公开(公告)号：US20250106098A1

公开(公告)日：2025-03-27

申请号：US18894483

申请日：2024-09-24

Applicant: DENSO CORPORATION

Inventor： Manahiro MORITA ,  Tomohisa KISHIGAMI ,  Taku INAGAWA

IPC: H04L41/0686 ,  G07C5/08 ,  H04L12/40 ,  H04L12/407 ,  H04L41/0681

Abstract: A communication system includes a plurality of communication nodes that relay fault diagnosis communication of a diagnosis request and q diagnosis result between a request source and a request destination of the fault diagnosis. A communication setting unit of one of the communication nodes increases a priority of a priority parameter indicating the priority of communication when a communication determination unit determines that the present communication is the fault diagnosis communication either when transmitting the diagnosis request or when transmitting the diagnosis result.

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

IPC: H02J13/00 ,  B60R16/03

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.

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

IPC: G06F1/28 ,  G06F11/32

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.

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.