Input/output optical fiber serial interface link that selectivel

Details Input/output optical fiber serial interface link that selectivel Input/output optical fiber serial interface link that selectivel

1998-06-01

2000-11-07

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral configuration

710 11, 710 30, 710 38, 710 51, 385 24, G06F 1300

Patent

active

061450243

ABSTRACT:
An input/output data transfer system capable of integrating input/output data transfer on a plurality of input/output interface cables into data transfer on a single serial input/output interface cable for substantially reducing the number of input/output interface cables required for a host computer system. A multiplexer channel device is provided with a plurality of channels which serve as logical channels corresponding to conventional physical channel paths from a viewpoint of an operating system running on the host computer system. A multiplexer port device is provided with a plurality of input/output ports on a switching device or input/output device, each of these channels and ports shares a large-capacity input/output interface, and a channel path multiplexing function is performed for enabling frame-by-frame multiplexing and simultaneous input/output operations on plural channels. For each of logical channel paths multiplexed on the large-capacity link, a logical connection is established to provide compatibility with conventional input/output operations, and a data transfer capacity bandwidth of the large-capacity link is always allocated optimally to one or more active channels.

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