Sony RDR-GX7 - Manual (Page 10)

Sony's Format Compatibility Considerations and
“Dual RW Compatible. ”
Among the various DVD formats with their respective features,
which format is best for use in a home AV-use DVD recorder? In
this chapter we will explain in detail Sony's format compatibility
considerations, and the compatibility offered by the new RDR-
GX7 DVD recorder.
DVD Recorder Format Compatibility at Present
How are the five DVD formats explained in the previous chapter
used in their respective DVD recording machines? Practically all
DVD recorders are compatible with both write-once and re-
writable formats. In home AV-use DVD recorders, for re-writing,
each manufacturer has adopted one format from among DVD-
RW, DVD+RW and DVD-RAM. For a write-once format, in
DVD-RW or DVD-RAM compatible recorders, DVD-R has
been selected, while for DVD+RW compatible recorders,
DVD+R has been selected. The same is true for drives in PCs,
though some products are compatible with multiple formats. In
the PC field, DVD+RW is highly evaluated for its random
writing and high-speed recording compatibility. Needless to say,
each format has its strong and weak points, so the each format
differs in appeal depending upon the importance placed on each
point.
Compatibility With Over 100 Million
DVD Players Now In Use
On which points should importance be placed? In the
development of its DVD recorder, Sony placed primary
importance on playback compatibility; that is, being able to play
the recorded disc on the greatest number of playback devices,
including DVD players and DVD drives in personal computers.
This compatibility is clearly the most important point of a
recording device. For example, a DVD disc recorded on the
recorder in your living room should be able to be played back on
the DVD player in your bedroom, as well as on players owned
by your friends. You should also be able to record videos on
DVD, which can be sent to distant relatives and played on their
players. This is part of the whole appeal of DVD recording. Just
like the many different types of CD playback equipment in use
around the world, when a CD-R or CD-RW is recorded, it should
be able to be played anywhere, on any player, because playback
compatibility is the most important point of recording. If a
recorded disc cannot be played back, it is useless as a recording.
Since DVD players were released onto the market, some 100
million have now been sold worldwide. These players have
become popular because they offer high quality images and
superior sound quality, as well as random access and other
convenient operation features unavailable from any other type of
player. What's more, in the future, even more types of devices are
predicted to have DVD playback capability. Consequently, this
will increase the market opportunities for DVD usage and the
overall requirement for DVD hardware compatibility.
The Concept Called Dual RW Compatible
When considering the features and usage for each format, the
most desirable feature of a DVD recorder is to offer a high level
of playback compatibility through a wide range of formats. This
is the idea behind Sony's format compatibility concept of “Dual
RW Compatible.” Home AV-use DVD recorders will primarily
be used for re-writable discs, so they are compatible with DVD-
RW and DVD+RW, which feature a high degree of playback
compatibility. For high playback compatibility, you can record in
DVD-Video format on DVD-RW discs (in Video mode) or
record on DVD+RW discs. On the other hand, to create discs
with high level disc editing functions, you can record on DVD-
RW discs in DVD Video Recording mode. Essentially, Dual RW
Compatible assures high playback compatibility, while also
incorporating functions to meet various needs, so consumers
will feel greater confidence in selecting equipment that is Dual
RW Compatible.
DVD Recorder based on the Dual RW Compatible
concept – Sony RDR-GX7
Sony is proud to announce the release of the new RDR-GX7
DVD Recorder. Based on the Dual RW Compatible concept
previously explained, it has been designed for compatibility with
both DVD-RW and DVD+RW formats, as well as the DVD-R
format for archiving.
Chapter 3
Sony is Dual RW
Compatible
RDR-GX7 Technical Notes
10
The Dual RW Compatible logo
DVD Video Recording Format (VR mode)
DVD-Video Format (Video mode)
DVD+RW Video Format
DVD-Video Format
Disc types Application Format
*1 "DVD-RW","DVD+RW",and"DVD-R" are trademarks.
*2 CPRM (Content Protection for Recordable Media) is a coding
technology that protects copyrights for images.
DVD-RW *1
DVD+RW *1
DVD-R *1
Ver. 1.1
Ver. 1.1 with CPRM
*2
Ver. 2.0
Recordable discs (Recordable discs are 12 cm only.)