Patent ID: 9391541
Filing Date: 2016-07-12
CPC Classification: H02N,H02P,H04R,Y10T

Claim Text:
1. Electrostatic parallel plate actuator apparatus for generating sound, at least one attribute of which corresponds to at least one characteristic of a digital input signal sampled periodically, the apparatus comprising: at least one electrostatic parallel plate actuator device, each actuator device including: at least one planar electrode defining a second plane generally parallel to said first plane, said planar electrode being operative to apply a controlled temporal sequence of potential differences with at least one individual moving element from among said array of moving elements thereby to selectably generate said first electrostatic force; and a controller operative to receive said digital input signal and accordingly to control at least one of said at least one electrode and said individual moving element to apply said sequence of potential differences such that said sound represents said signal, wherein said apparatus also comprising at least one position sensor sensing the position of at least one moving element along its respective axis, and wherein said controller is operative to detect that at least one moving element has an aberrant moving pattern based on information provided by said at least one position sensor, the controller thereby marking the moving element as faulty and not utilizing said moving element further.