Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Fusible link or intentional destruct circuit
Reexamination Certificate
2008-07-22
2008-07-22
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Fusible link or intentional destruct circuit
C327S526000, C365S225700
Reexamination Certificate
active
11277315
ABSTRACT:
Disclosed are embodiments of an apparatus incorporating a detection circuit adapted for determining the state of selected fuses and a programming circuit for blowing selected fuses on demand. Also, disclosed are embodiments of an associated method. The detection circuit comprises a plurality of fuses in identical signal and reference legs in order to increase the signal margin for detecting blown fuses and/or current sources configured to pass offset currents through the signal and reference legs in order to set the trip point for detecting blown fuses between the un-blown and the minimum blown resistances. Thus, the invention provides the flexibility of single-sided fuse state detection devices with even greater sensitivity than both single-sided and differential fuse state detection device.
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Barwin John E.
Lamphier Steven H.
Pilo Harold
Gibb & Rahman, LLC
International Business Machines - Corporation
LeStrange, Esq. Michael
Wells Kenneth B.
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