagram showing a connection section between a transmission path, a child transmitting station, and a child receiving station.
【図５】伝送路と子送信局及び子受信局の接続の他の実
施例を示す説明図である。FIG. 5 is an explanatory diagram showing another example of connection between a transmission path, a child transmitting station, and a child receiving station.
１ 制御装置 ３ 伝送部 ４ 親局 ５ 伝送路 ６ 子送信局（子局） ７ 子受信局（子局） 1 Control device 3 Transmission section 4 Master station 5 Transmission line 6 Child transmitting station (child station) 7. Child receiving station (slave station)
Claims (1)
を接続し、親局から波高値がデータ搬送用のデータパル
スより十分に高い電源パルスを所定間隔で伝送路に送出
し、各子局では電源パルスの電荷をダイオード及びコン
デンサにより蓄積して子局の駆動電力とし、電源パルス
の終了時点ではダイオードの逆バイアス作用により伝送
路の両端を特性インピーダンスにより終端させた状態に
して高速デジタル信号の伝送を可能とし、前記電源パル
ス間に伝送するデータをデータパルスとして挿入しなが
ら伝送路に送出してデータ伝送を行なうようにしたこと
特徴とするデータ伝送方法。Claim 1: A plurality of slave stations are connected to one transmission line connected to a master station, and the master station sends power pulses whose peak value is sufficiently higher than the data pulse for data transmission to the transmission line at predetermined intervals. In each slave station, the electric charge of the power pulse is accumulated by a diode and a capacitor to serve as driving power for the slave station, and at the end of the power pulse, both ends of the transmission path are terminated with characteristic impedance due to the reverse bias effect of the diode. 1. A data transmission method, which enables high-speed digital signal transmission, and performs data transmission by inserting data to be transmitted as data pulses between the power pulses and transmitting the data to a transmission path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5040291A JPH04268829A (en) | 1991-02-22 | 1991-02-22 | Data transmitting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5040291A JPH04268829A (en) | 1991-02-22 | 1991-02-22 | Data transmitting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04268829A true JPH04268829A (en) | 1992-09-24 |
Family
ID=12857875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5040291A Pending JPH04268829A (en) | 1991-02-22 | 1991-02-22 | Data transmitting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04268829A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6468043A (en) * | 1987-09-08 | 1989-03-14 | Makuro Eng Kk | Two-wire type information transmission equipment |
-
1991
- 1991-02-22 JP JP5040291A patent/JPH04268829A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6468043A (en) * | 1987-09-08 | 1989-03-14 | Makuro Eng Kk | Two-wire type information transmission equipment |
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