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公开(公告)号：US20250116710A1
公开(公告)日：2025-04-10
申请号：US18983994
申请日：2024-12-17
Applicant: DENSO CORPORATION
Inventor： Yuto HONDA , Sho MATSUMOTO , Ryu ATSUTA , Tomohisa KISHIGAMI , Youichi HAYASE , Kohki OHBA
IPC: G01R31/371 , B60L58/12 , B60L58/16 , B60L58/18 , G01R31/382
Abstract: A battery controller is equipped with a primary antenna used in radio communication between itself and battery monitors. Each of the battery monitors is equipped with a secondary antenna used in radio communication between itself and the battery controller. Each of the secondary antennas and/or the primary antenna is configured to selectively have a first antenna directivity that is one of a plurality of directivities whose center axes are different in orientation from each other. The first antenna directivity excludes one of the directivities which causes a degree of quality of radio communication between the primary antenna and a corresponding one of the secondary antennas to be minimized or the lowest among the directivities on a channel used for the radio communication.
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公开(公告)号：US20250103115A1
公开(公告)日：2025-03-27
申请号：US18895461
申请日：2024-09-25
Applicant: DENSO CORPORATION
Inventor： Ryota KAMEOKA , Tomohisa KISHIGAMI , Tomoya TOKUNAGA , Akira TADA
Abstract: A communication system includes a slave control device that receives a power supply from a power source via a first power supply switching section, a first power supply switching control section configured to receive a power supply from the power source via a second power supply switching section and control an operation of the first power supply switching section, a second power supply switching control section configured to control an operation of the second power supply switching section, a switching transmission section configured to transmit first switching instruction information indicating whether to bring the first power supply switching section into the first conduction state to the first power supply switching control section; and a power supply control section configured to bring the second power supply switching section into either the second conduction state or the second cutoff state based on the management frame.
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公开(公告)号：US20220141051A1
公开(公告)日：2022-05-05
申请号：US17510491
申请日：2021-10-26
Applicant: DENSO CORPORATION
Inventor： Hisashi MIYOSHI , Tomohisa KISHIGAMI
Abstract: A relay device relays a management frame between nodes connected to mutually different communication buses. The relay device includes (i) communicator units provided respectively to correspond to the communication buses, and (ii) communication controller units provided respectively to correspond to the communicator units. The communication controller unit respectively includes a corresponding transmission buffer configured to store the management frame, which is to be transmitted from the communicator unit corresponding to the communication controller unit. In response to determining that the management frame is retained in the transmission buffer corresponding to the communication controller unit, the communication controller unit transmits the management frame, which is received at a present time and stored in the transmission buffer, from the communicator unit corresponding to the communication controller unit.
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公开(公告)号：US20200287579A1
公开(公告)日：2020-09-10
申请号：US16878673
申请日：2020-05-20
Applicant: DENSO CORPORATION
Inventor： Takuya HONDA , Tomohisa KISHIGAMI
Abstract: A control unit of a suppression circuit turns on an inter-line switching element and maintains an ON state upon detection of a change in the level of a differential signal from high level to low level, and cancels the ON state after a predetermined period of time is measured. A continuous activation prevention unit sets a predetermined mask time period from the time of turning on the inter-line switching element, and masking is performed to prevent the control unit from detecting a change in the level of the differential signal from the high level to the low during the mask time period.
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公开(公告)号：US20190179390A1
公开(公告)日：2019-06-13
申请号：US16211337
申请日：2018-12-06
Applicant: DENSO CORPORATION
Inventor： Kunimitsu HANDA , Tomohisa KISHIGAMI
IPC: G06F1/26 , H04L12/10 , H04L12/12 , G06F1/3234
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.
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Patent Agency Ranking
公开(公告)号：US20180367127A1
公开(公告)日：2018-12-20
申请号：US15748749
申请日：2016-08-25
Applicant: DENSO CORPORATION , SOKEN, INC.
Inventor： Takuya HONDA , Hirofumi ISOMURA , Tomohisa KISHIGAMI , Hiroyuki MORI , Yasuhiro MORI , Yuki HORII
IPC: H03K5/1252 , H03K3/037 , H04B3/20
Abstract: A ringing suppression circuit, which is connected to a transmission line for transmitting a differential signal changeable between a high level and a low level in a binary level through a pair of a high potential side signal line and a low potential side signal line, and suppresses ringing that occurs in association with transmission of the differential signal, includes: an inter-line switching element that is connected to the pair of the high potential side signal line and the low potential side signal line; and a control unit that turns on the inter-line switching element and fixes an on state when detecting that the differential signal changes from the high level to the low level, and releases the on state after a predetermined time is measured and elapsed.
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公开(公告)号：US20180041361A1
公开(公告)日：2018-02-08
申请号：US15662535
申请日：2017-07-28
Applicant: DENSO CORPORATION
Inventor： Tomohisa KISHIGAMI , Shuichi NAKAMURA
CPC classification number: H04L12/4625 , H03F3/24 , H04B3/542 , H04B3/548 , H04B2203/5408 , H04B2203/547 , H04J3/22 , H04L12/40045 , H04L25/0272 , H04L2012/40215
Abstract: A transmission circuit includes a first transmitter and a second transmitter. The first transmitter turns OFF first transistors when a transmission data is in a high level, and turns ON the first transistors when the transmission data is in a low level. When a permission signal is in the high level, the second transmitter turns ON the second transistors when the transmission data is in the high level, and turns OFF the second transistors when the transmission data is in the low level. Diodes are set to suppress an amplitude of a differential signal in an ON time of the second transistors more than an amplitude of a differential signal in an ON time of the first transistors, to suppress ringing and radiation noise.
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公开(公告)号：US20250123668A1
公开(公告)日：2025-04-17
申请号：US18910026
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 switch. The second controller includes a current detection unit, a management frame obtaining unit, a state comparing unit, and a diagnostic process executing unit. The current detection unit detects a consumed current value by the first controller. The management frame obtaining unit obtains a management frame including activation information of the first controller. The state comparing unit determines whether a first state based on the consumed current value and a second state based on the activation information of the first controller are inconsistent with each other. The diagnostic process executing unit performs, when the first state and the second state are inconsistent with each other, at least one of (i) storing diagnostic information and (ii) transmitting a notification of the diagnostic information.
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公开(公告)号：US20250112817A1
公开(公告)日：2025-04-03
申请号：US18894579
申请日：2024-09-24
Applicant: DENSO CORPORATION
Inventor： Taku INAGAWA , Tomohisa KISHIGAMI , Manahiro MORITA
IPC: H04L41/0631 , H04L41/0604 , H04L43/50
Abstract: A communication system comprises a plurality of communication nodes that relay failure diagnosis communication of a diagnosis request and a diagnosis result between a request source of a failure diagnosis and a request destination of the failure diagnosis. At least one of the communication nodes is configured to determine whether current communication is the failure diagnosis communication, and to pack a first communication frame of a first communication protocol whose use is defined in a communication standard of the failure diagnosis into a second communication frame of a second communication protocol having a higher communication speed than the first communication protocol.
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公开(公告)号：US20250106065A1
公开(公告)日：2025-03-27
申请号：US18895474
申请日：2024-09-25
Applicant: DENSO CORPORATION
Inventor： Ryota KAMEOKA , Tomohisa KISHIGAMI , Tomoya TOKUNAGA , Akira TADA
IPC: H04L12/40 , G06F1/3296 , G07C5/08
Abstract: A communication system includes a first control device that receives a power supply from a power source via a power supply switching section configured to switch between a conduction state and a cutoff state and a second control device that is data-communicably connected to the first control device and controls an operation of the power supply switching section. The second control device includes a state confirmation section that determines whether the first control device is in a cutoff-allowable state and a power supply control section that brings the power supply switching section into the cutoff state when the state confirmation section determines that the first control device is in the cutoff-allowable state.
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