Computer expansion unit with circuitry for reliable communicatio

Details Computer expansion unit with circuitry for reliable communicatio Computer expansion unit with circuitry for reliable communicatio

1997-07-29

1999-11-23

Ray, Gopal C.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

714 48, 714750, 370249, G06F 1338, G06F 1108, H04L 1226

Patent

active

059918403

ABSTRACT:
When a first expansion unit in a computer sends data on an auxiliary bus directly to a second expansion unit, the second expansion unit sends the same data directly back to the first expansion unit. If the data sent back are not identical to the data originally sent, the first expansion unit generates an error signal. Alternatively, when a first expansion unit in a computer sends data on an auxiliary bus directly to a second expansion unit, the first expansion unit sends identical data in at least two data streams on the auxiliary bus. If the second expansion unit does not receive identical data from all of these data streams, the second expansion unit generates an error signal.

REFERENCES:
patent: 4569049 (1986-02-01), McNamara
patent: 4965793 (1990-10-01), Polzin et al.
patent: 5414713 (1995-05-01), Waschura et al.
patent: 5754531 (1998-05-01), Okamoto
patent: 5790523 (1998-08-01), Ritchie, Jr. et al.
patent: 5838915 (1998-11-01), Klausmeier et al.

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