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Primary Examiner: Sloyan, Thomas J.
Assistant Examiner:
Attorney: Bissell; Henry M., Jason; Walter J., Royer; Donald L.

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Title: Integrating analog-to-digital converter

Abstract: An integrating analog-to-digital converter particularly adapted to measure inertial instrument outputs for strap-down navigation. In the converter, an input signal is summed with a number of precisely quantized voltage pulses and is integrated. An error signal at the output of the integrator controls the rebalance duty cycle of the converter. Counting the net rebalance quanta over an interval results in an output count which is proportional to the input signal voltage.

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Other info:

Inventors: Meares, Lawrence G. (Rancho Palos Verdes, CA, US)

Application Number: 820373
Filing Date: 1977-07-29
Publication_date: 1981-03-03
Assignee: McDonnell Douglas Corporation (Long Beach, CA)
Primary Class(es): 341/157 324/99D, 341/127, 341/158
Other Classes:
US Patent Ref:

3305856	Feb, 1967	Jenkinson	340/347.
3473045	Oct, 1969	Niemann	307/291.
3473053	Oct, 1969	Kardash	307/291.
3500109	Mar, 1970	Sugiyama et al.	340/347.
3790821	Feb, 1974	Adamson	307/273.
3918050	Nov, 1975	Dorsman	340/347.
3942172	Mar, 1976	Tucker	340/347.
3955191	May, 1976	Lambourn	340/347.
4005284	Jan, 1977	Rhodes	340/347.

Other Refs: Other References: Hnatek, A User's Handbook of D/A and A/D Converters, J. Wiley & Sons, 1976, pp. 255-262.
Hoeschele, Analog-to-Digital/Digital-to-Analog Conversion Techniques, John Wiley & Sons, Inc., 8/1968, pp. 356-358, 372, 373.
Millman et al., Pulse and Digital Circuits, McGraw-Hill Book Co., 1956, pp. 140-143, 323-327, 400-405.
Hurley, Transistor Logic Circuits, John Wiley & Sons, Inc., 1961, pp. 252-259.