Title: Automatic compensating circuit

Abstract: Circuitry for establishing a variable voltage reference for a circuit which amplifies and shifts an input signal. When a known input signal is applied to the circuitry, a counter is incremented to increase in a stepped fashion the variable voltage until the circuit output reaches a region of tolerance around a desired set point. The counter is then stopped and remains in that state, holding the variable voltage reference at its last value.

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Inventors: Thomas, Dale C. (Ontario, NY, US)

Application Number: 536706
Filing Date: 1974-12-26
Publication_date: 1979-02-20
Assignee: Xerox Corporation (Stamford, CT)
Primary Class(es): 375/318 327/50, 327/100, 375/319, 702/107, 702/124
Other Classes:
US Patent Ref:

3374479	Mar, 1968	Moore	325/400.
3470480	Sep, 1969	Smart et al.	325/400.
3634770	Jan, 1972	Spreitzhofer	328/115.
3754232	Aug, 1973	Gut et al.	340/347.
3772604	Nov, 1973	Hogg et al.	328/169.
3810157	May, 1974	Kallio	340/347.

Other Refs:
Primary Examiner: Safourek, Benedict V.
Assistant Examiner: Masinick, Michael A.
Attorney: