Patent ID: 6299280
Filing Date: 2001-10-09
Classification: B41J,G08C,H04W

Abstract:
A method of transmitting binary information between a first device carried by a first body and a second device carried by a second body movable with respect to the first body along a path within a given range of movement, the method comprising the steps of:providing at least one first electrically conductive main plate on the first body along the path of the second body and a second electrically conductive main plate on the second body so that the first and second main plates remain opposite each other, at a constant spacing between each other, when there is a relative movement of the second body with respect to the first body within the range of movement along the path, such that the first and second main plates form a main capacitor with a constant capacitance; andtransmitting information from one of the first and second devices to the other by:coding the information into at least one binary coded signal comprising a clock signal,transmitting the coded signal by applying the coded signal to one of the first and second main plates of the main capacitor,collecting a received signal at the other of the first and second main plates of the main capacitor, anddecoding the received signal.