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Interface circuit and optical disk manufacturing system that uses same

  • US 6,343,028 B1
  • Filed: 09/02/1999
  • Issued: 01/29/2002
  • Est. Priority Date: 09/24/1998
  • Status: Active Grant
First Claim
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1. A master recording medium manufacturing apparatus, comprising:

  • digital information converting means for converting information to be recorded to digital information; and

    interface means, the interface means including;

    synchronization information generating means for generating synchronization information having a prescribed period;

    first light-transmitting means for optically transmitting the synchronization information;

    first light-receiving means for receiving optically transmitted, synchronization information from the first light-transmitting means;

    synchronization controlling means for outputting digital information from the digital information converting means in synchronization with the synchronization information that is optically received by the first light-receiving means;

    second light-transmitting means for optically transmitting digital information from the synchronization control means;

    second light-receiving means for optically receiving digital information that is optically transmitted from the second light-transmitting means;

    code detecting means, based on the synchronization information from the synchronization information generating means, for detecting a code of the digital information that is optically received by the second light-receiving means, and outputting the detected code information; and

    waveform-shaping means, based on the synchronization information from the synchronization information generating means, reading the code detection information from the code detecting means, thereby waveshaping the digital information that is optically transmitted from the synchronization control means and then outputs the resulting shaped waveform; and

    master recording means for recording digital information that has been waveshaped by the interface means onto a recording medium that serves as the original recording medium for the manufacture of an optical disk.

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