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AssigneeUnion Switch & Signal Inc.
InventorsJames P. Brown, Robert P. Bozio
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A signaling apparatus that includes a transmitter having a step-square wave generator for generating a signaling waveform, which waveform is composed of a plurality of square wave signals, and which has an information signal encoded thereupon. The apparatus may also include a signaling waveform receiver, disposed on the railcar, and an information signal decoder, connected to the receiver, for extracting the information signal from the receiver. The stepped-square wave generator produces square waves such that a portion of the duty cycle of one of a plurality of square wave signals overlaps at least a portion of the duty cycle of at least one other of the plurality of square wave signals. A method for signaling in which a multi-stepped square waveform is generated, includes a waveform having a series of superimposed square waves, each of which having preselected amplitudes and duty cycles. An information signal can be encoded upon the multi-stepped carrier waveform such that a coded-carrier signal is created.
A signaling apparatus for transmitting information from wayside to a railway vehicle comprising an information signal transmitter having a stepped-square wave generator for generating a stepped-square wave signaling waveform output, said stepped-square wave signaling waveform output, having a plurality of square wave signals, said stepped-square wave signaling waveform output having information encoded thereupon, and said transmitter transmitting said stepped-square wave signaling waveform output onto rails of a track, said railway vehicle receiving said stepped-square wave signaling waveform output thereby.
A method for signaling, comprising the steps of generating a multi-stepped square waveform having a series of superimposed square waves and at least two waves of said series of superimposed square waves having preselected amplitudes;
A method for signaling, comprising the steps of:
Dependencies are inferred from the claim text.