Function transformer

Details Function transformer Function transformer

1988-04-18

1991-04-09

Shoop, Jr., William M.

Coded data generation or conversion

Analog to digital conversion followed by digital to analog...

341144, 341155, H03M 100

Patent

active

050068504

ABSTRACT:
A function transformer is disclosed in which apparatus is used to transform an input signal that may be, originally, either in analog or digital form, into an output signal that is a selectable nonlinear function of the input signal, thereby using electronic apparatus where, in previous systems, mechanical apparatus, such as motor-driven cam(s), are usually used for such transformation of input to output.
Although mechanical cams could be used for effecting transformations as disclosed herein, the use of electronic apparatus to effect such transformations, provides for greater flexibility, lower cost, graeter speed of transfomation, and simplicity, where very complex, non-linear, transformations are desired to be effected between data input and data output.
In applications where a potentiometer is to be used to convert an angular displacement of a mechanical rotating shaft to a voltage, and when different variation of output voltage with angular displacement is to be produced, the changing of the taper of the potentiometer can be greatly simplified and the time required to effect the change in taper can be greatly reduced by providing an electronic potentiometer with an easily changeable taper, in the form of a function transformer as disclosed herein.
An apparatus is provided for transforming an analog input signal into an analog output signal that approximates the value of a preselected mathematical function of the analog input signal, by using electronic or electromechanical conversion devices and an electronic data storage device.

REFERENCES:
patent: 4027281 (1977-05-01), Greve et al.
patent: 4141065 (1979-02-01), Sumi et al.
patent: 4225936 (1980-09-01), Lesche
patent: 4316259 (1982-02-01), Albrecht et al.
patent: 4667302 (1987-05-01), Mackey et al.

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