Patent ID: 7199789
Filing Date: 2007-04-03
Classification: G06F,H03K,Y02D

Abstract:
1. An input apparatus having an electrostatic sensor, comprising: clock signal generating means for generating clock signals; delaying means for generating delayed signals by delaying signal rise times of the clock signals according to a capacitance detected when a human appendage approaches or contacts the electrostatic sensor; AND means for receiving the clock signals and the delayed signals as input signals and outputting the clock and delayed signals as an output signal; and smoothing means for smoothing and outputting an output of the AND means, wherein the delaying means extends a pulse length of a first clock signal generated at the clock signal generating means to a length required for obtaining an intended output from the smoothing means when the electrostatic sensor is started up by the human appendage contacting the electrostatic sensor in a standby mode with no clock signal output.