FILE CREATION METHOD AND SYSTEM

• US 20110066667A1
• Filed: 05/15/2009
• Published: 03/17/2011
• Est. Priority Date: 05/22/2008
• Status: Active Grant

• Current Assignee: U-Blox AG (u-blox Holding AG)
• Original Assignee: U-Blox AG (u-blox Holding AG)
• Inventors: Peeters, Johan, Thomason, Graham, Yule, Andrew Thomas
• Granted Patent: US 9,384,215 B2
• Time in Patent Office: Days
• US Class Current: 707/822
• CPC Class Codes: G01S 5/0252 Radio frequency fingerprinting
• CPC Class Codes: G06F 16/29 Geographical information databases
• CPC Class Codes: G06F 16/58 Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

A file creation method comprising:creating file content at a particular location and time using a portable device; and obtaining data from wireless communication devices detectable by the portable device at the particular location and time thereby to obtain a set of data. The set of data identifies or enables identification of the wireless communication devices. The method further comprises associating the set of data and time with the file content to enable subsequent analysis to determine the particular location using a time-dependent database.

Claims

1. A file creation method, comprising:

creating file content at a particular location and time using a portable device;

obtaining data from wireless communication devices detectable by the portable device at the particular location and time thereby to obtain a set of data, the set of data identifying or enabling identification of the wireless communication devices;

associating the set of data and time with the file content to enable subsequent analysis to determine the particular location using a time-dependent database wherein the location is determined based on reference data for approximately the time associated with the file content.

2. A method as claimed in claim 1, wherein the set of data comprises a set of device identities of the detectable wireless communication devices.

3. A method as claimed in claim 1, wherein the set of data comprises a data which can be analysed to determine a set of device identities of the detectable wireless communication devices.

4. A method as claimed in claim 1, wherein creating file content comprises capturing an image and saving corresponding image file.

5. A method as claimed in claim 1, wherein the time associated with the file content comprises the time and date.

6. A method as claimed in claim 1, wherein the data further comprises signal strength, signal to noise ratio, Doppler, and error rate of the wireless communication device transmission.

7. A method as claimed in claim 1, wherein associating the set of data with the file content comprises embedding the data in the file structure.

8. A method as claimed in claim 1, wherein obtaining data from wireless communication devices detectable by the portable device is carried out by a second portable device.

9. A position stamping method, comprising;

creating a file using the method as claimed in claim 1;

analysing the associated identities using a time-dependent database in order to derive a location based on the reference in the database at the time associated with the file content; and

creating a file comprising the file content and the derived location.

10. A method as claimed in claim 9, wherein the analysis is carried out:

by the portable device at a different time to obtaining the identities, or

on a computer system to which the file content and associated information is provided.

11. A file creation system, comprising:

a portable device for creating file content at a particular location and time;

a wireless receiver for detecting wireless communication signals and obtaining data from wireless communication devices detectable by the portable device at the particular location thereby to obtain a set of data, the set of data identifying or enabling identification of the wireless communication devices;

a processor for associating the set of data and the time with the file content to enable subsequent analysis to determine the particular location using a time-dependent database wherein the location is determined based on the reference data in the database at the time associated with the file content.

12. A system as claimed in claim 11, wherein the device comprises a camera, and the file content comprises an image or image sequence.

13. A system as claimed in any claim 11, wherein the wireless receiver is part of a second portable device, and wherein the first portable device provides time information with the file content.

14. A position stamping system, comprising:

a file creation system as claimed in claim 11; and

a processor adapted to;

analyze the associated identities using a time-dependent database in order to derive a location based on the reference data in the database at the time associated with the file content; and

create a file comprising the file content and the derived location.