Patent ID: 7181024

Claim:
A portable audio listening apparatus comprising: a transmission apparatus and a portable receiving apparatus electrically and mechanically structured as different units, the portable transmission apparatus comprising: means for generating an audio modulated signal modulated in a band in which a signal is transferred by using a human body of a single user, wherein the audio modulated signal is generated based on stored audio data; and a first electrode for outputting the generated audio modulated signal, and the portable receiving apparatus comprising: a second electrode for receiving the audio modulated signal transferred through the first electrode and then through the body of the single user; means for demodulating the audio modulated signal received by the second electrode and downloading said demodulated signal into said audio listening apparatus for storage; and means for generating audible sound according to the stored demodulated signal; wherein said second electrode is adapted to receive the audio module signal sent from an audio-signal transmission apparatus, wherein the portable receiving apparatus further comprises a transmitter for transmitting a second audio modulated signal through the body of the single user; and wherein the portable audio listening apparatus includes a second portable receiving apparatus, wherein the second portable receiving apparatus includes: a third electrode for receiving the second audio modulated signal transferred through the body of the single user; second means for demodulating the second audio modulated signal received by the third electrode; and second means for generating audible sound according to the demodulated second audio modulated signal.