Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2006-01-17
2006-01-17
Callahan, Timothy P. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S149000, C327S161000
Reexamination Certificate
active
06987409
ABSTRACT:
An analog DLL device includes a delay model for modeling delay time for buffering the external clock signal; a phase comparator for comparing a phase of the reference clock signal with an phase of an outputted signal from the delay model; a charge pump for pumping charges; a loop filter for generating a reference voltage; a voltage control delay line and a tracking digital-analog converter which converts the reference voltage to a digital value; and stores the digital value for keeping the reference voltage safely.
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Hong Sang-Hoon
Kim Se-Jun
Ko Jae-Bum
Blakely & Sokoloff, Taylor & Zafman
Callahan Timothy P.
Hynix / Semiconductor Inc.
Nguyen Hai L.
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