As characteristic of the horizontal synchronizing signal, {HEAD ~ the phase difference} between the horizontal synchronizing signal and {TAIL ~ the video signal} is constant 
As characteristic of the horizontal synchronizing signal , { HEAD ~ the phase difference } between the horizontal synchronizing signal and { TAIL ~ the video signal } is constant
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH