US PATENT SUBCLASS 369 / 93
SYSTEMS HAVING PLURAL PHYSICALLY DISTINCT INDEPENDENT TRACKS ON A SINGLE STORAGE MEDIUM SURFACE

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

93SYSTEMS HAVING PLURAL PHYSICALLY DISTINCT INDEPENDENT TRACKS ON A SINGLE STORAGE MEDIUM SURFACE {4}
94  DF  .~> Having layered storage medium
95  DF  .~> Common time base (i.e., simultaneous)
96  DF  .~> Continuous consecutive storage or retrieval of interrupted track for single signal (e.g., automatic reversal) {1}
98  DF  .~> Indexing to discrete signal tracks (e.g., consecutive, by chance)

DEFINITION

Classification: 369/93

SYSTEMS HAVING PLURAL PHYSICALLY DISTINCT INDEPENDENT TRACKS ON A SINGLE STORAGE MEDIUM SURFACE:

(under the class definition) Subject matter having a storage medium element with plural spaced apart information modulated tracks.

(1) Note. Adjacent sections of a single continuous spiral track are not plural tracks; however, distinct interleaved spirals are plural tracks for purposes of this subclass.