Introduction
*1 16X- or 20X-speed writing is enabled with the Partial CAV method. (→P. 6)
*2 10X-speed writing/rewriting is enabled with the CLV method, and the 4X-10X Full CAV method. (→P. 7)
Buffer Underrun Defined
CD-R/RW drives are equipped with buffer memory. This memory temporarily stores data while a disc is being recorded. When buffer memory becomes empty (due to unexpected interruptions or the system’s inability to keep up with the writing process), a write error occurs. This error is known as a “buffer underrun error.”
If data transfer is
interrupted...
Data is stored in
buffer memory...then buffer memory begins to empty
and then written to disc
When no data is left in buffer memory...
(Buffer Underrun)
writing fails (Buffer Underrun Error)
A Buffer Underrun Error will permanently ruin the disc.
Yamaha Buffer Underrun Protection
Buffer Underrun Protection is featured in Yamaha’s CRW2200 series CD-R/ RW drives. When a buffer underrun is about to occur, a buffer underrun error is prevented by temporarily suspending the writing process. Writing resumes when enough data has accumulated again in buffer memory. Buffer Underrun Protection on the CRW2200 series is extremely accurate, resulting in seamless recording between stop and continuation points.
➀ | ➁ |
If data transfer is | Once data transfer |
interrupted... | resumes normally... |
and buffer memory is |
about to empty... |
writing is suspended
enough data has accumulated in
buffer memory...
writing continues
Yamaha Buffer Underrun Protection ensures error-free results.
