Patent ID: 6381517
Filing Date: 2002-04-30
Classification: G11B

Abstract:
An accessor for retrieving a plurality of data storage media stored in a plurality of storage slots in an automated data storage system and for delivering that retrieved data storage media to one or a plurality of data storages for reading and/or writing data thereon, said accessor comprising:an accessor control card having a revolving memory buffer; a velocity control program stored on said accessor control card; a first gripper; a first gripper motor disposed on said first gripper; a first gripper motor tach disposed on said first gripper motor, wherein said first gripper tach provides at a first time first gripper motor tach information to said velocity control program; a pivot motor; a pivot motor tach disposed on said pivot motor, wherein said pivot motor tach provides at said first time pivot motor tach information to said velocity control program; wherein said velocity control program stores said first gripper motor tach information and said pivot motor tach information in said revolving memory buffer.