Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Reexamination Certificate
2005-08-30
2005-08-30
Lam, Tuan T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
Reexamination Certificate
active
06937083
ABSTRACT:
Analog signal conditioning circuitry is provided for processing an analog signal generated by a sensor to remove DC offset. The signal conditioning circuitry includes an amplifier having the first input receiving an analog input signal and a second input receiving a reference signal. The amplifier includes an output providing an analog output signal defined by an amplified representation of the analog input signal and the reference signal. The circuitry includes a feedback circuit having an input coupled to the amplifier output and an output coupled to the first input of the amplifier for providing an analog feedback signal. The feedback circuit includes an analog-to-digital converter for converting the analog amplifier output to a digital signal, a digital controller for processing the digital signal, and a digital to analog converter for converting the processed digital signal to an analog feedback signal.
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Keyse Mark R.
Manlove Gregory J.
Chmielewski Stefan V.
Delphi Technologies Inc.
Lam Tuan T.
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