For Correcting Time Base Error [n: During Transducing Operation, By Driving Or Moving The Head In A Direction More Or Less Parallel To The Direction Of Travel Of The Recording Medium, E.g. Tangential Direction On A Rotating Disc (by Driving Or Moving The Head In A Direction Which Cuts Across The Direction Of Travel Of The Recording Medium G9b/15.022, G9b/15.055, G9b/19.027b2)] {g11b 21/03} Patents (Class G9B/21.007)