Power line locked image processing systems

摘要

A line locking system for use with X-ray video imaging equipment comprising: a system oscillator, a divider for frequency dividing the output of the system oscillator to obtain a signal having a frequency that is an integer multiple of the line frequency, a comparator for comparing the phase of the integer multiple signal to the phase of the line signal and means for controlling the oscillator frequency responsive to the output of the comparator.