Techniques for securing live positioning signals
AssigneeOpenTV, Inc.
InventorsScott Jantz, Nir Livay
Life of this patent
Estimating the term…
Abstract
A pay television satellite broadcast includes validation data that can be used to validate authenticity of live global positioning system (GPS) data. The validation data may be included within entitlement messages and encrypted for security and selective reception by authorized receivers. A navigation system may compute checksums of received live GPS data and compare with the validation data for a match. A decision about whether or not to use the live GPS data may be taken based on whether or not the computed checksums match the validation data received via the pay television satellite broadcast signals.
Claims20
A method for validating positioning signals, the method comprising:
- receiving one or more positioning signals, the one or more positioning signals being a subset of positioning signals broadcast by a cellular network;
- receiving at least one reference signal over a second network that is different from the cellular network, the at least one reference signal including at least a signature representing the positioning signals broadcast by the cellular network;
- producing a validation signal based on the at least one reference signal;
- determining, based on the validation signal, that the one or more positioning signals received over the cellular network are valid;
- and
- controlling a vehicle or device based on the one or more positioning signals.
A system comprising:
- a first network interface configured to receive one or more positioning signals, the one or more positioning signals being a subset of positioning signals broadcast by a cellular network;
- a second network interface configured to receive at least one reference signal over a second network that is different from the cellular network, the at least one reference signal including at least a signature representing the positioning signals broadcast by the cellular network;
- and
- a reception system connected to the first network interface and the second network interface, the reception system being configured to:
- produce a validation signal based on the at least one reference signal;
- determine, based on the validation signal, that the one or more positioning signals received over the first network interface are valid;
- and
- cause control of a vehicle or device based on the one or more positioning signals.
A device comprising:
- a processor;
- and
- a memory connected to the processor;
- wherein the memory stores instructions that, when executed by the processor, cause the processor to:
- input one or more positioning signals, the one or more positioning signals being a subset of positioning signals broadcast by a cellular network;
- produce a validation signal based on at least one reference signal received over a second network different from the cellular network, the at least one reference signal including at least a signature representing the one or more positioning signals broadcast by the cellular network;
- receive a determination, based on the validation signal, that the one or more positioning signals broadcast by the cellular network are valid;
- and
- control a vehicle or device based on the one or more positioning signals.
Dependencies are inferred from the claim text.