Mobile object navigation system
Patent 5025261 Issued on June 18, 1991. Estimated Expiration Date: 
January 16, 2010. 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.
January 16, 2010. 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 ReferencesSatellite-based position-determining system Patent #: 4918609 InventorsApplicationNo. 464141 filed on 01/16/1990US Classes:342/357.09With transmission of location-indicative information to or from a remote stationExaminersPrimary: Blum, Theodore M.Attorney, Agent or FirmInternational ClassesH04B 007/185G01S 005/02 Foreign Application Priority Data1989-01-18 JPAbstractA mobile navigation system using a communication system between at least one mobile object and a key station. The navigation system includes a unit mounted on the mobile object for determining the position of the mobile object, and a unit mounted on the mobile object for transmitting data representative of the determined position to the key station via the communication system. The navigation system further includes a data base unit mounted in the key station for storing map data, a unit mounted in the key station for deriving map data of an area including the position of the mobile object from the data base unit, in response to the transmitted position data, a unit mounted in the key station for transmitting data including the derived map data to the mobile object via the communication system, and a unit mounted on the mobile object for displaying a composite image composed of the position data of the mobile object and the map data, in response to the transmitted data from the key station. | |
