-
公开(公告)号：US20150286272A1
公开(公告)日：2015-10-08
申请号：US14661046
申请日：2015-03-18
Applicant: DENSO CORPORATION
Inventor： Tomohisa KISHIGAMI
IPC: G06F1/32
CPC classification number: G06F1/3287 , G06F1/3212 , G06F1/3246 , Y02D10/171 , Y02D10/174
Abstract: A communication system operating with a battery is provided. Each node of the system is operable in a sleep mode and a normal mode, outputs a transition availability notice frame indicating whether or not the node is permitted or prohibited to transition to the sleep mode. At least one node is a monitor node. Upon receipt of a transition availability notice frame indicating prohibition of transition to the sleep mode while the battery is in a low voltage state, the monitor node stores sender information in a non-volatile memory, the sender information identifying what node is a sender node sending this transition availability notice frame.
Abstract translation: 提供使用电池操作的通信系统。 系统的每个节点在睡眠模式和正常模式下都可操作，输出指示节点是否被允许或禁止转换到睡眠模式的转换可用性通知帧。 至少一个节点是监视节点。 当电池处于低电压状态时，当接收到指示禁止转换到睡眠模式的转换可用性通知帧时，监视节点将发送者信息存储在非易失性存储器中，发送者信息标识哪个节点是发送方节点发送 此转换可用性通知框架。
-
公开(公告)号：US20150055696A1
公开(公告)日：2015-02-26
申请号：US14467203
申请日：2014-08-25
Applicant: DENSO CORPORATION
Inventor： Hideki KASHIMA , Tomohisa KISHIGAMI
CPC classification number: H04L25/4902 , H04B3/542 , H04B3/548 , H04B14/026
Abstract: A communication system performs communication using a pulse width modulation code as a transmission code. The communication system includes a plurality of nodes that are connected via a transmission line to be capable of communicating with each other. Each of the nodes including a driver circuit. The driver circuit includes a transistor that enables and blocks conduction between the transmission line and a ground line. The plurality of nodes includes a master node and a slave node. The master node is one of the plurality of nodes. The slave node is at least one node other than the master node among the plurality of nodes. The master node includes a limiter that restricts, when the transistor of the driver circuit is turned off, changes in a conductive state of the transistor.
Abstract translation: 通信系统使用脉宽调制码作为发送码进行通信。 通信系统包括通过传输线连接以能够彼此通信的多个节点。 每个节点包括一个驱动电路。 驱动器电路包括一个能够和阻止传输线与接地线之间的导通的晶体管。 多个节点包括主节点和从节点。 主节点是多个节点之一。 从节点是多个节点之中的至少一个节点，而不是主节点。 主节点包括限制器，其限制当驱动器电路的晶体管截止时，晶体管的导通状态发生变化。
-
公开(公告)号：US20140355622A1
公开(公告)日：2014-12-04
申请号：US14287406
申请日：2014-05-27
Applicant: DENSO CORPORATION
Inventor： Tomohisa KISHIGAMI
IPC: H04L12/413
CPC classification number: H04L12/413 , H04L12/403
Abstract: A communication system is provide which includes a plurality of communication units connected to a communication line, in which collisions occur between dominant signals outputted from the communication units on the communication line. At least one of the communication units includes a first driver which is set so that a variation of voltage applied to the communication line in transmission of the dominant signal with respect to that in absence of transmission of the dominant signal is smaller than a variation of voltage applied from another of the communication units to the communication line in transmission of the dominant signal. One of the communication units, which differs from the communication unit including the first driver, includes a second driver which limits variation per unit time of current flowing through the communication line in transmission of the dominant signal.
Abstract translation: 提供一种通信系统，其包括连接到通信线路的多个通信单元，其中在通信线路上从通信单元输出的主要信号之间发生冲突。 通信单元中的至少一个包括第一驱动器，其被设置为使得在主导信号的传输中施加到通信线路的电压相对于在不发送主导信号的情况下的电压变化小于电压的变化 从另一个通信单元应用于通信线路中的主导信号的传输。 与包括第一驱动器的通信单元不同的通信单元之一包括第二驱动器，其限制在主导信号的传输中流经通信线路的电流的每单位时间的变化。
-
公开(公告)号：US20250123663A1
公开(公告)日：2025-04-17
申请号：US18910041
申请日：2024-10-09
Applicant: DENSO CORPORATION
Inventor： Akira TADA , Tomohisa KISHIGAMI , Tomoya TOKUNAGA , Ryota KAMEOKA , Yukihiro YAMAKAWA
Abstract: A communication system includes interconnected multiple electronic controllers. At least one thereof is a multiple-circuits controller including a first electronic circuit device, a second electronic circuit device, a first power switch, a second power switch, a management frame exchange unit, and a power supply control unit. The first power switch switches between a first connected state and a first disconnected state. The second power switch switches between a second connected state and a second disconnected state. The management frame exchange unit exchanges a management frame including first switching information and second switching information. The power supply control unit switches the first power switch between the first connected state and the first disconnected state according to the first switching information and switches the second power switch between the second connected state and the second disconnected state according to the second switching information.
-
公开(公告)号：US20250074340A1
公开(公告)日：2025-03-06
申请号：US18815915
申请日：2024-08-27
Applicant: DENSO CORPORATION
Inventor： Tomoya TOKUNAGA , Akira TADA , Ryota KAMEOKA , Tomohisa KISHIGAMI , Yuta KAWAMURA
IPC: B60R16/023 , G07C5/08
Abstract: A first device receives an electric power from a battery via an electronic fuse. A second device is connected to the first device to transmit and receive a frame. A third device controls the operation of the electronic fuse. The first and second devices store a diagnosis mask table. The diagnosis mask table defines, for each of communication groups, one or more combinations of a device whose electric power supply via the electronic fuse is cut off, a device which enters a sleep state, and a communication frame that is not received. The third device determines an activation group based on acquired activation trigger information. The third device transmits the communication frame indicating the determined activation group to the first and second devices.
-
Patent Agency Ranking
公开(公告)号：US20230388945A1
公开(公告)日：2023-11-30
申请号：US18321931
申请日：2023-05-23
Applicant: DENSO CORPORATION
Inventor： Sho MATSUMOTO , Youichi HAYASE , Tomohisa KISHIGAMI , Yuto HONDA , Ryu ATSUTA
CPC classification number: H04W56/0005 , H04W64/003 , H04W56/003
Abstract: A communication system includes a master communication device and slave communication devices. The master communication device obtains information indicative of communication characteristics. The communication system records a combination of the master communication device and at least one of the slave communication devices having a communication abnormality. The system finalizes an abnormal position where the abnormality is occurring when an abnormality-determined position is consistent with a recorded combination of the master communication device and the at least one of the slave communication devices having a communication abnormality.
-
公开(公告)号：US20200067546A1
公开(公告)日：2020-02-27
申请号：US16392814
申请日：2019-04-24
Applicant: SOKEN, INC. , DENSO CORPORATION
Inventor： Youhei SEKIYA , Hiroyuki MORI , Tomohisa KISHIGAMI
IPC: H04B1/10 , H03K5/1252 , H03K17/687 , H04B1/16
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：US20190288680A1
公开(公告)日：2019-09-19
申请号：US16273810
申请日：2019-02-12
Applicant: SOKEN, INC. , DENSO CORPORATION
Inventor： Youhei SEKIYA , Hiroyuki MORI , Tomohisa KISHIGAMI
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：US20190190516A1
公开(公告)日：2019-06-20
申请号：US16099711
申请日：2017-08-04
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Hiroyuki MORI , Takuya HONDA , Tomohisa KISHIGAMI , Hirofumi ISOMURA
CPC classification number: H03K17/16 , H04L25/026 , H04L25/028 , H04L25/0288
Abstract: A ringing suppression circuit connected to a transmission line to suppress ringing caused by the transmission line transmitting a differential signal using a pair of signal lines, the differential signal varying between a high level and a low level, the pair of signal lines including a high potential signal line and a low potential signal line, the ringing suppression circuit including: an inter-line switching element that is connected between the pair of signal lines; a control portion that performs a ringing suppression operation in response to detecting a level change in the differential signal, wherein the ringing suppression operation turns on the inter-line switching element to decrease an impedance between the pair of signal lines; and a suppression operation prohibiting portion that prohibits the control portion from performing the ringing suppression operation in response to detecting a signal caused by a signal on the transmission line.
-
公开(公告)号：US20170270291A1
公开(公告)日：2017-09-21
申请号：US15459444
申请日：2017-03-15
Applicant: DENSO CORPORATION
Inventor： Hiroki SUZUKI , Tomohisa KISHIGAMI
CPC classification number: G06F21/51 , B60Q9/00 , G06F21/575 , G06F2221/033
Abstract: An information processing system made up of a plurality of controllers in a vehicle has a tamperproof configuration by including, in a specific controller among the plurality of controllers: a starter putting the specific controller among the plurality of controllers in a executable state which enables the specific controller among the plurality of controllers to execute a preset program; a determiner determining, before the specific controller among the plurality of controllers is put in the executable state, whether software that is memorized in a preset memory area and at least includes the preset program is tampered; and an outputter outputting, to one of processing devices outside the vehicle. In such manner, the tampering of the software is quickly detectable while preventing an increase of communication load of a communication network and/or the information processing system.
-
-
-
-
-
-
-
-
-
Search Results
41
records
(took 0.017 seconds)
