GPS receiver powered by interface signals
First Claim
1. A Global Positioning System (GPS) receiving apparatus including:
- a converter for receiving a logic interface signal having logic levels of 1 and 0 for at least one of (i) data and (ii) control information and converting energy in said interface signal into operating power; and
a GPS receiver connected to the converter for using said operating power for receiving GPS satellite signals and providing GPS-derived location information.
2 Assignments
0 Petitions
Accused Products
Abstract
A Global Positioning System (GPS) receiving apparatus that is powered by a control or data interface signal from a computing apparatus. The GPS receiving apparatus includes a GPS receiver for receiving GPS satellite signals and providing GPS-derived location information and a converter for converting the interface signal to operating power signal for operating the GPS receiver. Optionally, the GPS receiver includes a power controller for controlling a duty cycle of the operating power in the GPS receiver in order to not exceed the power available from the interface signal. The interface signal is transmitted according to an interface standard such as RS232, RS422, or PC parallel.
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Citations
26 Claims
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1. A Global Positioning System (GPS) receiving apparatus including:
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a converter for receiving a logic interface signal having logic levels of 1 and 0 for at least one of (i) data and (ii) control information and converting energy in said interface signal into operating power; and a GPS receiver connected to the converter for using said operating power for receiving GPS satellite signals and providing GPS-derived location information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A Global Positioning System (GPS) receiving system including:
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a converter for receiving a logic interface signal having logic levels of 1 and 0 for at least one of (i) data and (ii) control information and converting energy in said interface signal into operating power; a GPS receiver for using said operating power for receiving GPS satellite signals and providing GPS-derived location information; and a computing apparatus for providing said interface signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification