Digital communication method and system

A digital communication apparatus, comprising:

• a plurality of transmitting channels;
• a plurality of receiving channels;
• a transmitting means;
• and a receiving means;
• wherein said transmitting means comprising:
• a first wireless switch, a first modulator, and a transmitter;
• wherein said first wireless switch comprising:
• a fiber array made of n input fibers that form one or more input ports to input one or more modulated light signals, or alternatively a wire array made of n input wires that form one or more input ports to input one or more modulated electrical signals;
• electron beam generation means to convert input light signals to modulated electron beams, or alternatively electron beam generation means to convert input electrical signals to modulated electron beams, electron beam deflection means;
• electron beam conversion means which converts modulated electron beam to modulated electrical signal, or alternatively to modulated optical signal;
• one output fiber that form one output port to output one multiplexed optical signal, or alternatively one wire which forms one output port to output a multiplexed electrical signal;
• and a controller and memory means;
• wherein said first wireless switch performs time division multiplexing to multiplex n input electrical signals from said n input wires, or alternatively n input optical signals from said n input fibers and outputs the said multiplexed signal to the said one output port;
• wherein said controller and memory means for performing accuracy of data transfer, controlling the sequence of multiplexed channels in an output data frame, adding a unique identifying signature for each input channel, adding a frame identification signature for said output data frame, and controlling said electron beam deflection devices;
• wherein said first modulator performing digital modulation for the said time-multiplexed signal;
• and
• wherein said transmitter performing amplification and transmission for said time-multiplexed signal to wireless networks, or alternatively to wired networks;
• wherein said receiving means comprising:
• a receiver, second control and memory means, second modulator;
• and a second wireless switch;
• wherein said receiver receives multiplexed data from wired networks, or alternatively wireless networks, amplifying said received multiplexed data, and demodulating said received multiplexed data;
• wherein said received multiplexed data constitute data from multiple channels each with a unique identifying signature;
• wherein second modulator performing multi-level digital modulation on said received multiplexed data;
• wherein said second wireless switch comprising:
• one wire that form one input port to input an electrical signal to said second wireless switch;
• an electron beam generation means to convert said input modulated electrical signal to modulated electron beam;
• a fiber array made of n output fibers that form one or more output ports to output one or more modulated light signals, or alternatively a wire array made of n output wires that form one or more output ports to output one or more modulated electrical signals;
• electron beam deflection devices;
• electron beam conversion means which converts modulated electron beams to modulated electrical signals or alternatively to modulated optical signal;
• wherein said second control and memory means performs data analysis, identification of channels received, and controls the said second wireless switch to deliver a plurality of output signals to a plurality of said output port according to said unique identifying signature for every signal;
• and
• wherein said second wireless switch performs demultiplexing to demultiplex n output electrical signals to said n output wires or alternatively n output optical signals to said n output fibers and outputting each signal to its prospective output port according to said identifying signature for every signal.