Active solid-state devices (e.g. – transistors – solid-state diode – Gate arrays – With particular signal path connections
Patent
1995-12-29
1999-05-25
Crane, Sara
Active solid-state devices (e.g., transistors, solid-state diode
Gate arrays
With particular signal path connections
257209, 257211, 257390, H01L 2710
Patent
active
059071672
ABSTRACT:
A ROM circuit that can be modified via the alteration of any one of a set of substance layers is described. The ROM circuit includes a set of ROM cells each of which provide one bit of data used to construct the fixed binary number. Each ROM cell includes a set of circuits that can be placed in either a first or second state via modification of a single substance layer that is different for each circuit, and generates a signal in a logic state that depends on whether the number of circuits in the first state is odd or even. When a design revision occurs the state of one of the circuits from the set of circuits is modified to update the fixed binary number using one of the substance layer already being modified during the course of the design revision.
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patent: 5028821 (1991-07-01), Kaplinsky
patent: 5132571 (1992-07-01), McCollum et al
patent: 5214299 (1993-05-01), Gal et al.
patent: 5378904 (1995-01-01), Suzuki et al.
patent: 5581097 (1996-12-01), Narishi
Crane Sara
Edmonston Brian S.
Miller Russell B.
Ogrod Gregory D.
Qualcomm Incorporated
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