Hardware for verifying that software has not skipped a predeterm

Details Hardware for verifying that software has not skipped a predeterm Hardware for verifying that software has not skipped a predeterm

1996-03-05

1998-05-26

Swann, Tod R.

Boots, shoes, and leggings

39518501, 39518401, 39518301, 364DIG1, G06F 1100

Patent

active

057580600

ABSTRACT:
A hardware circuit for verifying the execution of software is disclosed wherein the circuit compares a stored value with another value that is stored at at least one predetermined time in the course of program execution. If the two values correspond in some predetermined fashion then it is verified with a level of certainty that the program executed the program steps at or near the predetermined times.

REFERENCES:
patent: 4338660 (1982-07-01), Kelly et al.
patent: 4747048 (1988-05-01), Mueller
patent: 5157782 (1992-10-01), Tuttle et al.
patent: 5218605 (1993-06-01), Low et al.
patent: 5327564 (1994-07-01), Little
patent: 5521849 (1996-05-01), Adelson et al.
patent: 5561770 (1996-10-01), de Bruijn et al.

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