IP Library › Granted Patent US 7,233,282
Granted Patent B2
US 7,233,282 · App. 10/540,317 · Granted Jun 19, 2007

GPS receiver with encrypted data transmission

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Quick Facts
Patent No.
US 7,233,282
App. No.
10/540,317
Granted
Jun 19, 2007
Kind
B2
Abstract

A GPS receiver device is disclosed comprising a GPS antenna and a GPS RF front-end including an analogue to digital converter for receiving GPS signals and outputting GPS signal samples; and a processor for encrypting the GPS signal samples and transmitting the encrypted GPS signal samples to an external device. Also disclosed is a corresponding method of providing a position fix comprising the steps of connecting to a GPS receiver device and receiving encrypted GPS signal samples therefrom, decrypting the encrypted GPS signal samples and processing the decrypted GPS signal samples to determine a position fix; and a computer program, computer-readable storage medium and apparatus for the same.

Claims (10)

1. A method, operable in a computing system, of providing a position fix comprising the steps of:

connecting to a GPS receiver device;

receiving encrypted GPS signal samples therefrom, wherein the GPS receiver device is provided a variable encrypted key for encrypting received GPS data;

decrypting the encrypted GPS signal samples using a decryption key comparable to the encryption key; and

processing the decrypted GPS signal samples to determine a position fix.

2. A computer program comprising instructions for performing the method of claim 1 .

3. A computer-readable storage medium having recorded thereon data containing instructions for performing a method according to claim 1 .

4. Apparatus configured to perform a method according to claim 1 .

5. The method as recited in claim 2 , wherein the encryption key is provided by an external device.

6. The method as recited in claim 1 , wherein the encryption key is determined for each initiation of the computing system.