Patent 7826525 was granted and assigned to Illinois Tool Works on November, 2010 by the United States Patent and Trademark Office.
A method for communicating data is disclosed. The method includes receiving a sequence of electrical pulses during an interval having a pre-determined time period, the sequence of electrical pulses representing a message from one of a plurality of devices, determining the number of received electrical pulses in the sequence of electrical pulses, and decoding the message based on the determined number of electrical pulses received during the interval.