Audio circuit boards; audio speakers; audio-video circuit boards; computer application software, namely, computer software for use in applications for audio and video conferencing; computer hardware; computer hardware and software for the development, maintenance, and use of interactive audio-video conference systems; computer hardware and software for the receipt, display, and use of broadcast video, audio, and digital data signals; computer software to control and improve computer and audio...

COMPUTERS, COMPUTER PERIPHERALS, AND COMPUTER PROGRAMS FOR ENCODING AND DECODING FOUR CHANNEL AUDIO-VISUAL MATERIALS ONTO AND OFF OF TWO CHANNEL RECORDING AND TRANSMISSION SYSTEMS