Method and apparatus for displaying navigation information
First Claim
1. A vehicle navigation apparatus comprising:
- a display;
a database operable to store pre-update navigation data and difference data;
a difference data receiver operable receive difference data;
a difference data processor operable to generate freshness information based on the received difference data and pre-update navigation data; and
a display controller operable to generate images corresponding to map information, vehicle position, guidance information and freshness information for presentation on the display.
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Accused Products
Abstract
A vehicle navigation apparatus enabling a user to know whether a data item for display is the latest updated one or has old contents, thereby allowing him/her to confidently drive according to a guidance route provided by navigation. The vehicle navigation apparatus is adapted to update a database by receiving difference data. The navigation apparatus displays not only the data item for display but also freshness information on the data, based on the difference data and storage contents in the pre-update database. The freshness information may indicate whether the freshness of the data item for display is guaranteed or not, and may be displayed in a manner according to the freshness of the data item.
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Citations
18 Claims
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1. A vehicle navigation apparatus comprising:
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a display;
a database operable to store pre-update navigation data and difference data;
a difference data receiver operable receive difference data;
a difference data processor operable to generate freshness information based on the received difference data and pre-update navigation data; and
a display controller operable to generate images corresponding to map information, vehicle position, guidance information and freshness information for presentation on the display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for displaying navigation information, said method comprising the acts of:
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providing a database, the database including pre-update navigation data;
receiving difference data for a location;
comparing the difference data with existing update information in the database; and
displaying a location name and freshness information for the location. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification