Abstract: An apparatus and system for recording, playing, handling, and storing a plurality of media disks in a plurality of configurations and a device for moving any disk into and out of a media disk storage mechanism and into or out of a selected media player/recorder on demand, and a controller for directing operation of the device for moving the disks and controlling selection of operation of the media disk storage mechanism.

Abstract: A disc changer includes a disc cartridge having an insertion hole, a case body into which the disc cartridge is inserted, having first and second shells which can be separated in which a plurality of disc-shaped recording media are storable by being arrayed in the axial direction of the center axis, and a lock lever for locking the shells in a connected state; and a disc holder to hold the inserted disc cartridge, including an unlocking piece which unlocks locking between the shells by being inserted into the insertion hole when the disc cartridge is inserted into the disc holder to press the lock lever, and a restricting lever supported by the unlocking piece, including a restricting portion engaged with the case body when the unlocking piece is inserted into the insertion hole, so that locking between the shells is unlocked, the restricting lever restricting movement in the extracting direction.

Abstract: An apparatus and system for recording, playing, handling, and storing a plurality of media disks in a plurality of configurations and a device for moving any disk into and out of a media disk storage mechanism and into or out of a selected media player/recorder on demand, and a controller for directing operation of the device for moving the disks and controlling selection of operation of the media disk storage mechanism.

Abstract: An apparatus and system for recording, playing, handling, and storing a plurality of media disks in a plurality of configurations and a device for moving any disk into and out of a media disk storage mechanism and into or out of a selected media player/recorder on demand, and a controller for directing operation of the device for moving the disks and controlling selection of operation of the media disk storage mechanism.

Abstract: An apparatus and system for recording, playing, handling, and storing a plurality of media disks in a plurality of configurations and a device for moving any disk into and out of a media disk storage mechanism and into or out of a selected media player/recorder on demand, and a controller for directing operation of the device for moving the disks and controlling selection of operation of the media disk storage mechanism.

Abstract: A disk-type recording medium is carried by a disk carrying section and accommodated into one of layered accommodation shelves of a disk accommodation section. A memory stores position information of the disk carrying section with respect to the accommodation shelves. A controller controls the disk carrying section in accordance with the stored position information to move to a position corresponding to each accommodation shelf. A stopping state detection section includes a light emitting element and a light receiving element provided on the disk carrying section adjacent the disk accommodation section and detects a stopping state of the disk carrying section with respect to each accommodation shelf based on a received light amount of the light receiving element depending upon a state of a light intercepting disk which is transferred between the disk carrying section and the accommodation shelf.