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Accessing and selecting multiple key functions with minimum keystrokes

  • US 5,258,748 A
  • Filed: 08/28/1991
  • Issued: 11/02/1993
  • Est. Priority Date: 08/28/1991
  • Status: Expired due to Term
First Claim
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1. A calculating device comprising:

  • a display;

    a keyboard including menu keys corresponding to menu labels displayable on the display and a multi-function key having a primary function and a secondary function, the function selected depending on the duration the multi-function key is pressed; and

    a data processor coupled to the keyboard and the display for;

    (a) executing the primary key function if the multi-function key is pressed for less than a first time period;

    (b) displaying on the display a set of at least two menu labels corresponding to the secondary function if the multi-function key remains pressed for greater than the first time period, each of said at least two labels being displayed at the same time and representing an associated function;

    (c) assigning the function associated with each displayed menu label to the corresponding menu key; and

    (d) executing the associated function if the menu key is pressed.

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