You might think that the CD-ROM or CD-R/RW media is really delicate and that read errors can be caused by a slight scratch or bit of dirt on the disc.
You might also wonder whether read errors could occur if the Burn-Proof function created a small gap in the recorded data.

The error correction ability of CD-ROM drive is excellent. It can read a CD which has a black dot (such as a dot from a marker) or a scratch, provided their sizes are supported by the specifications.

The above figures show the error correction status when the CD-ROM drive reads the black dot and the scratch on the CD. The drive reads them with 168 error corrections for the black dot and 110 error corrections for the scratch.

However, you might think that my explanation lacks persuasiveness if I said to you that a　BURN-Proof gap is good-looking when compared to the above extreme examples.

So, let's check the successfully burned (recorded) CD-R disc. Please look at the right waveform. As you can see, there are lots of scratches called "Natural Gaps", even though that the CD-R itself seems to be no problem at all.

The above figure shows the error correction status for the natural gaps. The disc could read 47 error corrections. As a matter of fact, the occurrence of a natural gap is no problem for the drive because it can read black dots and scratches within specifications.

The right figure shows the waveform when BURN-Proof is used for recording at 12x. As you can see, the gap length is shorter when compared with the natural gap.

The above figure shows the error correction status for the BURN-Proof gap. As you can see, the number of the error correction time is just 34, and the repeat of the error correction for the BURN-Proof is less than the repeat of error correction for the natural gap. But then, you might think that no gap at all is much better than error correction. So, I would like to say something more.

The natural gap and error correction feature can be likened to any dust in the air and lungs of animate beings. Ideally, we would like to have pure air, but since we don't live in a perfect environment, our lungs have the capability to deal with impurities. CDs similarly allow some level of dust because drives have an error correction function to deal with it. (An excellent error correction feature allows the disc maker to produce low cost discs.) If the link part of BURN-Proof is likened to the lungs, the link part of BURN-Proof is less like an environment with the dust-filled air than a comfortable office environment.

As I mentioned, "some gaps are allowable", but BURN-Proof continues to evolve, and the CRD-BP1400P and CRD-BP4 which started selling last year, finally achieved zero gaps on CD-R. I will explain this matter in detail in the 2nd chapter. So, please have a look.

< Chapter 1 [About the quality of a BURN-Proof's link portion]
< Chapter 2 [Distance to the achievement of zero gap on BURN-Proof]
< Chapter 3 [The birth of CD-R/RW drive which can stand up to a shock]
< Chapter 4 [Evolving BP technology, New standard for high speed recording]