摘要:
When an update instruction to update “A” navigation map information and “B” navigation map information is inputted, a CPU initializes the storage area having stored therein no map information currently in use out of the two storage areas. The CPU then reads, from a CD-ROM, the latest version of the “A” navigation map information or the “B” navigation map information that corresponds to the map information currently in use, and stores it in the initialized storage area. The CPU then updates management information, starts use of the newly stored map information, initializes the storage area having stored therein the map information whose use is stopped out of the two storage areas, reads, from the CD-ROM, the latest version of the “A” navigation map information or the “B” navigation map information not currently in use, and stores it in the initialized storage area.
摘要:
A driving support device includes: a position detector; a traveling direction detector; a map data memory; a map matching element for matching a current position of a vehicle on a road of map data; a traveling segment estimation element for estimating a current segment of the vehicle in the parking place road when a matched road is the parking place road; a main road search element for determining whether a segment of a main road of an express way is disposed in a predetermined search distance from an estimated current segment; and a reverse run determination element for determining whether the vehicle travels reversely when the main road search element determines that the segment of the main road is disposed in the predetermined search distance from the estimated current segment.
摘要:
Data in an update data format for performing an update of reference map data is formed by storing in each data frame divided for each data type, at least one of: a first group of one or more common map data records to be stored according to the data type of each data frame in a common map data frame after a conversion by a conversion unit; a second group of one or more first map data records to be stored according to the data type of each data frame in a first map data frame after a conversion by a conversion unit; and a third group of one or more second map data records to be stored according to the data type of each data frame in a second map data frame after a conversion by a conversion unit.
摘要:
A CPU of a navigation apparatus stores public keys to which priorities are set and which are published by an information distribution center in a public key storage section. The CPU of the navigation apparatus extracts an electronic signature of distribution data which is distributed from the information distribution center and verifies the electronic signature by using only ‘valid’ public keys among the public keys in order of the priorities. The CPU of the navigation apparatus determines that the distribution data is valid information which is distributed from the information distribution center when the electronic signature passes verification.
摘要:
When the navigation apparatus 5 performs a difference update on navigation map data 39 based on difference update data 17 distributed from a map distribution center 2, the difference update data 17 used in the difference update is stored into a navigation HDD 32, when the navigation apparatus 5 performs a total update on the navigation map data 39 thereafter, the navigation apparatus 5 performs a difference update again (S17) by using any piece of the difference update data stored in the navigation HDD 32 of which the version is newer than that of total update data. After performing the update, the navigation apparatus 5 deletes the pieces of difference update data 17 from the navigation HDD 32 that have been stored up to that point in time (S18).
摘要:
Map information distribution systems and methods store map information and version information for each road category of the map information stored in a navigation device, the version information correlated with identification information identifying the navigation device. The systems and methods receive the identification information from the navigation device and obtain, based on the received identification information, the version information for each road category of the map information stored in the navigation device corresponding to the stored identification information. The systems and methods extract, based on the obtained version information for each road category, differential data for each road category with stored map information of a latest version, and transmit the extracted differential data for each road category to the navigation device corresponding to the received identification information.
摘要:
A route search device including a database in which map information and facility information are stored, a reference location information obtaining unit that obtains reference location information as location information of a given point from an outside of the route search device, a location information obtaining unit that obtains location information of a desired facility from the outside, a corresponding location information obtaining unit that obtains corresponding location information as location information of a point corresponding to the given point, from the database, a location correction factor calculating unit that calculates a location correction factor, a location correction factor storage unit that stores the location correction factor, a location information correcting unit that corrects the location information of the desired facility, using the location correction factor, and a route searching unit that makes a search for a route to the desired facility, based on the corrected location information.
摘要:
Map updating systems, methods, and programs that store map information, including one or more pieces of difference update information, obtain the one or more pieces of difference update information used for updating a part of the map information to a new piece of map information, update the map information based on the one or more pieces of difference update information, and obtain total update information used for updating an entirety of the map information to a new piece of map information. The systems, methods, and programs perform a total update on the map information based on the total update information, update the map information on which the total update has been performed based on the one or more pieces of difference update information, and delete the one or more pieces of difference update information from the memory after the map information is updated by the re-updating means.
摘要:
Map updating systems, methods, and programs that store map information, including one or more pieces of difference update information, obtain the one or more pieces of difference update information used for updating a part of the map information, and update the map information based on the one or more pieces of difference update information. The systems, methods, and programs obtain total update information used for updating an entirety of the memory to a new piece of map information, update the map information based on the total update information, compare a version of the total update information used in the total update with each of versions of the one or more pieces of difference update information stored in the memory, extract any of the one or more pieces of difference update information judged to be newer and update the map information based on the difference update information.
摘要:
A driving support device includes: a position detector; a traveling direction detector; a map data memory; a map matching element for matching a current position of a vehicle on a road of map data; a traveling segment estimation element for estimating a current segment of the vehicle in the parking place road when a matched road is the parking place road; a main road search element for determining whether a segment of a main road of an express way is disposed in a predetermined search distance from an estimated current segment; and a reverse run determination element for determining whether the vehicle travels reversely when the main road search element determines that the segment of the main road is disposed in the predetermined search distance from the estimated current segment.