Patent ID: 6636209
Filing Date: 2003-10-21
Classification: G09G,H04N

Abstract:
An apparatus for controlling a variable current comprising:a field delayer having a controlled variable as an input and the controlled variable, being delayed by one field period, as an output; a multiplier having an average value of a signal and the controlled variable, which is delayed by one field period, as inputs and a predicted value as an output; a deviation detector having the predicted value and a target value as inputs and a deviation signal as an output; a proportionality term calculator having the deviation signal and a response characteristic parameter as inputs and proportionality-term data as an output; an adder having the proportionality-term data and the delayed controlled variable as inputs and a modified controlled variable as an output; and a limiter having the modified controlled variable as input and a further modified controlled variable as an output controlled variable, wherein the output controlled variable is input to said field delayer as an input controlled variable.