Patent ID: 7463574
Filing Date: 2008-12-09
Classification: G11B

Abstract:
1. An information recording medium storing: data that is recorded in a plurality of blocks, each of which includes a plurality of sectors; first dummy data that is recorded on an area just before each of the blocks; second dummy data that is recorded on an area just after each of the blocks; and end dummy data that is recorded on an area just after the area of the second dummy data that is recorded just after a last of the blocks, wherein the first dummy data is different in data length than the second and end dummy data, includes a predetermined common pattern with the second and end dummy data, and has a first repetitive data pattern in which the predetermined common pattern is repeated at predetermined times, wherein the second dummy data is different in data length than the first and end dummy data, includes the predetermined common pattern with the first and end dummy data, and has a second repetitive data pattern in which the predetermined common pattern is repeated at predetermined times, wherein the end dummy data is different in data length than the first and second dummy data, includes the predetermined common pattern with the first and second dummy data, and has a third repetitive data pattern in which the predetermined common pattern is repeated at predetermined times, and wherein at least one of the first dummy data, the second dummy data and end dummy data further includes a data pattern different from the predetermined common pattern.