Frequency encoded logic devices
First Claim
1. In a logic apparatus for performing logic operations on frequency encoded signals, the improvement comprising:
- means for decoding and encoding optical input and output signals to and from said apparatus, said signals having three frequency components, said means includingfrequency sensing decoding means for sensing the presence or absence of said three frequency components in said input signals and converting said frequency signals to specific electrical binary signals having logic levels indicative of presence or absence of said frequencies;
a binary logic circuit adapted to accept said electrical binary signals from the decoding means, to perform logic operations on said signals, and to provide an output ensemble of electrical binary signals; and
frequency selecting encoding means for converting said ensemble of electrical binary signals to output optical signals having said three frequency components whereby there is encoded logic levels of specified ones of said individual binary signals as presence or absence of said frequency components.
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Abstract
Logic devices for frequency encoded trinary logic signals are simulated by standard binary circuits. The binary circuits include frequency sensing and frequency selecting devices at the inputs and outputs thereof for decoding the frequency encoded trinary logic signals to binary level logic signals and for frequency encoding the resulting binary output to trinary logic signals. Optical encoding using the three primary light frequencies provides a convenient trinary signal format for the frequency encoded signals. A latch register, a shift register, a half adder and full series and parallel adder circuits are disclosed.
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Citations
15 Claims
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1. In a logic apparatus for performing logic operations on frequency encoded signals, the improvement comprising:
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means for decoding and encoding optical input and output signals to and from said apparatus, said signals having three frequency components, said means including frequency sensing decoding means for sensing the presence or absence of said three frequency components in said input signals and converting said frequency signals to specific electrical binary signals having logic levels indicative of presence or absence of said frequencies; a binary logic circuit adapted to accept said electrical binary signals from the decoding means, to perform logic operations on said signals, and to provide an output ensemble of electrical binary signals; and frequency selecting encoding means for converting said ensemble of electrical binary signals to output optical signals having said three frequency components whereby there is encoded logic levels of specified ones of said individual binary signals as presence or absence of said frequency components. - View Dependent Claims (2, 3)
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4. A logic apparatus for performing logic operations on an input optically encoded signal and producing at least one output signal comprising:
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optical frequency sensing means for converting presence or absence of predetermined optical frequencies in said input signal to binary encoded signals having binary signal levels, binary logic means for receiving said binary encoded signals and performing logic operations on said signals, said binary logic means including means for providing an ensemble of output binary signals, and frequency selecting means for converting said ensemble of output binary signals to presence or absence of said optical frequencies in an output optically encoded signal representing the logic operations performed on said input optically encoded signal. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification