3 ms·
>USB 3.0 can do 5 Gbps which means 67 Hz would be an upper bound. That's assuming that it's uncompressed, and if you're talking about using it largely for text
by mistercow 14y ago
>USB 3.0 can do 5 Gbps which means 67 Hz would be an upper bound.
That's assuming that it's uncompressed, and if you're talking about using it largely for text, not compressing would just be crazy. For that kind of input, you can easily get 10x compression ratios losslessly. And at that resolution you can get away with extremely aggressive lossy compression, and ratios on the order of 50x are totally plausible. There's no reason for bandwidth to be a problem here.
- m_eiman 14y agoLossy compressions would probably be very annoying, imagine having slow-motion MPEG defects around everything that's updated :P
- mistercow 14y agoNo need to use interframe compression. Just JPEG will get you around 50x ratios with virtually no discernible artifacts at pixel densities that high (for mostly-text input). And there's no slow-motion about it; the whole point of compressing is to allow for very high framerates. If you can't get the E Ink to push 30hz, then there's probably not much reason to use lossy compression anyway. If you can get over 30hz, then lossy compression will keep you from totally saturating the USB 3 bus.