Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Reexamination Certificate
2006-01-31
2006-01-31
Nguyen, Linh My (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
C327S178000
Reexamination Certificate
active
06992516
ABSTRACT:
A pulse duty cycle automatic correction device has a pulse width detector for detecting the high, low level pulse widths of the input cycle pulse so as to generate high, low level signals; a comparator encoder for comparing the high, low level signals, calculating out a correction delay time, and generating a correction delay signal and an output selection signal; a delay circuit for generating a delay cycle pulse; a compensation circuit for compensating the input cycle pulse so as to generate an input compensation pulse; a logic circuit for generating two cycle pulses according to the delay cycle pulse and the input compensation pulse; and a multiplexer for receiving the two cycle pulses and the input cycle pulse, and generating the output cycle pulse with duty cycle of 50% according to the output selection signal.
REFERENCES:
patent: 6040726 (2000-03-01), Martin
patent: 6229359 (2001-05-01), Chesavage
patent: 6452432 (2002-09-01), Kim
patent: 6731158 (2004-05-01), Hass
Ali Corporation
Birch & Stewart Kolasch & Birch, LLP
Nguyen Linh My
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