Method and apparatus of improving reliability of a descrambling operation in a DVD player

摘要

A method and apparatus for improving reliability of a descrambling operation of data in a DVD player. The method includes the steps of establishing a bit value corresponding to a predetermined portion of ID data in each of sectors of the data to be descrambled as an initial value for descrambling the data including ID data, the bit value being used during the descrambling of the data; checking an error of the ID data on a basis of the bit value; correcting the error of the ID data if the error is generated in the ID data; and descrambling the data by sector units. As a result, it is possible for a specific bit value to be maintained uniformly in one basic data block and for the specific bit value to have a continuity between basic data blocks, thereby minimizing an erroneous operation due to an error generated in the ID data during the descrambling of the data.