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Touch sensitive mechanical keyboard

  • US 10,585,493 B2
  • Filed: 12/12/2008
  • Issued: 03/10/2020
  • Est. Priority Date: 12/12/2008
  • Status: Active Grant
First Claim
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1. An input device comprising:

  • multiple mechanical keys, each mechanical key of the multiple mechanical keys having a surface configured to be contacted by an object;

    a touch sensing circuitry configured to determine that the surface of said each mechanical key of the multiple mechanical keys has been pressed by the object; and

    a plurality of touch nodes associated with said each mechanical key of at least some of the multiple mechanical keys, wherein the plurality of touch nodes includes a first touch node and a second touch node;

    wherein the first touch node and the second touch node associated with a first key are configured for concurrently detecting a first position of a contact on the surface of the first key based on capacitive coupling between the object and the first touch node and concurrently detecting a second position, different from the first position, of the contact on the surface of the first key based on the capacitive coupling between the object and the second touch node; and

    wherein the input device including the touch sensing circuitry is configured for generating signals representing a portion of an image of touch based on the detected first and second positions, the image of touch generated over the first key and at least a second key of the multiple mechanical keys.

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