Static information storage and retrieval – Floating gate – Data security
Reexamination Certificate
2006-11-28
2006-11-28
Auduong, Gene N. (Department: 2827)
Static information storage and retrieval
Floating gate
Data security
C365S195000
Reexamination Certificate
active
07142452
ABSTRACT:
A method and system for storing secure data in a multi-time programmable, non-volatile electrically-alterable memory device are disclosed. Accordingly, in an embodiment, a memory device may include a data register with a fixed N-bit pattern, comparator logic, control logic, and an array of non-volatile electrically-alterable memory cells. Each memory cell includes a floating gate to store an electronic charge representing the logical state of the memory cell. The plurality of memory cells may be logically partitioned to include an N-bit secure lock and a plurality of memory cells for storing secure data. The random bit values stored in the N-bit secure lock are read, and compared with the fixed N-bit pattern stored in the data register. If the N-bit patterns do not match, the control logic allows the plurality of memory cells for storing secure data to be programmed with secure data.
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Auduong Gene N.
Blakely , Sokoloff, Taylor & Zafman LLP
Virage Logic Corporation
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