Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Having specific delay in producing output waveform
Reexamination Certificate
2006-12-26
2006-12-26
Tra, Quan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Having specific delay in producing output waveform
C327S277000
Reexamination Certificate
active
07154322
ABSTRACT:
A delay signal generator circuit is provided. A delay circuit including a plurality of series-connected inverters for sequentially delaying a first clock signal and for generating a plurality of delay signals and a multiplexer for selecting one of the delay signals. A delay control circuit samples the selected delay signal in response to a transition of a second clock signal. The second clock signal has twice the frequency of the first clock signal, and the delay control circuit controls the delay circuit based upon the sampled value(s) so that the selected delay signal output from the delay circuit has a delay time of ¼ clock cycle relative to the first clock signal.
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Aranda Rey
F. Chau & Associates LLC
Tra Quan
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