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Reference pointer for a compass display

DC
  • US 5,381,603 A
  • Filed: 07/27/1993
  • Issued: 01/17/1995
  • Est. Priority Date: 11/08/1991
  • Status: Expired due to Term
First Claim
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1. A display for an electronic compass comprising:

  • display means for displaying heading information, said display means having an array of pointer shapes substantially invisible unless activated; and

    control means for selectively activating said pointer shapes, said control means comprising memory means for storing a reference heading measured in response to a user signal, said reference heading being the current heading at the time of said user signal;

    said control means configured to selectively activate said pointer shapes to provide a reference pointer pointing in the direction of said reference heading as the compass moves and current heading changes.

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