Transmission of Information to a System Utilizing a GPS Device
First Claim
1. A system for transmitting non-GPS information for reception by a global positioning system (GPS) receiver, the system comprising:
- a PRN code selector adapted to select one or more predefined pseudo-random noise (PRN) codes from a set of PRN codes used to transmit GPS signals;
a GPS transmitter adapted to receive the non-GPS information and produce a GPS compatible signal containing the non-GPS information according to one or more of the selected PRN codes; and
wherein the non-GPS information includes information adapted to interpreted by an intended receiving device.
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Accused Products
Abstract
A system for transmitting non-GPS information for reception by a global positioning system (GPS) receiver, the system including a processor, a memory coupled to the processor and including computer-readable instructions configured to, when executed by the processor, cause the processor to receive the non-GPS information, determine an available pseudo-random noise (PRN) code, spread the non-GPS information using the available PRN code to provide a spread signal, modulate a GPS carrier frequency using the spread signal to produce a GPS compatible signal, and a terrestrial transmitter configured to transmit the GPS compatible signal.
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Citations
46 Claims
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1. A system for transmitting non-GPS information for reception by a global positioning system (GPS) receiver, the system comprising:
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a PRN code selector adapted to select one or more predefined pseudo-random noise (PRN) codes from a set of PRN codes used to transmit GPS signals; a GPS transmitter adapted to receive the non-GPS information and produce a GPS compatible signal containing the non-GPS information according to one or more of the selected PRN codes; and wherein the non-GPS information includes information adapted to interpreted by an intended receiving device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for transmitting non-GPS information to a global positioning system (GPS) receiver, the system comprising:
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selecting one or more predefined pseudo-random noise (PRN) codes from a set of PRN codes used to transmit GPS signals; receiving by a GPS transmitter, the non-GPS information; and transmitting a GPS compatible signal containing the non-GPS information according to one or more of the selected PRN codes; wherein the non-GPS information includes information adapted to interpreted by an intended receiving device. - View Dependent Claims (23, 24, 25, 26, 37, 39, 40, 41, 42, 43, 44, 45, 46)
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38. The method according to claim 27 wherein the duty cycle is 10%-30% of the duty cycle of the corresponding GPS satellite for the selected PRN code.
Specification