公开(公告)号：FR2400804A1

公开(公告)日：1979-03-16

申请号：FR7821332

申请日：1978-07-12

Applicant: IBM

Inventor： CASES MOISES ,  CHANG FUNG Y ,  RUBIN BARRY J

IPC: G06G7/16 ,  G11C27/04 ,  H01L21/339 ,  H01L29/76 ,  H01L29/762 ,  H03H15/02 ,  H03K

Abstract: A charge coupled device analog multiplier is used to weigh the sampled and delayed signals for a transversal filter. The digital filter coefficients for the analog multiplier can be electrically programmed and therefore dynamic time-varying systems, such as matched filters, can be designed with reduced circuit complexity. The digital filter includes means for sampling without destroying an analog signal at various points and providing voltages proportional to each sampled signal. The voltages are separately applied to a charge coupled device analog multiplier which accepts the voltages and provides means for multiplying the digital filter coefficient by the analog voltage. The multiplied sample signal is then dumped into a means for summing all of the weighted sample signals to produce an analog signal modified by the digital filter coefficients.

公开(公告)号：FR2373126A1

公开(公告)日：1978-06-30

申请号：FR7731856

申请日：1977-10-14

Applicant: IBM

Inventor： ANANTHA NARASIPUR G ,  CHANG FUNG Y ,  RUBIN BARRY J

IPC: G11C27/04 ,  G11C11/56 ,  G11C19/28 ,  G11C19/36 ,  H03H11/26