Interleaved binary coded signal translation device
AssigneeHer Majesty the Queen in right of Canada
InventorRussell Campbell
Life of this patent
Estimating the term…
Abstract
Apparatus for improved translation of an interleaved binary coded signal heavily masked by noise comprising a plurality of delay line type matched binary code filters for receiving the interleaved signal, preferably of the surface acoustic wave type. Each filter is matched to one of the binary codes from which the interleaved signal is formed. The output signal of each matched filter is split and passed through a delay means and the output of each delay means is summed with the output of each matched filter. The resulting signals can be further processed by adding or multiplying.
Claims13
Apparatus for translation of an interleaved binary coded signal, said signal comprising a plurality of individual signals, said apparatus comprising a plurality of matched binary code filters adapted to receive the interleaved signal in parallel, each filter being matched to one of the individual signals, and means for summing the output signals of each of the matched filters to produce said translated signal.
Apparatus for processing a phase shift or frequency shift keyed signal comprised of interleaved repeating digital code sequences, comprising a plurality of delay line type matched filters, each filter being matched to one of the digital code sequences, means for applying the signal to all of the filters in parallel, and means for receiving the output signals from the filters upon the simultaneous exceeding of a predetermined amplitude threshold from all of the filters.
Apparatus for indicating the presence of a binary coded compound signal comprised of a plurality of interleaved binary coded individual signals, comprising a plurality of surface acoustic wave filters, each matched in capacity and physical and electrical layout to an individual one of the binary coded signals, means for applying the binary coded compound signal to all the filters together, individual summing means each having an input connected to the output of a corresponding filter, individual delay means connecting the output of each of the summing means to a second input of the same summing means, the delay means being adapted to delay translation of a signal therethrough for the period of the binary coded individual signal matched by the corresponding filter;
- and a further summing means for summing the output signals of the individual summing means.
Apparatus for translation of phase or frequency shift keyed interleaved binary coded signals comprising a first surface acoustic wave filter having pairs of fingers physically located, spaced and of the form as to match the binary components of one of the coded signals of the interleaved coded signal, a second surface acoustic wave filter, having pairs of fingers spaced similarly but shifted physically from those of said first filter and matching the binary components of another of the coded signals of the interleaved coded signal, and means for applying said signal to both said filters in parallel, whereby parallel decoding of each of the interleaved signals is obtained.
Dependencies are inferred from the claim text.