Abstract: An object detection apparatus is mounted to a moving body to which a plurality of distance measurement sensors are mounted, and detects an object that is present in a vicinity of the moving body. In response to direct waves and indirect waves being received, the object detection apparatus acquires a relative position of an object to a moving body based on principles of triangulation using distance measurement information based on the direct waves and distance measurement information based on the indirect waves. In response to the received waves being reflected waves from an object of which the relative position has been already acquired and only either of the direct waves and the indirect waves being received as received waves, the object detection apparatus estimates the relative position of the object to the moving body based on a reference position that is the relative position that has been already acquired.

Abstract: A head-up display device includes: an optical unit that projects picture light toward a front windshield of a vehicle, and that displays picture information reflected on the front windshield as a virtual image; a display controller that controls the optical unit so as to display the picture information on the front windshield; and a vehicle state identifying device that identifies a vehicle state. The display control device controls the optical unit so as to move the display position of the picture information in a direction in which the field of view of a driver of the vehicle can be secured according to the vehicle state identified by the vehicle state identifying device.

Abstract: A head-up display device includes: an optical unit that projects picture light toward a front windshield of a vehicle, and that displays picture information reflected on the front windshield as a virtual image; a display controller that controls the optical unit so as to display the picture information on the front windshield; and a vehicle state identifying device that identifies a vehicle state. The display control device controls the optical unit so as to move the display position of the picture information in a direction in which the field of view of a driver of the vehicle can be secured according to the vehicle state identified by the vehicle state identifying device.

Abstract: A navigation system includes a navigation apparatus, a data center, a communication-defective region acquisition device, a communication-defective region search device, and a target region specify device. The data center performs transmits an update data of a target region to the navigation apparatus. The communication-defective region acquisition device acquires information of a communication-defective region. The communication-defective region search device searches for a part of the communication-defective region as a target communication-defective region, which includes a route scheduled to go through. The target region specify device specifies the target region based on the target communication-defective region. The data center includes an update data transmission device that transmits the update data of the target region to the navigation apparatus before the navigation apparatus enters the target communication-defective region.

Abstract: An electric device for executing a process based on a map data includes: a map data memory; a work memory; and a CPU for developing a map data from the map data memory into the work memory. The CPU executes the process based on the developed map data. The map data provides a road network defined by unit links and link connection relationships, and includes an attribution data in each link. The CPU generates a node table according to the attribution data. The node table stores a link connection information in each node as the connection point coupled with links. The link connection information provides identification of the links coupled with each other at a corresponding node. The CPU writes the node table as the developed map data into the work memory.

Abstract: A navigation system includes a navigation apparatus, a data center, a communication-defective region acquisition device, a communication-defective region search device, and a target region specify device. The data center performs transmits an update data of a target region to the navigation apparatus. The communication-defective region acquisition device acquires information of a communication-defective region. The communication-defective region search device searches for a part of the communication-defective region as a target communication-defective region, which includes a route scheduled to go through. The target region specify device specifies the target region based on the target communication-defective region. The data center includes an update data transmission device that transmits the update data of the target region to the navigation apparatus before the navigation apparatus enters the target communication-defective region.

Abstract: A navigation apparatus is disclosed. The navigation apparatus is configured to: acquire a trace of a vehicle; produces unregistered road data representative of an unregistered road based on the trace when the vehicle travels on the unregistered road; register the unregistered road data in a storage medium; determine whether the vehicle makes a turn in direction; determine based on the trace whether deviation of the vehicle from a road is greater than or equal to a deviation threshold, when it is determined the vehicle makes the turn in direction; and prohibits the unregistered road data from being registered in the storage medium when it is determined that the deviation of the vehicle from the road is less than the deviation threshold.

Abstract: An electric device for executing a process based on a map data includes: a map data memory; a work memory; and a CPU for developing a map data from the map data memory into the work memory. The CPU executes the process based on the developed map data. The map data provides a road network defined by unit links and link connection relationships, and includes an attribution data in each link. The CPU generates a node table according to the attribution data. The node table stores a link connection information in each node as the connection point coupled with links. The link connection information provides identification of the links coupled with each other at a corresponding node. The CPU writes the node table as the developed map data into the work memory.

Abstract: A navigation apparatus is disclosed. The navigation apparatus is configured to: acquire a trace of a vehicle; produces unregistered road data representative of an unregistered road based on the trace when the vehicle travels on the unregistered road; register the unregistered road data in a storage medium; determine whether the vehicle makes a turn in direction; determine based on the trace whether deviation of the vehicle from a road is greater than or equal to a deviation threshold, when it is determined the vehicle makes the turn in direction; and prohibits the unregistered road data from being registered in the storage medium when it is determined that the deviation of the vehicle from the road is less than the deviation threshold.