Static information storage and retrieval – Systems using particular element – Amorphous
Reexamination Certificate
2008-12-01
2011-11-15
Dinh, Son (Department: 2824)
Static information storage and retrieval
Systems using particular element
Amorphous
C365S189160, C365S210130
Reexamination Certificate
active
08059454
ABSTRACT:
An adjustable write pulse generator is disclosed. The adjustable write pulse generator includes a band-gap reference current, a programmable ring oscillator, a frequency divider and a single pulse generator. The band-gap reference current circuit generates a well-compensated current over a predetermined range of temperatures needed to program a chalcogenide memory cell. The programmable ring oscillator generates a first set of continuous write “0” and write “1” pulse signals based on the well-compensated current. The frequency divider then divides the first set of continuous write “0” and write “1” pulse signals into a second set of continuous write “0” and write “1” pulse signals. The single pulse generator subsequently converts the second set of continuous write “0” and write “1” pulse signals into a single write “0” pulse signal or a single write “1” pulse signal when programming the chalcogenide memory cell.
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Bumgarner Adam Matthew
Li Bin
Michael George
Pirkl Daniel
BAE Systems Information and Electronic Systems Integration Inc.
Dinh Son
Ng Antony
Ovonyx Inc.
Yudell Isidore Ng Russell PLLC
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