(under the class definition) Subject matter wherein the characteristics of a particular record carrier are determined or a signal to be recorded is modified to compensate for the determined characteristics of a particular record carrier.
(1) Note. Examples of record carrier characteristics are: inhomogeneous magnetic coating, incomplete erasure of a prior recording and peculiar hysteresis.
(2) Note. Characteristics of magnetic recording or reproducing which are dictated by physical law and are not attributable to peculiarities of the record carrier are not included in this subclass.
