| 摘要 |
A sector data decoding circuit of a CD-ROM drive including an external memory has an input data processing unit which rearranges data received from a frame decoder of the CD-ROM drive into a CD-ROM sector data format. The rearranged data is stored in the external memory, Q and P signals are generated as is an error correcting interval signal. An L-plane error correcting unit and an R-plane error correcting unit are provided for respectively performing error correction on the L-plane and R-plane data within the one sector data stored in the external memory. A host data transmitting unit transmits the data stored in the external memory after being error corrected, to a host computer. Thus, the error correcting process separately performs error correction in parallel to shorten a period of receiving the data, thereby affording much more time in transmitting the data.
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