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Writing system

  • US 7,508,384 B2
  • Filed: 06/08/2005
  • Issued: 03/24/2009
  • Est. Priority Date: 06/08/2005
  • Status: Expired due to Fees
First Claim
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1. A writing system comprising:

  • a housing;

    a three dimensional accelerometer, supported by said housing, for of detecting acceleration of the accelerometer in any direction, and having an accelerometer output;

    a three dimensional rate gyroscope, supported by said housing, for detecting angular position orientation changes along all planes, and having a gyroscope output;

    a microcontroller having an input connected to said accelerometer output and said gyroscope output and configured to convert said accelerometer output and said gyroscope output into a two dimensional line path as a representation of a path of said housing during writing, anda surface detect sensor, supported by said housing and connected to said input for indicating a start and a finish of said two dimensional line path as a beginning and ending of writing.

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