Talk:IEEE 1394/Archive 2007

message: Can someone please clarify in the article the relationship between firewire and DV-input? There is no mention of DV-input anywhere in Wikipedia, but a Google search finds 278,000 hits! Emmanuelm 01:46, 24 September 2006 (UTC)
thread_title:  DV-input? 

message: It appears the PC World has a better written article than we do! See http://www.pcworld.com/howto/article/0,aid,14371,00.asp if you don't believe me. What do people think? - Ta bu shi da yu 08:02, 8 Jun 2005 (UTC)
replies: text: To continue the pissing contest, the current Firewire standard is FW800, twice as fast as the original Firewire 400. And even that is faster than 'Full speed' USB 2.0. --Imroy 20:27, 18 January 2007 (UTC)
thread_title:  Throwing down the gauntlet 

message: I have read that Microsoft's native drivers (in XP SP2) do not support anything above S100, and that they have no incentive to fix this because of their relationship with Intel (and competition with USB spec).  You get situations like Adaptec's 1394b product that ships without drivers so customers have no way of running it at S800 (or even S400 come to that). My sources are hardly authoritative (forum postings, e.g. ).  If true, it's important information and should be included in the article, but I'd like to confirm it first.  Any help? Stephen.frede 10:36, 24 March 2006 (UTC)
thread_title:  PC drivers 

message: Why is there no mention of future Firewire speeds? --24.249.108.133 20:08, 29 September 2006 (UTC)
thread_title:  No mention of FW1600 or FW3200 

message: What can be connected to FW, besides well known devices like hard drives, optical units and video cameras ?
xerces8, --85.10.26.132 11:23, 7 January 2007 (UTC)
thread_title:  Device types, examples ? 

message: "Because any hot-pluggable computer device has a risk of short-circuiting" I don't think this statement is factual. I don't see any reason why you *cant* create a hot-pluggable device which *cant* short circuit. In fact I don't see how this applies to USB. --Codeczero 19:55, 9 March 2007 (UTC)
thread_title:  Disputed hot plugging short circuit 

message: My Toshiba Libretto U105 laptop comes with a connector on the front which I have reason to believe is a Firewire port.  However, it is not labelled with the official logo (as shown in the article); instead, it has a curious "i" with a dot superimposed (ASCII art below) and the text "S400".
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Is this funky logo Toshiba's own idea, or something else entirely?
Also: Should "S400" (et al.) redirect to the FireWire page?  Googling for S400 doesn't bring up any useful pages, except they're model numbers for (among others) a Canon digital camera, a Microtek flatbed scanner, and a HiTi ... something.  The Belkin F3N400-06-ICE cable http://www.amazon.com/Belkin-F3N400-06-ICE-1394-S400-6PIN/dp/B00004Z62J appears to be the first genuine hit, except it's 6-pin whereas my connector looks more (or less) like the 4-pin example. era 12:10, 28 March 2007 (UTC)
replies: text: Isn't that the iLink logo, which I believe is just another name for Firewire/IEEE1394? Certainly there's an image at  using it as part of a logo for iLink compatibility. Mark Grant 16:13, 8 April 2007 (UTC)
thread_title:  S400 / S800 redirect here? 

message: I have a digital FireWire camera.
It can draw all its power from the FireWire bus.
(It's below 2 W.)
Is there a Cardbus FireWire card that I can plug this camera into and it "just works" ?
(Letting the camera draw power directly from the laptop battery, so I
don't have to be tethered to a power outlet).
* http://www.trendnet.com/products/TFW-H2PC.htm -- the card I selected because I hoped it supplied power, but apparently doesn't supply power after all. (Or is the one I have broken?)
* cards that have "4 pin FireWire connectors" -- definitely don't work for me, because they don't even have the power pins
* http://www.synchrotech.com/product-1394/cardbus-firewire_03.html -- Even though it has 6 pin connectors, the website specifically says it doesn't supply power
* "Top 5 FireWire Notebook PC Cards" -- I looked at the manufacturer's web site for each of these 5 cards. Each manufacturer fails to say anything about power or voltage or current supplied by the card. (Or am I not looking in the right place?)
If *no* Cardbus cards supply power, wouldn't that be a fact notable enough to mention in this article?
Is there a ExpressCard FireWire card that I can plug this camera into and it "just works" ?
--68.0.120.35 05:03, 3 April 2007 (UTC)
thread_title:  power on FireWire cards 

message: Is this section even needed? It's only one point long and its reference is to something which is probably just a complete coincidence, and has nothing to do with the actual subject at hand. I believe it should be removed. -- Permafrost 15:11, 3 April 2007 (UTC)
replies: text: Agreed: it looks spurious to me. Mark Grant 23:12, 7 April 2007 (UTC)
thread_title:  Movie References 

message: can a 4 pin/4pin cable be used to connect a laptop n a camcorder..my camcorder as well as laptop have it..but i cudn't find a wire..shud i search more or leave..ie if its hopeless..
219.91.247.74 13:26, 12 April 2007 (UTC)
thread_title:  camcorder to laptop 

message: Lttldl, you found one link that says what you think is right. I found dozens (). Plus, the source I used was Aviation Week & Space Technology, which I trust more than I trust you. Please leave it alone as is. Plus your edits as you made them do not actually make sense. —Joseph/N328KF (Talk) 12:21, 26 April 2007 (UTC)
thread_title:  MIL-STD-1394B 

message: Under the 'Security issues' heading DMA is described as "where a device can use hardware to map internal memory to FireWire's "Physical Memory Space"". This is memory mapping, not direct memory access.
Also, this doesn't pose any more of a security risk than PIO as the driver has to initiate the transfer and the OS arbitrates access to the mapped memory locations. A device can't initiate a transfer without the driver's help, and if you can get an untrustworthy driver onto someone's system you could've put whatever you wanted on with that. 203.5.217.3 23:40, 10 May 2007 (UTC)
thread_title:  DMA/Memory Mapping 

message: Someone knowledgeable might want to revise this part. It's almost unreadable for anyone who isn't an engineer, and is useless as part of an encyclopedic entry. I'll try to improve it a bit, but an expert might best handle this. focoma 01:58, 15 July 2007 (UTC)
replies: text: After reading it a little more carefully, I was able to decipher the gibberish. I've made it a lot more readable now. focoma 02:34, 15 July 2007 (UTC)
thread_title:  FireWire S800T (IEEE 1394c) 

message: Is the FireWire logo/icon really a stylized depiction of a flux capacitor? Maybe it should be mentioned if it's true. --NetRolller 3D 18:24, 20 December 2007 (UTC)
replies: text: First find a reputable source and then WP:BE BOLD -- KelleyCook (talk) 21:52, 20 December 2007 (UTC)
thread_title:  FireWire logo 

message: Wikipedia needs to implement immediate movement of challenged material not citing reputable original research to another page -- effectively deleting it from public use immediately. Material can then be restored if citations are provided or automatically deleted on timer countdown.
Wikipedia should not denigrate the designed behavior of standards like 1394, until such time as reputable academic or industrial groups publish a study on unintended behavior or practical experiences of ordinary users. Hearsay in popular magazines or personal experience does not count.
Real world accidents or intermittent problems of daily users are seldom scientifically documented by definition of their unplanned nature.   If rumors grow to sufficient magnitude, a series of repeatable experiments will follow by some concerned industrial or academic group.
Thus as far as Wikipedia standards go "damage from hotplugging Firewire devices" does not exist -- no matter how widely the urban legends has spread nor what experts believe it possible with a sloppy enough connector. Effectively for Firewire, momentarily touching positive power to ground or grounded shield either: (1) cannot happen since the connectors are designed not to permanently fit together or (2) doesn't cause damage in firewire equipped systems.
Incidentally has anyone yet cited sources for the idea that "fire is hot"?
Yes I think challenging the possibility of real world equipment accidents is stupid. I also think that even when true citing references may be difficult as this is unintended, low incidence behavior. Yes you can get an expert to testify that is possible in a trade magazine. But is that a proper reference given that the testimony is almost certainly anecdotal based rather than researched? I would see ground for challenging that as a proper citation.
65.26.137.248 09:04, 7 October 2007 (UTC)
thread_title:  To Be or Not Be