Apparatus for visually indicating the current location of an automotive vehicle
First Claim
1. A current location indicating apparatus for use in an automotive vehicle wherein a current location of said automotive vehicle is arithmetically obtained in terms of two-dimensional coordinates by a signal processing unit on the basis of the outputs from a travel distance detecting unit and 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, which comprises, in operative cooperation:
- two different types of bearing detecting means, one said bearing detecting means being of a rate gyroscope type and the other bearing detecting means being of an earth magnetism sensor type; and
bearing signal switching means for selectively switching between the outputs from said two types of bearing detecting means.
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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.
15 Citations
4 Claims
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1. A current location indicating apparatus for use in an automotive vehicle wherein a current location of said automotive vehicle is arithmetically obtained in terms of two-dimensional coordinates by a signal processing unit on the basis of the outputs from a travel distance detecting unit and 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, which comprises, in operative cooperation:
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two different types of bearing detecting means, one said bearing detecting means being of a rate gyroscope type and the other bearing detecting means being of an earth magnetism sensor type; and bearing signal switching means for selectively switching between the outputs from said two types of bearing detecting means. - View Dependent Claims (2, 3, 4)
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Specification