In-vehicle electronic system, vehicle, control method, and computer readable storage medium

A control method executed, in an in-vehicle electronic system mounted to a vehicle, by a first electronic control unit (ECU) that is a slave ECU connected to a core ECU and directly connected to one or more sensors used to determine a security state of the vehicle and an alarm apparatus configured to issue an alarm when the security state is abnormal without intermediation of any ECU, the control method comprising:

• determining a security state based on at least information received from the one or more sensors;
• and
• causing the alarm apparatus to operate when the security state is determined to be abnormal, wherein
• the one or more sensors are at least one of a door switch to output a signal indicating an open-close state of a door of the vehicle or a hood switch to output a signal indicating an open-close state of an engine hood of the vehicle, and
• the first ECU is further connected to other slave ECUs and provided between the core ECU and the other slave ECUs, and has a gateway function for relaying communication between the core ECU and the other slave ECUs.

A non-transitory computer readable storage medium having stored thereon a program for causing, when executed, in an in-vehicle electronic system mounted to a vehicle, b a computer included in a first electronic control unit (ECU) that is a slave ECU connected to a core ECU and directly connected to one or more sensors used to determine a security state of the vehicle and an alarm apparatus configured to issue an alarm when the security state is abnormal without intermediation of any ECU, the computer to execute:

• determining a security state based on at least information received from the one or more sensors;
• and
• causing the alarm apparatus to operate when the security state is determined to be abnormal, wherein
• the one or more sensors are at least one of a door switch to output a signal indicating an open-close state of a door of the vehicle or a hood switch to output a signal indicating an open-close state of an engine hood of the vehicle, and
• the first ECU is further connected to other slave ECUs and provided between the core ECU and the other slave ECUs, and has a gateway function for relaying communication between the core ECU and the other slave ECUs.