Deleting unnecessary map data

• US 9,268,741 B1
• Filed: 06/07/2013
• Issued: 02/23/2016
• Est. Priority Date: 06/07/2013
• Status: Active Grant

• Current Assignee: Lytx, Inc.
• Original Assignee: Lytx, Inc.
• Inventors: Lambert, Daniel, Peter, Brendan
• Primary Examiner(s): Marc-Coleman, Marthe
• Application Number:
  US13/912,812
• Time in Patent Office: 991 Days
• Field of Search: 701/45, 701/527, 701/532, 701/410, 701/450, 701/409, 455/456.1, 455/561, 455/435.3, 455/411, 455/436, 705/14.56, 370/342, 370/329
• US Class Current: 1/1
• CPC Class Codes: G01C 21/387 Organisation of map data, e.g. version management or database structures
• CPC Class Codes: G01S 19/01 Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
• CPC Class Codes: G07C 2009/00976 card
• CPC Class Codes: G07C 9/00896 specially adapted for particular uses

Abstract

A system for deleting map data comprises an interface and a processor. The interface is configured to determine a location associated with a device. The processor is configured to determine one or more map bundles to delete based at least in part on the location and delete the one or more map bundles.

Claims

1. A system for deleting map data, comprising:

an interface configured to;

determine a location associated with a device in the event that the device is initialized, wherein the device comprises a vehicle event recorder, wherein determining the location comprises;

determining whether to use the device;

in the event that it is determined to use the device to determine the location associated with the device, detecting hardware of the device comprising a type of modem in the device, wherein detecting hardware of the device comprises directly querying the modem to determine the type of modem, wherein detecting the hardware of the device comprises determining whether the type of modem in the device is CDMA;

in the event that it is determined to not use the device, determining whether to use a network to determine the location;

and

a processor configured to;

determine one or more map bundles to delete based at least in part on the location, wherein the one or more map bundles were preloaded onto the device, wherein each of the one or more map bundles comprises a set of map data specific to a region used by the vehicle event recorder; and

delete the one or more map bundles.

2. The system of claim 1, wherein detecting the hardware of the device further comprises determining whether the type of the modem comprises GSM.

3. The system of claim 2, wherein in the event that the type of modem is a GSM modem, determining a stored information.

4. The system of claim 3, wherein the stored information comprises one or more of the following:

a mobile country code or identifier for a SIM, an embedded SIM, or a R-UIM.

5. The system of claim 1, wherein determining the location further comprises determine the location using a network.

6. The system of claim 5, wherein determining the location using the network comprises listening to a network broadcast and receiving an indication of the location of the device.

7. The system of claim 1, wherein determining the location comprises determine the location using a 3^rd party solution.

8. The system of claim 7, wherein determining the location using the 3^rd party solution comprises one of the following:

a WiFi location determination, a television broadcast signal location determination, an internet protocol address based location, or a cellular tower location.

9. The system of claim 7, wherein determining the location using the 3^rd party solution comprises a GPS location solution.

10. The system of claim 9, wherein the GPS location solution comprises determining whether the GPS location solution has sufficient accuracy.

11. The system of claim 7, wherein determining the location comprises determining a bounding box.

12. The system of claim 1, wherein a map bundle comprises a data version identifier.

13. The system of claim 12, wherein a data version identifier comprises one or more of the following:

vendor identifier, a product identifier, a version identifier, or a region identifier.

14. The system of claim 1, wherein the location is associated with one or more map bundles.

15. The system of claim 14, wherein the one or more map bundles to delete comprise map bundles not associated with the location.

16. The system of claim 1, further comprising determining whether an update is required.

17. The system of claim 16, wherein, in the event that an update is required, the map bundles remaining on the device are determined.

18. The system of claim 16, wherein, in the event that an update is required, the map bundles remaining on the device are updated.

19. The system of claim 1, wherein a memory space that previously stored the one or more map bundles is freed for other use or for general use.

20. The system as in claim 1, wherein in the event multiple modem types are detected, the one or more map bundles of a union of locations indicated by the multiple modem types is kept and not deleted.

21. The system as in claim 1, wherein in the event that the type of modem in the device is CDMA, the location is assumed to be United States/Canada.

22. A method for deleting map data, comprising:

determining, using a processor, a location associated with a device in the event that the device is initialized, wherein the device comprises a vehicle event recorder, wherein determining the location comprises;

determining whether to use the device;

in the event that it is determined to use the device to determine the location associated with the device, detecting hardware of the device comprising a type of modem in the device, wherein detecting hardware of the device comprises directly querying the modem to determine the type of modem, wherein detecting the hardware of the device comprises determining whether the type of modem in the device is CDMA;

in the event that it is determined to not use the device, determining whether to use a network to determine the location;

in the event that it is determined to use the network, determining the location of the device using the network;

determining one or more map bundles to delete based at least in part on the location, wherein the one or more map bundles were preloaded onto the device, wherein each of the one or more map bundles comprises a set of map data specific to a region used by the vehicle event recorder; and

deleting the one or more map bundles.

23. A computer program product for deleting map data, the computer program product being embodied in a non-transitory computer readable storage medium and comprising computer instructions for:

determining a location associated with a device in the event that the device is initialized, wherein the device comprises a vehicle event recorder, wherein determining the location comprises;

determining whether to use the device;

in the event that it is determined to use the device to determine the location associated with the device, detecting hardware of the device comprising a type of modem in the device, wherein detecting hardware of the device comprises directly querying the modem to determine the type of modem, wherein detecting the hardware of the device comprises determining whether the type of modem in the device is CDMA;

in the event that it is determined to not use the device, determining whether to use a network to determine the location;

determining one or more map bundles to delete based at least in part on the location, wherein the one or more map bundles were preloaded onto the device, wherein each of the one or more map bundles comprises a set of map data specific to a region used by the vehicle event recorder; and

deleting the one or more map bundles.