Data processing virus protection circuitry including a permanent

Details Data processing virus protection circuitry including a permanent Data processing virus protection circuitry including a permanent

1991-04-29

1994-11-22

Gossage, Glenn

Boots, shoes, and leggings

395425, 364DIG1, 371 102, G06F 9445, G06F 1116, G06F 1216

Patent

active

053676823

ABSTRACT:
A virus protection system, which may be coupled to an external input/output port of a disk operated data processing system, includes a read only memory in which a redundant partition table is stored, duplicating a partition table on the disk. The virus detection system further includes detection logic which monitors a transfer of data from the disk to a system random access memory and which detects data transfers to a high region of the system memory during initial portions of the transfer. When a virus is detected, the redundant partition table is written onto the disk.

REFERENCES:
patent: 4975950 (1990-12-01), Lentz
patent: 5086502 (1992-02-01), Malcolm
patent: 5121345 (1992-06-01), Lentz
patent: 5136711 (1992-08-01), Hugard et al.
patent: 5144659 (1992-09-01), Jones

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