What is firewire?

[mgred]

Can somebody give me an overview on what firewire is and how does it differ
from USB? I have a friend who wants to use his video camera as a web cam
and said he wants to use firewire. How would someone do this?

Kevin

[Mikhaël]

Hello Kevin,

Firewire (Apple name) = Ilink (Sony name) = IEEE 1394 (Technical name)
It's the connection you found on every DV camera

Speed of native Firewire is 400 Mbps/s (exist in 800 mbps version)
Faster to USB 1.0 but equivalent to USB 2.0

It can be used on PC for :
Connecting DV camera
Connecting Industrial 1394 camera
Connecting Firewire Hard Drive
Connecting Firewire webcam
....

See http://www.1394ta.org/About/products/consumer_products.html

FireWire vs. USB; Apple and Intel Play Hardball :
http://www.pcstats.com/articleview.cfm?articleID=1104


But I sugest your friend to buy an USB webcam because I' think it's cheaper
and easier ...

Mike (France)
http://www.webcam-montblanc.com
http://www.webcam-chambery.com



"mgred" > a écrit dans le message de
...
> Can somebody give me an overview on what firewire is and how does it
differ
> from USB? I have a friend who wants to use his video camera as a web cam
> and said he wants to use firewire. How would someone do this?
>
> Kevin
>
>

[Benoît Morrissette]

On Tue, 24 Jun 2003 14:18:53 +0200, "Mikhaël" > wrote:

>
>Mike (France)
>http://www.webcam-montblanc.com
>http://www.webcam-chambery.com
>
>
Red letters over the dark wood background are VERY difficult to read for
colorblind people, about 10% of the population...

Do you know the webmaster? Can you do something about that?

Thanks!

[evolve]

"Noël" > wrote in message
...

> One small extra thing... USB 2.0 is one way "simplex" at 400 Mbps/s and
IEEE
> 1394 both way's "full duplex" at 400 Mbps/s

As far as I am aware IEEE1394 is half-duplex i.e. bidirectional, a node may
either transmit or receive at a given time, but not do both simultaneously.
This is (very loosely) similar to the way USB works, which matches
half-duplex best of the three usual terms, though strictly speaking is a bus
with a logical star topology.

I don't know the details, but I've heard there is a more modern version of
1394 in the wings with a higher data rate, which might also offer full
duplex operation - perhaps someone here knows more details?

Of course, in the context of webcams this is a moot point, unless someone
can think of a reason to send a lot of data to a webcam! :o)

Phil

[Machete]

"mgred" > wrote in message
...
> Can somebody give me an overview on what firewire is and how does it
differ
> from USB? I have a friend who wants to use his video camera as a web cam
> and said he wants to use firewire. How would someone do this?
>
> Kevin

Sounds like you're up to no good! Let us know how it goes. heh heh
>
>