GPS receiver with encrypted data transmission

Details GPS receiver with encrypted data transmission GPS receiver with encrypted data transmission

2007-06-19

2007-06-19

Phan, Dao L. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C342S357490

Reexamination Certificate

active

10540317

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.

REFERENCES:
patent: 6317500 (2001-11-01), Murphy
patent: 2002/0136407 (2002-09-01), Denning et al.
patent: 2003/0108202 (2003-06-01), Clapper
patent: 2003/0195808 (2003-10-01), Brown et al.
patent: 2004/0190715 (2004-09-01), Nimura et al.
patent: 0 508 405 (1992-10-01), None
patent: 1 241 553 (2002-09-01), None
“A Direct RF Sampling Multifrequency GPS Receiver”, by Thor et al., IEEE 2002.
“Real-time Software Radio Architectures for GPS Receivers”, by Akos et al., GPS World, Jul. 2001.

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