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1. 发明授权

US4626789A Demodulating circuit for data signal 失效
标题翻译：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。

2. 发明授权

US4573154A Data communication system with error detection/correction 失效
标题翻译：具有错误检测/校正的数据通信系统
公开(公告)号：US4573154A
公开(公告)日：1986-02-25
申请号：US538510
申请日：1983-10-03
申请人： Yukio Nakata , Osamu Shiotsu
发明人： Yukio Nakata , Osamu Shiotsu
IPC分类号： H04L1/14 , H04L12/14 , H04L12/413
CPC分类号： H04L1/14 , H04L12/14 , H04L12/413
摘要： In a data communication system which has a common transmission line, a plurality of transceivers connected to the transmission line and data processors connected to the respective transceivers, and in which data from the data processor is delivered to the common transmission line through the corresponding transceiver, and data from the common transmission line is delivered to the data processor through the transceiver, so as to perform data communications among the data processors; a data communication system wherein said each transceiver comprises a first circuit which checks if an address of the data received from the transmission line has been received without any transmission error, a second circuit which checks if the address is one directed to the particular transceiver when the absence of the transmission error has been decided by the first circuit, a third circuit which turns back and delivers the received data when the address directed to the particular transceiver has been decided by the second circuit, and a fourth circuit which compares the sent data with the data turned back from another transceiver, the sending of the data being stopped when disagreement has been detected by the fourth circuit.
摘要翻译：在具有公共传输线的数据通信系统中，连接到传输线的多个收发器和连接到各个收发器的数据处理器，并且其中来自数据处理器的数据通过对应的收发器传送到公共传输线，并且通过收发器将来自公共传输线的数据传送到数据处理器，以便在数据处理器之间执行数据通信; 数据通信系统，其中所述每个收发器包括第一电路，其检查从传输线接收的数据的地址是否已经被接收而没有任何传输错误，第二电路检查地址是否是针对特定收发器的地址已经由第一电路确定不存在传输错误，当第二电路确定指向特定收发器的地址时，返回并传送接收到的数据的第三电路，以及将发送的数据与数据从另一个收发器转回，当第四个电路检测到不一致时，数据的发送被停止。

3. 发明授权

US4547751A System for frequency modulation 失效
标题翻译：调频系统
公开(公告)号：US4547751A
公开(公告)日：1985-10-15
申请号：US492218
申请日：1983-05-06
申请人： Yukio Nakata , Osamu Shiotsu
发明人： Yukio Nakata , Osamu Shiotsu
IPC分类号： H03C3/00
CPC分类号： H03C3/00
摘要： A system for frequency modulation which generates first and second signals having different frequencies in a switching manner in accordance with the logical value of an input signal. The system includes an oscillator for generating a signal having a predetermined frequency; first and second frequency-dividers for subjecting the signal generated by the oscillator to frequency division by different integers l and m to generate first and second signals which are synchronized with each other; a third frequency-divider for subjecting an output signal from said second frequency-divider to frequency division by an integer n selected so that the product m.times.n is the least common multiple of l and m; a control device for controlling input data with an output signal from said third frequency-divider; and a switching device for selecting one of the output signals from the first and second frequency-dividers in accordance with the logical value of an output signal from the control device to generate an output which is passed through a filter for providing a modulated output.
摘要翻译：一种用于频率调制的系统，其根据输入信号的逻辑值以切换方式生成具有不同频率的第一和第二信号。该系统包括用于产生具有预定频率的信号的振荡器; 第一和第二分频器，用于对由振荡器产生的信号进行不同的整数l和m的分频，以产生彼此同步的第一和第二信号; 第三分频器，用于对来自所述第二分频器的输出信号进行分频，所选择的整数n使得乘积mxn是l和m的最小公倍数; 用于利用来自所述第三分频器的输出信号来控制输入数据的控制装置; 以及用于根据来自控制装置的输出信号的逻辑值选择来自第一和第二分频器的输出信号之一的开关装置，以产生通过用于提供调制输出的滤波器的输出。

4. 发明授权

US4516221A Data communication system 失效
标题翻译：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。

5. 发明授权

US4617565A Method and device for data communication 失效
标题翻译：用于数据通信的方法和设备
公开(公告)号：US4617565A
公开(公告)日：1986-10-14
申请号：US538509
申请日：1983-10-03
申请人： Yukio Nakata , Kaoru Suda , Osamu Shiotsu , Motoyoshi Morito
发明人： Yukio Nakata , Kaoru Suda , Osamu Shiotsu , Motoyoshi Morito
IPC分类号： H04B10/079 , H04B10/11 , H04B10/112 , H04B10/54 , H04B10/564 , H04L12/40 , H04Q9/00 , H04B9/00
CPC分类号： H04B10/1149 , H04B10/40
摘要： In this data communication system, data communication is conducted through transmission lines between a plurality of stations. At each station, the presence of data to be sent is detected, the length of the detected data is measured, and that that station is disconnected from the transmission lines when the length of data exceeds a predetermined value, to inhibit the sending of data from that station.
摘要翻译：在该数据通信系统中，通过多个站之间的传输线进行数据通信。在每个站处，检测到要发送的数据的存在，测量检测到的数据的长度，并且当数据长度超过预定值时，该站与传输线断开，以阻止从那个车站。

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