Patent ID: RE40827

Claim:
An apparatus for extending propagation distance of digital data signals over distance-limited wire media comprising: a first multiple-pin connector configured to carry first input signals in a first differential pair, to carry first output signals in a second differential pair, and to carry power; a second multiple-pin connector configured to carry second input signals in a third differential pair, to carry second output signals in a fourth differential pair, and to carry power; a power line between the first connector and the second connector; a ground line between the first connector and the second connector; electromagnetic chokes adjacent ingress locations in the power line; electromagnetic chokes adjacent ingress locations in the ground line; transient voltage protection means between the power line and the ground line operative to filter both common mode transient voltage and differential transient voltage in order to isolate said apparatus from unwanted transients; a low-capacitance electric pulse suppression means operative to suppress both voltages and current anomalies in order to achieve maximum distance of signal in usable pulse shape, between each element of said first, second, third and fourth differential pairs and ground adjacent each said first and second connector; a first pulse shaping and repeating circuit for shaping and repeating pulses of said input signals received and for transmitting said output signals; a second pulse shaping and repeating circuit for shaping and repeating pulses of said input signals received and for transmitting said output signals; first isolation transformers coupled between said first connector and said first pulse shaping circuit for common mode transient and voltage isolation and for electromagnetic interference filtering of said first differential pair and said second differential pair from said first pulse shaping circuit, said first isolation transformers being capable of maintaining magnetizing inductance at elevated temperatures; second isolation transformers coupled between said second connector and said second pulse shaping circuit for common mode transient and voltage isolation and for electromagnetic interference filtering of said third differential pair and said fourth differential pair from said second pulse shaping circuit, said second isolation transformers being capable of maintaining magnetizing inductance at elevated temperatures; a programmed logic device coupled to said first and second pulse shaping circuits for coupling input signals originating from the first connector directed to the second connector and for coupling input signals originating from the second connector directed to the first connector; and a microcontroller coupled to said pulse shaping and repeating circuit for distinguishing and controlling between types of input signals and output signals, and for managing control signals for compatibility.