Patent ID: 7003711
Filing Date: 2006-02-21
Classification: G11B,H03M,H04N

Abstract:
1. An information recording medium comprising: a management area where management information is recorded; and a plurality of physical sector areas used to record a plurality sector data blocks, which are generated by combining some data contained in a plurality of ECC blocks, wherein the plurality of ECC blocks as a source of the plurality of physical sector data blocks to be recorded in said plurality of physical sector areas is generated via a predetermined process, and the predetermined process generates the plurality of independent ECC blocks by: generating sector data which contains a data ID and is formed of a first number of bytes; generating re-arranged sector data by re-arranging data contained in the sector data to predetermined positions; generating a sector block by combining a plurality of re-arranged sector data items; generating a plurality of segmented blocks by segmenting the sector block; generating outer-code parity data by encoding data in a column direction, which forms each segmented block; generating inner-code parity data by encoding data in a row direction, which forms each segmented block; and individually appending the generated outer- and inner-code parity data to each segmented block.