公开(公告)号：US10908664B2

公开(公告)日：2021-02-02

申请号：US16211337

申请日：2018-12-06

Applicant: DENSO CORPORATION

Inventor： Kunimitsu Handa ,  Tomohisa Kishigami

IPC: G06F1/3234 ,  H04L12/10 ,  H04L12/12 ,  G06F1/26

Abstract: A PoE power supply system includes a cable, a power supply device, a power reception device, and a request switch. The power supply device includes a power supply block and a power supply control block. The power supply block is configured to enable a connection state between the power supply device and the cable to be switched. The connection state includes a power supply state in which the power supply device is supplied with power required for operating the power supply device via the cable, and a standby state in which the power supply request signal is receivable by the power supply device via the cable. The power supply control block is configured to switch the connection state to the power supply state in response to receiving a power supply request signal output from the request switch and requesting the power supply device to resume supplying the power.

公开(公告)号：US10693451B2

公开(公告)日：2020-06-23

申请号：US16273810

申请日：2019-02-12

Applicant: SOKEN, INC. ,  DENSO CORPORATION

Inventor： Youhei Sekiya ,  Hiroyuki Mori ,  Tomohisa Kishigami

IPC: H03K17/16 ,  H04L25/02 ,  H04B3/42 ,  H03H11/24 ,  H04L12/40

Abstract: A ringing suppressor circuit is connected to a differential signal transmission line that includes a high potential signal line and low potential signal line pair for transmitting high and low level differential signals, and includes a ringing suppressor and a stopper. When the differential signal changes to a high level, the ringing suppressor suppresses ringing by lowering the impedance between the signal lines by turning ON of a switching element. When a differential signal voltage drops below a voltage lowering determination voltage, the stopper stops the impedance lowering function of the ringing suppressor by turning OFF another switching element.

公开(公告)号：US10224925B2

公开(公告)日：2019-03-05

申请号：US15741075

申请日：2016-06-08

Applicant: DENSO CORPORATION ,  SOKEN, INC.

Inventor： Hiroyuki Mori ,  Takuya Honda ,  Tomohisa Kishigami ,  Hirofumi Isomura

IPC: H03K17/16 ,  H04L25/02 ,  H04L25/12

Abstract: A communication node is connected to a transmission line which transmits a differential signal changeable between a high level and a low level and has a high potential signal line and a low potential signal line as a pair of signal lines. The communication node includes: an inter-line potential detector that detects an intermediate potential between the pair of signal lines; a node potential detector that detects an intermediate potential of an operation power source voltage which is supplied to the communication node; and a voltage adjuster that detects a difference between the intermediate potential detected by the inter-line potential detector and the intermediate potential detected by the node potential detector, and adjusts the operation power source voltage in accordance with the difference.

公开(公告)号：US09386070B2

公开(公告)日：2016-07-05

申请号：US13706753

申请日：2012-12-06

Applicant: DENSO CORPORATION

Inventor： Yasumasa Imai ,  Tomohisa Kishigami ,  Yoshinori Takai ,  Kouji Fujiki

IPC: G06F15/16 ,  H04L29/08

CPC classification number: H04L67/02 ,  H04L67/12

Abstract: A delay system which has a communications device connected to a communications network and a relay device which is connected between the communications network ad an external device. The relay device is configured to divide data received from the external device into a plurality of data fragments each containing divided data, and send a sequence of messages, the messages corresponding to the respective divided data and dummy messages being included in the sequence of messages according to a communications rule. The communications device is configured to reconstitute the data from the external device on the basis of the message group from the relay device according to the communications rule.

Abstract translation: 具有连接到通信网络的通信设备和连接在通信网络与外部设备之间的中继设备的延迟系统。 所述中继装置被配置为将从外部设备接收的数据分割为多个数据片段，每个包含分割数据的数据片段，并且发送消息序列，对应于相应分割数据的消息和包含在消息序列中的虚拟消息根据 通信规则。 通信设备被配置为根据通信规则从中继设备基于消息组从外部设备重构数据。

公开(公告)号：US08861621B2

公开(公告)日：2014-10-14

申请号：US13973203

申请日：2013-08-22

Applicant: Denso Corporation

Inventor： Hiroyuki Mori ,  Naoki Kamikawa ,  Masayoshi Satake ,  Tomohisa Kishigami ,  Tomoyuki Koike

IPC: H04B3/00 ,  H04B1/10

CPC classification number: H04B1/10 ,  H04B3/20

Abstract: In a receiver circuit, a binary signal is generated based on a signal level of a received signal that has been received via a transmission line from a driver of a transmitter circuit. Then, a first stable state and a second stable state are detected based on a reference signal whose signal level changes in accordance with the received signal. In the first stable state, the received signal is stable at a first signal level. In the second stable state, the received signal is stable at a second signal level. When the first stable state is detected and the received signal is changed from the first signal level into the second signal level, the generated binary signal is retained at a signal level corresponding to the second signal level, until the second stable state is detected.

Abstract translation: 在接收机电路中，基于已经经由发射机电路的驱动器的传输线接收的接收信号的信号电平来生成二进制信号。 然后，基于信号电平根据接收信号而改变的参考信号来检测第一稳定状态和第二稳定状态。 在第一稳定状态下，接收信号在第一信号电平下稳定。 在第二稳定状态下，接收信号在第二信号电平下稳定。 当检测到第一稳定状态并且将接收信号从第一信号电平改变为第二信号电平时，所生成的二进制信号保持在与第二信号电平相对应的信号电平，直到检测到第二稳定状态。

公开(公告)号：US08860473B2

公开(公告)日：2014-10-14

申请号：US13712260

申请日：2012-12-12

Applicant: DENSO Corporation ,  Nippon Soken, Inc.

Inventor： Youichirou Suzuki ,  Noboru Maeda ,  Hiroyuki Obata ,  Masakiyo Horie ,  Tomohisa Kishigami

IPC: H03B1/00 ,  H04L25/02 ,  H03K17/16 ,  H03K19/003

CPC classification number: H03K17/16 ,  H03K19/00361 ,  H04L25/028

Abstract: A ringing suppression circuit for a communication circuit that performs communication through a transmission line includes a high side switch connected between a high potential reference point and a high side line of the transmission line, a low side switch connected between a low potential reference point and a low side line of the transmission line, and a ringing suppression section. The ringing suppression section turns on the high side switch based on a difference between a potential of the high side line and a potential applied to a control terminal of the high side switch. The ringing suppression section turns on the low side switch based on a difference between a potential of the low side line and a potential applied to a control terminal of the low side switch.

Abstract translation: 用于通过传输线进行通信的通信电路的振铃抑制电路包括连接在传输线的高电位参考点和高侧线之间的高侧开关，连接在低电位参考点和 传输线的低边线，以及振铃抑制部。 振铃抑制部分基于高侧线路的电位和施加到高侧开关的控制端子的电位之间的差异来接通高侧开关。 振铃抑制部分基于低侧线路的电位和施加到低侧开关的控制端子的电位之间的差来打开低侧开关。

公开(公告)号：US11533684B2

公开(公告)日：2022-12-20

申请号：US17396808

申请日：2021-08-09

Applicant: DENSO CORPORATION

Inventor： Tomoya Tokunaga ,  Tomohisa Kishigami

IPC: H04W52/02 ,  H04L12/40

Abstract: A relay device in a communication system receives a plurality of wakeup frames from one or more than one communication device connected to each bus of a plurality of buses via a corresponding port. The relay device obtains an aggregated wakeup pattern by aggregating information on an operating mode of each communication device included in the plurality of wakeup frames so as to include predetermined information to be transmitted and received and reduce the number of wakeup patterns. By using the aggregated wakeup pattern obtained by aggregating the information on the operating mode, a wakeup frame for transmission to each bus via the corresponding port is prepared.

公开(公告)号：US10601453B2

公开(公告)日：2020-03-24

申请号：US16392814

申请日：2019-04-24

Applicant: SOKEN, INC. ,  DENSO CORPORATION

Inventor： Youhei Sekiya ,  Hiroyuki Mori ,  Tomohisa Kishigami

IPC: H03D1/04 ,  H04B1/10 ,  H04B1/16 ,  H03K17/687 ,  H03K5/1252

Abstract: An electronic control unit coupled to a transmission line of a differential signal includes: a first suppression circuit suppressing a ringing effect and decreasing an impedance of the line for a first time interval when a level of the differential signal changes; a second suppression circuits suppressing a ringing effect and decreasing the impedance of the line for a second time interval when the level of the differential signal changes; and a switching unit isolating the second suppression circuit from the line when the operation power source energizes the electronic control unit, and connecting the second suppression circuit to the line when the operation power source does not energize the electronic control unit.

公开(公告)号：US10419071B2

公开(公告)日：2019-09-17

申请号：US16252793

申请日：2019-01-21

Applicant: DENSO CORPORATION

Inventor： Takuya Honda ,  Hirofumi Isomura ,  Tomohisa Kishigami

IPC: H04B3/00 ,  H04B3/42 ,  H03K19/0175 ,  H03K19/0185 ,  H04B3/02 ,  H04L25/02 ,  H03K5/1252 ,  H03K17/687

Abstract: A ringing suppression circuit is provided at a node having a communication circuit executing communication with another node by transmitting a differential signal through a pair of communication lines. The ringing suppression circuit includes: a suppressor configured to perform a suppression operation to suppress ringing occurred with a transmission of the differential signal by connecting a resistive component between the pair of communication lines; and a reference potential provider configured to provide a reference potential, which corresponds to a midpoint potential of the pair of communication lines during a steady state, to an intermediate point of the resistive component.

公开(公告)号：US10223319B2

公开(公告)日：2019-03-05

申请号：US13949490

申请日：2013-07-24

Applicant: DENSO CORPORATION

Inventor： Tetsuo Nakagawa ,  Tomohisa Kishigami

IPC: G06F11/34 ,  G06F13/42 ,  H04L12/64

Abstract: A communication load determining apparatus is used for a communication system which includes a plurality of communication devices performing communication via a common bus. The communication system operates in accordance with a communication protocol that defines which a priority order is set to each of the frames transmitted from the communication devices and which a frame having a lower priority has a longer transmission latency before being transmitted to the bus. In the communication load determining apparatus, a low-priority frame having a lower priority than other frames to the bus is transmitted, and a transmission latency of the low-priority frame is measured. The communication load determining apparatus determines whether or not abnormality has occurred in a communication load in the bus on the basis of the measured transmission latency to produce a determination result. The produced determination result is stored.