US PATENT SUBCLASS 360 / 77.05
.~.~.~.~ By servo signal component from carrier surface separate from information signal bearing surface

Current as of: June, 1999
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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}
77.02  DF  .~.~.~ Rotary carrier {5}
77.05.~.~.~.~ By servo signal component from carrier surface separate from information signal bearing surface

DEFINITION

Classification: 360/77.05

By servo signal component from carrier surface separate from information signal bearing surface:

(under subclass 77.02) Subject matter wherein the record carrier includes two surfaces one of which has a continuous path along which an information signal is stored and the other has a continuous path along which at least a component of a transducer head positioning servo control signal is stored.