US 12,436,688 B2
In-vehicle electronic device and life prediction method for nonvolatile memory
Tomoyuki Kataishi, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 18/719,134
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Dec. 14, 2021, PCT No. PCT/JP2021/045984
§ 371(c)(1), (2) Date Jun. 12, 2024,
PCT Pub. No. WO2023/112126, PCT Pub. Date Jun. 22, 2023.
Prior Publication US 2025/0053315 A1, Feb. 13, 2025
Int. Cl. G06F 12/00 (2006.01); G06F 3/06 (2006.01)
CPC G06F 3/0619 (2013.01) [G06F 3/0653 (2013.01); G06F 3/0679 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An in-vehicle electronic device mounted on a vehicle, the in-vehicle electronic device comprising:
a processing controller that processes information handled by the in-vehicle electronic device or controls the in-vehicle electronic device;
a memory having a plurality of writing areas;
a temperature sensor; and
a remaining warranty period calculation unit that calculates a remaining warranty period of the memory based on an output from the temperature sensor, wherein the remaining warranty period calculation unit switches between a first determination method for obtaining the remaining warranty period using a first temperature coefficient determined regardless of a distance between the memory and each of a plurality of the temperature sensors and a second determination method for obtaining the remaining warranty period using a second temperature coefficient determined in accordance with the distance between the memory and each of the plurality of the temperature sensors in accordance with a time from activation of the in-vehicle electronic device to obtain the remaining warranty period.