Data is transmitted onto 10Mbps coaxial cable and 10Mbps twisted-pair LAN media using a method called Manchester encoding. For each 0 and 1 transmitted across the medium:
The encoded representation of the bit has a voltage transition at its midpoint.
For a 0-bit, the first half is high and the second half is low.
For a 1-bit, the first half is low and the second half is high.
Figure A.1 shows the Manchester pattern for 1 0 1 1 1 0 0 1.
The fact that there is a transition within each bit makes it easy for a receiver to synchronize its timing with ...