Differential GPS receiver system linked by infrared signals
First Claim
1. A GPS receiver system to determine and display a geographical differential Global Positioning System (DGPS) location where the system is interconnected by an airwave infrared (IR) link, the system including:
- a DGPS radio receiver to receive an airwave radio frequency DGPS signal from a source external to the system, said airwave DGPS signal including DGPS corrections, and to provide an airwave infrared (IR) DGPS signal having data indicative of said DGPS corrections;
a GPS Smart Antenna module to receive an airwave GPS signal including GPS location information from a plurality of GPS satellites, to receive said IR DGPS signal, to use said DGPS corrections and said GPS location information to compute said DGPS location, said DGPS location having a better location accuracy better than a location computed from said GPS location information without said DGPS corrections, and to provide data indicative of said DGPS location in an airwave infrared (IR) module signal; and
a personal computing display to receive said IR module signal and said IR DGPS signal and to display said DGPS location in a form that is visibly or audibly perceptible to a human being.
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Accused Products
Abstract
A GPS receiver system to determine and display a geographical differential Global Positioning System (DGPS) location where the components of the system are interconnected with an airwave infrared (IR) link. The system includes a GPS Smart Antenna receiver module to determine the geographical location of the module, a DGPS radio receiver to receive an airwave radio frequency DGPS signal having DGPS correction information, and a personal computing display to run an application program and to display the geographical DGPS location and application information that is useful to a user. The GPS Smart Antenna receiver module and the DGPS radio receiver are switched on and off from the personal computing display through the airwave IR link.
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Citations
15 Claims
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1. A GPS receiver system to determine and display a geographical differential Global Positioning System (DGPS) location where the system is interconnected by an airwave infrared (IR) link, the system including:
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a DGPS radio receiver to receive an airwave radio frequency DGPS signal from a source external to the system, said airwave DGPS signal including DGPS corrections, and to provide an airwave infrared (IR) DGPS signal having data indicative of said DGPS corrections; a GPS Smart Antenna module to receive an airwave GPS signal including GPS location information from a plurality of GPS satellites, to receive said IR DGPS signal, to use said DGPS corrections and said GPS location information to compute said DGPS location, said DGPS location having a better location accuracy better than a location computed from said GPS location information without said DGPS corrections, and to provide data indicative of said DGPS location in an airwave infrared (IR) module signal; and a personal computing display to receive said IR module signal and said IR DGPS signal and to display said DGPS location in a form that is visibly or audibly perceptible to a human being. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for providing a geographical DGPS location of a GPS receiver system including a GPS Smart Antenna module, a DGPS radio receiver, and a personal computing display, the method including the steps of:
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providing, from a source external to said GPS receiver system, an airwave radio frequency DGPS signal including DGPS corrections usable to improve the accuracy of a geographical GPS location; receiving said airwave radio frequency DGPS signal in said DGPS radio receiver; converting said radio frequency DGPS signal into an electrical DGPS signal having data indicative of said DGPS corrections; transmitting, from said DGPS radio receiver, an airwave infrared (IR) DGPS signal having said DGPS corrections data; receiving said IR DGPS signal in said GPS Smart Antenna module; receiving, in said GPS Smart Antenna module, an airwave GPS signal having GPS location information from a plurality of GPS satellites; determining said DGPS location based upon said GPS location information and said DGPS corrections data; transmitting an airwave IR module signal having data indicative of said DGPS location from said GPS Smart Antenna module; receiving said IR module signal in said personal computing display; and displaying with said personal computing display said DGPS location in a form that is visibly or audibly perceptible to a human user. - View Dependent Claims (12, 13, 14, 15)
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Specification