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Title:
SUB-SYSTEM FOR INPUT AND OUTPUT COMMUNICATION AND METHOD THEREFOR
Document Type and Number:
Japanese Patent JP3172387
Kind Code:
B2
Abstract:

PURPOSE: To provide a multipath channel interface forming a transmissible interface between a user application using a conventional input and output channel and a conventional channel path input and output supervisor process.
CONSTITUTION: A multipath channel interface 12 of a computer input and output system includes a capability of defining and activating the unbalanced group of a unidirectional communication sub-channel corresponding to a user application 10. A protocol independent identification exchange not only permits the unbalanced transmission group, but also enables user control extension for negotiating a transmission parameter value when the transmission group is activated. When error correction retransmission forces the resegmentation of a data block, the correct sequence of the transfer of various segments and sub-segments is ensured by sub-segment indexing in a second level. The identification exchange includes the identification of a supported user protocol, and enables interface with an arbitrary user protocol.


Inventors:
Long, Lynn D.
Menditto, Louis F.
Masashi, Edward Miyake
Stagg, Arthur J.
Ward, Raymond E.
Application Number:
JP1995000060516
Publication Date:
June 04, 2001
Filing Date:
March 20, 1995
Export Citation:
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Assignee:
INTERNATL BUSINESS MACH CORP <IBM>
International Classes:
G06F11/00; G06F11/14; G06F13/00; G06F13/12; G06F13/14; H04L29/06; (IPC1-7): G06F13/00
Attorney, Agent or Firm:
坂口 博 (外1名)



 
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