Analog memory system using a temperature sensitive device

Details Analog memory system using a temperature sensitive device Analog memory system using a temperature sensitive device

1975-02-11

1976-03-30

Eddleman, Alfred H.

Communications: electrical

Digital comparator systems

307310, G11C 2700, G11C 1500, G11C 1156

Patent

active

039478289

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.

REFERENCES:
patent: 3573495 (1971-04-01), Xylander
patent: 3835458 (1974-10-01), Mrazek
patent: 3851316 (1974-11-01), Kodama

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