US PATENT SUBCLASS 360 / 130.23
.~.~.~.~.~ Helical scan

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

110  DF  HEAD {13}
128  DF  .~ Head accessory {4}
130.2  DF  .~.~ Record guide {1}
130.21  DF  .~.~.~ Tape record {1}
130.22  DF  .~.~.~.~ Rotating head {1}
130.23.~.~.~.~.~ Helical scan {1}
130.24  DF  .~.~.~.~.~.~> Head drum details

DEFINITION

Classification: 360/130.23

Helical scan:

(under subclass 130.22) Subject matter where the head rotation involves a helical scan of the record