Address verification system using parity for transmitting and re

Details Address verification system using parity for transmitting and re Address verification system using parity for transmitting and re

1994-04-26

1995-09-26

Beausoliel, Jr., Robert W.

Excavating

G06F 1110

Patent

active

054539994

ABSTRACT:
An address verification system for providing address error detection whether the error originates at the address generation circuitry, the address transmission path, or the address receiving circuitry. Multiple address generation circuits which simultaneously generate equivalent addresses each have associated parity generation circuits to provide parity bits for its associated address. Monitoring for unequal parity bits generated by the multiple parity generation circuits allows detection of address generation errors. Predetermined address parity bits for each potential address to be sent to the address-receiving circuitry are stored at the address-receiving circuitry to be compared to the parity bits issued by the multiple parity generation circuits. The predetermined address parity bits are determined prior to real-time address transmissions of the system, so that manual or automatic verification of the predetermined parity bits can be performed to ensure correctness of the predetermined address parity bits. The use of predetermined address parity bits which are stored at the address-receiving circuitry allows detection of address transmission and address receipt errors. Monitoring circuitry monitors for parity errors so that appropriate action may be taken upon recognition of such parity errors.

REFERENCES:
patent: 4005405 (1977-01-01), West
patent: 4531213 (1985-07-01), Scheuneman
patent: 4596014 (1986-06-01), Holeman
patent: 4692893 (1987-09-01), Casper
patent: 5226043 (1993-07-01), Pughe, Jr. et al.
patent: 5321706 (1994-06-01), Holm et al.
patent: 5345582 (1994-09-01), Tsuchiya
patent: 5392302 (1993-12-01), Kemp et al.

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