Felix Härer wrote:
>
>>>Is it possible to use a pcmcia card reader with the jornada?
>>>
>>>
>>
>>
>>Should be, as far as I know all these readers do is wire the pins of a CF
>>card into the PCMCIA card. The actual signals used by PCMCIA and CF are
>>identical.
>>
>>
> Do other cards like sd or memorystick work the same way? Isn't there
> anything more
> to do then a "re-arrange" of the pins?
No, the pin outs from SD and memorystick work differently. Think of
compact flash as just being a smaller version of PCMICA while SD and
memorystick are something totally different.
>
>>>Or is it even possible to get a usb-pcmcia with a connected card reader
>>>working?
>>>
>>>
>>
>>I'm not aware of any USB Pcmcia (16-bit) cards. The Jornada only has 16-bit
>>PCMCIA support and does not support 32-bit cardbus cards which are now
>>pretty common. The only way i'm aware of doing this is to use the Ratoc
>>Compact Flash USB Host (
>>http://www.ratocsystems.com/english/products/subpages/cfu1u.html) along with
>>a PCMCIA to CF converter and i'm not 100% certain the Jornada will provide
>>enough power to do this.
>>
>>
>>
> Thanks for the link and information, but anyway it's to expensive ...
>
>>Another problem you might encounter once you actually copy the image is that
>>the Jornada dosen't have the memory to display the resulting image. I have a
>>3 megapixel (2048x1536) camera which means that a decompressed image is 9
>>megabytes. None of the programs I tried where clever enough to rescale the
>>image as they decompressed it from jpeg. Althought Pocket IE viewed them
>>(but without zooming out which made it hard to figure out what the image
>>actually was!).
>>
>>
> May be it's possible to convert the images to a lower resolution
Again depends on the conversion program being clever about it. If it
decompresses the entire image, resizes it and recompresses it then it
may not have enough memory.
You can get round this one with a swap partition but this is slow and
most flash cards can only be rewritten about 100,000 times so swapping
is a very good way to wear out your memory card. I guess if you turned
on swapping, converted the image and turned it back off again you'd be ok.
The other obvious solution is to take images at a lower resolution on
the camera if you want to view them on the Jornada.
Received on Tue Mar 07 2006 - 15:32:19 EST
This archive was generated by hypermail 2.2.0 : Tue Mar 07 2006 - 15:32:35 EST