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video and audio apparatus, namely, signal testers, monitors, converters, processors, encoders, decoders, signal generators, analyzers, players, screen optimizers, noise reducers, switchers, routers, correctors, synchronizers, amplifiers, serializers and deserializers, digital video effects processors; apparatus for the transfer of film to video tape; blank video tapes, blank video discs; digital video effects generators; video signal converters for the purposes of display in a television; television standards converters; electronic apparatus for television broadcast and television studios, namely, antennas, transmitters, encoders, decoders, receivers, amplifiers, converters, monitors, modulators and demodulators, mixers, equalizers, signal generators, synchronizers, time-based correctors, color correctors, noise reducers, test pattern generators, signal compression apparatus, oscillators and filters; software for the operation, control and monitoring of all the aforesaid apparatus; computer software and computer hardware, all for producing video effects