Patent ID: 6181188
Filing Date: 2001-01-30
Classification: H03G

Abstract:
An apparatus for stabilizing the level of an output signal by controlling an output control unit according to a control signal, comprising:a switching unit having a first input to receive initial value data and a second input to receive average value data, the initial value data determining an initial value of the control signal when an input signal to the output control unit rises, the average value data being obtained from a moving average of the difference between reference value data and level data detected from the output signal of the output control unit after the input signal rises, said switching unit carrying out a switching from said initial value data to said average value data to be output from said switching unit when said moving average of the difference between the reference value data and the level data detected from the output signal of the output control unit becomes within a predetermined range; anda smoothing unit for smoothing the difference between the initial value data and the average value data both provided through the switching unit, for a predetermined period and generating the control signal for the output control unit accordingly.