Apparatus for visually indicating the current location of an aut

Details Apparatus for visually indicating the current location of an aut Apparatus for visually indicating the current location of an aut

1982-08-16

1985-05-14

Groody, James J.

Communications: electrical

Vehicle position indication

Map display

73178R, 73504, 364457, 364460, 34030915, G08G 112

Patent

active

045175659

ABSTRACT:
A current location indicating apparatus for use in an automotive vehicle wherein a current location of the automotive vehicle is arithmetically obtained in terms of two-dimensional coordinates by a signal processing unit on the basis of the output from a distance detecting unit and the output from a bearing detecting unit, and the current location of the vehicle is visually indicated on the screen of a display from the thus-obtained data in connection with the current location thereof. The apparatus comprises, in operative combination, two different types of bearing detecting units, one being of a rate gyroscope type and the other being of an earth magnetism sensor type, and a bearing signal switching unit providing a selective switching function of the outputs from the two types of bearing detecting units.

REFERENCES:
patent: 4032758 (1977-06-01), Lewis
patent: 4347730 (1982-09-01), Fisher
patent: 4402050 (1983-08-01), Tagami

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