DaTARIUS' reference tester for electrical signals, the DaTABANK,
is now also acts as a BD-ROM Mark Analyzer for the BDA/Philips?
BD-ROM Mark disc technology was developed by Philips, Sony and
The BD-ROM Mark technology is part of the content protection
method developed by AACS for Blu-ray. DaTARIUS systems are
equipped Philips' Pit O?Resc board that enables the DaTABANK to
act as a BD-ROM Mark Analyzer.
"Both BD stamper and replica can be analyzed to define whether
the ROM Mark is correctly inserted," says Dr. Andrew Dumbill, CTO
The BD-ROM Mark is a physical mark put on the master during the
encoding, and which is replicated on every disc made from that
master. The BD-ROM Mark enables heavy encryption and is
implemented specifically such that it is impossible to replicate
or copy it. BD-ROM players are equipped with a BD-ROM detector
that will only allow the playback of a disc if a Mark is found
and correctly decrypted.
"Reliable support for BD-ROM Mark verification is essential to
enable flawless quality of Blu-ray Discs in the consumer market,"
says Rob Woudenberg from Philips.
About Philips' Pit O?Resc platform and BD-ROM Mark
The Blu-ray Disc Association has developed content protection
solutions with a physical mark called BD-ROM Mark, which is
expected to provide an effective solution to the problem of
piracy at both the consumer and professional levels.
The "payload" of the mark is a 128-bit key, without which
the encrypted content on the disc cannot be decrypted. The
effectiveness of the BD-ROM Mark is based on the fact that it
cannot be copied by disc recorders.
The BD-ROM Mark can only be applied using equipment available to
licensed BD-ROM disc manufacturers.
Using its experience with the concept of a physical mark
earlier with Super Audio CD, Philips offers the Pit O?Resc
platform solution. The platform acts like an inserter of the
BD-ROM mark to BD-ROM discs, and it will be available to
mastering equipment manufacturers. In addition, its acts as a
detector of the ROM Mark for use in chipsets for BD players and
For verification of the correct BD-ROM Mark, a Pit O?Resc-based
analyzer (part of the DaTARIUS DATABANK system) is available to
verify that the mark has been correctly inserted. To allow easy
process adjustments, an encoder function is available to record
the physical mark with different parameters (a so-called stepper
disc). Together with the BD-ROM Mark analyzer, this provides
instant insight into the optimum mastering/replication parameters
for inserting the BD-ROM Mark onto BD-ROM discs.