Simon Mackay wrote,
| The MDS-W1 double-MD deck and some CD-MD combo decks have an analogue
| fallback path where the signal is recorded as an analogue signal through
| this path or as a digital-direct signal.
Right. That of the W1 is buggy, though: it looks at only the is-a-copy bit
and not at the copyright bit, so given SCMS-unlimited material, it makes an
analog transfer. It offers other ways to copy from one disc to another that
do follow the full SCMS specification, though, so it's easily worked around.
| Also the SCMS firmware may support an extra copy generation when the digital
| source is a digital broadcast receiver such as a digital satellite tuner or
| DAB tuner. This exception is well documented with Sony digital-recording
| decks in their SCMS explanation page; and with Philips DCC decks (because of
| the DSR system that was being promoted in Europe at the time of the DCC).
Some people with digital receivers, notably Ralf Kuchenhart, tried to look
into that and to figure out the difference between tuners that allow an extra
generation and those that do not (Sony's diagram in MD recorder manuals that
explains SCMS acknowledges that the second-generation copy is not possible
with some tuners), and no one came up with the answer. There is no SCMS
value that means `antepenultimate'; the penultimate MD recordings made from
satellite broadcasts have something to do with the source medium code or with
the sampling rate conversion.
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