公开(公告)号：US3564145A

公开(公告)日：1971-02-16

申请号：US3564145D

申请日：1969-04-30

Applicant: IBM

Inventor： DEUTSCH HERMAN ,  KNEPPER DELBERT M SR ,  GIESON WALTER D VAN JR ,  WARNER ARTHUR

IPC: H04L25/02 ,  G06F11/30 ,  H04J3/14 ,  H04L12/437

CPC classification number: H04J3/14 ,  H04L12/437

Abstract: Terminals in a serial loop data transmission system automatically monitor input data to detect no data and mutilated data conditions. When either condition is detected, signals including the unique terminal address are automatically generated. The generated signals satisfy all down stream terminals and the central controller within a predetermined time is provided with the address of the terminal immediately following the fault and an indication of the type of fault.