公开(公告)号：US5268688A

公开(公告)日：1993-12-07

申请号：US882212

申请日：1992-05-13

申请人： Clifford W. Meyers ,  Sandy A. Morales ,  Gene Rzyski ,  Mark M. Osugi

发明人： Clifford W. Meyers ,  Sandy A. Morales ,  Gene Rzyski ,  Mark M. Osugi

IPC分类号： G11B20/10 ,  H03H17/00 ,  H03M1/08 ,  H03M1/66 ,  H03M3/04 ,  H03M7/36

CPC分类号： H03M1/661

摘要： Linear signal reconstruction systems and methods that use mathematical relationships that exist between discrete time signals, digital to analog conversion characteristics and digital signal processing to produce a highly accurate, low noise, arbitrary analog signal from a discrete digital representation. This analog signal is produced by connecting discrete digital voltages through the use of a segmented straight line curve fit. This approach significantly reduces out of band harmonics that are normally associated with the stair-step approach while improving the output signal amplitude and phase accuracy. More specifically, the present system and method provides for reconstructing original analog signals from a digitized representation thereof. Digitized signals corresponding to the original analog signals are differentiated and then D to A converted into differentiated analog signals. The differentiated analog signals are then integrated to provide for reconstructed analog signals that correspond to the original analog signals.