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    Method and device for data communication
    1.
    发明授权
    Method and device for data communication 失效
    用于数据通信的方法和设备

    公开(公告)号：US4602252A

    公开(公告)日：1986-07-22

    申请号：US454030

    申请日：1982-12-28

    申请人： Yukio Nakata ,  Kaoru Suda

    发明人： Yukio Nakata ,  Kaoru Suda

    IPC分类号： H04L12/413 ,  H04Q9/00 ,  H04N15/00

    CPC分类号： H04L12/413

    摘要： A method for data communication usable for a system having a common transmission line, a plurality of transceivers connected to the common transmission line, and a data processing equipment connected to each of the transceivers, the system being arranged such that data from the data processing equipment is sent to the common transmission line through the corresponding transceiver, while data from the common transmission line is sent to the data processing equipment through the corresponding transceiver, thereby effecting a data communication between data processing equipment, wherein when a request to send data is sent from the data processing equipment to the corresponding transceiver, a carrier signal is sent to the common transmission line, and when the fact that no data is sent from any of the other transceivers to the common transmission line is detected during a given period of time after the sending of the carrier signal, the transceiver gives a permission to send data, to the corresponding data processing equipment, which then sends data on the permission. Also disclosed is a device for carrying out the above-mentioned method for data communication.

    摘要翻译： 一种可用于具有公共传输线的系统的数据通信方法，连接到公共传输线路的多个收发器以及连接到每个收发机的数据处理设备，该系统被布置为使得来自数据处理设备 通过相应的收发器发送到公共传输线，而来自公共传输线的数据通过相应的收发器发送到数据处理设备，从而实现数据处理设备之间的数据通信，其中当发送数据的请求被发送时 从数据处理设备到对应的收发器，载波信号被发送到公共传输线，并且当在给定的时间段内没有数据从任何其他收发器发送到公共传输线的事实被检测到 发送载波信号，收发器发送数据的权限，给c 或相应的数据处理设备，然后发送许可数据。 还公开了一种用于执行上述数据通信方法的装置。

    Demodulating circuit for data signal
    2.
    发明授权
    Demodulating circuit for data signal 失效
    解调电路用于数据信号

    公开(公告)号：US4626789A

    公开(公告)日：1986-12-02

    申请号：US639412

    申请日：1984-08-10

    申请人： Yukio Nakata ,  Osamu Shiotsu ,  Motoyoshi Morito ,  Kaoru Suda

    发明人： Yukio Nakata ,  Osamu Shiotsu ,  Motoyoshi Morito ,  Kaoru Suda

    IPC分类号： H03G3/34 ,  H04L1/20 ,  H04L27/22 ,  H03D3/18

    CPC分类号： H03G3/341 ,  H04L1/20 ,  H04L27/22

    摘要： In a data signal demodulating circuit for demodulating data from a modulated signal burst in which a carrier signal is modulated by a data signal, noise elimination means is provided at at least one of the input and output of an AND circuit, to eliminate noise in periods during which there is no carrier present, by adding an output from a demodulator to an output from a carrier sense circuit, in order to completely eliminate noise occurring at the start and end of a demodulated data signal, and eliminate noise occurring during the rise time and fall time of the carrier sense circuit.

    摘要翻译： 在用于通过数据信号调制载波信号的调制信号脉冲串解调数据的数据信号解调电路中，在AND电路的输入和输出中的至少一个处提供噪声消除装置，以消除周期中的噪声 在此期间没有载波存在，通过将来自解调器的输出添加到载波检测电路的输出，以便完全消除在解调数据信号的开始和结束时出现的噪声，并消除在上升时间期间发生的噪声 和载波检测电路的下降时间。

    Data communication system
    4.
    发明授权
    Data communication system 失效
    数据通信系统

    公开(公告)号：US4516221A

    公开(公告)日：1985-05-07

    申请号：US390642

    申请日：1982-06-21

    申请人： Yukio Nakata ,  Matsuaki Terada ,  Kaoru Suda ,  Motoyoshi Morito ,  Osamu Shiotsu

    发明人： Yukio Nakata ,  Matsuaki Terada ,  Kaoru Suda ,  Motoyoshi Morito ,  Osamu Shiotsu

    IPC分类号： H04B10/11 ,  H04B10/00 ,  H04B10/079 ,  H04B10/114 ,  H04B10/278 ,  H04B10/524 ,  H04L12/28 ,  H04L12/40 ,  H04B9/00

    CPC分类号： H04B10/1149 ,  H04B10/40 ,  H04L12/40013 ,  H04W4/04 ,  H04W4/18

    摘要： A data communication system including reflectors having first light emitting elements for radiating light and first light receiving elements for receiving light, a plurality of transceivers disposed confronting said reflectors and having second light emitting elements for radiating light and second light receiving elements for receiving light, and a data processing unit to be connected to the transceivers, wherein light corresponding to the data to be transmitted from the data processing unit is converged and radiated from the second light emitting element of the transceiver to the reflector, the light from the transceiver is received by the first light receiving element of the reflector, light corresponding to the data thus received is radiated from the light emitting element of the reflector to all of the transceivers confronting said reflector and is received by the second light receiving elements of the transceivers, and the data thus received is sent to the data processing unit.

    摘要翻译： 一种数据通信系统，包括具有用于照射光的第一发光元件和用于接收光的第一光接收元件的反射器，与所述反射器相对设置的多个收发器，并具有用于发光的第二发光元件和用于接收光的第二光接收元件， 数据处理单元，其连接到收发器，其中与从数据处理单元发送的数据相对应的光从收发器的第二发光元件收敛并辐射到反射器，来自收发器的光由 反射器的第一光接收元件对应于如此接收的数据的光从反射器的发光元件辐射到与所述反射器相对的所有收发器并被收发器的第二光接收元件接收，并且数据 这样接收到的数据被发送到数据处理单元。