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US 5,055,845 AGranted
Signal digitizing method and system utilizing time delay of the input signal
AssigneeDatajet, Inc.
InventorFrank Ridkosil
Life of this patent
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AssigneeDatajet, Inc.
InventorFrank Ridkosil
Estimating the term…
A circuit and method for representing in digital form information about the time and amplitude characteristic of a time-varying input signal. The time-varying input signal is delayed and the magnitudes of the time-varying input signal and its delayed version are compared to produce a digital signal representing the time characteristic of the input signal in the form of a transition in a digital output signal each time the magnitudes of the compared signals have a predetermined relationship. The predetermined relationship may be a condition of approximate equality or when the magnitude of the larger of the compared signals becomes less than the magnitude of the smaller of the compared signals. The invention also includes a circuit for outputting a digital representation of the amplitude of the time-varying input signal for each transition of said digital output signal. The circuits thus provide separate digital representations of the time and amplitude of each peak and valley of an analog or other time-varying input signal.
A converter circuit for converting into binary information an input analog signal having a time-varying amplitude producing amplitude peaks and valleys, the converter circuit comprising digitizer means having an input for receiving the input analog signal and an output for providing a binary signal in the form of a sequence of binary states having durations responsive to the time between peaks and valleys of the input analog signal, the digitizer means including means for producing a delayed version of the input analog signal, and means for comparing the input analog signal with the delayed version and changing the state of said binary signal in response to a predetermined relationship between said input analog signal and said delayed version.
A circuit for representing in digital form durations between amplitude peaks and valleys of an analog time-varying input signal, the circuit comprising:
A method for representing in digital forms durations between amplitude peaks and valleys of an analog time-varying input signal, the method comprising the steps of:
A circuit for extracting amplitude information from a time-varying input signal comprising:
Dependencies are inferred from the claim text.