Analog read-only memory system for antilog conversion

Details Analog read-only memory system for antilog conversion Analog read-only memory system for antilog conversion

1979-09-28

1981-06-30

Fears, Terrell W.

Static information storage and retrieval

Analog storage systems

320 1, G11C 1300

Patent

active

042766150

ABSTRACT:
An analog read-only memory system is provided for converting an input signal to an output signal functionally related to the antilog of the input signal. A resistor-capacitor network conveniently provides an analog memory circuit, converting a linear time base to an output voltage antilogarithmically related to the charging time. Solid state switching devices are actuated in response to control signals to initiate a memory sweep, or capacitor charging cycle, after a time interval determined by the input signal to form the desired antilog conversion; and transferring the output signal to a holding circuit until a subsequent output is provided. The memory sweep is periodically repeated to maintain an output in antilogarithmic relationship with the input.

REFERENCES:
patent: 2787418 (1957-04-01), MacKnight

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