Information recording/reproducing apparatus having control circuit of spindle motor

There is provided an information recording/reproducing apparatus for recording or reproducing an information to or from an information recording medium having a plurality of recording layers stacked on a substrate which can always perform stable spindle rotation control irrespective of an error of a...

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Bibliographic Details
Main Author Ikeda, Shingo
Format Patent
LanguageEnglish
Published 23.03.2010
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Abstract There is provided an information recording/reproducing apparatus for recording or reproducing an information to or from an information recording medium having a plurality of recording layers stacked on a substrate which can always perform stable spindle rotation control irrespective of an error of a desired frequency value or the like, and which includes an optical head for recording or reproducing an information to or from the recording layers by use of an optical beam; a spindle motor for rotating the recording medium; and a drive voltage holding circuit for holding a drive voltage of the spindle motor when the optical head performs switching between the recording layers for recording/reproducing.
AbstractList There is provided an information recording/reproducing apparatus for recording or reproducing an information to or from an information recording medium having a plurality of recording layers stacked on a substrate which can always perform stable spindle rotation control irrespective of an error of a desired frequency value or the like, and which includes an optical head for recording or reproducing an information to or from the recording layers by use of an optical beam; a spindle motor for rotating the recording medium; and a drive voltage holding circuit for holding a drive voltage of the spindle motor when the optical head performs switching between the recording layers for recording/reproducing.
Author Ikeda, Shingo
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Suzuki (6128261) 20001000
Watanabe et al. (6285635) 20010900
(11-176073) 19990700
Watanabe et al. (6493304) 20021200
Nakano et al. (6728179) 20040400
Matsuo et al. (5784346) 19980700
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Title Information recording/reproducing apparatus having control circuit of spindle motor
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