Pulse or digital communications – Systems using alternating or pulsating current – Angle modulation
Reexamination Certificate
2005-06-29
2009-12-01
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Angle modulation
C327S031000
Reexamination Certificate
active
07627053
ABSTRACT:
An apparatus for driving a pulse width modulation reference signal includes: (a) A converting unit receiving an input signal at an input locus and presenting an output current at an output locus. The input signal varies at a first frequency. The output current is substantially related with the first frequency. (b) A capacitive element coupled with the output locus for charging by the output current. The pulse width modulation reference signal is related with voltage across the capacitive element.
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Li Xuening
Muratov Vladimir A.
Wiktor Stefan W.
Brady III Wade J.
Liu Shuwang
Neff Michael R
Patti John J.
Telecky , Jr. Frederick J.
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