Information processing device, computer readable storage medium, and map data updating system

Patent metadata

Field	Value
Publication number	US-2016282127-A1
Application number	US-201615064326-A
Country	US
Kind code	A1
Filing date	Mar 8, 2016
Priority date	Mar 23, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

A position measurement section of an on-board device measures a position of a vehicle. A travelling position identification section identifies a travelling position of the vehicle on map data based on the measured position of the vehicle and the map data. Then, a position error measurement section computes error information indicating the difference between the measured position of the vehicle and travelling position. Then, a communications section transmits the error information and the position information to a server. A communication section of the server receives the transmitted error information and position information. An error registration section stores the error information in an error database in association with the received position information. Then, for each respective item of position information, a priority level setting section sets a priority level corresponding to the position information based on the error information stored in the error database.

First claim

What is claimed is:

1 . An information processing device, comprising:
a difference registration unit that associates (A) difference information indicating a difference between (a) a position of a moving object measured based on a satellite signal transmitted from a positioning satellite and (b) a travelling position of the moving object on map data identified based on (i) at least one of the position of the moving object or external environment information indicating an environment of surroundings of the moving object and (ii) the map data, with (B) position information indicating at least one of the position of the moving object or the travelling position, and stores the associated information in a difference database; and an update information setting unit that, for each item of the position information, sets information indicating whether or not the map data, which is associated with the item of position information, is to be updated, based on the difference information associated with the position information stored in the difference database.

2 . The information processing device of claim 1 , wherein the update information setting unit measures an amount of change for each item of the position information, based on the difference information associated with the position information stored in the difference database, and sets information indicating whether or not the map data associated with the item of position information is to be updated based on the measured amount of change of the item of position information.

3 . The information processing device of claim 2 , wherein, for each item of the position information, the update information setting unit measures an average of the difference information associated with the item of position information as the amount of change, based on the difference information associated with the position information stored in the difference database, and sets information indicating whether or not the map data associated with the item of position information is to be updated based on a time series of the measured average of the difference information associated with the item of position information.

4 . The information processing device of claim 2 , wherein, for each item of the position information, the update information setting unit measures a variance of the difference information associated with the item of position information as the amount of change, based on the difference information associated with the position information stored in the difference database, and sets information indicating whether or not the map data associated with the item of position information is to be updated based on a time series of the measured variance of the difference information associated with the item of position information.

5 . The information processing device of claim 2 , wherein, for each item of the position information, the update information setting unit measures the number of items of the difference information associated with the item of position information of a predetermined threshold value or greater as the amount of change, based on the difference information associated with the position information stored in the difference database, and sets information indicating whether or not the map data associated with the item of position information is to be updated based on a time series of the measured number of items of difference information associated with the item of position information.

6 . A map data updating system, comprising:
an installed device that is installed in a moving object; and the information processing device of claim 1 , wherein the installed device comprises: an external environment detection unit that detects external environment information indicating an environment of the surroundings of the moving object; a position measurement unit that measures the position of the moving object based on a satellite signal transmitted from a positioning satellite; and a transmission unit that transmits, to the information processing device, the external environment information detected by the external environment detection unit and the position information indicating the position of the moving object measured by the position measurement unit, and wherein, in the information processing device, the difference registration unit associates the difference information indicating the difference between positions of the moving object measured by the position measurement unit with the position information, and stores the difference information in a difference database.

7 . The map data updating system of claim 6 , wherein:
the installed device further comprises:
a travelling position identification unit that identifies the travelling position of the moving object on map data based on the map data and on at least one of the position of the moving object measured by the position measurement unit or the external environment information detected by the external environment detection unit that detects external environment information indicating the environment of the surroundings of the moving object;
a difference information generation unit that computes difference information indicating the difference between the position of the moving object measured by the position measurement unit and the travelling position identified by the travelling position identification unit; and
a transmission unit that transmits, to the information processing device, the difference information computed by the difference information generation unit, and transmits the position information indicating at least one of the position of the moving object measured by the position measurement unit or the travelling position identified by the travelling position identification unit;
the information processing device further comprises a reception unit that receives the difference information and the position information transmitted by the transmission unit; and the difference registration unit stores the difference information in the difference database in association with the position information received by the reception unit.

8 . The map data updating system of claim 7 , wherein:
the installed device further comprises a determination unit that determines whether or not the difference information and the position information are to be transmitted, according to at least one of the difference information computed by the difference information generation unit, a travelling date and time at which the moving object was travelling, or a number of times that the moving object has travelled through a place on the map data associated with the position information; and the transmission unit transmits the difference information and the position information according to a determination result made by the determination unit.

9 . The map data updating system of claim 6 , wherein:
the installed device further comprises a determination unit that determines whether or not data is to be transmitted from the installed device, according to at least one of a travelling date and time at which the moving object was travelling, or a number of times that the moving object has travelled through a position on the map data; and the transmission unit transmits the data according to a determination result made by the determination unit.

10 . The map data updating system of claim 6 , wherein:
the information processing device further comprises a map data updating unit that updates the map data based on information set by the update information setting unit indicating whether or not the map data is to be updated; and a travelling position of the moving object on the map data is identified based on the external enviro

Assignees

• Toyota Chuo Kenkyusho Kk

Inventors

• Goto Kunihiro
• Yamaguchi Koichiro
• Kidono Kiyosumi
• Meguro Junichi

Classifications

• G01S19/48

  by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system · CPC title

• G01C21/005

  with correlation of navigation data from several sources, e.g. map or contour matching (G01C21/30 takes precedence) · CPC title

• G01S5/0027

  of actual mobile position, i.e. position determined on mobile · CPC title

• G01C21/30 Primary

  Map- or contour-matching · CPC title

• G01S19/42

  Determining position · CPC title