In-vehicle navigation apparatus
AssigneeDenso Corporation
InventorWako Yamada
Life of this patent
Estimating the term…
Abstract
An in-vehicle navigation apparatus includes the following: a master road regulation data table which stores a master road regulation data to be associated with road segments as applied targets; a temporary road regulation data table, which is prepared apart from the master road regulation table and stores temporary road regulation data to be associated with road segments and applied in preference to the master road regulation data; and a data determination unit which determines with respect to each road segment an application of either the master road regulation data or temporary road regulation data based on reference information for determining road regulation data validity. The determined road regulation data is outputted.
Claims17
A navigation apparatus for a vehicle, the apparatus comprising:
- a road map data storage unit configured to store road map data;
- a road regulation data storage unit configured to store master road regulation data table and temporary road regulation data table,
- the master road regulation data table including master road regulation data to be associated with road segments in the road map data,
- the temporary road regulation data table being independent from the master road regulation data table and including temporary road regulation data to be associated with a predetermined road segment included in the road segments, the temporary road regulation data being applied in preference to the master road regulation data;
- the temporary road regulation data table further including reference information in association with the temporary road regulation data for determining which of the master road regulation data and the temporary road regulation data is valid with respect to one of the road segments as a target road segment, the reference information indicating an application period for the temporary road regulation data with respect to the target road segment;
- a data determination unit configured to determine an application of either the master road regulation data or the temporary road regulation data to the target road segment based on the reference information stored in the temporary road regulation data table;
- and
- a road regulation data output unit configured to output either the master road regulation data or the temporary road regulation data of which the application is determined, wherein
- the data determination unit includes a present date and time acquisition unit to acquire a present date and time;
- and
- the data determination unit (i) performs a comparison of the acquired present date and time with the application period included in the reference information for the temporary road regulation data with respect to the target road segment, and (ii) determines an application of either the master road regulation data or the temporary road regulation data to the target road segment based on a result from the comparison.
A method for determining an application of road regulation data using road map data for a vehicle, the method comprising:
- storing master road regulation data to be associated with road segments in the road map data;
- storing temporary road regulation data to be associated with a predetermined road segment included in the road segments, the temporary road regulation data being applied in preference to the master road regulation data;
- storing reference information to be associated with the temporary road regulation data with respect to the target road segment for determining which of the master road regulation data and the temporary road regulation data is valid with respect to one of the road segments as a target road segment, the reference information indicating an application period for the temporary road regulation data with respect to the target road segment;
- determining an application of either the master road regulation data or the temporary road regulation data to the target road segment based on the stored reference information;
- acquiring a present data and time;
- and
- (i) performing a comparison of the acquired present date and time with the application period included in the reference information for the temporary road regulation data with respect to the target road segment, and (ii) determining and application of either the master road regulation data or the temporary road regulation data to the target road segment based on a result from the comparison.
Dependencies are inferred from the claim text.