Patent ID: 7068242

Claim:
A head-mounted audio/video playback system comprising: (i) a main-body unit comprising: a left case comprising a left speaker and a recessed part in which a unit-connection terminal provided with a plurality of electrical terminals is provided; a right case comprising a right speaker and a recessed part in which a unit-connection terminal having a same configuration as the unit-connection terminal of the left case is provided; a coupling unit for integrally coupling the left case and the right case; a left audio-signal transmission line for transmitting a left audio signal, which is supplied to the left speaker; a right audio-signal transmission line for transmitting a right audio signal, which is supplied to the right speaker; and a video-signal transmission line, connected to the electrical terminals included in the unit-connection terminal of the left case and the electrical terminals included in the unit-connection terminal of the right case, for transmitting a video signal, and (ii) a video playback unit that can be removably connected to one of the left case and the right case of the main-body unit, the video playback unit comprising: a display element for displaying images; a main body adapted to be fitted into the recessed part of said one of the left case and the right case such that a connection element of the video playback unit provided on the main body is connected to the corresponding one of the unit-connection terminals; and display-element driving means for driving the display element according to a video signal input from the connection element, wherein when the display element is connected to the left case, the display element is positioned in front of a left eye of a user, and when the display element is connected to the right case, the display element is positioned in front of a right eye of the user.