US PATENT SUBCLASS 369 / 113
.~.~ With medium contacting drum or gate in optical system (e.g., sound head)

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

99  DF  SPECIFIC DETAIL OF INFORMATION HANDLING PORTION OF SYSTEM {4}
100  DF  .~ Radiation beam modification of or by storage medium {20}
113.~.~ With medium contacting drum or gate in optical system (e.g., sound head) {2}
114  DF  .~.~.~> Movable roller support for optical path
115  DF  .~.~.~> With driving or stabilizing mechanism

DEFINITION

Classification: 369/113

With medium contacting drum or gate in optical system (e.g., sound head):

(under subclass 100) Subject matter including an element in

or adjacent to the beam path which positions the storage medium and has either a linear or cylindrical contacting surface.