Map information processing device, map information processing method, and method for adjusting update data

A map information processing apparatus comprising:

• a receiver that receives past map information including a past road link and current map information including a current road link;
• and
• a data extractor that extracts a difference between a shape of said past road link and a shape of said current road link as update data for updating predetermined map information,
• wherein said data extractor does not extract said difference as said update data in a case where one road link of said past road link and said current road link is included in a buffer region obtained by extending the shape of the other road link by a predetermined distance.

A map information processing method comprising the steps of:

• (a) acquiring past map information including a past road link and current map information including a current road link;
• and
• (b) extracting a difference between a shape of said past road link and a shape of said current road link as update data for updating predetermined map information,
• wherein in said step (b), said difference is not extracted as said update data in a case where one road link of said past road link and said current road link is included in a buffer region obtained by extending the shape of the other road link by a predetermined distance.