Re: File System for "disk-on-key" device

From: Rene Tschaggelar (none_at_none.net)
Date: 01/26/05 

Date: Wed, 26 Jan 2005 21:57:07 +0100

Rich Grise wrote:

> On Wed, 26 Jan 2005 01:39:39 -0800, Alex Zaretsky wrote:
>
>
>>We are developing a "camera on a stick".
>>It is actually a CMOS sensor camera with a very simple Micro controller
>>which supports the USB 2.0 protocol and MPEG2 encoder chip.
>>The idea is that the camera will compress rather small video clips in
>>MPEG2 format to the external "disk-on-key" (for example of M-Systems)
>>connected to the camera all the time during video capturing.
>>When the disk-on-key is inserted to a computer USB it should be
>>automatically accessable by Windows Explorer without installation of
>>any driver software.
>>
>>The problem we face is how to support the Windows File system without
>>using high-end controllers (ARM for example) with an operating system
>>running on it. We are really interested in keeping the price of the
>>device as low as possible.
>
>
> FWIW, I have a Fuji "Fine-Pix A210" with USB, and whether I plug it into
> Doze or Linux it just shows up as a drive. I have no idea what exact
> filesystem it is, or if it even makes any difference; in Doze it just
> shows up when I plug it in, with Linux, I have to mount it. So the OS has
> whatever drivers it needs - all you have to do is deliver data to it,
> I'd think.

Yes, since the PC, here Doze or Linux provides the USB driver.
The problems with these is writing to the USB stick from an
embedded systems where a USB host adapter is not trivial.
It is the USB part that is difficult, not the filesystem part.

Rene 

-- 
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
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