4 ms·
It does. (Checksums)
by Ellipsis753 6y ago
It does. (Checksums)
- meragrin_ 6y agoAren't checksums for error detection and not error correction? As I understand it, error correction is having enough information to correct the error while error detection is only knowing an error has occurred.
- amelius 6y agoI guess checksums are ok for many applications if USB implements resending of data at the protocol level. For high-speed cameras it might be problematic though.
- joshspankit 6y agoreed-solomon is most likely used here. It’s the tech in CDs and ECC RAM. Checksums that also have enough data for recovery.
- deleted 6y ago[deleted]
- vvanders 6y agoError correction only makes sense if the latency of the read/write is long(i.e. spinning physical medium, co-sharrd radio channels). FEC isn't free(~2x overhead per bit recovery if I remember right) so if your error rates are infrequent then it's worse to use FEC over just resend/reread.