Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Reexamination Certificate
2008-09-09
2008-09-09
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
C327S176000, C327S158000
Reexamination Certificate
active
11413630
ABSTRACT:
An apparatus for enabling duty cycle locking at the rising/falling edge of the clock includes a counter that receives a gated input clock. A lock detector receives an input clock for generating control signals. An address decoder is connected to the counter for generating a set of selection signals. A first multiplexer includes select lines connected to receive the selection signals. A plurality of delay chains provide multiple output taps with a first delay chain connected to the first multiplexer. A second multiplexer is connected to one of the plurality of delay chains with its select lines being hard wired. A latch is connected to the output of the first multiplexer and the second multiplexer for providing the output.
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Sareen Puneet
Singh Sashi P.
Luu An T.
STMicroelectronics Pvt. Ltd.
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