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Among other things, Sony Optiarc supplied the Blu-ray drives for the Sony PlayStation 3. The naming scheme for the drives is as follows: DDU stands for DVD-ROM, AD stands for DVD-RW, BR for BD-ROM and BC for BD Combo. A combo drive is a drive that only supports the newer format in reading and the predecessor in writing.
Compared to a CD's 1.2 mm layer of polycarbonate, a DVD's laser beam only has to penetrate 0.6 mm in order to reach the recording surface. This allows a DVD drive to focus the beam on a smaller spot size and to read smaller pits. DVD lens supports a different focus for CD or DVD media with same laser.
Some examples of products that used the format are a few multitrack "portastudio"-style audio recorders such as Sony's MDM-X4 and Tascam's 564. Sony's MDH-10 MD Data disk drive, meant for use with Windows and Mac PCs, could also play back audio MiniDiscs. However, the drive was expensive compared to the Zip drive and others.
Since optical computer CD/DVD drives are also capable of reading Red Book audio CDs, a lot of player manufacturers [citation needed] use these same CD/DVD ROM drives instead of specialized Audio CD / Video DVD only drives in order to reduce costs. DVD players and car stereo systems seem to have most problems [citation needed] with ...
DVD-Cops See CD-Cops in previous section. DVD region code Restricts region where media can be played by matching region number with configuration flag in DVD players. LaserLock Includes hidden directory on the CD containing corrupted data which will cause errors while being copied. SafeDisc (version 4) See SafeDisc (versions 1-5) in previous ...
This allowed 1.4 GB of data to be burned to a standard 700 MB CD. However, the resulting CD could only be played back on DVD drives with compatible firmware. [4] In 2003, Plextor released a CD burner that utilized their proprietary GigaRec technology to allow users to burn a maximum of 980 MB on a standard 80-minute CD and 1.2 GB of a 99-minute ...