公开(公告)号：US3562711A

公开(公告)日：1971-02-09

申请号：US3562711D

申请日：1968-07-16

Applicant: IBM

Inventor： DAVIS ROBERT H ,  BOUDREAU PAUL E ,  HARRIS JERRY S

IPC: H04L1/00 ,  G08C25/00 ,  H04L1/10

CPC classification number: H04L1/0057

Abstract: A DEVICE FOR DETECTING CIRCUIT MALFUNCTIONS IN CERTAIN LINEAR SWITCHING CIRCUITS OPERATED IN SUCCESSIVE TIME PERIODS WHICH HAS A FIRST CIRCUIT FOR GENERATING A PREDICTED PARITY SIGNAL FOR EACH SUCCESSIVE TIME PERIOD, A PARITY CHECK CIRCUIT FOR GENERATING A SIGNAL INDICATIVE OF ACTUAL PARITY DURING EACH SUCCESSIVE TIME PERIOD, AND A COMPARATOR FOR COMPARING THE SIGNALS REPRESENTING THE PREDICTED PARITY AND THE ACTUAL PARITY DURING EACH SUCCESSIVE TIME PERIOD, THEREBY TO INDICATE ANY CIRCUIT MALFUNCTION DURING EACH SUCH SUCCESSIVE TIME PERIOD.