Generally, the present invention provides {TAIL ~ apparatus} and {HEAD ~ procedure} to restore the output signal to a known D.C. level, from which the video component is referenced 
Generally , the present invention provides { TAIL ~ apparatus } and { HEAD ~ procedure } to restore the output signal to a known D.C. level , from which the video component is referenced
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH