Automated control system for programming PLDs

Details Automated control system for programming PLDs Automated control system for programming PLDs

1996-08-05

1998-07-21

Sheikh, Ayaz R.

39549701, 395490, G06F 1214, G06F 1310

Patent

active

057845778

ABSTRACT:
In an automated control system, a user must be authorized to modify the configuration data of a programmable logic device (PLD). After authorization is confirmed, the PLD is unlocked. Then, the configuration data of the PLD and the contents of a version control register are read back and archived, thereby providing a security back-up should the user need to retrieve the original data. After readback, the version control number is automatically incremented. This incremented version control number and the modified configuration data provided by the user are downloaded to the PLD. Finally, the PLD is locked.

REFERENCES:
patent: 4852044 (1989-07-01), Turner et al.
patent: 5249285 (1993-09-01), Mueller et al.
patent: 5287519 (1994-02-01), Dayan et al.
patent: 5497498 (1996-03-01), Taylor
patent: 5535342 (1996-07-01), Taylor
patent: 5581120 (1996-12-01), Gudger
patent: 5603043 (1997-02-01), Taylor et al.

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