記録装置、記録方法、再生装置、再生方法、符号化装置、及び、復号装置

Japanese Patent JP7371637

B2

The present technology relates to a recording apparatus, a recording method, a reproduction apparatus, a reproduction method, a recording medium, an encoding apparatus, and a decoding apparatus which enable recording or reproduction to be easily implemented at high line density.User data is encoded into a multilevel edge code, and a multilevel code whose value changes in accordance with the multilevel edge code is recorded. The multilevel edge code is generated through state transition of a code generation model which includes a state representing the number of times that zero is consecutive corresponding to a number of ways of the number of times that zero is consecutive, which is the number of times that an edge of 0 is consecutive among edges representing a change amount from an immediately preceding value of the multilevel code of an ML value which is equal to or greater than 3, and which transitions to a state representing the number of times that zero is consecutive including 0 in a case where 0 is output, and transitions to a state representing that the number of times that zero is consecutive is 0 times in a case where one of 1 to ML-1 is output. The present technology can be applied to, for example, a recording and reproduction apparatus, and the like, which perform recording and reproduction.

Satoshi Higashino

JP2020553755A

October 31, 2023

October 16, 2019

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Sony Group Corporation

G11B20/12; G11B20/10; G11B20/14; H03M5/14; H04L25/49

JP2000348345A
JP2004005787A
JP2000215462A

US6385255
US9252808
WO2017204001A1
WO2016175035A1

Takashi Nishikawa
Yoshio Inamoto
Yusuke Miura

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