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US 4,398,248 AGranted
Adaptive WSI/MNOS solid state memory system
AssigneeMcDonnell Douglas Corporation
InventorsYukun Hsia, Richard W. Rodgers
Life of this patent
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Abstract
The disclosed solid state mass memory system comprises an adaptive, wafer scale integration, nonvolatile mass memory system organized as a stack of individual memory wafer modules with a memory system control means.
Claims13
A nonvolatile solid state mass memory system comprising:
- a plurality of adaptive, wafer scale integration memory wafers wherein an individual memory wafer comprises a plurality of rows with each row containing a first plurality of memory arrays each having a plurality of locations for nonvolatile storage of information and a second plurality of array controllers wherein the memory arrays in the row are operably connected to and uniquely accessed by the array controllers in the row by a first bi-directional bus means and the array controllers are operably connected to a second bi-directional bus means such that only one array controller is operable at one time within a row with the remainder of the functional array controllers serving as inactivated functional redundant spares;
- and
- a memory system control means comprising means to identify and access an individual memory wafer, means to identify and access individual array controllers via the second bi-directional bus, and interface means to operably connect the nonvolatile solid state mass memory system to an external information processing system.
Dependencies are inferred from the claim text.