Apparatus and method for probe data management

• US 10,045,206 B2
• Filed: 01/14/2015
• Issued: 08/07/2018
• Est. Priority Date: 01/14/2014
• Status: Active Grant

• Current Assignee: TomTom International BV (TomTom NV)
• Original Assignee: TomTom Traffic B.V. (TomTom NV)
• Inventors: Hania, Simon, Dixon, Michael Joseph
• Primary Examiner(s): Bataille, Frantz
• Application Number:
  US15/111,489
• Publication Number:
  US 20160330615A1
• Time in Patent Office: 1,301 Days
• CPC Class Codes: G06F 16/22 Indexing; Data structures therefor; Storage structures
• CPC Class Codes: G06F 21/6254 by anonymising data, e.g. decorrelating personal data from the owner's identification
• CPC Class Codes: H04L 63/0414 during transmission, i.e. party's identity is protected against eavesdropping, e.g. by using temporary identifiers, but is known to the other party or parties involved in the communication
• CPC Class Codes: H04W 12/02 Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
• CPC Class Codes: H04W 4/029 Location-based management or tracking services

Abstract

Embodiments of the present invention relate to methods and systems for probe data management that facilitate anonymity between a device providing probe data and the probe data. Some embodiments relate to the removal of an association between a device identifier and an assigned probe identifier if no position information is received from the probe device for a predetermined time period, e.g. between 10 and 20 minutes. Other embodiments relate to periodic extraction of probe objects from a data store, such that a probe object is stored for at most a predetermined time period, e.g. 24 hours, and the use of position information from probe objects having the same probe identifier to create a historic journey trace.

Claims

1. A computer implemented method for probe data management, comprising:

receiving substantially real-time position information indicative of a geographical position of a probe device and device identification information specifically identifying the probe device;

assigning probe identification information to the position information, wherein the probe identification information is an internal identifier for the probe data management system that identifies a source of the position information within a probe data management system, and wherein the assigning comprises replacing the device information specifically identifying the probe device with the probe identification information, thereby configuring the position information to be used in subsequent operations without revealing the device information specifically identifying the probe device;

temporarily storing, in an entry in a data store, an association between the device identification information and the assigned probe identification information; and

removing, from the data store, the stored association between the device identification information and the probe identification information when no position information is received from the probe device for a predetermined time period.

2. The method of claim 1, comprising, upon receipt of position information from a probe device, determining if there is a stored association between device identification information identifying the probe device and probe identification information.

3. The method of claim 2, comprising, when a stored association is determined to exist, retrieving the stored probe identification information and assigning the retrieved probe identification information to the position information.

4. The method of claim 1, wherein the data store is accessible to a processing device arranged to receive the position information from the probe device.

5. The method of claim 1, wherein the predetermined time period after which the association is removed if no position information is received from the probe device is between 1 and 30 minutes.

6. The method of claim 1, comprising generating a probe object comprising:

the probe identification information; and

the position information associated with the probe identification information, and communicating the probe object to one or more processing devices for further processing.

7. The method of claim 6, comprising receiving a plurality of probe objects, and temporarily storing the probe objects in the data store.

8. The method of claim 7, comprising periodically extracting probe objects from the data store, and using the position information from probe objects having the same probe identification information to create a historic journey trace for storage in a trace data store.

10. The method of claim 7, wherein a probe object is stored in the data store for at most a predetermined time period.

11. The method of claim 10, wherein the predetermined time period for which the probe object is at most stored is greater than the predetermined time period after which the record of the association between the device identification information and the probe identification information is removed if no position information is received from the probe device.

15. A non-transitory computer readable medium comprising instructions which, when executed by at least one processor of a system, cause the system to operate according to the method of claim 1.

16. The method of claim 7, wherein a probe object is stored in the data store for at most between 12 and 48 hours.

9. A computer implemented method for probe data management, comprising:

receiving a plurality of probe objects, each probe object comprising substantially real-time position information indicative of a geographical position of a probe device and probe identification information identifying a source of the position information within a probe data management system, wherein the probe data management system comprises a record of an association between each piece of probe identification information and device identification information that specifically identifies the probe device that was the source of corresponding received real-time position information, and wherein the probe identification information was previously assigned to the position information in replacement of device information specifically identifying the probe device, thereby configuring the position information to be used in subsequent operations without revealing the device information specifically identifying the probe device;

temporarily storing the received probe objects in a data store;

periodically extracting probe objects from the data store; and

using the position information from probe objects having the same probe identification information to create a historic journey trace.

17. The method of claim 9, wherein a probe object is stored in the data store for at most a predetermined time period.

18. The method of claim 17, wherein the predetermined time period for which the probe object is at most stored is greater than the predetermined time period after which the association between the device identification information and the probe identification information is removed if no position information is received from the probe device.

19. The method of claim 9, wherein a probe object is stored in the data store for at most between 12 and 48 hours.

20. A non-transitory computer readable medium comprising instructions which, when executed by at least one processor of a system, cause the system to operate according to the method of claim 9.

12. A probe data management system, comprising:

a processing device; and

a first data store, the processing device being arranged to;

receive substantially real-time position information indicative of a geographical position of a probe device and device identification information specifically identifying the probe device;

assign probe identification information to the position information, wherein the probe identification information is an internal identifier for the probe data management system that identifies a source of the position information within the probe data management system, and wherein the assigning comprises replacing the device information specifically identifying the probe device with the probe identification information, thereby configuring the position information to be used in subsequent operations without revealing the device information specifically identifying the probe device;

temporarily store, in an entry in the first data store, an association between the device identification information and the assigned probe identification information; and

remove, from the first data store, the stored association between the device identification information and the probe identification information when no position information is received from the probe device for a predetermined time period.

13. The system of claim 12, wherein the processing device is arranged, upon receipt of position information from a probe device, to determine if there is a stored association between device identification information identifying the probe device and probe identification information.

14. The system of claim 13, wherein the processing device is arranged, when a stored association is determined to exist, to retrieve the stored probe identification information and assign the retrieved probe identification information to the position information.