Managing activation time of slave ECUs in sleep state with a management table when ignition is turned off
US11914444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2022 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Apr 25, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/40273
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An in-vehicle electronic system comprises a core ECU (Electronic Control Unit) mounted in a vehicle and a plurality of slave ECUs that is capable of communicating with the core ECU through an in-vehicle communication network, wherein the core ECU is configured to manage a current time while a main power source of the vehicle is in an off state and manage an activation time of each of the plurality of slave ECUs in a sleep state with a management table while the main power source is in an off state, wherein the core ECU is configured to send an activation signal to each slave ECU through the in-vehicle communication network when the current time becomes the activation time of each of the plurality of slave ECUs while the main power source is in an off state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.