Patent ID: 8824251
Filing Date: 2014-09-02
Classification: G11B

Abstract:
1. A library apparatus comprising: a plurality of recording media having recording surfaces on both surfaces; a recording medium storage unit configured to store the plurality of recording medium; a first recording and reproducing unit configured to record and reproduce data on and from a recording medium; a second recording and reproducing unit configured to arrange a laser so as to align a light emission direction of laser light to a direction opposite to a light emission direction of laser light from the first recording and reproducing unit, and record and reproduce data on and from the recording medium; a recording medium transportation unit configured to transport and transfer the recording medium between the recording medium storage unit and one of the first and second recording and reproducing units; and a controller configured to control the recording medium transportation unit and the recording and reproducing unit, wherein; if recording or reproduction is performed on or from one surface of the recording medium, the controller controls the recording medium transportation unit so as to transfer the recording medium to the first recording and reproducing unit; and if recording or reproduction is performed on or from the other surface of the recording medium, the controller controls the recording medium transportation unit so as to transfer the recording medium to the second recording and reproducing unit; wherein for a loaded recording medium which is first loaded and both recording surfaces of which are unrecorded, the first or second recording and reproducing unit determines a front or rear surface of the loaded recording medium based upon a direction of the loaded recording medium; and wherein the first or second recording and reproducing unit records identification data regarding to identification of the front or rear surface determined by the direction of the loaded recording medium onto the loaded recording medium which is first loaded and both surfaces of which are unrecorded.