Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2011-06-28
2011-06-28
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S149000
Reexamination Certificate
active
07969214
ABSTRACT:
A delay locked loop (DLL) circuit includes a phase detection unit configured to generate a phase detection signal by comparing a phase of a reference clock signal with a phase of a feedback clock signal. An update control apparatus is configured to generate a valid interval signal and an update control signal by determining a difference between the number of first logical values and the number of second logical values of the phase detection signal in response to the reference clock signal. A shift register configured to update a delay value granted to a delay line in response to the update control signal when the valid interval signal is enabled.
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Choi Hae Rang
Han Sung Woo
Hwang Tae Jin
Jang Jae Min
Kim Hyung Soo
Donovan Lincoln
Houston Adam D
Hynix / Semiconductor Inc.
Ladas & Parry LLP
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