The digital to analog circuit, being digital to analog manner and

摘要

PROBLEM TO BE SOLVED: To provide a digital-analog converter circuit which reduces the time required for conversion.;SOLUTION: The converter circuit comprises first switch circuits SW11-SW16 turning on and off according to a digital signal, second switch circuits SW2-1, SW2-2 connected to the first switch circuits, a first to third capacitor elements C1-C4 and a third to seventh switch circuits SW3-SW7. The second capacitor element C3 previously stores charges according to the values of digital pixel data, and the switch circuit SW6 turns on to transfer the charges to the third capacitor element C4 when the charging ends. Hence, the capacitor element C4 can continue holding the charges according to previous image data while the switch circuit SW6 is off.;COPYRIGHT: (C)2003,JPO