摘要:
A method for switching a reference map data in a navigation device having a map data memory for storing a plurality of map data, the navigation device executing a navigation function with using a first map data among the plurality of map data stored in the map data memory as the reference map data, the method includes: reading out a second map data from a memory medium; determining whether the map data memory already stores a same map data as the second map data; and switching the reference map data from the first map data to the same map data as the second map data when the map data memory already stores the same map data as the second map data in the memory medium.
摘要:
A method for switching a reference map data in a navigation device having a map data memory for storing a plurality of map data, the navigation device executing a navigation function with using a first map data among the plurality of map data stored in the map data memory as the reference map data, the method includes: reading out a second map data from a memory medium; determining whether the map data memory already stores a same map data as the second map data; and switching the reference map data from the first map data to the same map data as the second map data when the map data memory already stores the same map data as the second map data in the memory medium.
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:
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:
Conventionally, different traffic information cannot be sent in accordance with an output reason of a request to send. According to the present invention, a request to send traffic information, which is output in response to an instruction given by a user operation or an automatically given instruction, is acquired, an output reason of the request to send is determined, and a communication unit is controlled so that the traffic information on different areas is sent depending on the cases where the output reason is the instruction given by the user operation or the automatically given instruction.
摘要:
A vehicle guidance device includes: an inter- vehicle distance specification unit that specifies an inter-vehicle distance, which is an inter-vehicle distance in a prescribed lane, between vehicles up to a reference point of a lane change; a recommended section specification unit that ,based on the specified inter-vehicle distance, specifies a recommended section in which a lane change to the prescribed lane should be made before reaching the reference point; and a communication unit that, based on the specified recommended section, outputs guidance information pertaining to the lane change to the prescribed lane.
摘要:
According to the present invention, information which is associated with a motion of a vehicle can be acquired even in the case where no vehicle travels on a road. Motion information, which is associated with the motion of the vehicle on the road where the vehicle traveled, is acquired along with time information. Reference traffic information, which is traffic information on the road at a reference time which is specified by the time information, is acquired from a traffic information providing device which constantly provides the traffic information. A correlation between the motion information and the reference traffic information is specified. Furthermore, estimated motion information, which indicates an estimated motion of the vechicle on the road at an estimate time when the motion is estimated, is acquired based on estimating source traffic information at the estimate time and the correlation, the estimating source traffic information being provided as the traffic information of the estimating source from the traffic information providing device in the case where no motion information is acquired at the estimate time.
摘要:
A vehicle guidance device includes: an inter- vehicle distance specification unit that specifies an inter-vehicle distance, which is an inter-vehicle distance in a prescribed lane, between vehicles up to a reference point of a lane change; a recommended section specification unit based on the specified inter-vehicle distance, specifies a recommended section in which a lane change to the prescribed lane should be made before reaching the reference point; and a communication unit that, based on the specified recommended section, outputs guidance information pertaining to the lane change to the prescribed lane.
摘要:
Conventionally, different traffic information cannot be sent in accordance with an output reason of a request to send. According to the present invention, a request to send traffic information, which is output in response to an instruction given by a user operation or an automatically given instruction, is acquired, an output reason of the request to send is determined, and a communication unit is controlled so that the traffic information on different areas is sent depending on the cases where the output reason is the instruction given by the user operation or the automatically given instruction.
摘要:
When a vehicle passes through an intersection that is stored in a collection target intersection database and for which direction-specific probe information is collected, a CPU of a navigation device generates a plurality of direction-specific probe information (entry link, exit link, section travel time, and the like) from a plurality of unit distance section information that is collected within a direction-specific traffic information acquisition section until the vehicle passes through the intersection, an entry link traveled before entering the intersection; and an exit link traveled after passing through the intersection, and transmits these to an information distribution center.