360 / | HD | DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL |
69 | DF | AUTOMATIC CONTROL OF A RECORDER MECHANISM {3} |
75 | DF | .~ Controlling the head {3} |
77.01 | DF | .~.~ Track centering {2} |
77.12 | DF | .~.~.~ Elongated web carrier (i.e., tape) {1} |
77.13 | .~.~.~.~ Transverse scan path {2} | |
77.14 | DF | .~.~.~.~.~> By pilot signal {1} |
77.16 | DF | .~.~.~.~.~> Having head deflection drive (e.g., piezoelectric bimorph) {1} |