15,486 research outputs found

    Theory and calculus of cubical complexes

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    Combination switching networks with multiple outputs may be represented by Boolean functions. Report has been prepared which describes derivation and use of extraction algorithm that may be adapted to simplification of such simultaneous Boolean functions

    Binary Sequence Detector-Patent

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    Binary sequence detector with few memory elements and minimized logic circuit complexit

    Minimal hardware, binary sequence pseudonoise generator and detector

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    General purpose sequence generator which includes 35-stage field shift register determines mathematical properties of polynomials such as divisibility, period, order of roots, and other parameters that effect desirability of various sequences for specific applications; for example, irreducible polynomials which characterize sequences with randomness properties

    Digital-voltage curve generator

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    Curve generator capable of producing precisely repeatable curve for any single-valued function of voltage versus time uses digital approach, implemented by means of clocked feedback shift register, large scale integrated circuit diode matrix comprising about 12,000 diodes, counter, and digital-to-analog converter

    Generation of key in cryptographic system for secure communications

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    Report discusses key generation for transmission of confidential data. A number of feedback functions are discussed for generation of long key sequences

    Linear Three-Tap Feedback Shift Register-Patent

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    Linear three-tap feedback shift registe

    Binary sequence detector uses minimum number of decision elements

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    Detector of an n bit binary sequence code within a serial binary data system assigns states to memory elements of a code sequence detector by employing the same order of states for the sequence detector as that of the sequence generator when the linear recursion relationship employed by the sequence generator is given

    Principles of error detection and error correction codes

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    Report is reviewed which considers theoretical basis of groups, rings, fields, and vector spaces, and their relationship to algebraic coding theory. Report serves as summary for engineers and scientists involved in data handling and processing systems
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