CD-ROM decoder having means for reading selected data from a CD into a memory

  • US 5,499,252 A
  • Filed: 11/10/1993
  • Issued: 03/12/1996
  • Est. Priority Date: 11/20/1992
  • Status: Expired due to Term
First Claim
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1. A CD-ROM decoder for receiving digital data which has been subjected to signal processing by a digital signal processor in accordance with a predetermined format, correcting code errors of said digital data, and supplying the corrected data to a host computer, said CD-ROM decoder comprising:

  • an input interface means for receiving ROM data from said digital signal processor and writing said ROM data into a memory;

    a subcode reading means for receiving subcode data from said digital signal processor and writing said subcode data to the memory;

    an error correcting means for reading from the memory said ROM data which is written by said input interface means, detecting and correcting code errors of said ROM data, and writing said ROM data into the memory; and

    an output interface means for reading from said memory said ROM data which is written by said error correcting means and said subcode data which is written by said subcode reading means, and supplying said ROM data and said subcode data to the host computer.

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