99 min CD-R's are getting more and more popular but are unfortunately not a standard in the CD specifications. This is also the reason why many CD-ROM drives have difficulties reading them and why some CD-RW drives are not able to write them at their full capacity. Philips has now updated the specifications of the High Capacity Recordable discs, as they are oficially called. This does not mean the 99 min CD-Rs are now fully accepted, but they are now getting standarized.
The company has also updated the specifications of the CD-RW discs, that now describe speeds up to 24x, as we already have seen in the latest CD-RW drives. The 8x-24x CD-RW discs are called Ultra Speed CD-RW discs.
High Capacity Recordable Disc system, Version 0.9 |
This document describes High Capacity Recordable discs with a maximum single session time of 98 minutes, 29 seconds, 74 frames on 12 cm discs. For 8cm discs the playing time will be roughly 30 minutes. The recorded High Capacity Recordable is not fully compliant with the Red Book, but will be playable on the majority of the installed base CD players. To avoid any misunderstanding about the compatibility of the High Capacity Recordable Discs: The use of a CD logo is not allowed on this disc.
Orange book Part III CD-RW Volume 3, Ultra Speed, Version 1.0
Released for distribution: tentative version of Part III CD-RW Volume 3, Ultra Speed. This book describing CD-RW discs with recording speeds in the range 8x up to 24x nominal CD speed.
This information is intresting to us (consumers) because specifications - if all companies use them as they are made - make sure that compatibility is assured.
Source: Philips
