In-vehicle apparatus, information processing method, and program

Patent metadata

Field	Value
Publication number	US-12565145-B2
Application number	US-202218569143-A
Country	US
Kind code	B2
Filing date	May 25, 2022
Priority date	Jun 15, 2021
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

An in-vehicle apparatus according to the present disclosure is an in-vehicle apparatus that is mounted in a vehicle and connected to another in-vehicle apparatus to be capable of communicating with the other in-vehicle apparatus via an in-vehicle network, the in-vehicle apparatus including: a control unit that controls communication with the other in-vehicle apparatus. When the control unit causes the in-vehicle apparatus to transition from a normal state to a sleep state, the control unit generates a notification message that is defined by AUTOSAR by including, in the notification message, a deactivation flag for causing the other in-vehicle apparatus to deactivate disconnection detection, and outputs the generated notification message.

First claim

The invention claimed is:

1 . An in-vehicle apparatus that is mounted in a vehicle and connected to another in-vehicle apparatus so as to be capable of communicating with the other in-vehicle apparatus via an in-vehicle network, the in-vehicle apparatus comprising:
a control unit that controls communication with the other in-vehicle apparatus, wherein, when the control unit causes the in-vehicle apparatus to transition from a normal state to a sleep state, the control unit generates a notification message that is defined by AUTOSAR by including, in the notification message, a deactivation flag for causing the other in-vehicle apparatus to deactivate disconnection detection, and outputs the generated notification message, wherein, when the control unit causes the in-vehicle apparatus to transition from the normal state to the sleep state, the control unit determines a sleep classification that indicates a classification of the sleep state, generates the notification message that includes the deactivation flag corresponding to the determined sleep classification, and outputs the notification message to cause the other in-vehicle apparatus to deactivate disconnection detection, the sleep classification being based on at least one of the following: a length of a sleep timer period, a type of domain of the in-vehicle apparatuses are subjected to simultaneous sleep, and a power saving mode during the sleep state.

2 . The in-vehicle apparatus according to claim 1 ,
wherein the notification message is regularly transmitted and received between the in-vehicle apparatus and the other in-vehicle apparatus, and when the in-vehicle apparatus stays in the normal state, the control unit generates the notification message without including the deactivation flag in the notification message, and outputs the generated notification message.

3 . The in-vehicle apparatus according to claim 1 , wherein, when the control unit causes the in-vehicle apparatus to transition from the normal state to the sleep state, the control unit generates the notification message by including, in the notification message, an activation flag for causing the other in-vehicle apparatus to activate disconnection detection, and outputs the generated notification message.

4 . The in-vehicle apparatus according to claim 1 ,
wherein the in-vehicle network uses CAN, LIN, FlexRay, or TCP/IP as a communication protocol, and the control unit outputs the notification message through broadcasting.

5 . The in-vehicle apparatus according to claim 1 , wherein, when the control unit causes the in-vehicle apparatus to transition from the normal state to the sleep state, the control unit determines a sleep condition for causing the in-vehicle apparatus to transition to the sleep state, generates the notification message that includes the deactivation flag corresponding to the determined sleep condition and the sleep classification, and outputs the notification message to cause the other in-vehicle apparatus to deactivate disconnection detection.

6 . An information processing method for causing a computer that is mounted in a vehicle and connected to another computer so as to be capable of communicating with the other computer via an in-vehicle network to execute processing operations of:
when the computer is caused to transition from a normal state to a sleep state, generating a notification message that is defined by AUTOSAR by including, in the notification message, a deactivation flag for causing the other computer to deactivate disconnection detection; and outputting the generated notification message, wherein the notification message includes a deactivation flag for causing the other in-vehicle apparatus to deactivate disconnection detection, the deactivation flag based on a sleep classification that indicates a classification of the sleep state, the sleep classification being based on at least one of the following: a length of a sleep timer period, a type of domain of the in-vehicle apparatuses are subjected to simultaneous sleep, and a power saving mode during the sleep state.

7 . A computer program product for causing a computer that is mounted in a vehicle and connected to another computer so as to be capable of communicating with the other computer via an in-vehicle network, the computer program product comprising a non-transitory, machine-readable medium storing instructions which, when executed by at least one programmable processor, causes at least one programmable processor to perform operations comprising:
when the computer is caused to transition from a normal state to a sleep state, generating a notification message that is defined by AUTOSAR by including, in the notification message, a deactivation flag for causing the other computer to deactivate disconnection detection; and outputting the generated notification message, wherein the notification message includes a deactivation flag for causing the other in-vehicle apparatus to deactivate disconnection detection, the deactivation flag based on a sleep classification that indicates a classification of the sleep state, the sleep classification being based on at least one of the following: a length of a sleep timer period, a type of domain of the in-vehicle apparatuses are subjected to simultaneous sleep, and a power saving mode during the sleep state.

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries

Inventors

• Otsu Tomohiro
• Hagihara Takeshi
• Urayama Hirofumi
• Maeda Hideki
• Go Darmawan
• Kikuchi Yoshitaka

Classifications

• B60R16/0231 Primary

  Circuits relating to the driving or the functioning of the vehicle (monitoring tyres B60C23/00; indicating overspeed B60K31/00; for dash boards B60K37/00, B60Q3/10; for indicating emergencies B60Q1/52; brake control systems B60T; registering or indicating the working of vehicles G07C5/00; measuring distance G01C, e.g. combinations of speed and distance G01C23/00; engine indicators G01L; measuring speed or acceleration G01P) · CPC title

• B60Q9/00 Primary

  Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00 {, e.g. haptic signalling} · CPC title

• B60R16/023

  for transmission of signals between vehicle parts or subsystems · CPC title

• H04L12/28

  characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks] (wireless communication networks H04W {; arrangements for dividing the transmission path H04W40/00}) · CPC title

• B60R16/02

  electric {constitutive elements} · CPC title