Electronic digital logic circuitry – Interface – Supply voltage level shifting
Reexamination Certificate
2008-04-08
2008-04-08
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Interface
Supply voltage level shifting
C326S083000, C326S068000, C327S333000
Reexamination Certificate
active
07355446
ABSTRACT:
A voltage conversion circuit changes an input signal of a first voltage into an output signal of a second voltage. The circuit includes an input terminal receiving an input signal, an output terminal generating an output signal, and first and second level-shifting units connected in parallel between the input and output terminals. The first and second level-shifting units have different transition delay characteristics, enabling rising and falling transition delays to be variable in the same ratio when the first and second voltages are changed.
REFERENCES:
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patent: 7091748 (2006-08-01), Wada
patent: 2004/0085114 (2004-05-01), Hong et al.
patent: 2005/0285658 (2005-12-01), Schulmeyer et al.
patent: 2002-344301 (2002-11-01), None
patent: 2004-153689 (2004-05-01), None
patent: 1020040039581 (2004-05-01), None
Barnie Rexford
F. Chau & Assoc. LLC
Hammond Crystal L.
Samsung Electronics Co,. Ltd.
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