About 66 results
https://drivepatents.com/patents/1069519 · 8 Mar 2006
This invention provides a method of transmitting position information of a digital map capable of transmitting a position on a digital map efficiently and accurately. In a method of transmitting position information in which a transmitting side transmits p...
https://drivepatents.com/patents/1070618 · 25 Jan 2006
An object of the invention is to provide a route information transmitting method for transmitting a recommended route or a guided route to a receiving side accurately in as small a volume of data as possible. In the route information transmitting method of...
https://drivepatents.com/patents/1071819 · 14 Dec 2005
An object of the invention is to provide a method of transmitting travelingpath data that is capable of transmitting a traveling path accurately with a small data amount in a probe car system. An FCD in-vehicle device in the invention resamples a travel pa...
https://drivepatents.com/patents/1078287 · 27 Apr 2005
The present invention relates to a method for detecting a map matching position of a vehicle in a navigation system, wherein coordinates of a current vehicle location are obtained from navigation messages received by a GPS receiver using a general line equ...
https://drivepatents.com/patents/1081249 · 29 Dec 2004
The road network data on road network layers (A-C) is used for map matching. The road network in the highest-level layer (A) is matched with shape vector showing the shape of an object road. If no candidate road matching the shape vector is found in the hi...
https://drivepatents.com/patents/1082231 · 24 Nov 2004
The entire block of the transmission area of information such as shape vector data representing road shape and event information is divided into partitions of a plurality of layers and block definition is made so that the data amount in each partition is a...
https://drivepatents.com/patents/1083907 · 22 Sep 2004
Map data are managed by use of map file names representing given areas. In each map file name, the first character denotes a map structure code; the second character represents a zoom level for a zoom-in or zoom-out operation of the map on display; and the...
https://drivepatents.com/patents/1083964 · 15 Sep 2004
A method and an apparatus for detecting location of a movable body in a navigation system comprising a map data detector for detecting map information of a region corresponding to location information from an external digital map storage based on location ...
https://drivepatents.com/patents/1086518 · 16 Jun 2004
The invention purposes to provide a position information transmission method for accurately transmitting a position and a shape on a digital map with a small amount of data. In a position information transmission method of the invention, the transmitting s...
https://drivepatents.com/patents/1086502 · 16 Jun 2004
A car navigation apparatus includes: a current position detection device that detects a current position of a vehicle; and a control device that detects a plurality of roads as candidates used formapmatching based upon roadmap information containing road d...