Patent ID: 8203924
Filing Date: 2012-06-19
Classification: G11B

Abstract:
1. An optical information recording/reproducing apparatus for carrying out the recording of information in an information recording area of an optical information recording medium mounted and/or reproducing the information recorded in said information recording area, wherein said optical information recording medium is an optical disc for carrying out the recording and/or reproducing of information in rotation, and a hologram disc for carrying out the recording and/or reproducing of information, by utilization of holography; said optical information recording/reproducing apparatus comprising: an optical disc drive unit for driving said optical disc mounted; a hologram disc drive unit for driving said hologram disc mounted; a disc discrimination unit for discriminating said optical information recording medium mounted is one of said optical disc and said hologram disc; a selection device for selecting said optical disc drive unit when said optical information recording medium is discriminated to be said optical disc, and for selecting said hologram disc drive unit when said optical information recording medium is discriminated to be said hologram disc, by said disc discrimination unit; and a drive device for driving the selected one of said optical disc drive unit and said hologram disc drive unit selected by said selection device; wherein said optical disc drive unit comprises an optical disc drive motor, and a disc holding unit arranged on the rotation axis of said optical disc drive motor, and mounting each of said optical disc and said hologram disc, so as to be capable of holding; wherein said hologram disc drive unit comprises a hologram disc drive motor, and a rotation providing unit arranged on the rotation axis of said hologram disc drive motor, and contacted with the hologram disc mounted at said disc holding unit, so as to rotate said hologram disc; and wherein said rotation providing unit contacts said hologram disc at a region from the outer circumference of a center hole of said hologram disc to the outer circumference of said hologram disc which is mounted on said disc holding unit.