US 8,502,547 B2 | Capacitive sensor

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US 8,502,547 B2

Capacitive sensor

Tech Center:

2800 Semiconductors/Memory, Circuits/Measuring and Testing, Optics/Photocopying, Printing/Measuring and Testing

Examiner:

Vincent Q Nguyen

Art Unit:

2858 Printing/Measuring and Testing

Agent:

Baker Botts LLP

Inventors:

Harald Philipp

Assignee:

ATMEL CORPORATION

Priority:

10/20/06

Filed:

11/04/10

Granted:

08/06/13

Expiration:

04/01/27

Abstract

Method and apparatus are provided for a capacitive sensor. In an example, a capacitive sensor can include a first sensing element, a sensing channel operable to generate a first signal indicative of first capacitance between the sensing element and a system ground, and a processor responsive to a change in the first capacitance between the first sensing element and ground. The processor can be configured to adjust a parameter value based on a first duration of the change in the first capacitance.

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