Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2007-06-29
2009-10-20
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S161000
Reexamination Certificate
active
07605623
ABSTRACT:
A semiconductor memory apparatus includes a delay line configured to delay a reference clock, a first delay block configured to delay a feedback clock, a first phase comparator configured to compare the reference clock with an output of the first delay block, a second delay block configured to delay the reference clock, a second phase comparator configured to compare the feedback clock with an output of the second delay block, a delay controller configured to control a delay amount of the delay line based on comparison results from the first and second phase comparators, a delay model configured to delay an output of the delay line by a modeled delay time to generate the feedback clock, and a locking detector configured to control the delay controller based on comparison results from the first and second phase comparators.
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Lee Hyun-Woo
Yun Won-Joo
Blakely , Sokoloff, Taylor & Zafman LLP
Donovan Lincoln
Hynix / Semiconductor Inc.
Poos John W
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