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Using Special Features in Libraries 49
Using Special Features in
Libraries
3
Media Vendor Unique Section—optional information written by the media
vendor for their own purposes. Unique to the media vendor.
3
Host Vendor Unique Section—space reserved for use by software
applications for their own purposes. Unique to the software vendor.
Approximately 1 kilobyte.
For details of SCSI commands relating to Cartridge Memory or MAM, see
Read Attributes (8Ch) and Write Attributes (8Dh) in the SCSI Guide.
Use in Libraries
Cartridge memory offers possibilities for use in libraries as an adjunct to or
replacement for barcodes. The following diagram shows the architecture
required. HP is working to provide a standard module with this functionality
via a third party.
Current Libraries — Barcodes
Many libraries use sticky labels with barcodes on cartridges to identify them.
These are read by a barcode reader attached to the picker arm. The
Drive or Library Ultrium Cartridge
RF
coupling
LTO-CM
Reader IC
Host
Controller
Buffer
SPI
Interface
Demodulator/
Decoder
Encoder/
Modulator
Tuning Circuit
Demodulator/
Decoder
Controller
4 KB EEPROM
(128x32 byte)
Encoder/
Modulator
LTO-CM
Transponder IC