Pulse or digital communications – Pulse width modulation
Reexamination Certificate
2011-03-15
2011-03-15
Ghayour, Mohammad H (Department: 2611)
Pulse or digital communications
Pulse width modulation
C381S028000, C381S120000, C330S297000, C330S123000, C330S199000, C332S109000, C332S106000
Reexamination Certificate
active
07907664
ABSTRACT:
Systems and method to compress digital video based on human factors expressed as a desirability score are provided. A particular method includes passing a digital input signal through a pulse-width modulator and passing an output of the pulse-width modulator through a power switching device. An output of the power switching device has a plurality of pulses. The method includes receiving the output of the power switching device at a first input of a comparator and receiving a reference voltage at a second input of the comparator. The method includes determining a net signal based on an output of the comparator and determining a timing error signal based on the net signal and the digital input signal. The method also includes adjusting the digital input signal to compensate for harmonic distortion based at least in part on the timing error signal.
REFERENCES:
patent: 5559467 (1996-09-01), Smedley
patent: 5594631 (1997-01-01), Katoozi et al.
patent: 5852632 (1998-12-01), Capici et al.
patent: 7649935 (2010-01-01), Song et al.
Determan Michael
Song Zukui
Ghayour Mohammad H
Malek Leila
Sigmatel, Inc.
Toler Law Group
LandOfFree
Digital adaptive feedforward harmonic distortion... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital adaptive feedforward harmonic distortion..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital adaptive feedforward harmonic distortion... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2649476