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William K.
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Platinum
Machine Vision interface standard?
William K.   12/20/2011 1:33:24 PM
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What is wrong with CoaXpress? That is a good standard! USB3 is an unneeded standard thhat is destined to deliver inferior results due to inferior hardware. Besides that, the only ones destined to benefit from USB3 are those selling the hardware. The connector format is neither robust nor particularly reliable, and not suited for any application where a field repair may ever be needed.

I realize that promoting a standard that someone has a financial stake in is logical, but the real purpose of USB3 is to obsolete previous versions and make money for the sellers. It is not really in a position to fill anyother  real need.

So let us instead consider the other standards that are able to fill the requirements and fill the need for robustness and reliability.

williamlweaver
User Rank
Platinum
Re: Standards mess
williamlweaver   12/20/2011 9:26:29 AM
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Beth, I'm all for standards... as long as they make my job easier. The great thing about standards is that in an ever-evolving technology environment they are of most benefit to the early-adopters. Standardizing on VHS, ZIP-disks, or RS-232 were all fantastic choices at the time -- and then we (predictably) evolved. Spending lots of time fretting about which standard will be around in 10 - 15 years really isn't a relevant question. In 1998 I was tasked with building a system that integrated six (6) scientific-grade 1-Megapixel CCD cameras. The frame grabber boards could only support two (2) cameras each, so the solution was three (3) PCs with one running as a master and the other two running as slaves. The fastest interface at the time was Ethernet so after lots of low-level TCP code the system acted as a single unit. I would have killed for USB3.  =]

Alexander Wolfe
User Rank
Blogger
Re: Standards mess
Alexander Wolfe   12/19/2011 6:39:07 PM
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Good point, Tim. It's ironic that on the one hand, the automation industry is attempting to get away from proprietary fieldbus protocols, which is leading to widespread adoption of Ethernet and new standards (e.g., for safety) being grafted on top of it. Yet here in the machine vision sector, which see forking and a battle among standards. The technical version of "can't we all just get along." More correctly, this is a typical market battle driven by advancing technology. USB3 is looking strong right now.

Rob Spiegel
User Rank
Blogger
What industries will use this?
Rob Spiegel   12/19/2011 2:45:23 PM
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Hi Ann,

I would imagine standards will support adoption. Will it also extend applications? Will it also expand the industries that can use this technology?

TJ McDermott
User Rank
Blogger
Re: Standards mess
TJ McDermott   12/19/2011 2:44:22 PM
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Beth, it's going to make me pause long and hard while trying to decide which protocol to use.  This is a sore point for me; anyone who wants to adopt these early stands the chance of seeing that company's favorite protocol falling into disfavor.

Beth Stackpole
User Rank
Blogger
Standards mess
Beth Stackpole   12/19/2011 6:34:11 AM
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Seems like the dizzying array of standards would present huge challenges to engineers building machine vision applications and systems in terms of dealing with compatibility issues and a host of extra configuration work. Is this mix of standards holding back adoption of machine vision tools or is this something where there is a pretty standard workaround?

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