Device having spare I/O and method of using a device having...

Details Device having spare I/O and method of using a device having... Device having spare I/O and method of using a device having...

2006-10-17

2006-10-17

Huynh, Kim (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

C710S038000

Reexamination Certificate

active

07124213

ABSTRACT:
A method and apparatus for correcting internally defective devices by routing signals on an I/O line to a spare internal network. Such devices enable a system designer to substitute good internal networks, e.g., memory arrays, for failing internal networks without loss of functionality at the I/O level. A device includes a plurality of I/O lines, a plurality of internal networks, a plurality of multiplexers for routing signals from the individual I/O lines to the individual internal networks, and a multiplex controller for controlling the signal routing. Routing can be performed using multiplexers that operatively interconnect any I/O line with any internal network, multiplexers that shift signals on an I/O line to and adjacent internal network, and/or multiplexers that can shift signals on an I/O through a multiplexer to any other multiplexer, and then to any internal network.

REFERENCES:
patent: 5680641 (1997-10-01), Sidman
patent: 5909594 (1999-06-01), Ross et al.
Mano and Kime, Logic and Computer Design Fundamentals, 2000, Prentice-Hall, 2nd edition, pp. 119-122.

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