Give us a chance!
Perhaps, if you have ever dealt with CD- or DVD-ROM
drives, you noticed that in their trays there is a round hollow
80 mm in diameter. It is a place for a forgotten format of 80 mm
CDs. The fact that it has not disappeared from a tray says that
80 mm discs is, yet, ISO-standard.
What is this 80 mm CD? Let's check its characteristics.
In the table you can see data on 120 mm 650 MBytes CD, for comparison.
| Diameter, mm |
80
|
80
|
120
|
| Playback time, min |
18
|
21
|
74
|
| Audio, MBytes |
182
|
212
|
474
|
| CD-ROM Mode 1, MBytes |
158
|
185
|
650
|
| CD-ROM Mode 2, MBytes |
180
|
211
|
742
|
| CD-i & XA Form 1, MBytes |
158
|
185
|
650
|
| CD-i & XA Form 2, MBytes |
180
|
209
|
738
|
I should note that 80 mm discs were developing
little by little and thus reached a CD-R/RW stage. By the way, I
have looked through sites of CD-R manufacturers and only on the
Ritec's site I have found information on similar products, with
record speed up to 12X, at that. However, I have learnt that you
can order any variant of 80 mm CD-R/RW to the majority of companies.
This type of CD has its own little brothers. This
is a family of so called "business card CD". In fact they are usual
discs with two sides cut, so that they look like business cards.
Their capacity varies from 20 to 60 MBytes depending of how much
was cut off.
So, what can we see: 180 MBytes against 650 MBytes.
The result is of course clear for everybody. Although 180 MBytes
was a very good standard at the moment of its developing, multimedia
technologies have made new requirements for data storage volumes.
It resulted in the fact that 80 mm discs stepped aside from its
elder brother - 120 mm CDs. The only thing that 80 mm discs can
compete with is their size. But volume of data stored has won over
the size.
But now is coming an epoch of miniaturization and
hyperintegration. And although 180 MBytes look not very attractive
today, 80 mm discs still have a chance for renascence. Here matters
a lot their compactness and price which is directly depend on the
size (it concerns CD-R/RW to more extent). So, let's see what sphere
80 mm discs can occupy.
MP3-players
Digital music format - MP3 and formats' family
AAC are widespread and very popular all around the world. Initially,
MP3-players used flash-memory as a main data carrier. But now you
can see a lot of CD-players which play audio discs in MP3 format,
and the more advanced models have also other formats. For players
with flash-memory it's difficult to fight against the new-comers:
64-128 MBytes against 650 MBytes, and as for storage cost, you know
that CD is a leader for a long time already. But a size of MP3-players
based on a flash-memory is markedly less than that of the MP3/CD
player: I can hardly call a CD compact. Therefore, you may see here
80 mm discs. 180 MBytes is quite good for storing MP3 and AAC music.
Cost of the data storage will remain at the level of usual CD (maybe
just a little higher), but compared with memory it is still much
cheaper. And the first thing is compactness! If one would work out
a player which would use only 80 mm CD, its dimensions would more
than satisfactory. Moreover: it will be a serious challenge for
MD-players. In fact, a 80 mm CD-MP3 player would inherit all possibilities
of 120 mm CD-MP3 player, but it will be better as far as portability
is concerned.
China manufacturers have already introduced their
variants of MP3-players for 80mm CD. Below you can see several models
and their characteristics.
AVC Technology Limited
CD-268 Multi-Codec Optical DMP Player with 8cm CD Recordable Disk
- Optical DMP CD MP3 player with multi-codec
- Supported formats: CD, MP3, WMA, AAC
- 80 mm CD-R and CD-RW reading support
- Anti-shock DSP up to 20 seconds
- Graphics LCD with a possibility of viewing song names
- Output : 7 mW + 7 mW
- Bass boost
- EQ : Pop, Jazz, Classic, Hall
- Headphones
- Adapter 4.5 VDC rechargeable
- 2 x AA batteries
K-Well Enterprise Co Ltd
KW-MP3(C) 8cm Mini Disc Portable MP3 / CD Player
- Dimensions (L x H x W): 980 x 950 x 180mm
- Weight: 157 g (drive only)
- Distortion rate: <0.1%
- AudioCD and MP3/CD playback
- Supported formats: audio wave and MP3 codec
- Disc diameter: 80 mm
- Record format: ISO 9660 or Juliet
- Supported disc types: CD-DA, CD-R, CD-RW
- Disc capacity: 180 MBytes
- Max number of tracks: 50
- Max audio disc capacity: 21 minutes
- Graphics display 19 (W) x 8 (H) mm, showing track number
GIGASTORAGE CORPORATION TAIWAN
GS-R() Mini MP3 CD player
- Supported disc types (reading): MP3, Audio, CD-I, CDDA
- MPEG/ Data read available by computer
- Stereo headphones
- Analog volume control
- Anti shock 24 seconds (for MP3)
- Read speed: 1X, 2X, 4X (CLV)
- Frequency range: 20Hz~20kHz
- Dimensions (D*W*H), mm: 118 x 87 x28
- Weight (Net): 150 g
Digital photo cameras
Digital photo cameras is a field where flash-memory
rules without limitations. But many companies were seeking for a
long time for an alternative for this quite expensive data carrier:
they considered variants on FDD, ZIP, Click! and microHDD from IBM.
In principle, alternative devices must have provided
not only cheap but also convenient way of handing digital photo
cameras. A shooting process is the same: shots are inserted in the
camera memory, and when it's filled up, you have to move shots to
a computer, or to replace a card. But the cards are not cheap, and
a computer is not always near. And now let's take a 80 mm CD-R as
a data storage device. A camera won't be so portable, but you will
get a possibility to make as many shots as you want using the max
resolution. Besides, you can use 80 mm CDs right in a computer and
to get an access to shot immediately. Again - low price of the discs.
It's impossible to say exactly, if 80 mm CD-R is
used in this camera or SONY decided to use their similar format
CD, but I saw notes "compatible with SONY Mavica" on some
sites of 80 mm CD-R manufactures.
Digital camcorder
Video shooting in digital format is widely used
nowadays, even in amateur cameras. But data carriers used for record
have remained from analog epoch. SONY, again, has given out an alternative
(a camcorder with recording on MD), as well as HITACHI (camcorder
with recording on 80 mm DVD-RAM disc). It's still early to speak
about a cheaper record technique, as well as about convenience.
It's possible, though, that the HITACHI camcorder will allow to
use 80 mm DVD-RAM in DVD-ROM devices, but it doesn't concern MD.
Here, a 80 mm CD-R can become a severe rival for
video cassettes. A shot film is to be taken into a computer for
processing, for what you have to purchase at least the simplest
FireWire board. In case of usage of 80 mm CD-R/RW, you can look
though the video without re-recording and conversion. Of course,
you won't be able to get video in MPEG2, as it is done in Hitachi
and Sony cameras, but you can easily make a record in MPEG4, especially
considering that hardware coders/decoders for this format exist.
Approximately, you can record on a 80 mm CD-R/RW around 45 min video.
A cost of recording on 80 mm CD-R/RW discs is close to recording
on cassettes. And if you add a possibility to record information
to your camera (say, USB or FireWire-interface), than you will get
a good portable combine :)
PDA and others
PDA, mini computers and other very intelligent
digital helpers occupy the market of portable digital devices. At
the same time, they are interwined with such communication means
as cellular phones and GPS-devices. Maybe, by the end of this year
all these devices will pour into one personal helper-communicator
with a wide range of possibilities.
Again, the base is a flash-memory. But as I have
said it is very expensive. Here 80 mm CDs can be also used. First,
if we add a possibility of reading information from already recorded
discs, it will allow such devices to carry definite data bases,
for example, detailed cards for GPS devices or lots of necessary
applied software. Secondly, if we mount not just a CD-ROM drive
for 80 mm discs in PDA but a CD-R/RW device, we will get a very
convenient device for data transmission. In the last case, though,
you will need batteries with higher capacity. But the latest technologies
in the CD-R/RW field allows to reduce power consumption tremendously
while recording.
And that's all. I can see that 80 mm CD won't die
at once, but how long time they are going to live more time will
show.