Method and apparatus for compensating data in reproducing optical disk

An apparatus for compensating data recorded on a disk, said apparatus comprising:

• a buffer having a first region for storing a block of data currently being reproduced, and a second region for storing a previous block of data;
• a signal processor for digitizing an input signal, for storing the block of data in the buffer, and for demultiplexing the block of data;
• and
• a controller for determining the type of data from a header in the block of data demultiplexed by the signal processor, for substituting an address of the second region, in which the previous block of data is stored, for an address requested by a host when a number of seek operations exceeds a predetermined reference value, and for transmitting a block of data corresponding to the substituted address to the host.

A method of compensating data recorded on a disk, the method comprising the steps of:

• (a) defining a first block region for storing a block of data currently being reproduced and a second block region for storing a previous block of data;
• (b) performing a disk seek operation in response to a read command;
• (c) determining a type of data block from a header of a sought block when a number of seek operations is greater than a predetermined value in reproducing the disk in step (a);
• (d) substituting an address of a block of data in the second block region, corresponding to a data block determined in step (c), for an address requested by a host;
• and
• (e) transmitting the block of data in the second block region, substituted in step (d), to the host.