Techniques for securing live positioning signals
AssigneeOpenTV, Inc.
InventorsScott Jantz, Nir Livay
Life of this patent
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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.
Claims19
(canceled)
A method for validating positioning signals, the method comprising:
- receiving, over a first network, at least one positioning signal from a broadcast source;
- generating a first portion of validity data for validation of an identity of the broadcast source;
- generating a second portion of the validity data for validation of the at least one positioning signal received from the broadcast source;
- including the first portion of the validity data and the second portion of the validity data in at least one message;
- and
- transmitting, over a second network, the at least one message including the first portion of the validity data and the second portion of the validity data to at least one device.
An apparatus for validating positioning signals, the apparatus comprising:
- one or more memories;
- and
- one or more processors coupled to the one or more memories and configured to:
- receive at least one positioning signal from a broadcast source via a first network;
- generate a first portion of validity data for validation of an identity of the broadcast source;
- generate a second portion of the validity data for validation of the at least one positioning signal received from the broadcast source;
- include the first portion of the validity data and the second portion of the validity data in at least one message;
- and
- output, for transmission over a second network, the at least one message including the first portion of the validity data and the second portion of the validity data to at least one device.
Dependencies are inferred from the claim text.