Patent
Map difference data delivery system, map difference data delivery device, map data holding device, update management server, and map difference extraction server
Makoto Yano,誠 矢野,Yasutaka Atarashi,康孝 新,Takamitsu Suzuki,鈴木 孝光 +5 more
- 21 Mar 2014
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TL;DR: In this paper, a map difference data delivery system according to one embodiment is provided with a grouping unit (134) that groups with each other non-updated difference groups having a dependency relationship within a same number of releases.
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Abstract: A map difference data delivery system according to one embodiment is provided with a grouping unit (134) that groups with each other non-updated difference groups having a dependency relationship within a same number of releases out of non-updated difference groups extracted by a non-updated data extraction unit (233), and a delivery data creation unit (135) that arranges records that are the non-updated difference groups that have been grouped by the grouping unit (134) in order starting with records for older versions such that the records fit within a prescribed communication size, and creates delivery data to be delivered by a delivery unit (137). Delivery is made in order starting with delivery data containing records for older versions.
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Patent
Map update data delivery method, map update data delivery device and terminal device
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