Patent ID: 7450330
Filing Date: 2008-11-11
Classification: G11B

Abstract:
1. A library apparatus storing one or more recording mediums for writing and reading information with a host computer, comprising: a plurality of robot units, each robot unit configured to carry the recording mediums; and a control unit, which, if an event is generated, stops power from being fed to the robot units until a predetermined time, which is set irrelevant of the progress of the event, elapses, the control unit maintaining a state that is able to respond to the host computer during the predetermined time, and transmitting, in response to a query from the host computer, a response representing that the processing of the event is in progress; wherein if an execution instruction has already been given from the host computer to the control unit before the event generation, the control unit makes the robot units operate to complete the execution instruction in advance of the stoppage of power to the robot units; and if the predetermined time elapses, the control unit discontinues the event irrelevant of the completion of the event, and resumes feeding power to the robot units.