(Nikkei BP Group)
(No.1 High-Tech News Site in Japanese)
| Kenwood to Launch Sales of 52x CD-ROM Drive
February 10, 1999 (TOKYO) -- Kenwood Corp. said it will soon start selling
its new UCR-412 CD-ROM drive, which reads data at an average of 50x
(7,500KB/s) and a maximum of 52x (7,800KB/s).
|The new product was jointly developed by Kenwood and ZEN Research Inc.,
a company based in Israel.
The new drive employs the same TrueX multi-beam playback technology used
in the UCR004010 40x drive that was unveiled in the spring of last year,
except that the data transfer rate has been increased.
A single laser beam is split up into seven separate parallel beams by
means of a diffraction grating. Each of the seven beams then is used
to read data from a different recording track on the CD-ROM disk at
the same time.
Because the drive uses constant linear velocity (CLV) technology for
disk-rotation control, almost the same data transfer rate can be maintained
over the whole surface of the disk. By contrast, many currently available
high-speed CD-ROM drives employ constant angular velocity (CAV) technology,
with the drawback that the data transfer rate drops when data is read
near the center of the disk.
With the new drive, when data is read from the innermost tracks of the
disk at 4,750 rpm. For reading data it is read from the outermost tracks,
so the speed is kept down to 1,900 rpm. The drive also has low power
consumption and very little vibration and noise.
Disks are loaded into it via a tray. Its average seek time is 70ms and
the size of its data cache is 2MB. The drive is linked to a host computer
via an ATAPI-compatible enhanced IDE interface.
The drive unit measures 148mm x 42.5mm x 201mm, and weighs around 900g.
Shipments are scheduled to start in mid-February. The monthly production
volume is likely to be around 20,000 units. For the time being, the
drives will only be made available on an OEM basis to manufacturers
of PCs and peripheral equipment.
The price for samples of the product is 30,000 yen (US$260).
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