Patent ID: 6715687
Filing Date: 2004-04-06
Classification: G06K

Abstract:
A pen for writing encoded lines, comprising:a handwriting pen body having a writing end; an ink reservoir in the body; a data and logic processing unit in the body that includes memory with identification data that uniquely identifies the pen; an ink jet writing head in the body in fluid communication with the reservoir, and in control communication with the processing unit; a global positioning system receiver in the body in data communication with the processing unit; a stylus extending from the wilting end of the body with a pressure transducer in signal communication with the processing unit for sensing pressure on the stylus; and logic in the data and logic processing unit that organizes data from the global positioning system receiver and the memory, and causes the processing unit to send a data stream to the writing head that produces a line of ink on a writing surface with embedded information encoded in the form of line segments of at least two different lengths, creating an encoded line during handwriting with the pen.