Patent ID: 6538523
Filing Date: 2003-03-25
Classification: G06F,H03K,H04N

Abstract:
A multi-channel pulse width modulation apparatus comprising:a plurality of pulse width modulation signal generators which respectively generate a pulse width modulation signal, and when a timing signal showing a shifted amount of a generation timing of the pulse width modulation signal is inputted thereto, generate a pulse width modulation signal in which the generation timing thereof is shifted corresponding to the timing signal; and a determination section that determines whether or not the pulse width modulation signals from the plurality of pulse width modulation signal generators exceed a predetermined number and become effective at substantially the same time, and on the basis of the results of the determination, generates the timing signal so that the number of pulse width modulation signals that become effective at substantially the same time becomes no greater than the predetermined number, and outputs the timing signal to a corresponding pulse width modulation signal generation section.