Electronics > Projects, Designs, and Technical Stuff

SD vs SDHC

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Kilrah:

--- Quote from: voltsandjolts on July 29, 2016, 11:09:45 am ---And neither was exFat before it was 'invented' and pushed down our throats via Windows Update. Any new open format could have been delivered in the same way and in fact could have seen much wider adoption (by virtue of being open).
--- End quote ---

exFAT existed 3 years before SDXC cards were announced. Why would you work on / develop support for an open standard when you've got something appropriate that's there, and fits the commercial goals?


--- Quote from: voltsandjolts on July 29, 2016, 11:09:45 am ---Maybe if they had been more helpful and used an open file system format they would sell more SD cards.

--- End quote ---
:-DD

Pretty much everything that has a use for exFAT already supports it and has for quite a while. Someone who needs it for a commercial product can afford the licence with no problem, they already have to pay for one for the use of SD in the first place anyway.
The only ones who might have trouble are hobbyists, and of course they don't care the slightest about those, it's insignificant.

voltsandjolts:


--- Quote ---exFAT existed 3 years before SDXC cards were announced

--- End quote ---

Hah, of course it did, Microsoft getting ready to sell it's wares!   :palm:


--- Quote ---Someone who needs it for a commercial product can afford the licence with no problem

--- End quote ---

And who pays for that, the consumer of course  :-DD

And then you pay for the app to get exFat on your phone, then your SDXC doesn't work in your NAS...all a PITA because of a file system that has less merit than many free and open solutions.

It would just be nice to buy an SDXC card that works interoperably across all my devices - that's what SD should be about, not just a memory stick for Windows.



bson:

--- Quote from: Kilrah on July 29, 2016, 11:35:14 am ---The only ones who might have trouble are hobbyists, and of course they don't care the slightest about those, it's insignificant.

--- End quote ---
I doubt hobbyists have any problems.  If you implement an open-source exFAT and put it up on github for instance there's no problem - you just can't sell products with it.  You can use it to your hearts content for your own purposes, or with friends, or the good people here at eevblog or elsewhere.  As long as you don't try to sell it there's no problem.  And if you do decide to sell it... just go license the rights.  It's no big deal any which way.

My main beef with SDXC is that there's no single patent pool that can be licensed using uniform boilerplate terms, unlike say MPEG LA.  Instead you need to figure out on your own all the random little things you need to license, then negotiate with each of the owners individually.  Miss something and you're now in the position of negotiating a posteriori which weakens your position.

Kilrah:

--- Quote from: bson on July 29, 2016, 02:59:52 pm ---I doubt hobbyists have any problems.  If you implement an open-source exFAT and put it up on github for instance there's no problem

--- End quote ---

Sure, what I meant was that as far as I knew an open source implementation didn't exist, so if you wanted to use exFAT in your microcontroller or FPGA-based gizmo you might have been in for a wild ride reverse-engineering and implementing it.

But a quick search shows that there's already an implementation coming from Samsung (which I assume works, since my Samsung things are perfectly happy with exFAT media :D ) so it's all a matter of wrapping it properly, no issue.
https://github.com/dorimanx/exfat-nofuse

voltsandjolts:


--- Quote --- I doubt hobbyists have any problems.

--- End quote ---

Sure, I just wish everybody could use it without problems.
If the cost of driver development was factored into the actual hardware cost of the SDXC card and thus a reference driver implementation made openly available, interoperability for the consumer would be much improved.

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