Patent ID: 7251335

Claim:
A headphone structure having right and left ear cover speakers, a headband interconnecting the speakers and first, second, and third circuit systems therein; said first circuit system being an anti-noise circuit compromising a microphone for detecting noise, phase detection U circuits coupled to said microphone and to each speaker and means for emitting a sound wave of opposite phase to said noise, coupled to said speakers; said second circuit system being a radio circuit system comprising an AM/FM receiver, a U circuit IC, a down converter circuit, a detect circuit, and a demodulator circuit; said third circuit system being a sound collection circuit system comprising an external source audio input terminal, said second circuit system demodulator circuit and said third circuit system audio input terminal being coupled to said phase detecting U circuits in said first circuit system and to said speakers; said headphone system further comprising a cavity formed in the external surface of one of said ear cover speakers, said cavity containing an external input terminal and said cavity being dimensioned sufficiently to receive a MP3 player therein which player is coupled to said external input terminal; said external input terminal disposed in said cavity being coupled to said radio circuit; and a keeper means disposed adjacent said cavity for retaining said MP3 player therein.