9 Power distribution and control machines and apparatus, namely, [ electric connectors, plugboards,] lightning arresters; [ phase modifiers, batteries and cells, electric and magnetic meters and testers, ] electric wires and cables, antennas, [ aerials,] receiving apparatus, namely, level setters, amplifiers, filters, mixtures, channel preset amplifiers, pilot signal generators, channel proper amplifiers, converters; head end apparatus, namely, channel processors, subrack signal processors, subrack demodulation units, [ ghost clear units; ] subrack type TV modulation apparatus, and other apparatus, namely, BS digital transmodulators, audio-Video distribution units, data transmission units, head amplifiers, input units, output units, mixing units, pilot signal generator units, power source units, [ audio multiplex mixing signal generators, ] desk-top modulators, [ one way addressable center unit, ] field information service center device, converters, status monitor; transmission apparatus, namely, subracks, optical transmitters, optical receivers, amplifiers, unfailure power supply, power supply, power injectors, tap offs, taps, converters; terminal units and data communication apparatus, namely, surge arresters, CATV home boosters, wall outlets, cable modems, [ light breeze headend link controller and cable modems, local broadband subscriber lines, ] optical signal transforming terminal, field information terminal, CATV home terminal; [ electronic circuits, magnetic disks, cd-rom and other storage mediums recorded with computer programs for operating video server networks and multimedia server networks used in cable television industry, telephone industry and broadcasting industry, ]electronic machines and apparatus, namely, computers for operating video server networks and multimedia server networks used in cable television systems, telephone systems and broadcasting systems, [ integrated circuits, large scale integrated circuits,] computer programs for operating video server networks and multimedia server networks used in cable television systems, telephone systems and broadcasting systems; and parts thereof