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Old 08-22-2011, 12:53 AM   #24
kranu
I <3 my Kindle
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Posts: 528
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Join Date: Nov 2010
Location: United States
Device: Kindle 3G + WiFi
Quote:
Originally Posted by kindle3zeng View Post
I wrote a sortof program that makes kindle as a second PC screen. The way it works is that it captures the screen on my computer, and then sends to kindle, and kindle then shows the image. It's like a media streaming system. The response time is terrible right now, it has a delay of about 0.5~1 second. I still don't know where the bottleneck is. The image I send over is zipped, the size for the full 800*600 screen is about 20~40k, and I only send over the difference between two consecutive screen shotshots, which is much smaller. Maybe the big issue here is finding out the updating area. Currently I don't have a good algorithm to get that out, so most of time, I guess, it's updating the whole screen.
A 0.5 second delay is pretty good. That's about how quickly you can turn through pages on the Kindle itself. Have you released the program yet?

I've experimented with screenshots myself, but the delay is about 6 seconds, even when connected over USB. I'm very interested in how your difference algorithm is implemented.
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