Information Today
Volume 17, Issue 11 • December 2000
Yamaha Introduces New CD-RW Recorders

Yamaha Corp. of America has announced the release of what it says is the industry’s fastest internal and external rewritable CD recorders. The new, multi-platform LightSpeed CRW2100 Series models are capable of recording on CD-R discs at a top speed of 16x; writing a 74-minute CD in under 5 minutes; rewriting CD-RW discs at a top speed of 10x; and reading CDs at a sustained maximum rate of 40x. In addition, the CRW2100 Series allows users to rip audio CDs at a maximum speed of 40x—up to five times faster than conventional CD-RW recorders currently in the marketplace—allowing digital audio extraction of a 74-minute audio disc in less than 3 minutes. (Ripping is the process of converting CD music tracks to WAV and MP3 files for creating music CDs on a PC.)

“Yamaha pioneered CD recording and is the industry standard in CD-RW recorders,” said Tom Sumner, general manager of Yamaha’s Consumer Products Division. “The introduction of the CRW2100 Series re-establishes Yamaha’s technology leadership in the CD-RW market. This breakthrough product will create even more consumer interest in a market which is already projected to grow by 85 percent this year.”

To achieve the industry’s fastest CD-R write speed, Yamaha developed the CRW-2100 Series to take advantage of the partial Constant Angular Velocity (CAV) technology, a combination of CAV and standard Constant Linear Velocity (CLV), for optimum performance. To rewrite a CD-RW disc at up to 10x speed, the Light-Speed recorders use the full CAV recording method.

The CAV recording method keeps the disc-rotation speed constant while adjusting the data-transfer rate, depending upon which portion of the disc is being recorded. For writing CD-R discs, the CRW2100 Series uses CAV in the inner portion of the disc while using CLV in the outer portions in order to deliver a top writing speed of 16x. Also known as partial CAV, this method enables a significant increase in the data transfer rates while minimizing the load increase to the drive’s mechanism.

“By applying partial CAV technology instead of the conventional CLV, our new recorders do not require additional time for controlling the rotation speed of the motor, allowing for faster, smoother recording,” said Allen H. Gharapetian, product and marketing manager for Yamaha’s Consumer Products Division. “The CRW2100 Series also applies Yamaha’s exclusive Pure-Phase Laser System, which, by compensating for the unwanted glare created on the disc surface during recording, improves jitter levels (deviation from correct signals) by over 25 percent, harnessing extra laser power previously unused.”

Yamaha has also equipped the CRW-2100 Series with Optimum Write Speed Control. By checking a disc’s capability and the recording conditions, this new technology allows the LightSpeed recorders to select the optimum writing speed to further improve reliability. The CRW2100 Series recorders also incorporate Yamaha’s Waste-Proof Write Strategy. Unlike other write strategies that rely heavily on data-links and error corrections, Yamaha’s write strategy focuses on providing a robust, stable recording environment by combining a large buffer memory, CAV writing support for on-the-fly data backup, and specific fine-tunings to the recording software. This strategy maximizes harmony between the recorder and the PC, virtually eliminating buffer underruns and preventing waste of media.

The CRW2100 Series recorders offer an extra-large 8-MB buffer memory—up to 4x larger than that of competitive recorders. The new LightSpeed recorders are designed to take full advantage of the new, high-performance 16x CD-R media to optimize record speed and reliability.

Source: Yamaha Corp. of America, Buena Park, CA, 714/522-9011;

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