Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Reexamination Certificate
2005-08-05
2008-11-18
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
C327S234000, C327S254000
Reexamination Certificate
active
07453301
ABSTRACT:
The methods and circuits of the various embodiments of the present invention relate to phase shifting of a generated clock signal. According to one embodiment, a method of phase shifting a clock signal using a delay line is described. The method comprises the steps of coupling a first delay line and a second delay line in series; generating a transition edge using the first delay line; generating an opposite transition edge using the second delay line; and outputting a first phase shifted clock signal based upon the transition edge and the opposite transition edge of the clock signal. A circuit for shifting a clock signal is also disclosed.
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Donovan Lincoln
King John J.
Nguyen Hai L.
XILINX Inc.
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