公开(公告)号：US06320431B1

公开(公告)日：2001-11-20

申请号：US09430849

申请日：1999-11-01

Applicant: David Potson ,  Mark F. Rives

Inventor： David Potson ,  Mark F. Rives

IPC: H03B2100

CPC classification number: G06F1/0353 ,  G06F1/0328 ,  G06F1/0342 ,  G06F2211/902

Abstract: An apparatus according to a preferred embodiment of the present invention includes two memories each storing different octants of a sine (or cosine) waveform. The sine and cosine waveforms may be concurrently generated by alternately accessing each memory in succession. It is unnecessary to access one memory concurrently, so that both waveforms may be concurrently generated without requiring either two accesses to the same memory or a doubled memory size.

Abstract translation: 根据本发明的优选实施例的装置包括两个存储器，每个存储器具有正弦（或余弦）波形的不同八分圆。 可以通过相继地交替地访问每个存储器来同时产生正弦和余弦波形。 不需要同时访问一个存储器，从而可以同时产生两个波形，而不需要对相同存储器的两次访问或双倍的存储器大小。