How to send signal back to the scanner.

Question

Hi all, In my project I'm supposed to send the signal back to the scanner to force it make a serie of beeps , block the scanner or something like this. Does anyone know how to approach this ?
Thanks for any help.
Regards.

Answer 1

Hi all, In my project I'm supposed to send the signal
back to the scanner to force it make a serie of beeps
, block the scanner or something like this. Does
anyone know how to approach this ?
Thanks for any help.
Regards.Try a package named: JTwain, which is available at http://asprise.com/product/jtwain.
JTwain supports all kinds of digital cameras and scanners.
You can use Java to access, contorl digital cameras and scanners, and of course,
to acquire images with flexible settings.
The developers' guide is available @ http://asprise.com/product/jtwain/devGuide.php
Here is the sample code:
try {
   // the SourceManager manages and controls all the data(image) sources, eg. scanners, digital cameras,
   Source source = SourceManager.instance().getDefaultSource();
   source.open();
   // Enables or disables the UI
   source.setUIEnabled(false);
   Image image = source.acuqireImage();
   ... // Uses image here ...
   // Saves the image into a file
   source.saveLastAcquiredImageIntoFile("test.jpg");
}catch(Exception e) {
   e.printStackTrace();
}finally{
   SourceManager.closeSourceManager();
}Good luck!