公开(公告)号：US06167057A

公开(公告)日：2000-12-26

申请号：US26181

申请日：1998-02-19

申请人： Tomohisa Kishigami ,  Akihiro Sasaki ,  Shigeru Uehara ,  Yasushi Shinojima ,  Akihiro Tanaka

发明人： Tomohisa Kishigami ,  Akihiro Sasaki ,  Shigeru Uehara ,  Yasushi Shinojima ,  Akihiro Tanaka

IPC分类号： H04L1/00 ,  H04L12/40 ,  H04L12/413 ,  H04L29/06 ,  H04L29/08 ,  H04L3/12 ,  H04L3/16

CPC分类号： H04L1/009 ,  H04L1/0007 ,  H04L1/0083 ,  H04L12/4135 ,  H04L29/06 ,  H04L69/324

摘要： In a data communication system in which many nodes are connected to a common data bus so that each node can communicate with other nodes, a data frame to be transmitted from a node to other nodes includes a message having a variable length interposed between a signal indicating the length of the message and a signal indicating the end of the message in the frame. The message and the signals are coded according to a coding rule such as NRZ, and a bit stuffing rule is applied to the signal indicating the length of the message and the message while another rule violating the bit stuffing rule is applied to the signal indicating the end of the message. When the message length is changed due to noise or other causes in the course of data transmission, the signal indicating the end of the message is clearly detected at a receiving end because it is coded according to a rule different from the rule applied to the message and other signals. Further, since the length of the message actually received at the receiving end can be compared with the signal indicating the length of the message, transmission error can be detected without fail.

摘要翻译： 在其中许多节点连接到公共数据总线使得每个节点可以与其他节点通信的数据通信系统中，要从节点传送到其他节点的数据帧包括插入在指示 消息的长度和指示帧中消息结束的信号。 消息和信号根据诸如NRZ的编码规则进行编码，并且将位填充规则应用于指示消息和消息的长度的信号，而将违反位填充规则的另一规则应用于指示 消息结束。 当消息长度由于数据传输过程中的噪声或其他原因而改变时，在接收端清楚地检测出指示消息结束的信号，因为它根据与应用于消息的规则不同的规则进行编码 和其他信号。 此外，由于可以将在接收端实际接收的消息的长度与指示消息的长度的信号进行比较，所以可以毫无疑问地检测到传输错误。

公开(公告)号：US5878082A

公开(公告)日：1999-03-02

申请号：US701973

申请日：1996-08-23

申请人： Tomohisa Kishigami

发明人： Tomohisa Kishigami

IPC分类号： H04L25/03 ,  H04B3/50 ,  H04B15/00 ,  H04L25/02 ,  H04L12/40

CPC分类号： H04L25/028 ,  H04L25/0292 ,  H04L25/0272 ,  H04L25/0282 ,  H04L25/0294 ,  Y10T307/593

摘要： An ECU for executing serial communication via a transmission line has a driver circuit. The driver circuit includes an integrator for integrating a transmission signal and a power source for generating a current which corresponds to the integrated value of the transmission signal and releasing the current to the transmission line. A terminal circuit for receiving a constant current smaller than a maximum current that the driver circuit can discharge is connected to the transmission line. Since the amount of output current from the driver circuit is gradually changed, the generation of noise in the transmission line can be prevented. Further, since the voltage of the transmission line immediately changes to either a high or low level depending on the amount of output current, accurate data communication can be performed.

摘要翻译： 通过传输线执行串行通信的ECU具有驱动电路。 驱动器电路包括用于积分发送信号的积分器和用于产生对应于发送信号的积分值并将电流释放到传输线的电流的电源。 用于接收小于驱动器电路可以放电的最大电流的恒定电流的端子电路连接到传输线。 由于来自驱动电路的输出电流的量逐渐变化，所以可以防止传输线中的噪声的产生。 此外，由于传输线的电压根据输出电流量立即变为高电平或低电平，因此可以进行精确的数据通信。

公开(公告)号：US4682228A

公开(公告)日：1987-07-21

申请号：US765525

申请日：1985-08-14

申请人： Noriyoshi Ando ,  Hajime Mikuni ,  Mitsuru Matsunaga ,  Naoki Horie ,  Tomohisa Kishigami

发明人： Noriyoshi Ando ,  Hajime Mikuni ,  Mitsuru Matsunaga ,  Naoki Horie ,  Tomohisa Kishigami

IPC分类号： B60K35/00 ,  G09G1/00 ,  G09G1/28 ,  G09G5/02 ,  H04N9/68 ,  H04N9/73 ,  H04N5/58

CPC分类号： H04N9/68 ,  G09G5/02

摘要： A color video display apparatus for vehicles detects a light or dark condition outside a vehicle to perform a variable gain control on a circuit for amplifying blue, green and red video signals. In response to the dark condition outside the vehicle, the amplification factor of the red video signal is increased relative to those of the blue and green video signals.

摘要翻译： 用于车辆的彩色视频显示装置检测车辆外部的亮或暗条件，以对放大蓝，绿和红视频信号的电路进行可变增益控制。 响应于车外的黑暗条件，红色视频信号的放大系数相对于蓝色和绿色视频信号的放大系数增加。

公开(公告)号：US20130081106A1

公开(公告)日：2013-03-28

申请号：US13613545

申请日：2012-09-13

申请人： Yuzo Harata ,  Yasuyuki Takahashi ,  Satoshi Suzuki ,  Mitsuyoshi Natsume ,  Tomohisa Kishigami

发明人： Yuzo Harata ,  Yasuyuki Takahashi ,  Satoshi Suzuki ,  Mitsuyoshi Natsume ,  Tomohisa Kishigami

IPC分类号： G06F21/00

CPC分类号： G06F21/554 ,  G06F21/85 ,  H04L12/40 ,  H04L43/0811 ,  H04L2012/40273

摘要： A bus monitoring security device is connected to a bus, which includes a tool side bus having a tool connection terminal and an ECU side bus. The ECU side bus is coupled with an ECU, and the tool side bus is coupled with a tool capable of communicating with the ECU via the tool connection terminal. The tool side bus and the ECU side bus are separately coupled with the bus monitoring security device. The bus monitoring security device includes: a controller for determining whether the tool being to access the ECU is connected to the ECU side bus, and for restricting transmission and reception of data between the tool and the ECU when the controller determines that the tool is connected to the ECU side bus.

摘要翻译： 总线监控安全装置连接到总线，其包括具有工具连接端子和ECU侧总线的工具侧总线。 ECU侧总线与ECU耦合，并且工具侧总线与能够经由工具连接端子与ECU通信的工具耦合。 工具侧总线和ECU侧总线分别与总线监控安全设备耦合。 总线监视安全装置包括：用于确定是否要访问ECU的工具被连接到ECU侧总线的控制器，并且当控制器确定该工具被连接时用于限制工具和ECU之间的数据的发送和接收 到ECU侧总线。

公开(公告)号：US20130034132A1

公开(公告)日：2013-02-07

申请号：US13564986

申请日：2012-08-02

申请人： Naoji Kaneko ,  Tomohisa Kishigami ,  Hideki Kashima

发明人： Naoji Kaneko ,  Tomohisa Kishigami ,  Hideki Kashima

IPC分类号： H04B1/40

CPC分类号： H04L12/10 ,  H04J3/0697 ,  H04L12/40039 ,  H04L2012/40215 ,  Y02D50/20

摘要： An encoding circuit encodes a NRZ code into a transmission line code. A decoding circuit decodes the transmission line code into a NRZ code. If an operation-mode specified by a setting signal is a normal-mode, a transmission switching circuit provides transmit-data received from an input terminal to the encoding circuit to output the encoded transmit-data as communication-data from a communication terminal. If the operation-mode is a sleep-mode, the transmission switching circuit outputs the transmit-data received from the input terminal as the communication-data from the communication terminal. If the operation-mode specified by the setting signal is a normal-mode, a reception switching circuit provides the communication-data received from the communication terminal to the decoding circuit to output the decoded communication-data as receive-data from an output terminal. If the operation-mode is a sleep-mode, the reception switching circuit outputs the communication-data received from the communication terminal as the receive-data from the output terminal.

摘要翻译： 编码电路将NRZ码编码成传输线码。 解码电路将传输线代码解码为NRZ码。 如果由设置信号指定的操作模式是正常模式，则传输切换电路将从输入终端接收的发送数据提供给编码电路，以从通信终端输出编码的发送数据作为通信数据。 如果操作模式是睡眠模式，则传输切换电路从通信终端输出从输入终端接收的发送数据作为通信数据。 如果由设置信号指定的操作模式是正常模式，则接收切换电路将从通信终端接收到的通信数据提供给解码电路，以将输出解码的通信数据作为接收数据从输出终端输出。 如果操作模式是休眠模式，则接收切换电路将从通信终端接收的通信数据作为接收数据从输出端子输出。

公开(公告)号：US20120293230A1

公开(公告)日：2012-11-22

申请号：US13471559

申请日：2012-05-15

申请人： Hiroyuki MORI ,  Hiroyuki Obata ,  Masahiro Kitagawa ,  Tomohisa Kishigami ,  Tomoyuki Koike ,  Noboru Maeda ,  Youichirou Suzuki

发明人： Hiroyuki MORI ,  Hiroyuki Obata ,  Masahiro Kitagawa ,  Tomohisa Kishigami ,  Tomoyuki Koike ,  Noboru Maeda ,  Youichirou Suzuki

IPC分类号： H03K5/08

CPC分类号： H04L25/026

摘要： An inter-line switching element formed of a MOSFET is provided between a pair of signal lines. When the level of a differential signal changes from high to low, a control circuit turns on the FET for a fixed period thereby to suppress ringing by decreasing the impedance between the signal lines when the level of the differential signal transitions, and causing the energy of the distortion of the differential signal waveform to be absorbed by the on-resistance of the FET.

摘要翻译： 在一对信号线之间设置由MOSFET构成的线间开关元件。 当差分信号的电平从高变为低时，控制电路使FET持续一定时间，从而通过在差分信号的电平转变时减小信号线之间的阻抗来抑制振铃，并且使能 差分信号波形的失真将被FET的导通电阻吸收。

公开(公告)号：US08248182B2

公开(公告)日：2012-08-21

申请号：US12713633

申请日：2010-02-26

申请人： Tomohisa Kishigami ,  Aya Yoshimura

发明人： Tomohisa Kishigami ,  Aya Yoshimura

IPC分类号： H03H11/28

CPC分类号： H04L12/40045

摘要： The communication system includes a trunk line constituted of first and second signal lines for transmitting differential signals, a plurality of branch lines each branching from the trunk line and connected with a node, and at least one reflection prevention circuit connected between the first and second signal lines. The reflection prevention circuit includes a rectifier circuit configured to inhibit a current from flowing between the first and second signal lines when a voltage between the differential signals is smaller than or equal to a predetermined voltage, and allow a current to flow between the first and second signal lines when the voltage between the differential signals is larger than the predetermined voltage, and a resistive element connected in series to the rectifier circuit between the first and second signal lines.

摘要翻译： 该通信系统包括由用于发送差分信号的第一和第二信号线构成的中继线，从中继线分支并与节点连接的多个分支线，以及连接在第一和第二信号之间的至少一个反射防止电路 线条。 反射防止电路包括：整流电路，其配置为当差分信号之间的电压小于或等于预定电压时阻止电流在第一和第二信号线之间流动，并且允许电流在第一和第二信号之间流动 当差分信号之间的电压大于预定电压时的信号线，以及与第一和第二信号线之间的整流电路串联连接的电阻元件。

公开(公告)号：US20120051241A1

公开(公告)日：2012-03-01

申请号：US13199438

申请日：2011-08-30

申请人： Hiroyuki Mori ,  Masayoshi Satake ,  Tomohisa Kishigami ,  Toshihiko Matsuoka

发明人： Hiroyuki Mori ,  Masayoshi Satake ,  Tomohisa Kishigami ,  Toshihiko Matsuoka

IPC分类号： H04L12/26 ,  H04J3/22

CPC分类号： H04L41/0833 ,  H04L12/12 ,  H04L12/40039 ,  H04L2012/40215 ,  Y02D50/30 ,  Y02D50/40

摘要： In a communication system, plural nodes are communicably connected to a communication line and mutually communicate based on an NRZ (Non Return to Zero) code. Each node detects, as a data frame head, a dominant level when a signal on the line changes to a dominant level during a stand-by state of the line. An activation frame is transmitted during a sleep mode. The activation frame has an activation pattern area storing therein a bit pattern showing that the frame is the activation frame, a specific pattern area storing therein a bit pattern showing a node to be activated, a boundary position satisfying a predetermined boundary condition and being a boundary between the activation and specific pattern areas. Each node performs a switchover from the sleep mode to a normal mode based on the bit patterns in the activation and specific pattern areas and information given by the boundary position.

摘要翻译： 在通信系统中，多个节点可通信地连接到通信线路，并且基于NRZ（非归零）码相互通信。 当线路中的信号在线路的待机状态下变为主导电平时，每个节点检测作为数据帧头的主要电平。 在休眠模式期间发送激活帧。 激活帧具有存储其中表示该帧是激活帧的位模式的激活模式区域，存储其中示出要被激活的节点的位模式的特定模式区域，满足预定边界条件并且是边界的边界位置 在激活和特定模式区域之间。 每个节点基于激活和特定模式区域中的位模式和由边界位置给出的信息，执行从睡眠模式切换到正常模式。

公开(公告)号：US20110285424A1

公开(公告)日：2011-11-24

申请号：US13097229

申请日：2011-04-29

申请人： Youichirou Suzuki ,  Noboru Maeda ,  Yasuhiro Fukagawa ,  Takahisa Koyasu ,  Masakiyo Horie ,  Tomohisa Kishigami

发明人： Youichirou Suzuki ,  Noboru Maeda ,  Yasuhiro Fukagawa ,  Takahisa Koyasu ,  Masakiyo Horie ,  Tomohisa Kishigami

IPC分类号： H03K17/00

CPC分类号： H03K17/0822 ,  H03K17/284

摘要： When a transmission signal is detected as having been changed from a high level to a low level, two transmission lines are connected for only a predetermined time through a diode by a first transistor and a second transistor. The diode is arranged such that its forward direction is from a high-side transmission line to a low-side transmission line. The diode turns on, when a potential of the high-side transmission line becomes higher than that of the low-side transmission line by ringing and a potential difference therebetween exceeds a forward drop voltage of the diode. As a result, a peak wave level of a positive side in the ringing is limited to the forward drop voltage of the diode.

摘要翻译： 当检测到发送信号已经从高电平变为低电平时，通过第一晶体管和第二晶体管通过二极管连接两条传输线只有预定的时间。 二极管被布置成使其正向方向从高侧传输线到低侧传输线。 当高侧传输线的电位通过振铃变得比低侧传输线的电位高，并且其间的电位差超过二极管的正向压降电压时，二极管导通。 结果，振铃中的正侧的峰值波电流被限制为二极管的正向压降电压。

公开(公告)号：US20110158258A1

公开(公告)日：2011-06-30

申请号：US12928928

申请日：2010-12-22

申请人： Satoshi Suzuki ,  Tomohisa Kishigami

发明人： Satoshi Suzuki ,  Tomohisa Kishigami

IPC分类号： H04J3/24

CPC分类号： H04L12/40032 ,  H04L12/4135

摘要： A communication signal processing apparatus includes: a transmitted-signal processing unit which, in accordance with a transmitted signal outputted from a communication control apparatus, transmits a communication signal indicating “dominant” via the communication line by applying a current to a communication line, and transmits a communication signal indicating “recessive” via the communication line by not applying a current to the communication line; and a received-signal processing unit which determines whether the communication signal received via the communication line indicates “dominant” or “recessive”, then outputs a received signal indicating the determination result to the communication control apparatus. The received-signal processing unit outputs a signal indicating “recessive” to the communication control apparatus as the received signal, regardless of the communication signal received via the communication line, during a signal-keeping period of time from the time when detecting a change from “dominant” to “recessive” based on the communication signal received via the communication line.

摘要翻译： 通信信号处理装置包括：发送信号处理单元，其根据从通信控制装置输出的发送信号，经由通信线路通过向通信线路施加电流来发送表示“主导”的通信信号，以及 通过不向通信线路施加电流，经由通信线路发送指示“隐性”的通信信号; 以及接收信号处理单元，其确定经由通信线路接收的通信信号是否表示“主导”或“隐性”，然后将表示确定结果的接收信号输出到通信控制装置。 接收信号处理单元在从检测到来自该接收信号的变化的时间的信号保持时段期间，不管通过通信线路接收的通信信号如何，将作为接收信号的表示“隐性”的信号输出到通信控制装置 基于经由通信线路接收到的通信信号，“显性”到“隐性”。