SINUSOIDAL WAVE SIGNAL GENERATING CIRCUIT

摘要

The present invention provides a sinusoidal wave signal generating circuit which makes it possible to reduce the circuit scale. Only the sinusoidal wave amplitude data are stored by relying upon the symmetry of the sinusoidal wave form for outputting sinusoidal wave amplitude data corresponding to input phase data. When the phase data other than the stored phase in the quarter other than the stored phase in the quarter of one period is input, the input data is converted to a relevant phase data in a quarter of one period so that the sinusoidal wave amplitude data in one period can be output.