公开(公告)号：US20230260545A1

公开(公告)日：2023-08-17

申请号：US18137624

申请日：2023-04-21

Applicant: Sharp Kabushiki Kaisha ,  Memory-Tech Holdings Inc.

Inventor： Hirohisa YAMADA ,  Takayuki NAKA ,  Masaki YAMAMOTO ,  Yoshihisa ADACHI ,  Hideharu TAJIMA ,  Masahito KONISHI

IPC: G11B7/007 ,  G11B20/12 ,  G11B27/30 ,  G11B7/24085 ,  G11B7/013

CPC classification number: G11B7/0079 ,  G11B20/1217 ,  G11B27/3027 ,  G11B7/24085 ,  G11B7/00736 ,  G11B7/013

Abstract: An optical disk (100) of the present invention includes (i) a medium information region (101) (a) in which type identification information is recorded by recesses and/or protrusions which are formed by a given modulation method and whose lengths are longer than a length of an optical system resolution limit of a playback device and (b) in which first address information is recorded in a first address data format and (ii) a data region (102) (a) in which content data is recorded by recesses and/or protrusions which are formed by the given modulation method and which include a recess and/or a protrusion whose length is shorter than the length of the optical system resolution limit and (b) in which second address information is recorded in a second address data format.

公开(公告)号：US10381039B2

公开(公告)日：2019-08-13

申请号：US16220003

申请日：2018-12-14

Applicant: Sharp Kabushiki Kaisha ,  Memory-Tech Holdings Inc.

Inventor： Hideharu Tajima ,  Masaki Yamamoto ,  Hirohisa Yamada ,  Takayuki Naka ,  Masahito Konishi

IPC: G11B7/00 ,  G11B20/10 ,  G11B7/1374 ,  G11B7/13 ,  G11B7/1392 ,  G11B7/013 ,  G11B7/005

Abstract: A reproducing device (100) includes (i) an optical pickup (6) for irradiating, with reproduction light, an optical disk (1) which is a super-resolution medium, (ii) an RF signal processing circuit (9) for converting, into a reproduction signal, light which reflected off optical disk (1), (iii) an i-MLSE detecting section (141) for evaluating quality of the reproduction signal, and (iv) a spherical aberration correcting section (142) for correcting a spherical aberration by using a result of evaluation of the quality of the reproduction signal.

公开(公告)号：US20180315447A1

公开(公告)日：2018-11-01

申请号：US16029682

申请日：2018-07-09

Applicant: Sharp Kabushiki Kaisha ,  Memory-Tech Holdings Inc.

Inventor： Hirohisa YAMADA ,  Takayuki NAKA ,  Masaki YAMAMOTO ,  Yoshihisa ADACHI ,  Hideharu TAJIMA ,  Masahito KONISHI

IPC: G11B7/007 ,  G11B27/30 ,  G11B20/12 ,  G11B7/013 ,  G11B7/24085

CPC classification number: G11B7/0079 ,  G11B7/00736 ,  G11B7/013 ,  G11B7/24085 ,  G11B20/1217 ,  G11B27/3027

Abstract: An optical disk (100) of the present invention includes (i) a medium information region (101) (a) in which type identification information is recorded by recesses and/or protrusions which are formed by a given modulation method and whose lengths are longer than a length of an optical system resolution limit of a playback device and (b) in which first address information is recorded in a first address data format and (ii) a data region (102) (a) in which content data is recorded by recesses and/or protrusions which are formed by the given modulation method and which include a recess and/or a protrusion whose length is shorter than the length of the optical system resolution limit and (b) in which second address information is recorded in a second address data format.

公开(公告)号：US20180240498A1

公开(公告)日：2018-08-23

申请号：US15956904

申请日：2018-04-19

Applicant: Sharp Kabushiki Kaisha ,  Memory-Tech Holdings Inc.

Inventor： Hideharu TAJIMA ,  Masaki YAMAMOTO ,  Hirohisa YAMADA ,  Takayuki NAKA ,  Masahito KONISHI

IPC: G11B20/10 ,  G11B7/005 ,  G11B7/1374 ,  G11B7/13

CPC classification number: G11B20/10314 ,  G11B7/0052 ,  G11B7/0053 ,  G11B7/013 ,  G11B7/13 ,  G11B7/1374 ,  G11B7/13927 ,  G11B2007/0133

Abstract: A reproducing device (100) includes (i) an optical pickup (6) for irradiating, with reproduction light, an optical disk (1) which is a super-resolution medium, (ii) an RF signal processing circuit (9) for converting, into a reproduction signal, light which reflected off optical disk (1), (iii) an i-MLSE detecting section (141) for evaluating quality of the reproduction signal, and (iv) a spherical aberration correcting section (142) for correcting a spherical aberration by using a result of evaluation of the quality of the reproduction signal.

公开(公告)号：US09928868B2

公开(公告)日：2018-03-27

申请号：US15122330

申请日：2015-03-02

Applicant: MEMORY-TECH HOLDINGS, INC.

Inventor： Yoshihiro Takatani ,  Mitsuro Satoh ,  Masayoshi Tsuchiya

IPC: G11B7/24 ,  G11B7/24035 ,  G11B7/24038 ,  G11B20/12 ,  G11B27/32 ,  G11B7/24073 ,  G11B7/007 ,  G11B7/26

CPC classification number: G11B7/24035 ,  G11B7/00736 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/24073 ,  G11B7/26 ,  G11B20/1217 ,  G11B27/329 ,  G11B2007/00709 ,  G11B2007/00754 ,  G11B2020/1227 ,  G11B2020/1238

Abstract: An optical disc including at least three layers of recording layers that each record information in an information track. The recording layer includes: an inner circumferential side region positioned on the inner circumferential side; a data region which is positioned to the outer circumferential side of the inner circumferential side region and records content information; and an outer circumferential side region positioned to the outer circumferential side of the data region. The content information is recorded in the data region of the three or more layers, and a point on an upper layer and a point on a lower layer one layer below the upper layer at which playback switches from content information of the upper layer being played back in an inner circumferential direction to content information of the lower layer, are set to be more to the outside than an innermost circumferential position of the data region.

公开(公告)号：US09767838B2

公开(公告)日：2017-09-19

申请号：US15489811

申请日：2017-04-18

Applicant: Sharp Kabushiki Kaisha ,  Memory-Tech Holdings Inc.

Inventor： Takayuki Naka ,  Hirohisa Yamada ,  Masaki Yamamoto ,  Hideharu Tajima ,  Masahito Konishi

IPC: G11B7/24 ,  G11B7/007 ,  G11B7/1372 ,  G11B7/013 ,  G11B7/24079 ,  G11B7/24085 ,  G11B7/243

CPC classification number: G11B7/007 ,  G11B7/005 ,  G11B7/0052 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/1372 ,  G11B7/24 ,  G11B7/24065 ,  G11B7/24079 ,  G11B7/24085 ,  G11B7/243 ,  G11B2007/0133

Abstract: In a case where (i) a reflectance calculated from a reflected light amount obtained from a longest pit (P1max) or a longest space (S1max) in a first pit row is defined as a first reflectance and (ii) a reflectance calculated from a reflected light amount obtained from a longest pit (P2max) or a longest space (S2max) in the second pit row is defined as a second reflectance, the first pit row is formed such that the first reflectance becomes substantially identical with the second reflectance.

公开(公告)号：US09552838B2

公开(公告)日：2017-01-24

申请号：US15200049

申请日：2016-07-01

Applicant: Sharp Kabushiki Kaisha ,  Memory-Tech Holdings Inc.

Inventor： Takayuki Naka ,  Hirohisa Yamada ,  Masaki Yamamoto ,  Hideharu Tajima ,  Masahito Konishi

IPC: G11B7/24 ,  G11B7/013 ,  G11B7/24079 ,  G11B7/007 ,  G11B7/24085 ,  G11B7/005

CPC classification number: G11B7/007 ,  G11B7/005 ,  G11B7/0052 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/1372 ,  G11B7/24 ,  G11B7/24065 ,  G11B7/24079 ,  G11B7/24085 ,  G11B7/243 ,  G11B2007/0133

Abstract: In a case where (i) a reflectance calculated from a reflected light amount obtained from a longest pit (P1max) or a longest space (S1max) in a first pit row is defined as a first reflectance and (ii) a reflectance calculated from a reflected light amount obtained from a longest pit (P2max) or a longest space (S2max) in the second pit row is defined as a second reflectance, the first pit row is formed such that the first reflectance becomes substantially identical with the second reflectance.

Abstract translation: 在（i）将从第一凹坑行中的最长凹坑（P1max）或最长空间（S1max）获得的反射光量计算出的反射率定义为第一反射率的情况下，（ii）从 将从第二凹坑行中的最长凹坑（P2max）或最长空间（S2max）获得的反射光量定义为第二反射率，第一凹坑行形成为使得第一反射率与第二反射率基本相同。

公开(公告)号：US20160155469A1

公开(公告)日：2016-06-02

申请号：US14902941

申请日：2014-04-08

Applicant: SHARP KABUSHIKI KAISHA ,  MEMORY-TECH HOLDINGS INC.

Inventor： Hideharu TAJIMA ,  Masaki YAMAMOTO ,  Hirohisa YAMADA ,  Takayuki NAKA ,  Masahito KONISHI

IPC: G11B20/10 ,  G11B7/013 ,  G11B7/005

CPC classification number: G11B20/10314 ,  G11B7/0052 ,  G11B7/0053 ,  G11B7/013 ,  G11B7/13 ,  G11B7/1374 ,  G11B7/13927 ,  G11B2007/0133

Abstract: A reproducing device (100) includes (i) an optical pickup (6) for irradiating, with reproduction light, an optical disk (1) which is a super-resolution medium, (ii) an RF signal processing circuit (9) for converting, into a reproduction signal, light which reflected off optical disk (1), (iii) an i-MLSE detecting section (141) for evaluating quality of the reproduction signal, and (iv) a spherical aberration correcting section (142) for correcting a spherical aberration by using a result of evaluation of the quality of the reproduction signal.

Abstract translation: 一种再现装置（100）包括：（i）用于以再现光照射作为超分辨率介质的光盘（1）的光学拾取器（6），（ii）用于转换的RF信号处理电路 （1）反射的光，（iii）用于评估再现信号的质量的i-MLSE检测部分（141），以及（iv）用于校正的球面像差校正部分（142） 通过使用再现信号的质量的评估结果的球面像差。

公开(公告)号：US09697863B2

公开(公告)日：2017-07-04

申请号：US14917992

申请日：2014-04-08

Applicant: Sharp Kabushiki Kaisha ,  Memory-Tech Holdings Inc.

Inventor： Hirohisa Yamada ,  Takayuki Naka ,  Masaki Yamamoto ,  Yoshihisa Adachi ,  Hideharu Tajima ,  Masahito Konishi

IPC: G11B7/0045 ,  G11B7/007 ,  G11B20/12 ,  G11B27/30 ,  G11B7/24085 ,  G11B7/013

CPC classification number: G11B7/0079 ,  G11B7/00736 ,  G11B7/013 ,  G11B7/24085 ,  G11B20/1217 ,  G11B27/3027

Abstract: An optical disk (100) of the present invention includes (i) a medium information region (101) (a) in which type identification information is recorded by recesses and/or protrusions which are formed by a given modulation method and whose lengths are longer than a length of an optical system resolution limit of a playback device and (b) in which first address information is recorded in a first address data format and (ii) a data region (102) (a) in which content data is recorded by recesses and/or protrusions which are formed by the given modulation method and which include a recess and/or a protrusion whose length is shorter than the length of the optical system resolution limit and (b) in which second address information is recorded in a second address data format.

公开(公告)号：US09666222B2

公开(公告)日：2017-05-30

申请号：US15369916

申请日：2016-12-06

Applicant: Sharp Kabushiki Kaisha ,  Memory-Tech Holdings Inc.

Inventor： Takayuki Naka ,  Hirohisa Yamada ,  Masaki Yamamoto ,  Hideharu Tajima ,  Masahito Konishi

IPC: G11B7/24 ,  G11B7/013 ,  G11B7/005 ,  G11B7/24085 ,  G11B7/24079 ,  G11B7/007

CPC classification number: G11B7/007 ,  G11B7/005 ,  G11B7/0052 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/1372 ,  G11B7/24 ,  G11B7/24065 ,  G11B7/24079 ,  G11B7/24085 ,  G11B7/243 ,  G11B2007/0133

Abstract: In a case where (i) a reflectance calculated from a reflected light amount obtained from a longest pit (P1max) or a longest space (S1max) in a first pit row is defined as a first reflectance and (ii) a reflectance calculated from a reflected light amount obtained from a longest pit (P2max) or a longest space (S2max) in the second pit row is defined as a second reflectance, the first pit row is formed such that the first reflectance becomes substantially identical with the second reflectance.