CD-R media are enjoying popularity because of the compatibility with CD's, its reasonable cost and the large data capacity. We introduced the newly developed quadruple-speed (4x) CD-ROM writer which can read and write a CD-R disc according to the CD-ROM format four times the speed of the conventional one. The writer is built in our 500disc CD-ROM changer mechanism. This paper summarizes key technologies associated with the quadruple-speed CD-R recording and CD-ROM writer system.
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