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Automatic Positioning of an Optical Volume to Proper Side Disclosure Number: IPCOM000037286D
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2005-Jan-29

Publishing Venue


Related People

Freeman, HL Mustain, RG [+details]


Described is a technique that mounts an optical volume into a mass optical storage device (MOSD) such that a side to be accessed is always loaded properly under a read/write mechanism. Time needed to flip the volume if the wrong side was mounted is eliminated. Information already known to the system and an operational convention to eliminate the extra flip are utilized. This is in marked contrast to a typical entry process which directly mounts the media to an optical disk drive: The volume label on the first side of the media is read, and system tables are updated to indicate the volume is no longer off-line but within the MOSD. The media is then flipped over using MOSD robotics, and an opposing side of the media is read. Again the system tables are updated to indicate this volume is within the MOSD.