High-resolution parametric signal restoration
First Claim
Patent Images
1. A system comprising:
- an input signal modifier configured to generate a modified input signal from a received input signal;
a multiple-gain device, the multiple-gain device comprising;
a first amplifier configured to provide a first output signal derived from the modified input signal, anda second amplifier configured to provide a second output signal derived from the modified input signal, the second amplifier being configured to produce a relatively larger gain than the first amplifier; and
a pulse undershoot module configured to provide a pulse undershoot recovery signal, the pulse undershoot recovery signal being used to offset any AC voltage buildup prior to generation of subsequent modified input signals, andan adaptive response controller configured to derive a compensation signal from the second output signal and to transmit the compensation signal to the multiple-gain device.
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Abstract
Provided are high-resolution parametric signal restoration systems, and applications thereof. Such systems include a multi-output module and a parametric compensator. The multi-output module provides a reference gain output signal and one or more higher gain output signals based on a single input signal. The parametric compensator independently responds to functional parameters of the one or more higher gain output signals to provide a compensation error signal. The single input signal is modified based on the compensation error signal.
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Citations
20 Claims
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1. A system comprising:
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an input signal modifier configured to generate a modified input signal from a received input signal; a multiple-gain device, the multiple-gain device comprising; a first amplifier configured to provide a first output signal derived from the modified input signal, and a second amplifier configured to provide a second output signal derived from the modified input signal, the second amplifier being configured to produce a relatively larger gain than the first amplifier; and a pulse undershoot module configured to provide a pulse undershoot recovery signal, the pulse undershoot recovery signal being used to offset any AC voltage buildup prior to generation of subsequent modified input signals, and an adaptive response controller configured to derive a compensation signal from the second output signal and to transmit the compensation signal to the multiple-gain device. - View Dependent Claims (2, 3)
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4. A system comprising:
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an input signal modifier configured to generate a modified input signal from a received input signal; a first amplifier configured to provide a first output signal derived from the modified input signal, and a second amplifier configured to provide a second output signal derived from the modified input signal, the second amplifier being configured to produce a relatively larger gain than the first amplifier; and a pulse undershoot module configured to provide a pulse undershoot recovery signal, the pulse undershoot recovery signal being used to offset any AC voltage buildup prior to generation of subsequent ones of the modified input signal, and an adaptive response controller configured to derive a compensation signal from the second output signal and to transmit the compensation signal to the multiple-gain device, wherein the input modifier comprises; a first filter configured to filter the input signal; an AC coupling coupled to the first filter and the pulse undershoot module; a summer coupled to the AC coupling; and a second filter coupled between the summer and the first and second amplifiers and configured to produce the modified input signal.
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5. A system comprising:
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an input signal modifier configured to generate a modified input signal from a received input signal; a first amplifier configured to provide a first output signal derived from the modified input signal, and a second amplifier configured to provide a second output signal derived from the modified input signal, the second amplifier being configured to produce a relatively larger gain than the first amplifier; and a pulse undershoot module configured to derive a pulse undershoot recovery signal, the pulse undershoot recovery signal being used to offset any AC voltage buildup prior to generation of subsequent ones of the modified input signal, and an adaptive response controller configured to derive a compensation signal from the second output signal and to transmit the compensation signal to the multiple-gain device, wherein the pulse undershoot module comprises; a pulse undershoot recovery regulator; and a pulse undershoot recoverer coupled between the pulse undershoot recovery regulator and the input modifier.
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6. A system comprising:
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an input signal modifier configured to generate a modified input signal from a received input signal; a first amplifier configured to provide a first output signal derived from the modified input signal; a second amplifier configured to provide a second output signal derived from the modified input signal, the second amplifier being configured to produce a relatively larger gain than the first amplifier; a pulse undershoot module configured to derive a pulse undershoot recovery signal, the pulse undershoot recovery signal being used to offset any AC voltage buildup prior to generation of subsequent ones of the modified input signal; and an adaptive response controller configured to derive a compensation signal from the second output signal and to transmit the compensation signal to the multiple-gain device, wherein the adaptive response controller comprises; an adaptive response filter coupled to at least one of the first and second amplifiers; a bias operating point module coupled to the adaptive response filter; a first proportional offset coupled between the bias operation point module and the first amplifier; and a second proportional offset coupled between the bias operation point module and the second amplifier. - View Dependent Claims (7)
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8. A system comprising:
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an input signal modifier configured to generate a modified input signal from a received input signal; a first amplifier configured to provide a first output signal derived from the modified input signal, and a second amplifier configured to provide a second output signal derived from the modified input signal, the second amplifier being configured to produce a relatively larger gain than the first amplifier; a pulse undershoot module configured to derive a pulse undershoot recovery signal, the pulse undershoot recovery signal being used to offset any AC voltage buildup prior to generation of subsequent ones of the modified input signal; an adaptive response controller configured to derive a compensation signal from the second output signal and to transmit the compensation signal to the multiple-gain device; and a bypass configured to provide a restoration bypass function used to determine channel and sensor offsets during initialization and system calibration.
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9. A system, comprising:
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an AC coupling; a first amplifier having a first gain and configured to produce a first amplified signal based on an input signal received via the AC coupling; a second amplifier having a second gain, which is different from the first gain, and configured to produce a second amplified signal based on the input signal received via the AC coupling; a pulse undershoot module coupled to the AC coupling and configured to reduce an amplitude and time duration of pulse undershoot during recovery of the input signal;
an adaptive response control module configured to generate a compensation error signal based on the second amplified signal; anda summation module configured to add the compensation error signal to the input signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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generating a modified input signal from an input signal; generating a first output signal, based on the modified input signal, the first output signal having a first gain; generating a second output signal, based on the modified input signal, the second output signal having a second gain that is larger than the first gain; determining a pulse undershoot recovery signal that reduces a pulse undershoot recovery time between first and second pulses of the modified input signal, the pulse undershoot recovery signal being used during subsequent performing of the generating of the modified input signal; and determining a compensation signal from the second output signal based on at least one of a thermal drift, signal noise, and DC offsets, the compensation signal being used during subsequent performing of the generating the first and second output signals.
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Specification