Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Having specific delay in producing output waveform
Reexamination Certificate
2007-10-09
2007-10-09
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Having specific delay in producing output waveform
C327S281000
Reexamination Certificate
active
11215416
ABSTRACT:
Delay elements and delay lines having glitchless operation are disclosed. By way of example, apparatus for delaying an input signal comprises a reference current generator for generating a constant current, wherein the constant current is insensitive to a variation of a power supply voltage, at least one variable bias voltage generator coupled to the reference current generator for generating a set of bias voltages based on the constant current generated by the reference current generator and a digitally programmable delay control input, and at least one delay element coupled to the at least one variable bias voltage generator for delaying the input signal by a constant delay which is determined by the set of bias voltages generated by the at least one variable bias voltage generator.
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Dreps Daniel M.
Ferraiolo Frank D.
Friedman Daniel J.
Kim Seongwon
Saenz Hector
Dougherty Anne V.
International Business Machines - Corporation
Jager Ryan C.
Ryan & Mason & Lewis, LLP
Wells Kenneth B.
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