US 9,812,166 B2
Recording and reproducing device for reconstructing user data
Hisahiro Hayashi, Tokyo (JP); and Norimoto Ichikawa, Tokyo (JP)
Assigned to Hitachi-LG Data Storage, Inc., Tokyo (JP)
Filed by Hitachi-LG Data Storage, Inc., Tokyo (JP)
Filed on Jun. 6, 2016, as Appl. No. 15/173,895.
Claims priority of application No. 2015-124167 (JP), filed on Jun. 19, 2015.
Prior Publication US 2016/0372151 A1, Dec. 22, 2016
Int. Cl. G11B 31/00 (2006.01); G11B 20/18 (2006.01); G11B 20/12 (2006.01); G06F 11/14 (2006.01); G11C 29/42 (2006.01); G06F 11/10 (2006.01)
CPC G11B 20/1833 (2013.01) [G11B 20/1217 (2013.01); G06F 11/1076 (2013.01); G06F 11/14 (2013.01); G06F 11/1402 (2013.01); G11B 2020/1843 (2013.01); G11C 29/42 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A data reconstruction method of reproducing user data from a recording medium in which the user data is recorded, the user data reconstruction method comprising:
obtaining data from the recording medium with a reproducing device;
performing error correction using a second correction code specified in a file format employed in the recording medium on the obtained data to generate reproduction data;
reading a first error correction code different from the second error correction code from the reproduction data; and
performing error correction on the reproduction data using the first error correction code and reconstructing the user data,
wherein the user data and the first error correction code are stored on the recording medium with the first error correction code added to each of a plurality of pieces of the user data, and
wherein one or more of the pieces of the user data each have a predetermined size and another one of the pieces of the user data is less than the predetermined size, and predetermined data is embedded in the other one of the pieces of user data which is less than the predetermined size until the other one of the pieces of user data with the embedded predetermined data has the predetermined size.