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De Lorenzo, CA
David De Lorenzo, Palo Alto, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090066574 | ARRANGEMENTS FOR SATELLITE-BASED NAVIGATION AND METHODS THEREFOR - Various systems, methods and devices are implemented for processing received signals. Consistent with one such embodiment, a method is implemented for use in a signal-communication receiver having a carrier-tracking loop and a processor for operating adaptive algorithms. The method involves interpreting a received signal using space time adaptive processing (STAP). A convergence speed of the adaptive algorithms is set based on a noise bandwidth of a phase-locked loop (PLL) in the carrier-tracking loop. A carrier-phase de-rotation constraint is implemented into weight parameters of the STAP to preserve spatial and temporal degrees of freedom in the STAP. | 03-12-2009 |
| 20100278335 | Arrangements for Location-Based Security Systems and Methods Therefor - Aspects are applicable to secure encryption such as in the generation of a cryptographic key from location information as may be useful in portable/wireless communication devices. As an example, one embodiment is implemented as a method of generating cryptographic keys from location information derived from a signal received from a publicly-used wireless communication system. The location information is protected from fraudulently generated signals using direction of arrival of the received signal. The method attempts to verify that the direction of arrival corresponds to an expected direction of arrival for a received signal of the primary signal type, and in response to the direction of arrival being verified for the direction of arrival, and then enables use of an encryption key that is generated from positional information derived from the received signal | 11-04-2010 |
David S. De Lorenzo, Palo Alto, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090195354 | Authenticating a signal based on an unknown component thereof - Authentication of a signal, signal | 08-06-2009 |
| 20090195443 | Authenticating a signal based on an unknown component thereof - Authentication of a signal, signal | 08-06-2009 |
| 20100241864 | AUTHENTICATING AN INTEGRATED CIRCUIT BASED ON STORED INFORMATION - Exemplary embodiments provide methods and systems of authenticating an integrated circuit (IC). The manufacturing location of an IC is authenticated by storing in the IC a local signature derived from a GPS signal that was received at the manufacturing location at the time of manufacture. A remote signature is derived from a GPS signal that was received at a remote site nearly simultaneously as the reception of the GPS signal at the manufacturing location. The local signature is compared to the remote signature at an authentication site to determine the authenticity of the IC. | 09-23-2010 |
| 20100283671 | Receiver with means for ensuring bona fide of received signals - A receiver that receives a plurality of signals that are modulated with a common carrier, where each signal of said signals originates at a different source and experiences a transit delay and Doppler frequency shift before reaching the receiver, and where the transit delay and Doppler frequency shift are related to position and movement of each of the respective sources. The receiver includes means, such as a directional antenna, to ensure that the received signals are bona fide, or at least not subject to the same bogus signal or signals to which a second receiver may be subjected. | 11-11-2010 |
| 20100284441 | Receiver for GPS-like signals - A module for receiving a plurality of signals that are modulated with a common carrier, where each of the signals includes information that enables a determination of a distance from said receiver to a source that transmits the signal, and outputs to outside the module a digital representation of a downshifted replica of the received signals or, alternatively, outputs a stored and delayed version of the downshifted replica of the received signals together with information about the delay. | 11-11-2010 |
| 20100284442 | Authenticating a signal based on an unknown component thereof - Authentication of a signal, signal | 11-11-2010 |
Truc De Lorenzo, Palo Alto, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100278335 | Arrangements for Location-Based Security Systems and Methods Therefor - Aspects are applicable to secure encryption such as in the generation of a cryptographic key from location information as may be useful in portable/wireless communication devices. As an example, one embodiment is implemented as a method of generating cryptographic keys from location information derived from a signal received from a publicly-used wireless communication system. The location information is protected from fraudulently generated signals using direction of arrival of the received signal. The method attempts to verify that the direction of arrival corresponds to an expected direction of arrival for a received signal of the primary signal type, and in response to the direction of arrival being verified for the direction of arrival, and then enables use of an encryption key that is generated from positional information derived from the received signal | 11-04-2010 |