Patent ID: 6034787
Filing Date: 2000-03-07
Classification: H04N

Abstract:
An image processing apparatus comprising:an input means for inputting a digital input signal representing a gradation;a first pulse signal generation means for generating a first pulse signal for each recording dot; anda pulse width modulation (PWM) signal generating means for generating a PWM signal, each pulse of the PWM signal corresponding to one recording dot,wherein said PWM signal generating means comprises:a first programmable delay circuit for delaying the first pulse signal by a variable amount according to a value of the digital input signal and for generating a signal for determining a timing of a leading edge of the pulse of the PWM signal for each recording dot; anda second delay circuit for delaying the signal generated by said first delay circuit in accordance with the digital input signal and for generating a signal for determining a timing of a trailing edge of the pulse of the PWM signal for each recording dot.