The present invention provides apparatus for calculating the skew distortion introduced in {HEAD ~ each channel} of {TAIL ~ a multi channel longitudinal recorder} when recorded information signals in at least two channels contain a detectable characteristic 
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The present invention provides apparatus for calculating the skew distortion introduced in { HEAD ~ each channel } of { TAIL ~ a multi channel longitudinal recorder } when recorded information signals in at least two channels contain a detectable characteristic
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH