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Electronic pen, and control device and method thereof

  • US 8,154,536 B2
  • Filed: 04/17/2008
  • Issued: 04/10/2012
  • Est. Priority Date: 02/12/2002
  • Status: Active Grant
First Claim
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1. A control device for installation in an electronic pen provided with a pen stem and an associated force sensor, comprisinga comparator which is adapted to receive an analog measuring signal representative of a force of application of the electronic pen to a surface from the force sensor, to compare the analog measuring signal with a fixed reference signal and, based on the comparison, to issue a digital output signal,a converter which is adapted to receive the analog measuring signal and to convert this into a sequence of digital force values;

  • anda processor which is electrically connected to the comparator and the converter and which is adapted to selectively activate the converter, based on the digital output signal from the comparator.

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