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Also see Recording on a CDRW Disc, a selction of illustrations from Philips regarding re-recordable CD technology (981215)
Compact Disc was first brought to the market in 1981 following a standardisation agreement by Philips and Sony. The standard, often simply called the "Red Book", covers all the parameters required to describe the system. The "Red Book" standard relates to industrially manufactured, prerecorded Compact Discs and the equipment needed to play them.
Compact disc offers the special advantages of no-contact, wear-free scanning and rapid access times. No tape recording system can match these features. Further development of Compact Disc into a record/playback system is therefore a logical development. Philips and Sony have now opened up this possibility with an extension of the CD standard called the "Orange Book"
The "Orange Book" extension of the CD standard envisages two possible techniques for CD recording.
1.1. The CD-Recordable technique. The CD-R technique permits a CD user to make his/her own recordings on a blank CD. Once a recording has been made it can no longer be changed - in other words, erasing and re-recording are not possible. The CD-R disc does, however, have the advantage of conforming to the "Red Book" standard, which means it can subsequently be played on any CD player.
1.2. Magnetic Optical technique. Unlike the CD-R disc, the magnetic optical disc allows recordings to be erased.
There are fundamental differences between this technique and the CD-R. For example, the stored data are read by the detection of the orientation of reflected light (polarisation direction). In contrast, conventional CD players recognise stored data from the intensity of the reflected light.
As some of the basic principles of the"Red Book" standard are not fulfilled - and because the record/playback procedure employs a different technique - it is not possible to play such discs in a conventional CD player. Marantz will be producing equipment using the CD-R technique, as only CDs recorded using this technique are compatible with the "Red Book"; and can be used with every existing CD player.
The following text therefore relates only to the CD-R.
Next Page Page 2, The CD-R Disc: What's different from a "conventional" CD, before, during and after recording.
Page 3: The Recording Process: The preformed tracks and setting the laser power
Page 4:Function Blocks of a CD Recorder: A/D D/A and other modules.