Philips Compact Disc Recordable manual To summarise

Thermo-BalancedWriting

Fig.3 (Fig. 3a & 3b),

Thermo- BalancedWriting:

Thermal “cross-talk” is

reduced byTBW.

fig 3a: Without TBW fig 3b: With TBW

Land before pit Land before pit

Pit Pit

The standard for Pit and Land length is represented by an intersection of the horizontal and vertical lines. The plots, representing the individual measurements of each Pit and Land, in ideal circumstances (no “cross-talk” as example), should be located on the intersections themselves.

The black “dots” in the illustrations represent the average of the measurements of Pit and Land length, and optimal writing would place the black dot on or very near each intersection.

The two charts, one withoutTBW writing, and one with, clearly demonstrate an improvement in writing accuracy with TBW technology especially at the 3T up to 5T pit combinations. (The 3T up to 5T pit combinations are used for approx. 70% of instances of writing data to disc).

The new Philips 12x8x32x CD-RW is the first product to have been introduced utilising TBW technology and from now, all Philips 8x4x32x CD-RW drives have this feature.

To summarise

TBW intelligent drive technology, developed and patented by Philips, is a powerful new feature that adds significant End user benefit. End user confidence in recording CD-R discs is assured by a state-of-the-art drive that can create recordings on previously questionable discs. Data integrity is assured by physically testing each disc and then tuning the output of the recording laser and choosing the recording speed to suit each individual disc. Even if the drive determines to use a recording speed lower than the maximum possible, it will always choose the maximum speed which can safely be used for the disc inserted. New discs are likewise characterised and then written to in accordance with their measured characteristics.

These methods result in an "intelligent" drive, which adapts its behaviour to suit the precise requirements of each individual disc, ensuring the best possible recording quality on all media. It provides a very high success rate even when recording on discs of a quality below the internationally recognised standards.

The TBW technology is developed, qualified and already in production.