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Browse Prior Art Database

Enhanced Modes for a Continuously Recycling Cartridge Autoloader

IP.com Disclosure Number: IPCOM000116641D
Original Publication Date: 1995-Oct-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 73K

Publishing Venue

IBM

Related People

Christiansen, DA: AUTHOR [+5]

Abstract

Disclosed are enhanced modes of operation for a magazine based autoloader with features that allow these modes of operation to continuously process unused data cartridges.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Enhanced Modes for a Continuously Recycling Cartridge Autoloader

ABSTRACT:

Disclosed are enhanced modes of operation for a magazine based
autoloader with features that allow these modes of operation to
continuously process unused data cartridges.

INTRODUCTION:

Sequential feed modes in other autoloaders have one or more
limitations.
  *  Some allow only one pass through the n slots in their cartridge
holder.  Allowing only a single ordered path through the n slots
constrains  the operator to exercise a greater degree of caution in
the placement of cartridges in the slots.
  *  Others cannot tell between cartridges that have been processed
and
those that have not been processed.  The lack of differentiation
between used and unused cartridges causes a waste of resources
(putting away unused cartridges as used).
  *  Others are stored behind "glass walls" (doors, windows, etc.) to
limit access to the cartridges by the operator.  The "glass walls"
cause the operator to have to make his ordering decisions and then
commit the entire magazine to that decision.  The "glass walls" also
make it difficult to adapt these autoloaders for use in robotic
library systems.

ENHANCED MODES:

An autoloader can be designed that does not have a "glass wall"; it
has means to detect whether or not the cartridge has been used
(various sensors); and, can detect if an unused cartridge exists
anywhere in the magazine.  The enhanced new sequential modes make use
of these characteristics to enhance the autoloader's functions.

When a cartridge is unloaded from the drive to the magazine by using
the above mentioned autoloader features, these modes know if another
unused cartridge is available.  If one exists, these modes will find
the next unused cartridge no matter where the cartridge is positioned
in the magazine.

The device has a mechanism to inform the operator which ...