MOVEMENT DISTANCE FALSIFICATION PREVENTING SYSTEM AND METHOD

• US 20120040692A1
• Filed: 04/13/2010
• Published: 02/16/2012
• Est. Priority Date: 04/13/2009
• Status: Active Grant

• Current Assignee: Colopl, Inc.
• Original Assignee: Colopl, Inc.
• Inventors: Baba, Naruatsu
• Granted Patent: US 8,260,316 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: G01C 22/00 Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
• CPC Class Codes: G01S 19/40 Correcting position, velocity or attitude
• CPC Class Codes: G01S 19/52 Determining velocity
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: G06F 21/57 Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities

Abstract

Improper acquisition of position information is prevented in a system in which points are added according to a movement distance of a user owning a cellular phone terminal. Position information of a cellular phone and the time information corresponding thereto are acquired on the basis of GPS or base station information. The movement distance and movement speed are calculated for each predetermined time interval, and whether or not the movement is within a range allowed for the corresponding transportation mode is determined on the basis of these position information and movement speed with reference to the mobile body database where timetables or the like have been recorded. The acquisition of the position information is determined to be improper when the movement is not in the range allowed for any of the transportation modes.

Claims

1. A movement distance falsification preventing system for a system in which points are added according to a movement distance of a user owning a portable terminal,

the movement distance falsification preventing system, comprising:

a position information acquisition unit which acquires position information of the portable terminal;

a time information acquisition unit which acquires time information;

a movement distance calculation unit which successively acquires position information from the position information acquisition unit for each predetermined time interval on the basis of the time information obtained from the time information acquisition unit and calculates a movement distance; and

a determination unit which determines whether movement is within a range allowed for a transportation mode assumed on the basis of at least one type of information from among the position information, time information, and the calculated movement distance,

wherein when the determination unit determines that the calculated movement distance is not within the range allowed for any of the transportation modes, the determination unit determines that the movement distance is improper.

2. The movement distance falsification preventing system according to claim 1, wherein the determination unit further detects whether or not same or close values of a parameter to be added to the position information obtained from the position information acquisition unit appear repeatedly for every predetermined number of information acquisitions, and determines that the movement distance is improper when the repeated appearance of same or close values has been detected.

3. A movement distance falsification preventing method in a system in which points are added according to a movement distance of a user owning a portable terminal,

the method, comprising:

acquiring position information of the portable terminal by a position information acquisition unit;

acquiring time information by a time information acquisition unit;

acquiring successively position information for each predetermined time interval on the basis of the time information and calculating a movement distance by a movement distance calculation unit; and

determining, by a determination unit, whether movement is within a range allowed for transportation modes assumed on the basis of at least one type of information from among the position information, time information, and the calculated movement distance, and determining that the movement distance is improper when the calculated movement distance is determined not to be within the range allowed for each of the transportation modes.

4. A movement distance falsification preventing program in a system in which points are added according to a movement distance of a user owning a portable terminal,

the program, implementing:

acquiring position information of the portable terminal by a position information acquisition unit;

acquiring time information by a time information acquisition unit;

acquiring successively position information for each predetermined time interval on the basis of the time information and calculating a movement distance by a movement distance calculation unit; and

determining, by a determination unit, whether movement is within a range allowed for transportation modes assumed on the basis of at least one type of information from among the position information, time information, and the calculated movement distance, and determining that the movement distance is improper when the calculated movement distance is determined not to be within the range allowed for each of the transportation modes.

5. A recording medium storing a movement distance falsification preventing program in a system in which points are added according to a movement distance of a user owning a portable terminal,

the program, executing:

acquiring position information of the portable terminal by a position information acquisition unit;

acquiring time information by a time information acquisition unit;

acquiring successively position information for each predetermined time interval on the basis of the time information and calculating a movement distance by a movement distance calculation unit; and

determining, by a determination unit, whether movement is within a range allowed for a transportation modes assumed on the basis of at least one type of information from among the position information, time information, and the calculated movement distance, and determining that the movement distance is improper when the calculated movement distance is determined not to be within the range allowed for each of the transportation modes.

6. A movement distance falsification preventing system for a system in which points are added according to a movement distance of a user owning a portable terminal,

the movement distance falsification preventing system, comprising:

a position information acquisition unit which acquires position information and error information of the portable terminal;

a time information acquisition unit which acquires time information; and

a movement distance calculation unit which records the position information and error information obtained from the position information acquisition unit for each time information obtained from the time information acquisition unit and calculates a movement distance from a difference in position information for each recording timing,

wherein a predetermined number of combinations of the position information and the error information associated with the time information are transmitted to an analytical unit at a stage at which the predetermined number of combination sets of at least the position information and the error information associated with the time information are accumulated in a storage unit.

7. The movement distance falsification preventing system according to claim 6, wherein the analytical unit reads the error information from the plurality of received sets of the position information and error information which are associated with time information and determines that the movement distance is improper when the movement distance calculated by the movement distance calculation unit is equal to or greater than a predetermined distance and the error information of the plurality of sets match.

8. The movement distance falsification preventing system according to claim 6, wherein

the analytical unit receives as a first combination information a combination of a predetermined number of the position information data and the error information data which are associated with time information, and receives as a second combination information a combination of a predetermined number of the position information data and the error information data which are associated with time information after a predetermined time has elapsed since the reception of the first combination information;

sets a first flag when all of the error information data in the first combination information match and determines whether a movement distance that is equal to or greater than a predetermined value is present between the first combination information and the second combination information when all of the error information data in the second combination information match;

determines that data are improper when the movement distance equal to or greater than a predetermined value is present; and

retains the setting of the first flag when the movement distance equal to or greater than the predetermined value is not present and waits for the reception of a third combination information.