Method and apparatus for generating an indication of loss of pos

Details Method and apparatus for generating an indication of loss of pos Method and apparatus for generating an indication of loss of pos

1997-03-03

2000-11-21

Cuchlinski, Jr., William A.

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

701214, 3404255, 340438, 34235701, 34235702, 34235708, G06F16500

Patent

active

061515515

ABSTRACT:
The present invention provides an assessment, in real-time, of the integrity of the positioning solution and navigation sensors used to support an Emergency Calling System (ECS) that integrates positioning and cellular phone technology. This integrity information is used, via a warning light displayed to the driver, to indicate when the system will not support Emergency Calling to the accuracies required. The present invention discusses that at least two types of warnings may be generated and provided to the user. The first being an indication that the positioning accuracy will no longer support Emergency Calling. The second being an indication that a sensor or subsystem of the Emergency Call positioning system is malfunctioning and should be serviced as soon as possible whereby such a malfunction may lead to eventual failure of the system.

REFERENCES:
patent: 5416712 (1995-05-01), Geier et al.
patent: 5436632 (1995-07-01), Sheynblat
patent: 5630209 (1997-05-01), Wizgall et al.
patent: 5862511 (1999-01-01), Croyle

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