US PATENT SUBCLASS 327 / 350
.~ Logarithmic

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

334  DF  SPECIFIC INPUT TO OUTPUT FUNCTION {9}
350.~ Logarithmic {3}
351  DF  .~.~> With cascade network
352  DF  .~.~> With summing
353  DF  .~.~> With vacuum tube

DEFINITION

Classification: 327/350

Logarithmic:

(under subclass 334) Subject matter wherein the output signal is proportional to an inverse exponential function of the input signal.

(1) Note. Function generators for producing internal logarithmic functions in analog computers are found in Class 364.

SEE OR SEARCH THIS CLASS, SUBCLASS:

346, for producing exponential functions.

SEE OR SEARCH CLASS

340, Communications: Electrical,

805, for selective visual display systems having specified waveform generators coupled to a display. 364, Electrical Computers and Data Processing Systems,

748.5, for digital computer manipulation of operands having a logarithmic format and subclass 857 for analog computer generated logarithmic function signals.