RE: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-08 Thread Howard Chu


I asked Sony this exact question, several months ago. Got no response. It
may
be that they want to go this direction, but aren't talking about it yet. It
amazes me that it would take them so long to release such a product.

  -- Howard Chu
  Chief Architect, Symas Corp.   Director, Highland Sun
  http://www.symas.com   http://highlandsun.com/hyc

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RE: MD: MD-Data discs

2001-04-08 Thread Howard Chu


> Date: Sat, 7 Apr 2001 15:51:34 +1000
> From: "Stephen Dampf" <[EMAIL PROTECTED]>
> Hey all, I thought MD's could only hold 100mbs or so of data yet
> now this MD Camcorder etc implies that MD "data" discs can hold 650mbs.
Can someone
> clarify this for me?

> Date: Fri, 6 Apr 2001 13:11:58 -0500
> From: "Zach Prichard" <[EMAIL PROTECTED]>
> it says MD Data2 discs so I'm guessing that they're just usin'
> some sort of new compression

> Date: Sat, 7 Apr 2001 18:33:39 -0400
> From: "." <[EMAIL PROTECTED]>
> It would have to be more than that. It still holds five times as
> much actual data than the audio MD. I think they're also doing work at the
actual
> read/write level with putting sectors closer together and such. Different
> lasers maybe, different disc materials. And improved compression
> as well I'm sure.
>
> Anyone have any links for technical information on them? It would
> be neat to have some concrete idea how it works.

This Sony page http://www.sel.sony.com/SEL/service/mdcamcorder.shtml#s4
mentions that
the format has the same specs as DVD. This means: smaller pits, narrower
tracks,
and a shorter wavelength laser. Compression has nothing to do with it.
It also notes the data transfer rate as 9.4Mbps, or just around 1MByte/sec.
It's
unclear to me whether this is the actual limit of the drive's speed, or if
this
speed is due to the camera's 10Mbps ethernet interface. What is clear,
though, is
that MD-DATA2 (which Sony is now calling MD-VIEW) is now comparable in speed
to
some older hard drives. Certainly fast enough to keep my PCMCIA Adaptec SCSI
card
busy.

Also note that the camcorder uses original ATRAC, not ATRAC3. There are some
nice
ideas in this thing but there are also some very confusing things here. You
would
think that a flagship product like this would have the absolute best
technology
they could throw at it: ATRAC3, Firewire. Oh well.

  -- Howard Chu
  Chief Architect, Symas Corp.   Director, Highland Sun
  http://www.symas.com   http://highlandsun.com/hyc  >

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Re: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-07 Thread Taky Cheung


MO Disc (Magneto-Optical Disc) is a sibling of MD. I've been using MO for
years. The access time is fast and data stored is reliable. I have an 1GB
Internal Jaz drive before. IT failed for every two weeks. Everytime I took
it to the service center, it will be replaced with a new one or refurbuished
one. After 6 times (7 drives all together), they all failed to operate with
2 weeks. The service center guys recognized me too. Finally I gave up and
bought an MO drive.

You can check out 640MB (SCSI or ATAPI) MO drive  in EBay. They costs around
$60 to $80. I bought one a brand new one from a seller (instead of thru
Auction) for $80.

If you need fast and reliable removable drive, MO is a good choice. MO is
very popular in most asia countries.


Taky Cheung
  http://hottaky.com
  [EMAIL PROTECTED]


- Original Message -
From: "Chad Gombosi" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, April 08, 2001 12:14 AM
Subject: Re: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?


>
> If Sony improved the disc access time for MD Data so that it is
> >comparable to a hard disk, they could end up with a product that
overtakes
> >Iomega's low-end removeable data storage solutions easily.
>
> Yeah but do you know what you are asking here? MD is opti-magnetic which
> means there are two heads instead of one banging around in there and one
of
> them is too fragile to be zipping back and forth as fast as a hard drive
> head does (too fast to even see) This is why you don't see CD ROMS as fast
> as HDs.
>
> Hard disks a build with non-removable platters to very high tolerences and
> tightly sealed in alluminun chasis. They are also power hogs, and they are
> magnetic read/write. That is why they are so fast.
>
> To modify MD to the point where it was as fast as even the slowest HD on
the
> market today would requite that MD be modified to the point where it isn't
> even recognizable as MD anymore, and it sure wouldn't be cheap.
>


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RE: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-07 Thread Chad Gombosi


> > "iomega makes good products"? have you ever heard of the click of death?
> >
>
>No.


Really? Wow. I thought everyone would have experienced this crap by now. 
Basicly you put a Zip disk (usually in another machine than the one you 
normally use it in) and instead of it reading, it just keeps resetting the 
drive mech over and over until it tells you the disk is no good, which at 
this point it isn't because the drive has destroyed all the data on it.

This happnen ALL THE TIME. Usually my Zip disks never leave my house so I 
don't see it happen with my IDE Zip drive, but I've seen it happen with all 
kinds of Zip drives from old parallel externals, to the ones that ship in 
brand new G4s.

If you visit a univeristy computer lab with a few hundered machines in it 
you will hear it every few minutes.


Chad Gombosi
Member SCP www.scponline.net
Chad's Game Music Page www.chadsgamemusic.com
MP3.com page: www.mp3.com/signofzeta

"Let me explain a couple of things. Time is short. That's the
first thing. For the weasel, Time is a weasel. For the hero,
Time is heroic. For the whore, Time is just another trick.
If you're gentle, your Time is gentle. If you're in a hurry,
Time flies. Time is a servant, if you are its master. Time
is your god, if you are its dog. We are the creators of Time,
the victims of Time, and the killers of Time. Time is timeless.
That's the second thing. You are the clock, Cassiel."

Emit - Far Away So Close

_
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Re: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-07 Thread Chad Gombosi


If Sony improved the disc access time for MD Data so that it is
>comparable to a hard disk, they could end up with a product that overtakes
>Iomega's low-end removeable data storage solutions easily.

Yeah but do you know what you are asking here? MD is opti-magnetic which 
means there are two heads instead of one banging around in there and one of 
them is too fragile to be zipping back and forth as fast as a hard drive 
head does (too fast to even see) This is why you don't see CD ROMS as fast 
as HDs.

Hard disks a build with non-removable platters to very high tolerences and 
tightly sealed in alluminun chasis. They are also power hogs, and they are 
magnetic read/write. That is why they are so fast.

To modify MD to the point where it was as fast as even the slowest HD on the 
market today would requite that MD be modified to the point where it isn't 
even recognizable as MD anymore, and it sure wouldn't be cheap.





Chad Gombosi
Member SCP www.scponline.net
Chad's Game Music Page www.chadsgamemusic.com
MP3.com page: www.mp3.com/signofzeta

"Let me explain a couple of things. Time is short. That's the
first thing. For the weasel, Time is a weasel. For the hero,
Time is heroic. For the whore, Time is just another trick.
If you're gentle, your Time is gentle. If you're in a hurry,
Time flies. Time is a servant, if you are its master. Time
is your god, if you are its dog. We are the creators of Time,
the victims of Time, and the killers of Time. Time is timeless.
That's the second thing. You are the clock, Cassiel."

Emit - Far Away So Close

_
Get your FREE download of MSN Explorer at http://explorer.msn.com

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Re: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-07 Thread Robert J. Lynn Jr.


> > "iomega makes good products"? have you ever heard of the click of death?
> >
>
> No.
It's a problem in ZIP Drives where the head would get lodged inthe ZIP disc,
and the "click" noize the head armature made as it loaded and unloaded from
the ZIP cartridge. It, for the most part, destroyed the ZIP cartridge. In
fact, that ZIP cartridge could "infect" other ZIP drives! For the most part,
Iomega wouldn't help out consumers with it, and they were stuck with lost
data and broken drives.

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RE: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-07 Thread .


> "iomega makes good products"? have you ever heard of the click of death?
> 

No.
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Re: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-07 Thread Matt Wall



  ===
  = NB: Over 50% of this message is QUOTED, please  =
  = be more selective when quoting text =
  ===

"iomega makes good products"? have you ever heard of the click of death?


- Original Message -
From: "." <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, April 07, 2001 5:33 PM
Subject: RE: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?


>
> > Well,
> > I think anyone who buys Iomega products deserves the shafting
> > they get with
> > the inferior products:
> > Here's Iomega's MD competetor:
> > http://www.iomega.com/hipzip/index.html
> > $299, with 40MB (20 minutes of 256kbps MP3) media costing $10.
> > Wow, they are
> > REAL cool! 
>
> I use an iomega 2 gig external jaz drive and it works great. Iomega makes
> good products. You can't expect them to come out with an mp3 player at
> prices much lower than what market forces dictate. If they did that,
people
> might think it's cheap stuff. Although I agree that the hipzip is for
> suckers.
>
> This is the same reason that Sony is selling that MD-video thing for
$2500,
> when most *digital* video cameras cost so much less. I don't expect
data-MD
> to be pushed heavily for at least a couple of years. That camera is pretty
> much a public prototype for now. Memory stick is sony's current strategy.
> It's at the core of their whole cross-product compatible
> computer/audio/still video thing.
>
> Maybe as firewire and consumer-level digital video grows on the PC front,
> this kind of MD-video thing will catch on more. But still, 20 minutes is
not
> much recording time.
>
> -
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RE: MD: MD Data Discs

2001-04-07 Thread .


> it says MD Data2 discs so I'm guessing that they're just usin'
> some sort of
> new compression

It would have to be more than that. It still holds five times as much actual
data than the audio MD. I think they're also doing work at the actual
read/write level with putting sectors closer together and such. Different
lasers maybe, different disc materials. And improved compression as well I'm
sure.

Anyone have any links for technical information on them? It would be neat to
have some concrete idea how it works.

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RE: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-07 Thread .


> Well,
> I think anyone who buys Iomega products deserves the shafting
> they get with
> the inferior products:
> Here's Iomega's MD competetor:
> http://www.iomega.com/hipzip/index.html
> $299, with 40MB (20 minutes of 256kbps MP3) media costing $10.
> Wow, they are
> REAL cool! 

I use an iomega 2 gig external jaz drive and it works great. Iomega makes
good products. You can't expect them to come out with an mp3 player at
prices much lower than what market forces dictate. If they did that, people
might think it's cheap stuff. Although I agree that the hipzip is for
suckers.

This is the same reason that Sony is selling that MD-video thing for $2500,
when most *digital* video cameras cost so much less. I don't expect data-MD
to be pushed heavily for at least a couple of years. That camera is pretty
much a public prototype for now. Memory stick is sony's current strategy.
It's at the core of their whole cross-product compatible
computer/audio/still video thing.

Maybe as firewire and consumer-level digital video grows on the PC front,
this kind of MD-video thing will catch on more. But still, 20 minutes is not
much recording time.

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RE: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-07 Thread .


> Well,
> I think anyone who buys Iomega products deserves the shafting
> they get with
> the inferior products:
> Here's Iomega's MD competetor:
> http://www.iomega.com/hipzip/index.html
> $299, with 40MB (20 minutes of 256kbps MP3) media costing $10.
> Wow, they are
> REAL cool! 

I use an iomega 2 gig external jaz drive and it works great. Iomega makes
good products. You can't expect them to come out with an mp3 player as
prices much lower than what market forces dictate. If they did that, people
might think it's cheap stuff.

This is the same reason that Sony is selling that MD-video thing for $2500,
when most *digital* video cameras cost so much less. I don't expect data-MD
to be pushed heavily for at least a couple of years. That camera is pretty
much a public prototype for at least a couple of years. Memory stick is
sony's current strategy. It's at the core of their whole cross-product
compatible computer/audio/still video thing.

Maybe as firewire and consumer-level digital video grows on the PC front,
this kind of MD-video thing will catch on more.

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Re: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?

2001-04-07 Thread Robert J. Lynn Jr.



  ===
  = NB: Over 50% of this message is QUOTED, please  =
  = be more selective when quoting text =
  ===

Well,
I think anyone who buys Iomega products deserves the shafting they get with
the inferior products:
Here's Iomega's MD competetor:
http://www.iomega.com/hipzip/index.html
$299, with 40MB (20 minutes of 256kbps MP3) media costing $10. Wow, they are
REAL cool! 
-Rob
- Original Message -
From: "Simon Mackay" <[EMAIL PROTECTED]>
To: "MiniDisc Mailing List (E-mail)" <[EMAIL PROTECTED]>
Sent: Saturday, April 07, 2001 8:57 AM
Subject: MD: MD Data 2 - why can't it be marketed as a "Zip killer"?


>
> Hi everyone!
>
> I have read about the MD Discam on the Sony Web site and it only can hold
up
> to 20 minutes worth of video on one MD Data2 disc which can hold 640 Mb of
> data. If Sony improved the disc access time for MD Data so that it is
> comparable to a hard disk, they could end up with a product that overtakes
> Iomega's low-end removeable data storage solutions easily.
>
> The orginal MD Data hardware was known to be as slow as a floppy, require
a
> SCSI interface which wasn't common on PCs at the time of its release; and
> was very expensive. Iomega stole the thunder out of this format because
its
> portable Zip drive had higher-speed access, worked with a parallel-port
> interface and was sold in a price-subsidised manner where there were cheap
> drives and expensive media.
>
> Now the landscape for MD Data has changed significantly. Most computers
made
> since 1997 have a USB port on them for connection of removeable media
> devices and similar peripherals and Firewire is now considered a valid
> option for a ultra-high-speed access prot for removeable media hardware.
If
> a manufacturer designs a USB peripheral such as a removeable-media drive
to
> consume a small amount of power, they can have the device draw power from
> the host computer. The speed of access and data throughput can be improved
> by use of higher-than-normal spindle speeds and spinning
> constant-linear-velocity media like CD-ROM and MD Data at a fixed spindle
> speed unless "real-time" data like sound or video is being moved.
>
> Also, an MD Data 2 disc can carry over 1440 1.3 Megapixel JPEG digital
> camera images held at a low compression ratio, or 320 2.1 Megapixel images
> held at a low compression rate. This format will be a boon to the digital
> camera user, who has to mess around with buying lots of expensive memory
> cards to use their digital camera at its best potential or use
> low-resolution shooting modes which don't bring out the best in today's
> digital cameras so they can cover themselves for a long photography
session.
> A good peripheral that makes use of MD Data 2 would be an image-transfer
> unit which copies images held on a memory card onto an MD Data 2 disc.
This
> is in a similar vein to what Iomega are selling with their PocketZip drive
> for digital cameras and their Fotoshiw Image Viewer which copies digital
> images from Compact Flash or SmartMedia cards to Zip disks.
>
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Re: MD: MD Data Discs

2001-04-06 Thread Zach Prichard


it says MD Data2 discs so I'm guessing that they're just usin' some sort of
new compression
z
- Original Message -
From: "Stephen Dampf" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, April 07, 2001 12:51 AM
Subject: MD: MD Data Discs


>
> Hey all, I thought MD's could only hold 100mbs or so of data yet now this
MD
> Camcorder etc implies that MD "data" discs can hold 650mbs. Can someone
> clarify this for me?
>
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Re: MD: MD Data

2000-04-03 Thread Chris Eddington



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  ===

Where can I get one? ( or get complete info on existing models that I
could buy used).

Chris


[EMAIL PROTECTED] wrote:

> Yes
> I think there are a few people on this list
> with mdh-10's
>
> is that all you wanted to know???
>
> -Jeffrey
>
> --
> The day MS makes something that doesn't suck
> will be the day they start making vacuum cleaners.
>
> On Mon, 3 Apr 2000, Edward Foster wrote:
>
> >
> > New question. Does anybody have any Sony MD Data device
> > (MDH-10, MDM111, etc..)? Please let me know.
> > Thanks,
> > eD
> > -
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> >
>
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Re: MD: MD Data

2000-04-03 Thread Edward Foster


I'm looking for NT drivers thats all. I thought that maybe the people 
who own them might have some. Thanks
eD
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Re: MD: MD Data

2000-04-03 Thread jds


Yes
I think there are a few people on this list
with mdh-10's 

is that all you wanted to know???

-Jeffrey

--
The day MS makes something that doesn't suck
will be the day they start making vacuum cleaners. 

On Mon, 3 Apr 2000, Edward Foster wrote:

> 
> New question. Does anybody have any Sony MD Data device 
> (MDH-10, MDM111, etc..)? Please let me know. 
> Thanks,
> eD
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Re: MD: MD data conversion

1999-09-30 Thread Ralph Smeets


[EMAIL PROTECTED] wrote:

> Yes they do, but that doesn't mean achieving a higher data rate isn;t possible
> using combinations of tones an ATRAC algorithm wouldn't trash. If you
> calibratedthe volume, you could probably come up with a system that not only
> combined tones but also changes in volume to represent data bits. Phase
> shifting techniques are also not removed by ATRAC. There would be some quite
> sophisticated electronics to encode and decode the signal, but if you use a
> 22kHz tone and only represent 1 bit through phase shifting, that's still
> 22'000bps. If you applied some of the techniques modems use to this, I don't
> see why you should be able to achieve at 4 times that.

Modems only have 4kHz of bandwidth available!

MD has at least 20kHz of bandwidth available.

But given that the compression factor of ATRAC equals 5, your overal bandwidth
of ATRAC is 4kHz. Ie, faster than modem speeds is not really possible!

Cheers,
Ralph -> To much shift-keying-amplitude-keying and frequency keying will
   result in ATRAC removing signals!

-- 
===
Ralph SmeetsFunctional Verification Centre Of Competence -  CMG
Voice:  (+33) (0)4 76 58 44 46   STMicroelectronics
Fax:(+33) (0)4 76 58 40 11   5, chem de la Dhuy
Mobile: (+33) (0)6 82 66 62 70 38240 MEYLAN
E-Mail: [EMAIL PROTECTED]  FRANCE
===
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   something happened that unleashed the powers of our imagination: 
   We learned to talk."
-- Stephen Hawking, later used by Pink Floyd --
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Re: MD: MD data conversion

1999-09-29 Thread Magic


PrinceGaz wrote:

> Hey, the ZX Spectrum (the finest 8-bit machine made) stored data
> using monaural audio.  It averaged about 1500bps, not exactly
> super fast, but faster than the ZX81 which was only about 300bps.

*cough* Excuse me! Best 8 bit machine? No way! Not as far as Data storage was
concerned, it was a real slug in that area.

BBC Micro and Acorn Electron 2400bps
BBC Master series 2400bps or 4800bps with stereo adapter

> I guess given MD audio is rather better than telephone quality,
> it should be able to store data with all the phase-shift stuff used by
> a 56K modem.  Of course perhaps these v90 modems use signals
> the ATRAC algorithm would trash?

Yes they do, but that doesn't mean achieving a higher data rate isn;t possible
using combinations of tones an ATRAC algorithm wouldn't trash. If you
calibratedthe volume, you could probably come up with a system that not only
combined tones but also changes in volume to represent data bits. Phase
shifting techniques are also not removed by ATRAC. There would be some quite
sophisticated electronics to encode and decode the signal, but if you use a
22kHz tone and only represent 1 bit through phase shifting, that's still
22'000bps. If you applied some of the techniques modems use to this, I don't
see why you should be able to achieve at 4 times that.

Of course, when it comes to selecting individual files and obtaining directory
listing of what is on the disk, then you might run into problems.


--
Magic

Location : Portsmouth, England, UK
Homepage : http://www.mattnet.freeserve.co.uk
EMail : mailto:[EMAIL PROTECTED]




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Re: MD: MD data conversion Zip Drive Click of Death?

1999-09-28 Thread Remko van der Vossen


I'm on my 3rd zip drive (not problems with the drive)
sold the first one to a friend (SCSI ZIP 100)
Still using the second and third one
one is a 100 the other is a new 250

never had a problem with any of them..
the one I sold my buddy is still using...

The reports I read about the click of death, say that it was fixed
within the first year of the drives production...


Yep, It's only in certain drives, and if you buy an Iomage zip-drive, then
they'll suply a new disk and/or drive whenever you encounter CoD, even if
you're 5 years out of warenty, doesn't matter. I've got a 100Mb SCSI Zip,
and 12 disks, haven't had a single problem with any of 'm.

Bye, Remko van der Vossen, [EMAIL PROTECTED]
The Black Angel, [EMAIL PROTECTED] ICQ: 48056779
EDA and owner of [EMAIL PROTECTED]
fan of Jewel, The X-Files, Chris Carter, Mac Gyver,
BtVS, Jane Jensen's Gabriel Knight

Pretty; "There is a pretty girl on the Face of this magazine
And all I can see are my dirty hands turning the page" Jewel

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Re: MD: MD data conversion Zip Drive Click of Death?

1999-09-28 Thread S J Gardner


OT i know, but.. :)

I've had a parallel port zip drive for just over a year now - it's used a
couple of
times a week at uni, transported about a fair bit (in a proper case, but
that's not a lot of protection), and the disks are often carried about
uncased.

I've not had a single problem, except that the thing is so damn slow and
uses up all the CPU while it transfers :)  I stopped using it for backups
when I bought a CDR drive. (buy an external SCSI or internal IDE zip drive
rather than the PP one)

A couple of friends have external PP drives too, all without problems. It
seems to be something that affected the really early drives.

Simon

On Sun, 26 Sep 1999, J. Coon wrote:

> 
> Magic wrote:
> > 
> > no. I currently use a parallel port 100Mb ZIP drive which has a data
> > throughput of 380kbytes/sec sustained. As it costs only £70 and offers much
> > better facilities being a dedicated drive, I
> Has anyone experianced the "Click of death" Syndrom on ZIP drives?  I
> have one but haven't used it very much.  I friend ran into this "Click
> of Death" and lost a couple of his archives. Bummer.  
> 
> --
> Jim Coon
> Not just another pretty mandolin picker
> mailto:[EMAIL PROTECTED]
> If Gibson made cars, would they sound so sweet?
> 
> 
> My first web page
> 
> http://www.tir.com/~liteways/
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Re: MD: MD data conversion

1999-09-27 Thread PrinceGaz


Hey, the ZX Spectrum (the finest 8-bit machine made) stored data
using monaural audio.  It averaged about 1500bps, not exactly
super fast, but faster than the ZX81 which was only about 300bps.

I guess given MD audio is rather better than telephone quality,
it should be able to store data with all the phase-shift stuff used by
a 56K modem.  Of course perhaps these v90 modems use signals
the ATRAC algorithm would trash?

Cheers,
PrinceGaz -- "if it harms none, do what you will"

Email: [EMAIL PROTECTED]
Website: http://website.lineone.net/~princegaz/
ICQ: 36892193

- Original Message -
From: Stainless Steel Rat <[EMAIL PROTECTED]>
To: MD-L <[EMAIL PROTECTED]>
Sent: 27 September 1999 14:55
Subject: Re: MD: MD data conversion


>
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA1
>
> * Ralph Smeets <[EMAIL PROTECTED]>  on Mon, 27 Sep 1999
> | 2) I think it would be possible to store data on a audio disc using the
> |analog interface.. Use two frequencies, one for '0' and one for '1'.
>
> You do not remember the days when personal computers used monaural audio
> cassette recorders for data storage, do you. :)
>
> Then again, a modem -- MOdulator-DEModulator works the same way, using
> analog tones to represent the bit stream.
> -BEGIN PGP SIGNATURE-
> Version: GnuPG v1.0.0 (GNU/Linux)
> Comment: For info see http://www.gnupg.org
>
> iD8DBQE373dkgl+vIlSVSNkRApzYAJ42OGdEBPROksNsuahsuuv0CSnljwCgs1qw
> hb9QyhbsPuvGImYN9OeABIQ=
> =J9Bx
> -END PGP SIGNATURE-
>
> --
> Rat <[EMAIL PROTECTED]>\ Do not taunt Happy Fun Ball.
> Minion of Nathan - Nathan says Hi! \
> PGP Key: at a key server near you!  \
> -
> To stop getting this list send a message containing just the word
> "unsubscribe" to [EMAIL PROTECTED]
>


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Re: MD: MD data conversion Zip Drive Click of Death?

1999-09-27 Thread Magic


"J. Coon" wrote:

> Has anyone experianced the "Click of death" Syndrom on ZIP drives?  I
> have one but haven't used it very much.  I friend ran into this "Click
> of Death" and lost a couple of his archives. Bummer.

Wrong forum to discuss this issue, but I've been a ZIP drive user since they were
first released. I have an external Parallel Port drive which has been very well
travelled in backpacks, suitcases and even carrier bags. The only problems I had
with it were when I trieds to run a scanner and zip drive off the same parallel
port - this can result in a corrupted disk. The click of death seemed to be
caused by early versions of SmartDrive in DOS6.2 if memory serves

--
Magic

Location : Portsmouth, England, UK
Homepage : http://www.mattnet.freeserve.co.uk
EMail : mailto:[EMAIL PROTECTED]


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Re: MD: MD data conversion Zip Drive Click of Death?

1999-09-27 Thread Jeffrey D. Scorsone


I'm not sure why the output wasn't clearsigned, but here is the the orginal
message:

I'm on my 3rd zip drive (not problems with the drive)
sold the first one to a friend (SCSI ZIP 100)
Still using the second and third one
one is a 100 the other is a new 250

never had a problem with any of them..
the one I sold my buddy is still using...

The reports I read about the click of death, say that it was fixed
within the first year of the drives production...

-Jeffrey

-- 
I am not a folder!

On Sun, 26 Sep 1999, J. Coon wrote:

> 
> Magic wrote:
> > 
> > no. I currently use a parallel port 100Mb ZIP drive which has a data
> > throughput of 380kbytes/sec sustained. As it costs only £70 and offers much
> > better facilities being a dedicated drive, I
> Has anyone experianced the "Click of death" Syndrom on ZIP drives?  I
> have one but haven't used it very much.  I friend ran into this "Click
> of Death" and lost a couple of his archives. Bummer.  
> 
> --
> Jim Coon
> Not just another pretty mandolin picker
> mailto:[EMAIL PROTECTED]
> If Gibson made cars, would they sound so sweet?
> 
> 
> My first web page
> 
> http://www.tir.com/~liteways/
> -
> To stop getting this list send a message containing just the word
> "unsubscribe" to [EMAIL PROTECTED]
> 


-- 
I am not a folder!

On Mon, 27 Sep 1999, Ralph Smeets wrote:

> 
> [EMAIL PROTECTED] wrote:
> > 
> > -BEGIN PGP MESSAGE-
> > Version: PGP Personal Edition 5.0
> > MessageID: CaaHP/mHZnthdcqCtBY67uKlwAcg52lX
> > 
> > owGlVGtsFUUU9gpI3JBC0hCtEDxUDSD3RUFKm9oildgLFioXAzUozO7OvTt2d+Yy
[snip]
> > -END PGP MESSAGE-
> 
> Hmm,
> 
> I gues somebody who stored his mail on minidisc and send it to MD-L?
> 
> Cheers
> lpRah -< errro radeing divre :C

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Re: MD: MD data conversion

1999-09-27 Thread laerm


On Mon, 27 Sep 1999, Ralph Smeets wrote:

> > You do not remember the days when personal computers used monaural audio
> > cassette recorders for data storage, do you. :)
> > 
> > Then again, a modem -- MOdulator-DEModulator works the same way, using
> > analog tones to represent the bit stream.
> 
> Well, I know that my data-recorder for my MSX computer used 1200 Hz
> for '0' and 2400 Hz for '1'. All those 'turbo' charging programs would
> somehow double, triple, quadrople etc. the frequency in order to gain
> a higher speed.
> 
> Cheers,
> Ralph -> Pip, crhhh, piep piep piep pip pip pip piep piep pip pip
> piep chhhr... (*&)(_)(@#$&*( tape broken.

yeah, i remember my TI99 and playing montezuma's revenge on it...ahh, the
memories. fire up the 99, hit play on the tape drive to load the game, go
watch a half-hour sitcom, come back, wait for the game to finish loading
for a minute or two, then play. fun. ;)

   *
  
a disturbance in a system.
laerm. @voicenet.com  ##:#
 calm down my heart/don't beat so fast/don't be afraid
icq:5562209just once in a lifetime

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Re: MD: MD data conversion

1999-09-27 Thread Ralph Smeets


[EMAIL PROTECTED] wrote:
> 
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA1
> 
> * Ralph Smeets <[EMAIL PROTECTED]>  on Mon, 27 Sep 1999
> | 2) I think it would be possible to store data on a audio disc using the
> |analog interface.. Use two frequencies, one for '0' and one for '1'.
> 
> You do not remember the days when personal computers used monaural audio
> cassette recorders for data storage, do you. :)
> 
> Then again, a modem -- MOdulator-DEModulator works the same way, using
> analog tones to represent the bit stream.

Well, I know that my data-recorder for my MSX computer used 1200 Hz for '0' and
2400 Hz for '1'. All those 'turbo' charging programs would somehow double,
triple, quadrople etc. the frequency in order to gain a higher speed.

Cheers,
Ralph -> Pip, crhhh, piep piep piep pip pip pip piep piep pip pip piep
chhhr... (*&)(_)(@#$&*( tape broken.

-- 
===
Ralph SmeetsFunctional Verification Centre Of Competence -  CMG
Voice:  (+33) (0)4 76 58 44 46   STMicroelectronics
Fax:(+33) (0)4 76 58 40 11   5, chem de la Dhuy
Mobile: (+33) (0)6 82 66 62 70 38240 MEYLAN
E-Mail: [EMAIL PROTECTED]  FRANCE
===
"For many years, mankind lived just like the animals. And then some-
thing happened that unleashed the powers of our imagination: We learned
to talk."
-- Stephen Hawking, later used by Pink Floyd --
===
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Re: MD: MD data conversion

1999-09-27 Thread Stainless Steel Rat


-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

As others have said, it is probably not such a great idea.  The ZIP disk
has been mentioned.  There are also 1GB and 2GB Jaz removable cartridge
hard drives available.  Sony has a new 640MB capacity 3.5" diskette drive
intended to compete with 3M's 140MB SuperDisk.
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.0.0 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE373gEgl+vIlSVSNkRAmG0AJ9dXu6aEHKhNTqi/q3zrLc9bshyKgCeKJR9
mYYDVuawMBXg4x7rpZuuNDs=
=r/qo
-END PGP SIGNATURE-

-- 
Rat <[EMAIL PROTECTED]>\ Ingredients of Happy Fun Ball include an
Minion of Nathan - Nathan says Hi! \ unknown glowing substance which fell to
PGP Key: at a key server near you!  \ Earth, presumably from outer space.
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Re: MD: MD data conversion

1999-09-27 Thread Stainless Steel Rat


-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

* Ralph Smeets <[EMAIL PROTECTED]>  on Mon, 27 Sep 1999
| 2) I think it would be possible to store data on a audio disc using the
|analog interface.. Use two frequencies, one for '0' and one for '1'.

You do not remember the days when personal computers used monaural audio
cassette recorders for data storage, do you. :)

Then again, a modem -- MOdulator-DEModulator works the same way, using
analog tones to represent the bit stream.
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.0.0 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE373dkgl+vIlSVSNkRApzYAJ42OGdEBPROksNsuahsuuv0CSnljwCgs1qw
hb9QyhbsPuvGImYN9OeABIQ=
=J9Bx
-END PGP SIGNATURE-

-- 
Rat <[EMAIL PROTECTED]>\ Do not taunt Happy Fun Ball.
Minion of Nathan - Nathan says Hi! \ 
PGP Key: at a key server near you!  \ 
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Re: MD: MD data conversion Zip Drive Click of Death?

1999-09-27 Thread Stainless Steel Rat


-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

* Ralph Smeets <[EMAIL PROTECTED]>  on Mon, 27 Sep 1999
| I gues somebody who stored his mail on minidisc and send it to MD-L?

Nah.  Just the stupidity of a Reply-To header pointing at a mailing list
making it difficult to send a reply to the originator of a message.  It
just so happens that this one was encrypted.
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.0.0 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE373ZBgl+vIlSVSNkRAkJQAKC85vChZEQD3SH3oX7kxDJ0Omt6rgCaA1hM
llPpBcuSVjjLcSbkSxxR/0A=
=CoxW
-END PGP SIGNATURE-

-- 
Rat <[EMAIL PROTECTED]>\ Do not taunt Happy Fun Ball.
Minion of Nathan - Nathan says Hi! \ 
PGP Key: at a key server near you!  \ 
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Re: MD: MD data conversion Zip Drive Click of Death?

1999-09-27 Thread Ralph Smeets


[EMAIL PROTECTED] wrote:
> 
> -BEGIN PGP MESSAGE-
> Version: PGP Personal Edition 5.0
> MessageID: CaaHP/mHZnthdcqCtBY67uKlwAcg52lX
> 
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> VCTrbw==
> =zkLX
> -END PGP MESSAGE-

Hmm,

I gues somebody who stored his mail on minidisc and send it to MD-L?

Cheers
lpRah -< errro radeing divre :C
-- 
===
Ralph SmeetsFunctional Verification Centre Of Competence -  CMG
Voice:  (+33) (0)4 76 58 44 46   STMicroelectronics
Fax:(+33) (0)4 76 58 40 11   5, chem de la Dhuy
Mobile: (+33) (0)6 82 66 62 70 38240 MEYLAN
E-Mail: [EMAIL PROTECTED]  FRANCE
===
"For many years, mankind lived just like the animals. And then some-
thing happened that unleashed the powers of our imagination: We learned
to talk."
-- Stephen Hawking, later used by Pink Floyd --
===
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Re: MD: MD data conversion

1999-09-27 Thread Ralph Smeets


[EMAIL PROTECTED] wrote:
> 
> currently i am involved in a research project in my computer engineering
> studies to allow a home audio md unit (je510 initially... same process for
> others) to store data and audio on the same disc.. if this conversion was
> patented and fairly cheap, do you all feel there is a market for this?  it
> would use the audio discs and pass data through the serial port at
> 150Kbps.  single speed cd... there is also the possibility of speeding up
> the drive itself... like with using the new quad speed ones sound
> good?

1) Sony already did it... It's called MD-Data. MD-Data uses a slightly
   different disc than MD-Audio. A necessity since storing data on a
   disc requires a diffent TOC structure than storing audio.
   But the unit didn't catch on. It was limited to 150kB/s transfer speed,
   used the expensive SCSI interface and it came to late on the market,
   (around the same time as the inexpensive ZIP-drive!).
2) I think it would be possible to store data on a audio disc using the
   analog interface.. Use two frequencies, one for '0' and one for '1'. Or
   use four frequecies, one for '00', '01', '10' and '11'. You should be
   able to build a device that converts bits into frequencies and store these
   frequencies. But I don't think you'll be able to use the disk-space on
   an MD very efficiently.

Here's an example of a storage algorithm (using harmonics since they:

'' ==  1 kHz
'0001' ==  2 kHz
'0010' ==  3 kHz
'0011' ==  4 kHz
'0100' ==  5 kHz
'0101' ==  6 kHz
'0110' ==  7 kHz
'0111' ==  8 kHz
'1000' ==  9 kHz
'1001' ==  10 kHz
'1010' ==  11 kHz
'1011' ==  12 kHz
'1100' ==  13 kHz
'1101' ==  14 kHz
'1110' ==  15 kHz
'' ==  16 kHz

maximum transfer rate equals 4 bits * 1 kHz == 4kbits/second = 500
bytes/second...

or combining it with a key frequency:

'0' ==  1 kHz
'1' ==  2 kHz
'00010' ==  3 kHz
'00011' ==  4 kHz
'00100' ==  5 kHz
'00101' ==  6 kHz
'00110' ==  7 kHz
'00111' ==  8 kHz
'01000' ==  9 kHz
'01001' ==  10 kHz
'01010' ==  11 kHz
'01011' ==  12 kHz
'01100' ==  13 kHz
'01101' ==  14 kHz
'01110' ==  15 kHz
'0' ==  16 kHz

'1' ==  1 kHz + 17 kHZ
'10001' ==  2 kHz + 17 kHZ
'10010' ==  3 kHz + 17 kHZ
'10011' ==  4 kHz + 17 kHZ
'10100' ==  5 kHz + 17 kHZ
'10101' ==  6 kHz + 17 kHZ
'10110' ==  7 kHz + 17 kHZ
'10111' ==  8 kHz + 17 kHZ
'11000' ==  9 kHz + 17 kHZ
'11001' ==  10 kHz + 17 kHZ
'11010' ==  11 kHz + 17 kHZ
'11011' ==  12 kHz + 17 kHZ
'11100' ==  13 kHz + 17 kHZ
'11101' ==  14 kHz + 17 kHZ
'0' ==  15 kHz + 17 kHZ
'1' ==  16 kHz + 17 kHZ

maximum transfer rate equals 5 bits * 1 kHz == 5kbits/second = 625
bytes/second...

You could use an even better schema, (including 18kHz as another frequecy,
Ie, 1 extra frequency, gives two more bits, ie 7kbits/second = 875
bytes/second..
, include 19 kHz, gives three more bits, ie 8kbits/second == 1 kbytes /second.)

Ie,
it's possible, but I don't think you'll reach higher than modem speeds. And it
will
take quite some DPS power.


I don't really believe that the ATRAC algorithm will destroy the data. Hell,
I bet you could even use the schema above usign two, three or even four
different
amplitudes for your data. This would give you even more bits...

Cheers,
Ralph -> good luck. (I think you need it!)
-- 
===
Ralph SmeetsFunctional Verification Centre Of Competence -  CMG
Voice:  (+33) (0)4 76 58 44 46   STMicroelectronics
Fax:(+33) (0)4 76 58 40 11   5, chem de la Dhuy
Mobile: (+33) (0)6 82 66 62 70 38240 MEYLAN
E-Mail: [EMAIL PROTECTED]  FRANCE
===
"For many years, mankind lived just like the animals. And then some-
thing happened that unleashed the powers of our imagination: We learned
to talk."
-- Stephen Hawking, later used by Pink Floyd --
===
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Re: MD: MD data conversion Zip Drive Click of Death?

1999-09-26 Thread Jeffrey D. Scorsone


-BEGIN PGP MESSAGE-
Version: PGP Personal Edition 5.0
MessageID: CaaHP/mHZnthdcqCtBY67uKlwAcg52lX

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VCTrbw==
=zkLX
-END PGP MESSAGE-

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Re: MD: MD data conversion Zip Drive Click of Death?

1999-09-26 Thread J. Coon


Magic wrote:
> 
> no. I currently use a parallel port 100Mb ZIP drive which has a data
> throughput of 380kbytes/sec sustained. As it costs only £70 and offers much
> better facilities being a dedicated drive, I
Has anyone experianced the "Click of death" Syndrom on ZIP drives?  I
have one but haven't used it very much.  I friend ran into this "Click
of Death" and lost a couple of his archives. Bummer.  

--
Jim Coon
Not just another pretty mandolin picker
mailto:[EMAIL PROTECTED]
If Gibson made cars, would they sound so sweet?


My first web page

http://www.tir.com/~liteways/
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Re: MD: MD data conversion

1999-09-26 Thread Magic


"robert.justice" wrote:

> currently i am involved in a research project in my computer engineering
> studies to allow a home audio md unit (je510 initially... same process for
> others) to store data and audio on the same disc.. if this conversion was
> patented and fairly cheap, do you all feel there is a market for this?

No. The ATRAC system renders tonal coding algorythms virtually useless - you
get better data throughput from a standard mono cassette deck, and they are a
lot cheaper too.

>  it
> would use the audio discs and pass data through the serial port at
> 150Kbps.  single speed cd...

Serial port output at 150kbytes/sec? This I have to see, especially as
computer hardware manufacturers had to resort to using EPP on the parallel
port, and more recently USB to get that kind of throughput..

> there is also the possibility of speeding up
> the drive itself... like with using the new quad speed ones sound
> good?

If it envolves me opening up the 510 and messing around with the innerds then
no. I currently use a parallel port 100Mb ZIP drive which has a data
throughput of 380kbytes/sec sustained. As it costs only £70 and offers much
better facilities being a dedicated drive, I think I'll stick with it. The new
250Mb USB version is much better again, and I think to try and revive an idea
that Sony already tried to do and failed at is probably not very worthwhile.

--
Magic

Location : Portsmouth, England, UK
Homepage : http://www.mattnet.freeserve.co.uk
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Re: MD: MD data conversion

1999-09-26 Thread Remko van der Vossen


>currently i am involved in a research project in my computer engineering
>studies to allow a home audio md unit (je510 initially... same process for
>others) to store data and audio on the same disc.. if this conversion was
>patented and fairly cheap, do you all feel there is a market for this?  it
>would use the audio discs and pass data through the serial port at
>150Kbps.  single speed cd... there is also the possibility of speeding up
>the drive itself... like with using the new quad speed ones sound
>good?


I don't think it would, there are already 250 MB ZIP disks, which are fearly
cheap, and fast, and they're bigger in MB's than MD's too. I myself have a
100 MB ZIP Drive, and it works great, a lot of my friends have one too, and
at school they've also got them. and it work's really fast 600 Kbyte to 1
Mbyte per second. the 250 is even faster.

BTW, the serial port of a computer has a maximum speed of 115 Kbit per
second, which comes to 11.5 Kbyte per second, so that won't really work,
you'd have to create a ISA or PCI card for it to work at higher speeds.

Bye, Remko van der Vossen, [EMAIL PROTECTED]
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