Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2007-08-07
2007-08-07
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S152000, C327S158000
Reexamination Certificate
active
11288176
ABSTRACT:
A phase synchronization circuit comprises: a measurement delay line which includes a plurality of delay elements having different delay times and to which a first clock signal is inputted; a phase comparator line which includes a plurality of phase comparators in accordance with the measurement delay line and to which a signal from the measurement delay line and a second clock signal are inputted so as to measure a transition timing difference between the first clock signal and the second clock signal; and a generation delay line which includes a plurality of delay elements having different delay times in accordance with the measurement delay line and to which a signal from the phase comparator line and a third clock signal are inputted. The delay time of the respective delay elements is fixed.
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“A 2.5-ns Clock Access, 250-MHZ, 256-Mb SDRAM with Synchronous Mirror Delay” by IEEE Journal of Solid State Circuits, vol. 31, No. 11, Nov. 1996.
Luu An T.
Mattingly, Stanger, Malur & Brundidge, P.C
Renesas Technology Corp.
Wells Kenneth B.
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