Differential GPS receiver system linked by infrared signals
Patent 5589835 Issued on December 31, 1996. Estimated Expiration Date: 
December 20, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 20, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCordless SPS smart antenna device Differential GPS landing assistance system Patent #: 5361212 InventorsAssigneeApplicationNo. 359604 filed on 12/20/1994US Classes:342/357.03Using differential correctionExaminersPrimary: Issing, Gregory C.Attorney, Agent or FirmInternational ClassG01S 005/02AbstractA 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. | |
