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Capacitive detection systems, modules and methods

  • US 7,945,399 B2
  • Filed: 08/10/2010
  • Issued: 05/17/2011
  • Est. Priority Date: 08/13/2007
  • Status: Active Grant
First Claim
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1. A capacitive detection method, comprising:

  • for at least one capacitive sensor in a capacitive sensing area, receiving data which is a monotonic function of capacitance of said capacitive sensor;

    checking whether for at least one of said at least one capacitive sensor, received data or a function thereof has a predetermined relationship with at least one predetermined level; and

    if, for at least one of said at least one capacitive sensor, received data or a function thereof has said predetermined relationship with said at least one predetermined level, then detecting that an object is present near said capacitive sensing area.

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