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METHODS AND APPARATUS FOR CAPACITIVELY DETECTING KEY MOTION AND FINGER PRESENCE ON KEYBOARD KEYS

  • US 20150193008A1
  • Filed: 01/09/2014
  • Published: 07/09/2015
  • Est. Priority Date: 01/09/2014
  • Status: Active Grant
First Claim
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1. A keyboard including a plurality of key assemblies configured to be pressed by an input object, wherein a subset of the plurality of key assemblies each comprises:

  • a key cap;

    a first electrode pair disposed underneath the key cap and configured to detect key motion in response to downward force applied by the input object; and

    a second electrode pair disposed underneath the key cap and configured to detect positional information about the input object interacting with the key cap.

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