公开(公告)号：DE3275694D1

公开(公告)日：1987-04-16

申请号：DE3275694

申请日：1982-12-28

Applicant: IBM ,  IBM FRANCE

Inventor： PICARD JEAN-LOUIS

IPC: H04L25/38 ,  H04L7/00 ,  H04L23/02 ,  H04L25/48 ,  H04L25/49 ,  H04L29/00 ,  G08C19/28

Abstract: A data transmission system wherein data are entered upon activation of input points of an entry unit (1) of the keyboard type, including a sequence generation unit (5) generating a series of "maximum length" sequences on to a series-output (8) and a different binary pattern for each bit in the sequence on to a parallel-output (6). Such a binary pattern is compared in a coincidence circuit (7) with the binary representation of an activated point of the entry unit (1) so as to produce a bit "one" on line (9) which alters, through an X OR circuit (10), the corresponding bit in the sequence to be transmitted over the transmission line (11).

公开(公告)号：DE1244861B

公开(公告)日：1967-07-20

申请号：DEC0026929

申请日：1962-05-07

Applicant: IBM FRANCE

Inventor： PICARD JEAN-LOUIS

IPC: G01S7/28 ,  G06F5/06 ,  G06F7/50 ,  G06F7/505 ,  G06F13/00 ,  G06F17/40 ,  H03M1/00