Geographic space management

Patent metadata

Field	Value
Publication number	US-2016371323-A1
Application number	US-201514800821-A
Country	US
Kind code	A1
Filing date	Jul 16, 2015
Priority date	Jun 19, 2015
Publication date	Dec 22, 2016
Grant date	—

Abstract

A system is provided that manages a geographic space including a route on which a moving object moves, including a subsystem operable to manage a map of the geographic space, and an update manager operable to change a boundary of an update block, which is a unit of an update contained in the map, according to an extent to which the update block is updated. Also provided is a method and computer program product.

First claim

What is claimed is:

1 . A method comprising:
managing a map of a geographic space including a route on which a moving object moves; and changing a boundary of an update block, which is a unit of an update contained in the map, according to an extent to which the update block is updated.

2 . The method according to claim 1 , wherein
the managing the map includes respectively managing, with a plurality of subsystems, maps of regions obtained by dividing the geographic space.

3 . The method according to claim 1 , wherein
the changing includes changing the boundary of at least one region among the plurality of regions, based on the extent to which the map corresponding to the at least one region is updated.

4 . The method according to claim 2 , wherein
each map corresponding respectively to a region includes at least one update block, and the changing includes changing the boundary of an update block within at least one region among the plurality of regions based on the extent to which the update block is updated.

5 . The method according to claim 1 , wherein the managing the map includes:
acquiring version information of a map possessed by the moving object, reflecting update data in the update block according to a version designated by the version information, and providing a service to the moving object based on the update block that reflects the update data.

6 . The method according to claim 1 , further comprising:
dividing the update block into a plurality of update blocks if the extent to which an update block is updated exceeds an upper limit value.

7 . The method according to claim 1 , further comprising:
combining the plurality of adjacent update blocks to form a new update block if a total of the extent to which a plurality of adjacent update blocks are updated is less than or equal to a lower value.

8 . The method according to claim 1 , wherein
the changing includes changing the boundary of an update block based on at least one of an update frequency, an update data amount, a number of update files, an update data loading time, and an update load for the map corresponding to the update block.

Assignees

• IBM

Inventors

• Gotoh Yasuhisa
• Miyahira Tomohiro
• Sasaki Taku
• Tanibayashi Makoto

Classifications

• G06T11/26

  Drawing of charts or graphs · CPC title

• G06T11/23

  using straight lines or curves · CPC title

• G06F17/30377 Primary

  Physics · mapped topic

• G01C21/26

  specially adapted for navigation in a road network · CPC title

• G06F17/30241

  Physics · mapped topic