Analog memory system using a temperature sensitive device

Abstract

An analog memory system is disclosed which uses a temperature sensitive device exhibiting a significant hysteresis centered about a predetermined transition temperature and a significant impedance change about such transition temperature to allow discrimination of a large number of identical temperature impedance levels with conventional electronic circuitry. The memory system comprises means for adjusting the temperature of such temperature sensitive device to write-in an input signal in the form of a predetermined impedance of said temperature sensitive device, means for subsequently adjusting the temperature of said temperature sensitive device at such transition temperature to store the input signal, and a converter for accurately converting the impedance of the temperature sensitive device to an analog of the signal stored in the memory system.

Dependencies are inferred from the claim text.