integrated circuits; digital and analog input/output subsystems, comprising integrated circuits, printed circuit boards, electrical connectors, and transducers/speakers; computer firmware for use in signal processing, user interface controls, and communication protocols, in the field of data, digital audio and video applications; and computer software linking personal computers with high level signal processors for use in the fields of communications and digital entertainment recording, playb...

integrated circuits; digital and analog input/output subsystems, comprising integrated circuits, printed circuit boards, electrical connectors, and transducers/speakers; computer firmware for use in signal processing, user interface controls, and communication protocols, in the field of data, digital audio and video applications; and computer software linking personal computers with high level signal processors for use in the fields of communications and digital entertainment recording, playb...