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Posted by Bill Vermillion on 01/27/07 20:15
In article <ennlgs$6le$1@zinnia.noc.ucla.edu>, Alpha <none@none.NET> wrote:
>
>"Martin Heffels" <twentyfourthof@november.edu> wrote in message
>news:nr6rp257ds2mtb6u27f5erv0hebom5dk8l@4ax.com...
>> There are no more worries. We can play 'm both with a single player from
>> now on :-) LG will introduce a HD DVD and Blu-ray-combi-player at CES!
>>
>> cheers
>>
>> -martin-
>> --
>This is not clear. In September, LG announced this, then
>immediately retracted the announcement stating they had no design
>for a combi. Now the same thing appears again.
>As one reviewer said: I will believe it when I see it.
>Even if it does come out, it may cost mega $$ since the laser and
>drive mechanism are many times more technically difficult than a
>single drive.
Actually about a year ago one of the NE Asia electronics firms
announced a chip that basically had three 'laser' wave-lengths
to be able to handle CD, DVD, and the Blu-Ray/HD-DVD formats.
Just yesterday I re-read the printout from the web site, so I don't
have pure HTTP link, but here are a couple of lines from the
announcment. [It indicates it came from the Sep. 27,2005 issue
of NEAsiaTImes - frp, NE Asia Online. You'll probably have to
search a bit for that]
From the article:
-----
Reveasas Technology Corp. has announced the R2S35200NP
three-vavelength compatible laser diode driver for optical pickup
use in optical disk drives.
The driver offers what is claimed to be the industry's first
single-chip implemenation of three laser diode drivers for
Blu-rady disk (BD) or HD-DVD use, DVD use, and CD use. According
to the company the mounting area has been reduced by approximately
15% compared with a conventional multiple package configuration.
With DVD, the driver also supports DVD-RAM.
.....
The package uses is a 32-pin OFN package (5 x 6 mm) featuring
efficient heat dissipaton.
-----
And if you can handle the stepping/spacing for the HD formats, then
reading the DVD and CD format spacing should be very easy.
But there is lot more to building a multi-purpose unit than just
the physical drive and the pickups. I suspect a large part of the
costs will be licensing for the differing formats.
Bill
--
Bill Vermillion - bv @ wjv . com
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