Patent ID: 6731270
Filing Date: 2004-05-04
Classification: B06B,G06F

Abstract:
A transmitter pen comprising:piezoelectric transducer formed from a flexible film having an inner surface and an outer surface, the transducer having a bottom edge and a top edge, the outer surface extending from the bottom edge to the top edge, the transducer also having a hollow inner region defined between the bottom edge and the top edge, the inner surface extending from the bottom edge to the top edge within the hollow inner region, an outer conductive layer deposited on the outer surface of the film, and an inner conductive layer deposited on the inner surface of the film, the piezoelectric transducer having an axis extending from the bottom edge to the top edge within the hollow inner region; a writing tip which extends through the hollow inner region and beyond the top edge; means for activating the inner conductive layer and the outer conductive layer by an applied voltage; such that the piezoelectric transducer resonates upon the activation to produce an output signal waveform that is transmitted radially outward from the outer conductive layer about the axis of the transducer.