Synchronization for digital cable network

摘要

A communication system adjusts data rate to compensate for frequency variations in conversion clocks. The communication system includes a conversion clock at a transmitter and a conversion clock at a receiver that advance respective counters. A difference between the counters controls a resampling of digital data sent from the transmitter to the receiver. The conversion clocks run independently of each other. The difference between the counters incremented by respective conversion clocks provides an indication of the difference in frequencies between the conversion clocks. The difference is used to determine the ratio at which digitized information is resampled at the receiver before being converted to the analog domain.