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Browse Prior Art Database

Cleaning Cartridge Detection Device

IP.com Disclosure Number: IPCOM000122386D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Martens, RD: AUTHOR [+2]

Abstract

Described is a method of detecting a cleaning cartridge within a 1/4 inch tape drive. The device detection concept allows the device to properly detect the presence and monitor the operation of the cleaning tape.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 60% of the total text.

Cleaning Cartridge Detection Device

      Described is a method of detecting a cleaning cartridge
within a 1/4 inch tape drive.  The device detection concept allows
the device to properly detect the presence and monitor the operation
of the cleaning tape.

      The cleaning cartridge detection feature requires a unique
cleaning cartridge such that when it is inserted into the 1/4 inch
tape drive, it is not recognized as a data cartridge.  The method of
accomplishing this is described next.  There are three indicators the
device uses to decipher the physical cartridge and magnetic media
position. Each of these indicators and their use are described below:

      Cartridge in Place (CIP) Switch - This indicator is used to
tell the device that a data cartridge has been inserted by the
operator.  This switch is closed when a data cartridge has been
inserted and open when the data cartridge has been  removed.

      File Protect Switch - This indicator indicates whether the
cartridge is file protected or not.  File protected means that the
device is unable to write data on the media. This switch is normally
in the file protect (open) mode and is closed when the cartridge is
inserted in write enable mode.

      Optical Hole Sense LEDs - There are two optical hole sense LEDs
that detect holes in the upper and lower half of the media.  These
sensors are used to determine tape position and are active while a
hole in the media is detected.  A hole in the...