Navigation device and navigation system

• US 8,447,453 B2
• Filed: 07/03/2008
• Issued: 05/21/2013
• Est. Priority Date: 07/05/2007
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Sengoku, Koji, Sugawara, Aiko, Arai, Masayuki, Kinoshita, Yoshitaka
• Primary Examiner(s): Tran, Khoi
• Assistant Examiner(s): Bendidi, Rachid
• Application Number:
  US12/667,412
• Publication Number:
  US 20100185387A1
• Time in Patent Office: 1,783 Days
• Field of Search: 701/400, 701/408, 701/409, 701/410, 701/411, 701/412, 701/416, 701/417, 701/420, 701/421, 701/423, 701/430, 701451-453, 701/461, 701/462, 701/463
• US Class Current: 701/23
• CPC Class Codes: G01C 21/3415 Dynamic re-routing, e.g. recalculating the route when the user deviates from calculated route or after detecting real-time traffic data or accidents
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096741 where the source of the transmitted information selects which information to transmit to each vehicle
• CPC Class Codes: G08G 1/096775 where the origin of the information is a central station
• CPC Class Codes: G08G 1/096827 where the route is computed onboard
• CPC Class Codes: G08G 1/096844 where the complete route is dynamically recomputed based on new data

Abstract

A navigation device for setting an appropriate navigation route based on a support route while reducing an amount of communicating information, is provided. The navigation server recognizes a departure position and a destination position of a user, and sets a support route connecting the departure position and the destination position, based on communication with the navigation device. The navigation device recognizes multiple links constituting a part of the support route, based on communication with the navigation server. The navigation device sets a navigation route including the links connecting the departure position and the destination position. The navigation device determines whether a deviation between a distance of an adjacent link pairs among the links along the support route and a distance thereof along the navigation route is equal to or less than a threshold value. The navigation route is output via an output device if the determination result is positive.

Claims

1. A navigation device which guides a user on the basis of communication with a navigation server, comprising:

a navigation map storing unit which stores a navigation map information;

a first processing unit which makes the navigation server recognize a departure position and a destination position of the user on the basis of communication with the navigation server, and which recognizes a plurality of links constituting a part of a support route set by the navigation server which connects the departure position and the destination position;

a second processing unit which sets a navigation route including a plurality of the links which connects the departure position and the destination position, on the basis of the navigation map information stored in the navigation map storing unit and a plurality of the links recognized by the first processing unit; and

a third processing unit which determines whether or not a deviation between a distance of an adjacent link pair among a plurality of the links along the support route set by the first processing unit and a distance thereof along the navigation route set by the second processing unit is equal to or smaller than a threshold value, and which outputs the navigation route via the output device on condition that the determination result is positive.

2. The navigation device according to claim 1, wherein the first processing unit recognizes a new plurality of the links constituting a part of the support route on the basis of communication with the navigation server, on condition that the determination result by the third processing unit is negative.

3. The navigation device according to claim 1, wherein the first processing unit recognizes the threshold value for each of the adjacent link pairs among a plurality of the links constituting a part of the support route, on the basis of communication with the navigation server.

4. The navigation device according to claim 1, wherein the first processing unit makes the navigation server set the support route according to a setting mode of the support route input by the user via an input device, by transmitting the setting mode to the navigation server.

5. A navigation system configured from a navigation server and a navigation device which guides a user on the basis of communication with the navigation server,

the navigation device comprising:

a navigation map storing unit which stores a navigation map information;

a first processing unit which makes the navigation server recognize a departure position and a destination position of the user on the basis of communication with the navigation server, and which recognizes a plurality of links constituting a part of a support route set by the navigation server which connects the departure position and the destination position;

a second processing unit which sets a navigation route including a plurality of the links which connects the departure position and the destination position, on the basis of the navigation map information stored in the navigation map storing unit and a plurality of the links recognized by the first processing unit; and

a third processing unit which determines whether or not a deviation between a distance of an adjacent link pair among a plurality of the links along the support route set by the first processing unit and a distance thereof along the navigation route set by the second processing unit is equal to or smaller than a threshold value, and which outputs the navigation route via the output device on condition that the determination result is positive;

the navigation server comprising;

a support map storing unit which stores a support map information;

a first support processing unit which recognizes the departure position and the destination position of the user on the basis of communication with the navigation device, and which sets a support route which connects the departure position and the destination position, on the basis of the support map information stored in the support map storing unit; and

a second support processing unit which makes the navigation device recognize the plurality of links constituting a part of the support route set by the first support processing unit, on the basis of communication with the navigation device.

6. The navigation system according to claim 5, wherein the first processing unit recognized a new plurality of the links constituting a part of the support route on the basis of communication with the navigation server, on condition that the determination result by the third processing unit is negative.

7. The navigation system according to claim 5, wherein the first processing unit recognizes the threshold value for each of the adjacent link pairs among a plurality of the links constituting a part of the support route, on the basis of communication with the navigation server.

8. The navigation system according to claim 5, wherein the first processing unit makes the navigation server set the support route according to a setting mode of the support route input by the user via an input device, by transmitting the setting mode to the navigation server.