公开(公告)号：EP2260266B1

公开(公告)日：2016-05-04

申请号：EP09727659.6

申请日：2009-02-26

申请人： Aisin AW Co., Ltd.

发明人： NIMURA, Mitsuhiro ,  SAKAMOTO, Tatsumi ,  HIYOKAWA, Toyoji ,  MASUDA, Hiroyoshi ,  SHIBATA, Tomofumi ,  HIRAKAWA, Kazuyuki ,  YAMAZAKI, Atsushi ,  HYAKUSAWA, Masahiro ,  TAKAHASHI, Masahiro

IPC分类号： G01C21/32

CPC分类号： G01C21/32

公开(公告)号：EP2260266A1

公开(公告)日：2010-12-15

申请号：EP09727659.6

申请日：2009-02-26

申请人： Aisin AW Co., Ltd.

发明人： NIMURA, Mitsuhiro ,  SAKAMOTO, Tatsumi ,  HIYOKAWA, Toyoji ,  MASUDA, Hiroyoshi ,  SHIBATA, Tomofumi ,  HIRAKAWA, Kazuyuki ,  YAMAZAKI, Atsushi ,  HYAKUSAWA, Masahiro ,  TAKAHASHI, Masahiro

IPC分类号： G01C21/32

CPC分类号： G01C21/32

摘要： A map updating system includes: an update processing unit for performing update processing by reading data required in the update processing from a cache area of a memory when the data are stored in the cache area and from a map database when the data are not stored in the cache area; a cache storage unit for storing the data read by the update processing unit in the cache area; a processing memory capacity determination unit for determining a processing memory capacity, which is a capacity of the memory required as an update processing area, on the basis of the content of map data to be subjected to the update processing; and a cache capacity determination unit for determining a cache capacity, which is a capacity of the memory allocated to the cache area, on the basis of the processing memory capacity.