Clarion Co

Faurecia Clarion Electronics Co., Ltd.

Arata Hayashi

Naoki Shimizu

Takaaki Sekiguchi

Akio Sumizawa

Shinichi Amaya

Satoshi Kurihara

Mitsunori Maru

Katsuhiko Kageyama

Naoya Baba

Hideo Fujiwara

The present invention is to perform appropriate display on a display of a navigation system. A navigation system that displays an image on a display and presents the image to an occupant of a vehicle, acquires data for generating drawing elements from at least one information source and stores the data in a temporary storage for each of the drawing elements included in the image, selects, from among normal available data stored in the temporary storage, data based on the information source determined in accordance with a predetermined setting, and causes a drawing processor to draw an image combining the drawing elements based on the selected data.

Navigation system, navigation display method, and navigation display program

A history information storage apparatus includes: a storage unit that stores history information about a travel history of a vehicle and map data divided into a plurality of sections; a change detection unit that detects a change of the map data; an influence range determination unit that determines a section influenced by the change as an influenced section from among the plurality of sections; a history information control unit that temporarily invalidates the history information about the influenced section; and a navigation unit that calculates a route from a departure place to a destination in consideration of the history information and records, in the history information, a history of a travel of the vehicle which has strayed from the route.

History information storage apparatus, route calculation method, and influence range distribution system

The present invention performs route guidance that excludes a difficult-to-travel section appropriately and provides an alternative route with favorable route quality. A navigation deviceincludes an arithmetic devicethat, when a route including a difficult-to-travel section is found, identifies the route as a candidate route while adding a predetermined penalty cost to the cost of the route, identifies an alternative route obtained by coupling a first partial route from a constituent node in the difficult-to-travel section of the found route to a destination with a second partial route from the departure point of the found route to a node having already been searched for, identifies the alternative route as a candidate route after adding a coupling cost for reaching from the already-searched node to the certain constituent node in the difficult-to-travel section to costs of the first and second partial routes, selects one of the candidate route with the penalty cost and the candidate route with the coupling cost with the smaller cost as a guidance route.

Navigation device, route search server, and route search method

Provided are navigation technologies capable of preferentially guiding a vehicle to a route of a driving lane that can be available if given conditions are met. A navigation device is provided with a storage unit adapted to store lane information including the presence or absence of a driving lane that can be available if given conditions are met (hereinafter referred to as a conditional lane), a conditional-lane determining unit adapted to determine whether a vehicle equipped with the navigation device meets the conditions for driving in the conditional lane, and a route searching unit adapted to search a recommended route to a destination, wherein said route searching unit uses lane information to preferentially search for a route which utilizes a road including the conditional lane, when the conditional-lane determining unit determines that the aforementioned conditions are met.

Navigation device and method of searching route by the same

Disclosed is technology for providing guidance in a manner that facilitates travel along a guidance route when there is a road which has a carpool lane. A navigation device () is provided with: a current-location calculation means for calculating the current location of a moving body; a recommended route search means for searching for a recommended route to a destination; a guidance-point setting means for setting a guidance point in the recommended route; and a guidance information notification means for notifying predetermined guidance information when a moving body reaches a set guidance point. When predetermined conditions are fulfilled, the guidance-point setting means sets in a road which has a carpool lane a guidance point for notifying information for guidance from said road to a branch road, before the guidance point that would be set in a road that does not have a carpool lane.

Growing community of inventors

Saitama, Japan

Arata Hayashi