Sony RDR-GX7 - Manual (Page 8)

the recorder can be played back as-is on another player, with the
added flexibility of allowing the disc to be put back into the
recorder for additional recording. Furthermore, recorded contents
can easily be edited on the disc itself.
■ DVD Video Recording format
Known simply as the VR format, the DVD Video Recording
format was established by the DVD Forum for recording moving
video content in real time. This format is used on both DVD-RW,
plus DVD-RAM and together with the random writing capability
of UDF Version 2.00 (explained in the logical format section), it
offers the ability to divide and change the arrangement of
recorded data. Using this capability, it is possible to perform
various editing operations on the recorded contents. Unlike a
conventional disc editing function, which processes the original
recorded data, a virtual editing function, a ‘playlist,’ is provided.
This enables various editing operations without altering the
original recording. In addition, various functions are provided for
recording, for instance, to allow the two languages in a broadcast
multiplex soundtrack to be recorded. It should be noted that
many parts of the recording and editing functions differ from the
intended DVD-Video format, so as a result there is no
compatibility with existing DVD players. However, Sony and
other manufacturers have recently released DVD players which
can play back discs recorded in this VR format. From now on,
Sony plans to equip its DVD players with VR format playback
capability. This will improve the overall playback environment
available for the VR format.
Note: The above mentioned functions can be performed in this format.
However, the functions actually provided on each recorder will differ.
Sony's High Quality Blank Disc Products
Sony has already released blank disc media for DVD-R,
DVD-RW, DVD+R and DVD+RW. The DVD-R and
DVD+R discs use a highly sensitive recording dye
material, while the DVD-RW and DVD+RW discs are
manufactured with a high performance phase change
recording material, for superior image recording
characteristics and highly stable playback.
Disc Media Products for 2002.
Chapter 2
Features of Recordable
DVD Formats
RDR-GX7 Technical Notes
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