US 12,008,354 B2
Update method of map data and map information system
Hidetoshi Chikamori, Saitama (JP); Kazumasa Nakamura, Saitama (JP); Hitoshi Konishi, Saitama (JP); Takuji Harayama, Saitama (JP); Tomoaki Masakawa, Tokyo (JP); Naofumi Aso, Saitama (JP); Ryo Matsuzawa, Tokyo (JP); and Zhaoqi Wang, Tokyo (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Jan. 7, 2022, as Appl. No. 17/571,034.
Claims priority of application No. 2021-002920 (JP), filed on Jan. 12, 2021.
Prior Publication US 2022/0222060 A1, Jul. 14, 2022
Int. Cl. G06F 9/445 (2018.01); G06F 8/65 (2018.01)
CPC G06F 8/65 (2013.01) 6 Claims
OG exemplary drawing
 
1. An update method of map data executed by a map information system provided in a vehicle, wherein
the map data includes multiple pieces of block data separated so as to correspond to blocks on a map and stored in a storage device of the map information system, and
wherein the map information system
decides priority orders of pieces of block data to be updated based on at least one of a position of an own vehicle, a route to a destination, and a passage history,
communicates with a map server having a latest version of the map data and downloads update data of the pieces of block data to be updated from the map server in accordance with the priority order,
updates the pieces of block data stored in the storage device based on the downloaded update data, and
when, during download of a piece of block data, a corresponding block does not include the route to the destination and is positioned behind the own vehicle with respect to the direction of the own vehicle, the map information system cancels the download of the piece of block data that is being downloaded, the corresponding block being a block corresponding to the update data that is being downloaded.