| 摘要 |
A recordable media library is provided wherein the library includes a plurality of carousels, one of the carousels being a primary carousel and the other carousels being sub-carousels. The sub-carousels have recordable media receptacles, such as that used for cartridges of optical or magnetic data. A support such as a framework, is provided. The primary carousel is mounted on the support for rotation about a central axis. The sub-carousels are rotatably mounted on the primary carousel, each sub-carousel having an axis of rotation which is coextensive with the central axis of the primary carousel. With this arrangement any one or a combination of the sub-carousels can be rotated with respect to the primary carousel into a location where a recordable media receptacle can be accessed by one or more cartridge pickers. The cartridge pickers may be mounted on the support for movement along respective axes which are parallel to the central axis of the carousels. With this arrangement the cartridge pickers can reach any cartridge receptacle within the respective sub-carousels. Independent operation of the sub-carousels minimizes the amount of mass to be moved. However, if a sub-carousel should fail, the primary carousel can be rotated, as a back-up, to provide access to any one of the sub-carousels mounted thereon.
|
