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Computer input device with interactively illuminating keys

  • US 5,936,554 A
  • Filed: 08/01/1996
  • Issued: 08/10/1999
  • Est. Priority Date: 08/01/1996
  • Status: Expired due to Term
First Claim
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1. An interactive illuminated computerized system comprising:

  • a computer;

    an alphanumeric computer keyboard coupled to the computer and comprising a plurality of individually and selectively illuminable keys, each key comprising;

    a key cap capable of motion along a vertical axis, having an entirely translucent upper surface with a fixed key legend disposed thereon, and having a lower surface intersected by one or more ribs such that one or more underside cavities are defined; and

    ,a single light-emit diode (LED) positioned directly below one of the underside cavities of the keycap, the LED responsive to a turn-on signal received from the computer and a turn-off signal received from the computer to control illumination of the LED, the LED positioned along an axis coincident with the vertical axis of the motion of the key cap; and

    ,a bi-directional link coupling the computer to the keyboard for sending the turn-on signal and the turn-off signal for each key from the computer.

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