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Title: Simulated communications system
Claims: What is claimed is: 1. A system providing for communications among a plurality of independent communications stations, said system comprising a plurality of communications stations, a plurality of pulse width modulated communications channels, means in each station for selecting one of said pulse width modulated communications channels for transmission and reception, and computer controlled digital means for directing communications among said individual stations to provide for communication nets each comprising selected stations and to prevent communications between selected stations. 2. The system defined in claim 1 wherein said channel selection means comprises means for selecting a value representative of a channel, a counter, a source of clock pulses, means for connecting the output of said source of clock pulses to the count input of said counter, a parallel comparator having at least two sets of inputs, and means for connecting the output of each stage of said counter to one set of said inputs and for connecting said value selecting means to said other set of inputs so that said comparator generates an output signal when the values on said two sets of inputs correspond. 3. The system defined in claim 2 wherein said computer controlled digital means comprises a switching matrix having at least as many switching combinations as there are combinations of values stored in said counter, means for connecting each of said stations to the stitching devices of said matrix, a source of digital control, and means for connecting said source of digital control to said switching means of said matrix to determine which of said stations are coupled together. 4. The system defined in claim 2 wherein said computer controlled digital means includes a matrix comprising a plurality of communications nets channels and a plurality of inputs from the individual stations, said matrix further including switching means for selectively connecting each of said station inputs to each of said channels, means for connecting each of said stations to said individual switching means, a source of digital control, and means for connecting said individual switching means to said source of digital control so that said source determines which of said stations are connected to which of said communication nets channels. 5. A communications system for simulating tactical conditions and providing communications among a plurality of individual communications stations, said system comprising: a. a first group of communications channels comprising different intervals of time; b. first means at each station for selecting individual channels from said first group for transmission and reception, said first selection means being under the control of a person at each station; c. a second group of communications channels, said second group being formed by separate transmission paths; and d. second means for selecting individual channels of said second group, said second selection means being controlled by a digital computer to enable selected groups of communications stations to communicate with each other while preventing communications between selected stations. 6. The system defined in claim 5 wherein said first selection means comprises means at each station for selectively generating a numerical value representative of the channel identifications, a clock for generating increasing numerical values, a comparator, and means for applying the numerical value representative of the channels to one side of said comparator and the output from said clock to the other side of said comparator so that said comparator generates an output when the two inputs values are equal. 7. The system defined in claim 5 wherein the second selection means comprises a plurality of switching devices, means for connecting individual stations to one side of a switching means, means for connecting each of said transmission paths to a source of digital control signals, and means for connecting the output of said source of control signals to the individual switching means to connect the individual stations to the individual transmission paths under the control of said source. Other info: Inventors: Eisenberg, Robert M. (Woodbine, MD, US) Application Number: 604568 Filing Date: 1975-08-14 Publication_date: 1976-10-12 Assignee: The Singer Company (Binghamton, NY) Primary Class(es): 370/212 370/201 Other Classes: US Patent Ref:
Other Refs: Primary Examiner: Stewart, David L. Assistant Examiner: Attorney: Reichman; Ronald, Kesterson; James C. |
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