US Patent 7937991 Fully digitally controller for cantilever-based instruments
Patent 7937991 was granted and assigned to Asylum Research Corporation on May, 2011 by the United States Patent and Trademark Office.
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A controller for cantilever-based instruments, including atomic force microscopes, molecular force probe instruments, high-resolution profilometers and chemical or biological sensing probes. The controller samples the output of the photo-detector commonly used to detect cantilever deflection in these instruments with a very fast analog/digital converter (ADC). The resulting digitized representation of the output signal is then processed with field programmable gate arrays and digital signal processors without making use of analog electronics. Analog signal processing is inherently noisy while digital calculations are inherently “perfect” in that they do not add any random noise to the measured signal. Processing by field programmable gate arrays and digital signal processors maximizes the flexibility of the controller because it can be varied through programming means, without modification of the controller hardware.
US Patent 07937991 Fully digitally controller for cantilever-based instruments US Patent 7937991 Fully digitally controller for cantilever-based instruments
US Patent 07937991 Fully digitally controller for cantilever-based instruments
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