Importance

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Abstract

CD-ROM data is received to an interface 1. When a high reliability is required, a sector segmenting circuit 4 is selected by a switching circuit 3. The input data is sector segmented to the CD-ROM sector by the circuit 4. When a large recording capacity is requested, a CD-ROM decoder 5 is selected by the switching circuit 3. After the CD-ROM data was error corrected, user bytes in the data are sector segmented into 2-kbyte sector. The data converted into the CD-ROM sector or 2-kbyte sector is integrated to a block structure by the block segmenting circuit 7 and is, further, subjected to processes such as error correction coding and digital modulation by a recording processing circuit 8. A pattern of a sync that is added by the recording processing circuit 8 is made different in accordance with a sector construction. Recording data from the recording processing circuit 8 is recorded onto an optical disc 2 by an optical pickup 10.

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First Claim