Semiconductor device having delay locked loop and method for...

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing

Reexamination Certificate

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C327S161000

Reexamination Certificate

active

07602224

ABSTRACT:
A delay locked loop includes: a control voltage generator configured to generate a voltage control signal having a voltage level corresponding to a phase difference between an external clock and a feedback clock; a voltage controlled delay line configured to generate a plurality of output signals by reflecting a different delay time on the external clock in response to the voltage control signal; an internal clock multiplexer configured to output one of the plurality of output signals as an internal clock in response to a skew information signal; a delay replica model configured to output the feedback clock by reflecting a delay of an actual clock/data path on the internal clock; and a skew information signal generator configured to generate the skew information signal.

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Korean Office Action, with English translation, issued in Korean Patent Application No. KR 10-2007-0047500, mailed May 28, 2008.
Khan, Q., et al., “Techniques for On-Chip Process Voltage and Temperature Detection and Compensation”, Proceedings of the 19th International Conference on VLSI Design (VLSID '06), 2006, IEEE Computer Society.
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