公开(公告)号：DE1437699A1

公开(公告)日：1968-10-24

申请号：DE1437699

申请日：1965-04-07

Applicant: IBM

Inventor： ABRAMSON PAUL ,  WILLIAM BENETT RICHARD ,  HEIGHTS YORKTOWN ,  RAYMOND STILWELL JUN GEORGE

IPC: G08C15/06 ,  H01H36/00 ,  H01H51/28 ,  H01H67/06 ,  H03K3/45

Abstract: 1,073,054. Selective signalling. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 22, 1965 [April 20, 1964], No. 12006/65. Heading G4H. At a central station, a magnet (12), Fig. 1 (not shown) is rotated 4 times as fast as a magnet (32), so that while one of reed switches (41, 43, 45, 47) is closed by magnet (32), pulses are induced in coils (21-23) by magnet (12), and while one of reed switches (42, 44, 46, 48) is closed, pulses are induced in coils (24-26). The pulses from coils (21-23) scan three switches (101-103) at each of four remote stations (A-D), but since only one switch (41, 43, 45, 47) is closed at a time the signals from one station (A-D) at a time are passed to output (72). The pulses from coils (24-26) provide binary coded indications of the respectiveremote station identities by way of diodes (122- 128) and switches. (42, 44, 46, 48), only one of which can be closed at a time, the identity pulse train following the data from the respective remote station. In Fig. 2 (not shown) pulses from coils (21-26) scan six switches at each station (A-D), two adjacent reed switches such as (41, 42) passing the first and last three signals from the associated remote station to respective gates (134, 136) which are enabled by the combined pulses from coils (21-23) and (24-26) respectively.