Patent ID: 8031563

Claim:
A library system, comprising: a first library device that includes a first drive for reading information from a data storage medium or writing information to said data storage medium and a first storage cell for storing said data storage medium and a first elevator for transporting said data storage medium; a second library device that includes a second drive for reading information from said data storage medium or writing information to said data storage medium and a second storage cell for storing said data storage medium, and a second elevator for transporting said data storage medium; and a pass-through port mechanism located between said first library device and said second library device that includes a cell for transporting said data storage medium between said first elevator and said second elevator, wherein a space is provided between said first library device and said second library device through which said pass-through port mechanism transports said data storage medium, and in which said pass-through port mechanism is disposed, wherein said first elevator transports said data storage medium between said first drive and said first storage cell, wherein said cell stores said data storage medium, said cell being movable between said first library device and said second library device, and wherein said cell comprises: an arm that is provided with said cell, said arm rotating about an axis; a supporting plate that includes said axis; and a second arm that is provided with said cell, said second arm slides along and rotates about an elongated hole provided with said supporting plate.