发明名称 |
Map display device, map display method, and computer program for use in map display device |
摘要 |
<p>In a map display device, a surface storing unit stores surface information which defines a curved surface having a form that depends on positions of portions of a map which are to be enlarged and/or contracted. A mapping unit maps the map onto the curved surface defined by the surface information. A projecting/displaying unit projects the mapped map onto a flat virtual screen, and displays the projected image. Here, by defining the curved surface so that each part of the curved surface forms an intended angle with a line of sight in the projection, the image is displayed with desired portions enlarged and/or contracted, while maintaining connections of roads. The same effect can also be achieved by projecting the map onto a virtual screen having the form of the curved surface.</p> |
申请公布号 |
EP1160544(A2) |
申请公布日期 |
2001.12.05 |
申请号 |
EP20010304737 |
申请日期 |
2001.05.30 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
MOCHIZUKI, YOSHIYUKI;SENDA, KEIICHI;NISHIMURA, KENJI |
分类号 |
G01C21/36;G09B29/10;(IPC1-7):G01C21/36 |
主分类号 |
G01C21/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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