US PATENT SUBCLASS 369 / 131
.~.~.~ Bidirectional information flow (e.g., record/replay switching)

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}
127  DF  .~ Mechanical modification or sensing of storage medium {6}
128  DF  .~.~ With electrical information signal processing {5}
131.~.~.~ Bidirectional information flow (e.g., record/replay switching)

DEFINITION

Classification: 369/131

Bidirectional information flow (e.g., record/replay switching):

(under subclass 128) Subject matter wherein the signal processing is switchable between a storage and a retrieval mode of information handling.

(1) Note. Typical systems classified here may have an amplifier which is switched between recording and playback modes.