公开(公告)号：JPH0630519B2

公开(公告)日：1994-04-20

申请号：JP24038184

申请日：1984-11-14

Applicant: TANDEM COMPUTERS INC

Inventor： UIRIAMU AARU GUTSUDOMAN

IPC: G06F17/40 ,  G06F11/00 ,  G06F11/07 ,  G06F13/12 ,  G06F13/22 ,  G06F13/42 ,  H04L12/52 ,  H04L12/44

公开(公告)号：JPH053941B2

公开(公告)日：1993-01-18

申请号：JP24038484

申请日：1984-11-14

Applicant: TANDEM COMPUTERS INC

Inventor： UIRIAMU AARU GUTSUDOMAN ,  RICHAADO BII MEIFUIIRUDO ,  TETSUDO TAUSHUNSUKII ,  FUREDORITSUKU ERU ZARUDEIATSUKASU

IPC: G06F11/00 ,  G06F13/00 ,  G06F13/42 ,  H04L1/16 ,  H04L1/18 ,  H04L29/08

Abstract: The present disclosure relates to a communications method for communicating data over a data channel that comprises two unidirectional communication lines. A protocol which is a set of predetermined control characters is used by the communications method and the protocol is used for transferring data between communicating devices. The communications method combines acknowledgments which are control characters of the protocol transmitted in between messages, piggy-backing which is the combining of control characters of the protocol and data messages, and hold-offs with long time outs which cause the devices to enter a standby idle mode waiting for a responsive control character of the protocol. The communications system and method combines these features so as to permit improved efficient flow control of data information between the communicating devices.