Norimasa Kishi, Masayuki Takada: Vehicle navigation apparatus providing simultaneous forward and rearward views. Nissan Motor, Foley & Lardner, May 9, 1995: US05414461 (521 worldwide citation)

In an apparatus for controllably supplying visual information for a viewer, an optical system including ocular glasses corresponding to right and left eyes of the driver (viewer) is provided so that images on a pair of liquid crystal televisions are introduced to the pair of ocular glasses to provid ...

Shinichi Kato, Katsuhiko Mutsuga: Route search and navigation apparatus and storage medium storing computer programs for navigation processing with travel difficulty by-pass. Aisin AW, Lorusso & Loud, August 8, 2000: US06101443 (272 worldwide citation)

The present invention prevents execution of a detour route search, responsive to and in accordance with received VICS data, where certain conditions are not met. To this end, the system of the invention calculates a time RT1 required for a vehicle to move from its present location to a first point w ...

Seigo Ito: Position measuring apparatus, position measuring method, navigation apparatus, navigation method, information service method, automotive vehicle, and audio information transmitting and receiving method. Sony Corporation, Jay H Maioli, December 7, 1999: US05999126 (238 worldwide citation)

A position measuring apparatus includes a first position measuring device for position measuring a first position by receiving a first radio wave, a second position measuring device for position measuring a second position by receiving a second radio wave, an evaluating unit for evaluating uncertain ...

Yasuo Ito, Naoki Gorai, Takashi Sugawara, Satoshi Kitano: Communications navigation system, and navigation base apparatus and vehicle navigation apparatus both used in the navigation system. KabushikiKaisha Equos Research, Lorusso & Loud, June 19, 2001: US06249740 (220 worldwide citation)

A commucations navigation system in which data is transmitted and received between a navigation base apparatus provided at a navigation base and a vehicle navigation apparatus provided in a vehicle using communication. The vehicle navigation apparatus is adapted to transmit at least data concerning ...

Carl E Person: Portable electronic navigation aid. Kenneth A Roddy, November 19, 1991: US05067081 (212 worldwide citation)

A portable electronic navigation apparatus and method utilizes universal latitude and longitude coordinates of geographic points and landmarks for determining current location or a specific destination and the distance and bearing thereof relative to landmark data input by the user. Latitude and lon ...

Masaki Kakihara, Masao Sasaki, Yasuyuki Masaki, Tatsuaki Taniguchi, Toshihiko Okamoto, Futoshi Shoji, Keiji Takao: Navigation apparatus for vehicles. Mazda Motor Corporation, Price Heneveld Cooper DeWitt & Litton, March 8, 1994: US05293163 (201 worldwide citation)

A navigation apparatus for vehicles according to the present invention has a display device for displaying road information. The navigation system is designed to selectively display the road information which is close to the current position of the vehicle and/or the demands of the driver from a lar ...

Shoji Yokoyama: Route guide system. Kabushikikaisha Equos Research, Lorusso & Loud, August 21, 2001: US06278941 (195 worldwide citation)

In order to enable a location function for telling the present position on a screen as a function usually used when traveling in a known area to be always used by its lone, a navigation apparatus

Koichi Endo, Kan Shishido: Navigation apparatus. Alpine Electronics, Honda Giken Kogyo Kabushiki Kaisha, Nikaido Marmelstein Murray & Oram, May 11, 1999: US05902349 (184 worldwide citation)

A navigation apparatus is provided which can search out, even if a vehicle goes off of a guide route, a route which allows the vehicle to return to the guide route so that the travel distance to a destination may be comparatively short. A guide route control unit calculates, when the vehicle is in a ...


Takashi Yamada: Route searching system of navigation apparatus. Aisin AW, Kabushiki Kaisha Shinsangyokaihatsu, Varndell Legal Group, May 15, 1990: US04926336 (172 worldwide citation)

A route searching system having node data 3 representing information on positions and attributes of the same, intersection data 1 representing information on intersections, road data 2 representing information on roads, and a route searching section 4 for searching for the optimum route from the int ...