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Technical Notes
37
Note on Connecting IEEE1394 Devices
• Connect the CRW3200IX drive directly to the computer.
• If there is an IEEE1394 device with lower data transfer speed connected between
the computer and the CRW3200IX drive, the data transfer between those two will
be slowed, which may cause failure in writing a disc.
• The IEEE1394 ports on the CRW3200IX drive have 6-pin connectors, but do not
supply power (IEEE1394 bus power).
• Be sure not to connect the devices with closed-loop as follows.
Disc-at-Once (DAO)
This method is used to write all data onto a disc in one operation. It writes multiple
pieces of data without placing a space between data, starting with the innermost
track of the disc. Once data is written by this method, no data can be added to the
same disc even if there is free space available on the disc. This method is useful for
making a backup copy of an entire disc.
Track-at-Once (TAO)
This method is used to write data on a disc on a track-by-track basis. A track can be
defined as the smallest unit of area that contains an ordinary program, image file,
text file, etc. This method enables you to add data to the same disc, one track of data
at a time, as long as there is free space available on the disc. A disc that contains data
written in several sessions is defined as a multi-session disc. An area that records
data and management information (Lead-in/Lead-out) is defined as a session. Lead-
in and Lead-out are signals written for stating the starting and ending points of one
session.
Ordinary audio CD players can only play back single-session discs or the first session on
a multi-session disc. Do not record audio data on the second and subsequent sessions.
Writing Methods
Note