Electronic module for sensing pen motion

A system of providing writing-related movement information to a computing device, comprising:

• an electronic module fully contained within a single container having means for being selectively and removably coupled to a standard writing instrument of conventional size, shape and operation, the electronic module fully contained within the single container including all components necessary for generating data for translation by a remote computing device into at least x and y position data, the components including at least a ballistic generator means for generating movement information as a result of movement of the writing instrument;
• means for providing the electronic movement information to the remote computing device;
• and
• means for filtering the electronic movement information to form filtered data.

A writing system, comprising:

• a single container that selectively and removably couples to a standard writing instrument that writes on conventional paper, the standard writing instrument having a conventional size, shape and operation;
• an electronic module fully contained within the single container, the electronic module including all components necessary for generating x and y position data, including at least a dual-axis accelerometer that generates movement information as a result of movement of the standard writing instrument, and a transmitter that communicates data corresponding to the movement information to a remote computing device for processing as digital ink such that no movement data is stored within the single container;
• and
• calibration mechanism for compensating for a user's particular handwriting style and translating the generated x and y position data into desired position data, wherein the calibration mechanism receives position data according to movement of the standard writing instrument corresponding to a predetermined pattern and, from the position data received by the calibration mechanism corresponding to the predetermined pattern, comparing the received position data to actual position data for the predetermined pattern, thereby generating calibration information for stretching and skewing received position data to compensate for the user's particular handwriting style.