Navigation system allowing real-time coordination of the displacement of mobiles travelling out of direct line of sight

Patent 5923294 Issued on July 13, 1999. Estimated Expiration Date:

December 22, 2017. 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.

Abstract Claims Description Full Text

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Inventors

Assignee

Thomas - CSF

Application

No. 973744 filed on 12/22/1997

US Classes:

342/457Land vehicle location (e.g., bus, police car

Examiners

Primary: Issing, Gregory C.

Attorney, Agent or Firm

Oblon, Spivak, McClelland, Maier & Neustadt, P.C.

International Class

G01S 003/02

Foreign Application Priority Data

1995-06-23 FR

Abstract

A navigation system having a terminal provided at each mobile station. Each terminal includes a locator for locating a mobile station, a display for displaying its travel relative to the reference direction, an indicator to indicate a common reference direction to both mobile stations with the indicator being coupled to the display, a travel data communicator and a processor to process data from the indicator, the locator and the communicator and display it on the display. At least one of the two mobile stations further includes a display for displaying the travel of the second mobile station relative to the first and an input unit for inputting a predetermined angle for defining how the direction of travel of the second mobile station should be corrected relative to the new direction of travel of the first mobile station. The correction is transmitted to the second mobile station by the travel data communicator of the first and second mobile stations.