Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Rectangular or pulse waveform width control
Reexamination Certificate
2006-02-07
2006-02-07
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Rectangular or pulse waveform width control
C327S175000
Reexamination Certificate
active
06995592
ABSTRACT:
A method and system for generating variable frequency cyclic waveforms using pulse width modulation (PWM) to provide adjustable precision frequency and enhanced resolution is disclosed. The technique includes a plurality of sets of duty cycle values, each set corresponding to the desired waveform profile at a given frequency, coupled with a mechanism for applying a selected duty cycle for a variable number of PWM cycles, to achieve an adjustable fine resolution of the waveform frequency.
REFERENCES:
patent: 6271733 (2001-08-01), Alzu et al.
patent: 6396317 (2002-05-01), Roller et al.
Burton Esq. Carol W.
Hogan & Hartson L.L.P.
Kubida, Esq. William J.
Le Dinh T.
STMicroelectronics Pvt. Ltd.
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