Patent ID: 6158040
Filing Date: 2000-12-05
Classification: G11B,G11C,H03M

Abstract:
A buffer for buffering data from an optical disk to a host, the buffer comprising:a disk interface, coupled to receive data from the optical disk, for outputting data words, the data from the optical disk arranged into disk blocks containing disk rows and disk columns;a memory, coupled to receive the data words from the disk interface, for storing the disk blocks as memory blocks, wherein disk rows are stored in memory-block columns and disk columns are stored in memory-block rows; anda column-syndrome generator, coupled to the memory, for reading data in a disk column by reading a memory-block row from the memory, the column-syndrome generator outputting a column syndrome for the disk column, the column syndrome indicating when an error is present in the disk column;whereby memory-block rows are read to generate column syndromes.