Temperature stabilization circuit for charge coupled photodiode array
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorRobert R. Atherton
Life of this patent
Estimating the term…
Abstract
A temperature compensating circuit for a Charge Coupled Photodiode array ch monitors a composite video output signal from a video processor and generates an error signal proportional to the square wave resulting from an unbalanced condition. The error signal is used to generate bias voltages which are applied to the Charge Coupled Photodiode array and a degenerative feedback loop is formed which nulls the error signal and automatically balances the array odd and even video outputs.
Claims7
A temperature stabilization circuit for a Charge Coupled Photodiode array system producing a composite video output signal comprised of even and odd video pulses comprising,
- means for separating said composite video output signal into even and odd video pulses,
- a differential amplifier receiving said separated even and odd video pulses and providing an output signal proportional to the differences between the odd and even pulses of said composite video signal,
- an integrator receiving said output signal of said differential amplifier for supplying an odd gate bias voltage drive to said array system, and
- an inverting amplifier receiving said output signal of said differential amplifier for supplying an even gate bias voltage drive to said array system thereby balancing odd and even video outputs from said array system.
A temperature stabilization circuit for a Charge Coupled Photodiode array system producing a composite video output signal comprised of even and odd video pulses comprising,
- first and second switches connected to said composite video output signal and logic means for opening and closing said switches in time synchronism with said even and odd video outputs of said array for separating said composite video output signal into even and odd video pulses,
- a differential amplifier receiving said separated even and odd video pulses and providing an output signal proportional to the differences between the odd and even pulses of said composite video signal,
- an integrator receiving said output signal of said differential amplifier for supplying an odd gate bias voltage drive to said array system, and
- an inverting amplifier receiving said output signal of said differential amplifier for supplying an even gate bias voltage drive to said array system thereby balancing odd and even video outputs from said array system.
Dependencies are inferred from the claim text.