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11. Recording capacity of CD-R/RW (74min Recording media)
• (2048 Byte / Sector ) x ( 75 Sector / Second ) x ( 60 Second / Minute) x 74 Minute
= 681,984,000 Bytes = 682 Mbytes
• But the actual recording capacity is about 650 Mbytes. (according to the ISO 9660 standard,
approximately 30 Mbytes are used to make directory structure and volume names.)
12. Super Link
Super(SUPpressed Error Recording) link method is a new technology to link the interrupted recording by
buffer under run. When drive's buffer will be under, the drive will stop recording and store the stop position.
When drive's buffer receive data from HOST again, the drive will seek to the stop position of last recording
and continue writing. In the read procedure, the drive can not find any error in the linking area, the data or
audio will be regenerated perfectly.
13. Optimum record speed
To prevent record fail or readability problem of recorded disc, the drive should decide optimum recording
speed during the recording for the media.
Writing
Speed
22 to 48X CAV(9540 RPM)
48X
40X
32X
24X
16X
1) All media do not support 48x recording by media quality. Even though a CD-R can be recorded by 48x,
there is a possibility to occur fail during recording, especially in high speed writing.
2) So during the recording, Drive checks the Atip and Servo errors, and Drive thinks the current recording
status is unstable, then decreases the recording speed for getting stable record.
3) Drive changes the write pulse and power for low speed CLV recording and continuously checks Atip and
Servo errors during recording.
48
74
Normal Case
Speed Down Case
Time[min]
23
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