US PATENT SUBCLASS 369 / 44.37
.~.~ Plural incident beams

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

43  DF  WITH SERVO POSITIONING OF TRANSDUCER ASSEMBLY OVER TRACK COMBINED WITH INFORMATION SIGNAL PROCESSING {1}
44.11  DF  .~ Optical servo system {12}
44.37.~.~ Plural incident beams {1}
44.38  DF  .~.~.~> Recording

DEFINITION

Classification: 369/44.37

Plural incident beams:

Subject matter under 44.11 wherein plural beams incident upon the recording medium are used, which may be one or more focusing, tracking, playback or recording beams.

(1) Note. Plurals beams created by splitting a single beam from the recording medium (e.g., etc., reflected beam is split and directed to plural detectors) is not classified here.