Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By frequency
Patent
1997-03-14
2000-09-05
Lam, Tuan T.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By frequency
327 43, 327 47, 327 49, H03K 706
Patent
active
061148806
ABSTRACT:
An over frequency detection circuit which is based on the concept of a critical path in a design to protect an IC chip from running at a rate which will produce unpredictable results. The over frequency detection circuit will compare the output of a critical path generation circuit with that of a known path generation circuit. The known path generation circuit must have a delay which is guaranteed to be much shorter than the delay of the critical path generation circuit. If the output of the critical path generation circuit is not the same as the output of the known path generation circuit, then the critical path generation circuit has begun to fail and the IC chip should be disabled.
REFERENCES:
patent: 3959731 (1976-05-01), Pomerantz et al.
patent: 3971994 (1996-07-01), Shepard
patent: 4362957 (1982-12-01), Stem
patent: 4564837 (1986-01-01), Awano
patent: 4691382 (1987-09-01), Nakajima
patent: 4988901 (1991-01-01), Kamuro et al.
patent: 5572719 (1996-11-01), Smith
patent: 5708375 (1998-01-01), Lemmens
patent: 5834959 (1998-11-01), Ritter et al.
Buer Mark Leonard
Yup Bing
Lam Tuan T.
Philips Semiconductor VLSI, Inc.
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