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公开(公告)号：US20150295738A1
公开(公告)日：2015-10-15
申请号：US14669093
申请日：2015-03-26
Applicant: DENSO CORPORATION , NIPPON SOKEN, INC.
Inventor： Hiroyuki MORI , Keiji SHIGEOKA , Hideki KASHIMA , Tomohisa KISHIGAMI
CPC classification number: H04L25/4902 , H04B3/54
Abstract: Each of nodes in a communication system includes a pull-up circuit connected between a power source and a transmission line and a switching portion connecting and disconnecting the transmission line and a ground line. One of the nodes is a master node, and the others of the nodes are slave nodes. The driver circuits are driven so that the master node constantly outputs the transmission code of logic 1 and the slave node outputting the transmission code of logic 0 extends the width of the low level of the transmission code of logic 1 on the transmission line. The master node further includes a current limiting section limiting an electric current that flows to the transmission line via the pull-up circuit based on at least a signal level of the transmission line.
Abstract translation: 通信系统中的每个节点包括连接在电源和传输线之间的上拉电路以及连接和断开传输线和接地线的切换部分。 其中一个节点是主节点，其他节点是从节点。 驱动电路被驱动，使得主节点不断输出逻辑1的发送代码，并且输出逻辑0的发送代码的从节点在传输线上扩展逻辑1的发送代码的低电平的宽度。 主节点还包括电流限制部分，其基于至少传输线的信号电平，限制经由上拉电路流到传输线的电流。
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公开(公告)号：US20250125652A1
公开(公告)日：2025-04-17
申请号：US18910032
申请日：2024-10-09
Applicant: DENSO CORPORATION
Inventor： Akira TADA , Tomohisa KISHIGAMI , Tomoya TOKUNAGA , Ryota KAMEOKA , Taku INAGAWA
Abstract: A communication system includes a first controller and a second controller connected to each other. The first controller receives electric power from a power source through a power switch. The second controller includes a current detection unit, the management frame obtaining unit, the disconnection determination unit, and the power supply disconnection unit. The current detection unit detects a consumed current value of the first controller. The management frame obtaining unit obtains a management frame including activation information of the first controller. The disconnection determination unit determines, based on the consumed current value and the activation information, whether a predetermined disconnection condition is met. The power supply disconnection unit switches the power switch to a disconnected state when the disconnection determination unit determines that the disconnection condition is met.
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公开(公告)号：US20250112284A1
公开(公告)日：2025-04-03
申请号：US18978646
申请日：2024-12-12
Applicant: DENSO CORPORATION
Inventor： Yuto HONDA , Sho MATSUMOTO , Yoshimitsu INOUE , Hideki MORISHIMA , Kohki OHBA , Ryu ATSUTA , Tomohisa KISHIGAMI , Youichi HAYASE
IPC: H01M10/42 , G01R31/371 , G01R31/382
Abstract: A battery control device includes a parent-device-side storage unit, a parent-device-side communication unit and an identification unit. The parent-device-side storage unit is configured to store parameters related to communication quality of wireless communication between the battery monitoring devices and the battery control device when batteries, battery monitoring devices and the battery control device are arranged in a predetermined arrangement state in an accommodation section; the parameters are associated respectively with the battery monitoring devices. The parent-device-side communication unit is configured to perform the wireless communication with the battery monitoring devices. The identification unit is configured to identify, based on radio signals received from the battery monitoring devices by the parent-device-side communication unit and the parameters stored in the parent-device-side storage unit, the batteries monitored respectively by the battery monitoring devices that are respectively transmission sources of the received radio signals.
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公开(公告)号：US20250103118A1
公开(公告)日：2025-03-27
申请号：US18895451
申请日：2024-09-25
Applicant: DENSO CORPORATION
Inventor： Ryota KAMEOKA , Tomohisa KISHIGAMI , Tomoya TOKUNAGA , Akira TADA
Abstract: A communication system includes a plurality of electronic control devices connected to be capable of transmitting and receiving a communication frame. The electronic control devices includes a power supply switching device configured to receive a power supply from a power source via a power supply switching section and a management device connected to the electronic control devices to be capable of transmitting and receiving a communication frame, and is configured to control an operation of one or a plurality of power supply switching sections. At least one of the electronic control devices includes a frame generation section configured to generate a management frame that is a communication frame and a frame transmission section configured to transmit the management frame.
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公开(公告)号：US20220070774A1
公开(公告)日：2022-03-03
申请号：US17396808
申请日：2021-08-09
Applicant: DENSO CORPORATION
Inventor： Tomoya TOKUNAGA , Tomohisa KISHIGAMI
IPC: H04W52/02
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.
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Patent Agency Ranking
公开(公告)号：US20210258186A1
公开(公告)日：2021-08-19
申请号：US17172221
申请日：2021-02-10
Applicant: DENSO CORPORATION
Inventor： Tomoya TOKUNAGA , Tomohisa KISHIGAMI
Abstract: A communication system, in which a plurality of nodes communicate with each other according to a communication protocol, which wakes up some of the plurality of nodes when a communication frame containing specific start information occurs on or is transmitted to the communication bus, includes a master node determines, for each of slave nodes, a start condition, which is a condition for transition of a subject node from a sleep state to a normal state. The master node transmits, to the communication bus, the determined start condition tailored for each of the slave nodes for a reception thereof by each of the slave nodes.
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公开(公告)号：US20190158144A1
公开(公告)日：2019-05-23
申请号：US16252805
申请日：2019-01-21
Applicant: DENSO CORPORATION
Inventor： Takuya HONDA , Hirofumi ISOMURA , Tomohisa KISHIGAMI
IPC: H04B3/42 , H03K5/1252
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 an adjustment circuit between the pair of communication lines. The adjustment circuit includes a resistive component and a capacitive component connected in series.
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公开(公告)号：US20180248542A1
公开(公告)日：2018-08-30
申请号：US15753596
申请日：2016-08-25
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Hiroyuki MORI , Takuya HONDA , Tomohisa KISHIGAMI , Hirofumi ISOMURA
IPC: H03K5/1252 , H03K17/687 , H04B3/42
CPC classification number: H03K5/1252 , H03K5/08 , H03K17/163 , H03K17/687 , H03K19/00346 , H04B3/42
Abstract: A ringing suppression circuit includes: a single line switching element, which is driven by a voltage, that is connected between a pair of signal lines; a controller that detects a change in a level of the differential signal and turns on the single line switching element to lower an impedance between the pair of signal lines; a period detector that detects a length of a suppressing period indicated by a setting signal, which is an input; and a suppressing period storage that stores the length of the suppressing period which is detected by the period detector. In addition, the pair of signal lines includes a high potential signal line and a low potential signal line. Moreover, the controller turns on the single line switching element for only the suppressing period having the length, which is stored in the suppressing period storage.
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公开(公告)号：US20180198443A1
公开(公告)日：2018-07-12
申请号：US15741075
申请日：2016-06-08
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Hiroyuki MORI , Takuya HONDA , Tomohisa KISHIGAMI , Hirofumi ISOMURA
CPC classification number: H03K17/164 , H01L2924/13091 , H04L25/02 , H04L25/026 , 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.
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公开(公告)号：US20160365881A1
公开(公告)日：2016-12-15
申请号：US15160133
申请日：2016-05-20
Applicant: DENSO CORPORATION
Inventor： Tomohisa KISHIGAMI
CPC classification number: H04B1/0475 , H03H11/245 , H03K5/24 , H04B1/40
Abstract: An electronic device includes a transceiver connected to a differential signal transmission line for transmitting a differential signal through a pair of signal lines to communicate with one or a plurality of other devices connected to the differential signal transmission line. The electronic device includes: a suppression circuit that is operated by a power source voltage to suppress waveform distortion in the differential signal transmitted through the differential signal transmission line; and a power source controller that controls supply or cutoff of the power source voltage to the suppression circuit in response to a change in a differential voltage between the pair of signal lines.
Abstract translation: 电子设备包括连接到差分信号传输线的收发器，用于通过一对信号线发送差分信号，以与连接到差分信号传输线的一个或多个其他设备进行通信。 电子设备包括：抑制电路，其由电源电压操作，以抑制通过差分信号传输线传输的差分信号中的波形失真; 以及电源控制器，其响应于所述一对信号线之间的差分电压的变化而控制向所述抑制电路的电源电压的供应或截止。
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