Patent ID: 7530006
Filing Date: 2009-05-05
Classification: G11B,H03M

Abstract:
1. A data recording and reproducing device that records a data block having input data encoded with convolutional codes on a recording medium, reproduces the data block through a partial response channel, and decodes the data block from the reproduced signal, utilizing an iterative decoding technique by which the data block is decoded through iterative decoding using likelihood information, the device comprising: a dividing unit that divides the data block encoded with the convolutional codes into a plurality of data sub blocks; a recording unit that records the data sub blocks at non-adjacent locations on the recording medium; a plurality of detecting units that detect the data sub blocks in parallel, the data blocks being scatteringly recorded at non-adjacent locations on the recording medium; and a plurality of PR channel decoders that calculate likelihood information as to the respective data sub blocks in parallel, the data sub blocks being detected by the respective detecting units.