Distinct complex signals formed by plural clipping transformations of superposed isochronal pulse code sequences

Claim 2

In an amplitude multiplexed intelligence transmission system, including a multiplex signal conductor carrying composite transmissions of sequences of multiple amplitude pulses in individual time slots of a succession of undivided time slots with each composite transmission formed by superposed combination of selective pulse code mudulated transmissions of a plurality of separate signalling sources, said selective source transmissions having modulation corresponding to relatively distinct code words of a particular code selected from the class of orthogonal, biorthogonal and transorthogonal pulse codes, a receiver comprising: at least two binary threshold comparator circuits coupled in parallel to said signal conductor for distinguishing amplitudes of said received composite transmission falling above and below respective upper and lower threshold limits represented by biasing conditions of said circuits; a source of sequences of reference pulse code modulated signals; and means consisting exclusively of binary logic switching circuits coupled to the binary outputs of said threshold circuits and said source and responsive to the combination thereof for calculating correlation coefficients of said composite transmissions and said source sequences.

Claim 3

In a digital information processing system, including multiple sources of information signals to be handled in multiplex composite form and multiple receiving units capable of receiving said information in said composite form and extracting the information of individual sources, in combination: multiple (up to 2n-1) sources of digital signal sequences of length 2n-1 (n greater than 2) having a bipolar pulse form; said sources operating selectively; issuance or non-issuance of a said sequence representing the value of one data bit to be transmitted from a respective source to at least one of the receiving units; the sequences of different said sources being representations of distinct code words of one orthogonal, biorthogonal or transorthogonal code; means including a plurality (less than 2n-1) of threshold detection circuits responsive to different amplitude levels of the pulses of said analog sequence to produce a like plurality of parallel binary pulse signal sequences containing in combination all of the source data bit information of the composite in a form subject to extraction by binary correlation handling; and at least one receiving unit consisting exclusively of binary handling circuits coupled to receive said parallel trains of binary pulse signals and to extract therefrom information corresponding to the individual data bit transmissions of said multiple code word sources by correlation filtering operations involving only binary handling functions.

Claim 4

In a digital information processing system, including multiple sources of information signals to be handled in multiplex composite form and multiple receiving units capable of receiving said information in said composite form and extracting the information of individual sources, in combination: multiple (up to 2n-1) sources of digital signal sequences of length 2n-1 (n greater than 2) having a bipolar pulse form; said sources operating selectively; issuance or non-issuance of a said sequence representing the value of one data bit to be transmitted from a respective source to at least one of the receiving units; the sequences of different said sources being representations of distinct code words of one orthogonal, biorthogonal or transorthogonal code; means including a plurality (less than 2n-1) of threshold detection circuits responsive to different amplitude levels of the pulses of said analog sequence to produce a like plurality of parallel binary pulse signal sequences containing in combination all of the source data bit information of the composite in a form subject to extraction by binary correlation handling; and at least one receiving unit consisting exclusively of binary handling circuits coupled to receive said parallel trains of binary pulse signals and to extract therefrom information corresponding to the individual data bit transmissions of said multiple code word sources by correlation filtering operations involving only binary handling functions.

Claim 5

A system according to claim 2 wherein said sequence sources are located at various different transmission distances relative to said threshold circuits and are maintained in isochronal and amplitude-equalized transmitting relationships inter se in order to selectively provide time synchronous and amplitude equalized signal elements for combination into said composite.

Claim 6

In an information processing system containing a medium of communication serially linking a plurality of sources of binary information pulse signals and a plurality of associated receiving units iN a serial type multiplex signalling network, the improvement comprising: means establishing isochronal timing relationships and amplitude equalizing relationships between said sources; respective means at up to 2n-1 of said sources (n greater than 2) coupled to said medium cooperative with said establishing means to selectively produce and transmit via said medium equalized amplitude binary pulse signal sequences of digit length 2n-1 representing distinct code words of an orthogonal, biorthogonal or transorthogonal code; said pulse signals having bipolar form consisting of manifestations of equal positive and negative amplitude conditions; said code word representations produced selectively by individual said sources in corresponding time intervals being subject to being combined in said medium into a composite sequence of 2n-1 multi-amplitude analog pulses by algebraic addition of amplitudes of individual bipolar pulses; said composite sequence containing all of the source information represented by the selective production and non-production of the individual bipolar sequences; respective means at said receiving units responsive to said composite sequence to convert said composite sequence to plural (less than 2n-1) sequences of binary pulses, said parallel binary sequences in combination containing all of the source information of said composite in a form eligible for extraction by binary handling; and binary correlation filtering means in said receiving units for extracting from said parallel binary sequences in combination the information represented by the bipolar transmissions of the individual sources.

Claim 7

In an information processing system containing a medium of communication serially linking a plurality of sources of binary information pulse signals and a plurality of associated receiving units iN a serial type multiplex signalling network, the improvement comprising: means establishing isochronal timing relationships and amplitude equalizing relationships between said sources; respective means at up to 2n-1 of said sources (n greater than 2) coupled to said medium cooperative with said establishing means to selectively produce and transmit via said medium equalized amplitude binary pulse signal sequences of digit length 2n-1 representing distinct code words of an orthogonal, biorthogonal or transorthogonal code; said pulse signals having bipolar form consisting of manifestations of equal positive and negative amplitude conditions; said code word representations produced selectively by individual said sources in corresponding time intervals being subject to being combined in said medium into a composite sequence of 2n-1 multi-amplitude analog pulses by algebraic addition of amplitudes of individual bipolar pulses; said composite sequence containing all of the source information represented by the selective production and non-production of the individual bipolar sequences; respective means at said receiving units responsive to said composite sequence to convert said composite sequence to plural (less than 2n-1) sequences of binary pulses, said parallel binary sequences in combination containing all of the source information of said composite in a form eligible for extraction by binary handling; and binary correlation filtering means in said receiving units for extracting from said parallel binary sequences in combination the information represented by the bipolar transmissions of the individual sources.

Claim 8

A system according to claim 4 wherein each said binary processing circuit comprises a forward backward counting circuit with plural counting inputs arranged to receive said plural binary sequences and a reference sequence.

Claim 9

In a network of binary data processing circuits in combination: m discrete data transmission sub-networks comprising: .m binary data signal channels; .m relatively synchronized respective sources of repetitively presented code word function signals representing distinct respective words of a predetermined code having an orthogonal, transorthogonal or biorthogonal property; .m respective means for logically multiplying the respective code word functions by the data signals in respective said channels; means for linearly combining the outputs of said m multiplying means in precise time overlap to produce a composite transmission pulse representation subject to ranging in amplitude over a range of m discrete amplitude levels; and a reception sub-network comprising: .first and second threshold discrimination circuits receiving said m-level composite transmission and responsive to particular amplitude conditions thereof to provide distinct first and second binary output representations; the first discrimination circuit responding to composite amplitudes in excess of a first level and the second discrimination circuit responding to composite amplitudes exceeded by a second level; said first level exceeding said second level; said first and second levels encompassing a range of three levels of said composite range of m-levels; and a binary correlation circuit coupled to said threshold discrimination circuits for logically translating said first and second binary output representations by binary logical manipulations into binary data functions corresponding faithfully to said data signals in said channels.

Claim 10

In a network of binary data processing circuits in combination: m discrete data transmission sub-networks comprising: .m binary data signal channels; .m relatively synchronized respective sources of repetitively presented code word function signals representing distinct respective words of a predetermined code having an orthogonal, transorthogonal or biorthogonal property; .m respective means for logically multiplying the respective code word functions by the data signals in respective said channels; means for linearly combining the outputs of said m multiplying means in precise time overlap to produce a composite transmission pulse representation subject to ranging in amplitude over a range of m discrete amplitude levels; and a reception sub-network comprising: .first and second threshold discrimination circuits receiving said m-level composite transmission and responsive to particular amplitude conditions thereof to provide distinct first and second binary output representations; the first discrimination circuit responding to composite amplitudes in excess of a first level and the second discrimination circuit responding to composite amplitudes exceeded by a second level; said first level exceeding said second level; said first and second levels encompassing a range of three levels of said composite range of m-levels; and a binary correlation circuit coupled to said threshold discrimination circuits for logically translating said first and second binary output representations by binary logical manipulations into binary data functions corresponding faithfully to said data signals in said channels.

Claim 11

A data signalling organization according to claim 6 wherein said data transmission and reception subnetworks are all relatively remote from each other and said combining means comprises a transmission line having coupling connections to outputs of said multiplying means and inputs of said discrimination circuits.

Claim 12

A data signalling organization according to claim 6 wherein said correlation circuit of said reception sub-network comprises: a source of repetitively manifested binary code word reference signals corresponding to one of said function signals and synchronized with said received m-level composite; a forward-backward counter; and means for selectively incrementing or decrementing said counter, for each pulse element of said composite having amplitude exceeding or exceeded by respective said first and second levels, according to a logical selection function conditioned according to predetermined logic rules upon the coincident states of said discrimination circuit outputs and said reference code word signal.