Patent ID: 11933629
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. A computer-readable non-transitory storage medium that stores a computer program for location estimation, wherein the computer program causes a processor
to store map data received from a server through the communication unit before the vehicle has begun to travel in the memory as initial map data,
to send a request to the server through the communication unit for update information representing information updated from the initial map data for each of a plurality of road zones within a scheduled route, from among the information associated with the road zones in the map data updated at the server, after the vehicle has begun to travel along the scheduled route, and
to use the updated information received through the communication unit to update the initial map data;
wherein the map data comprises:
first layer data comprising static information, the computer program causing the processor to update the first layer data at a first interval;
second layer data comprising semi-static information, the computer program causing the processor to update the second layer data at a second interval that is shorter than the first interval;
third layer data comprising semi-dynamic information, the computer program causing the processor to update the third layer data at a third interview that is shorter than the second interval; and
fourth layer data comprising dynamic information, the computer program causing the processor to update the fourth layer data at a fourth interval that is shorter than the third interval;
wherein the computer program causes the processor to generate the request such that the request includes a request for different layer data selected among the first to fourth layer data based on a time until the vehicle reaches a next road zone or a destination.