PULSE AREA MODULATION METHOD AND PULSE AREA MODULATOR USING THEREOF

摘要

Provided is a pulse area modulation apparatus including: a register configured to receive and store PCM data having n+m bits per a sample; an amplitude shaping unit configured to shape an amplitude of an output pulse to correspond to the n bits; a duration forming unit configured to form duration of the output pulse to correspond to the m bits; and a charge accumulation means providing an output pulse, wherein a pulse area of the output pulse defined by the amplitude and the duration is modulated according to the sample.

主权项

1. A pulse area modulation apparatus comprising:
a register configured to receive and store PCM data having n+m bits per a sample; a charge accumulation means; an amplitude shaping unit configured to shape an amplitude of an output pulse corresponding to the n bits by accumulating charges in the charge accumulation means; and a duration forming unit configured to form and output duration of the output pulse to correspond to the m bits, wherein a pulse area of the output pulse defined by the amplitude and the duration is modulated according to the sample (n and m are natural numbers).