Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2006-07-28
2009-11-17
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S054000, C365S189090, C365S228000
Reexamination Certificate
active
07619464
ABSTRACT:
An electronic data storage system uses current comparison to generate a voltage bias. In at least one embodiment, a voltage bias generator, that includes a current differential amplifier, generates a current that charges a load to a predetermined voltage bias level. The current comparison results in the comparison between two currents, Irefand Isaref. The current Isarefcan be generated using components that match components in the load and memory circuits in the system. In one embodiment, multiple sense amplifiers represent the load. By using matched components, as physical characteristics of the load and memory circuits change, the current Isarefalso changes. Thus, the voltage bias changes to match the changing characteristics of the load and memory circuits. The voltage bias generator can include a current booster that decreases the initial charging time of a reactive load.
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Choy Jon S.
Wang Yanzhuo
Chambers Kent B.
Donovan Lincoln
Englund Terry L
Freescale Semiconductor Inc.
Hamilton & Terrile LLP
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