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Keypads for electrical devices

  • US 6,756,969 B2
  • Filed: 05/07/2003
  • Issued: 06/29/2004
  • Est. Priority Date: 10/31/2000
  • Status: Expired due to Term
First Claim
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1. An electrical device comprising:

  • a body;

    a display disposed in the body for the display of images and data;

    angular orientation measurement means which can measure the angular orientation of the keymat with respect to the body;

    a keypad in which the keypad is rotatable with respect to the body;

    an interchangeable keymat coupled to the keypad, wherein the keymat defines a plurality of individual numerical keys and a plurality of pressure sensitive areas which detect key presses and produce corresponding electrical signals; and

    in which the plurality of individual numeral keys and the navigation key are keyed together so that are rotatable together.

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