8b/10b and 64b/66b encoding
The IBM-patented 8b/10b method used by ARINC 818 to date encodes 8-bit data bytes in 10-bit transmission characters to improve the physical signal. This encoding is also used by Fibre Channel, Gigabit Ethernet, 10 Gigabit Ethernet, ATM transmission, and other interfaces. The alternate encoding, 64b/66b, will be used in the future by extremely high-speed ARINC 818-2 applications: 14.025 Gb/s, 21.0375 Gb/s, and 28.05 Gb/s.