H ELECTRICITY
H04 ELECTRIC COMMUNICATION TECHNIQUE
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L7/00 Arrangements for synchronising receiver with transmitter
H04L7/02 Speed or phase control by the received code signals, the signals containing no special synchronisation information
H04L7/033 using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop