Pressure sensitive device.

摘要

A pressure sensitive device may be used in the characterisation of written signatures and includes X- and a Y-coordinate piezoelectric layers (11,5) overlying which are, respectively, X- and Y- coordinate electrode structures (13,3). As pressure from a stylus is applied to the coordinate electrode structures (13,3) the piezoelectric layers (11,5) generate signals indicative of the coordinate position of the stylus on the device. The device further includes a pressure pad active device (29) for providing data indicative of the pressure applied to the device by the stylus. <IMAGE> <IMAGE>