公开(公告)号：US09063871B2

公开(公告)日：2015-06-23

申请号：US14112396

申请日：2013-04-01

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Tsuyoshi Nakasendo ,  Yasumori Hino ,  Kohei Nakata ,  Yuji Takagi

IPC: G06F11/10 ,  H03M13/45 ,  H03M13/29 ,  H03M13/00 ,  G11B20/10 ,  G11B20/18 ,  H03M13/11

CPC classification number: G06F11/10 ,  G11B20/10361 ,  G11B20/1833 ,  H03M13/1111 ,  H03M13/2957 ,  H03M13/45 ,  H03M13/6343 ,  H03M13/6577

Abstract: A decoding device (1) has: a reliability calculating unit (5) which calculates reliability information having a non-linear relationship with a noise distribution of a PR communication path (3) in at least part of or all of the reliability information based on characteristics of the PR communication path (3) and a predetermined modulation rule from an encoded signal that is obtained from the PR communication path (3); a reliability correcting unit (17) which corrects the reliability information calculated by a reliability calculating unit (5); and an error correction decoding unit (18) which performs error correction decoding on the reliability information corrected by the reliability correcting unit (17).

Abstract translation: 一种解码装置（1）具有：可靠性计算部（5），在至少一部分或全部可靠性信息中，根据PR通信路径（3）的噪声分布，计算与所述PR通信路径（3）的噪声分布具有非线性关系的可靠性信息 PR通信路径（3）的特征和来自PR通信路径（3）获得的编码信号的预定调制规则; 可靠性校正单元，其校正由可靠性计算单元计算出的可靠性信息; 以及对由可靠性校正单元（17）校正的可靠性信息执行纠错解码的纠错解码单元（18）。

公开(公告)号：US08953426B2

公开(公告)日：2015-02-10

申请号：US14362473

申请日：2013-09-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Harumitsu Miyashita ,  Kohei Nakata ,  Yasumori Hino

IPC: G11B7/0045 ,  G11B20/10 ,  G11B7/005 ,  G11B7/135 ,  G11B20/12

CPC classification number: G11B20/10046 ,  G11B7/005 ,  G11B7/0053 ,  G11B7/131 ,  G11B7/135 ,  G11B20/12 ,  G11B2020/1267

Abstract: An information reproducing apparatus includes a photodetector (200A) divided by a dividing line parallel to a recording track scanning direction into a first light-receiving section (202, 203) that receives reflected light of a center section of a recording track and a second light-receiving section (201, 204) that receives reflected light of a portion adjacent, in a radial direction of an optical disc, with respect to the center section, a first adaptive equalization filter (107) that performs waveform equalization of an output signal from the first light-receiving section (202, 203), a second adaptive equalization filter (120) that performs waveform equalization of an output signal from the second light-receiving section (201, 204), and a data decoder (108) that decodes reproduction data based on an output waveform from the first adaptive equalization filter (107) and an output waveform from the second adaptive equalization filter (120).

Abstract translation: 一种信息再现装置，包括：光电检测器（200A），被划分成与记录磁道扫描方向平行的分割线分成第一光接收部分（202,203），其接收记录磁道的中心部分的反射光;以及第二光 - 接收部分（201,204），其接收相对于中心部分在光盘的径向方向上相邻的部分的反射光;第一自适应均衡滤波器（107），其执行来自 第一光接收部分（202,203），执行来自第二光接收部分（201,204）的输出信号的波形均衡的第二自适应均衡滤波器（120）和解码的数据解码器（108） 基于来自第一自适应均衡滤波器（107）的输出波形的再现数据和来自第二自适应均衡滤波器（120）的输出波形。