US PATENT SUBCLASS 360 / 55
GENERAL RECORDING OR REPRODUCING

Current as of: June, 1999
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360 /   HD   DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL

55GENERAL RECORDING OR REPRODUCING {8}
57  DF  .~> Selective erase recording
58  DF  .~> Boundary displacement recording or transducers
59  DF  .~> Thermomagnetic recording or transducers
60  DF  .~> Recording-or erasing-prevention
61  DF  .~> Signal switching {3}
65  DF  .~> Specifics of equalizing
66  DF  .~> Specifics of biasing or erasing
67  DF  .~> Specifics of the amplifier {1}

DEFINITION

Classification: 360/55

(under the class definition) Subject matter including the use of magnetic or other physical phenomena, specific techniques or specific circuitry for magnetically recording or reproducing information in any signal form.

(1) Note. This subclass is the residual area for devices and methods concerned with processing of signals in a manner not provided for above. Subject matter properly classified above should not, as a matter of course, be cross-referenced here.

(2) Note. Documents including general descriptions of the phenomena of magnetic recording but are principally concerned with mechanisms or elements falling within the class definition should not be classified in this subclass. See mechanism or element subclasses below.