公开(公告)号：EP3023986A1

公开(公告)日：2016-05-25

申请号：EP14825639.9

申请日：2014-04-08

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

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

IPC: G11B7/126 ,  G11B7/005 ,  G11B7/1392

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（141），以及（iv）用于校正的像差校正部（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：EP2518725A4

公开(公告)日：2014-10-08

申请号：EP10838924

申请日：2010-12-17

Applicant: PANASONIC CORP

Inventor： NAKASENDO TSUYOSHI ,  YAMAOKA MASARU ,  TAKAGI YUJI ,  USUI MAKOTO

IPC: G11B7/0045 ,  G11B7/007 ,  G11B7/126 ,  G11B19/26 ,  G11B20/00 ,  G11B20/10

CPC classification number: G11B20/10009 ,  G11B7/0045 ,  G11B7/00736 ,  G11B19/26 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00594 ,  G11B20/10027 ,  G11B20/1024 ,  G11B2220/2541 ,  G11B2220/2562

公开(公告)号：EP2256727B1

公开(公告)日：2014-08-13

申请号：EP10177234.1

申请日：2007-05-29

Applicant: Kabushiki Kaisha Toshiba

Inventor： Umezawa, Kazuyo ,  Morita, Seiji ,  Takazawa, Koji ,  Ando, Hideo ,  Ootera, Yasuaki ,  Nakamura, Naomasa ,  Morishita, Naoki

IPC: G11B7/126 ,  G11B7/00 ,  G11B7/007

CPC classification number: G11B7/00736 ,  G11B7/126 ,  G11B2007/0013

公开(公告)号：EP3023986A4

公开(公告)日：2016-08-03

申请号：EP14825639

申请日：2014-04-08

Applicant: SHARP KK ,  MEMORY TECH HOLDINGS INC

Inventor： TAJIMA HIDEHARU ,  YAMAMOTO MASAKI ,  YAMADA HIROHISA ,  NAKA TAKAYUKI ,  KONISHI MASAHITO

IPC: G11B7/126 ,  G11B7/005 ,  G11B7/1392

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：EP1615216A3

公开(公告)日：2012-12-26

申请号：EP05019105.5

申请日：2000-05-22

Applicant: Pioneer Corporation

Inventor： Kuroda, Kazuo Pioneer Corp.

IPC: G11B20/00 ,  G11B20/12 ,  G11B19/04 ,  G11B7/007 ,  G11B7/126 ,  G11B7/26

CPC classification number: G11B7/00736 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/126 ,  G11B7/24082 ,  G11B7/261 ,  G11B7/263 ,  G11B19/04 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00326 ,  G11B20/00586 ,  G11B20/0092 ,  G11B20/1217 ,  G11B20/1833 ,  G11B2020/1259 ,  G11B2020/1285

Abstract: On an information record medium (10, 11), record information can be recorded one time or a plurality of times by a predetermined record format. An apparatus for manufacturing the information record medium by using a stamper (27, 28) is provided with an embossed pit array forming device (20 to 26, 50) for forming on the stamper as an embossed pit array, pre-record data (SFi) which is a predetermined data row to disable overwriting on the record information in a pre-record area, which is set in advance in a range including an area (13c) assigned to information required to control a reproduction of the record information, which is recorded by the predetermined record format.

公开(公告)号：EP1117094B1

公开(公告)日：2012-11-21

申请号：EP01100223.5

申请日：2001-01-02

Applicant: Mitsubishi Kagaku Media Co., Ltd.

Inventor： Ohno, Takashi, c/o Yokohama Research Center

IPC: G11B7/006 ,  G11B7/126 ,  G11B7/243

CPC classification number: G11B7/0062 ,  G11B7/00454 ,  G11B7/006 ,  G11B7/126 ,  G11B7/243 ,  G11B2007/0013 ,  G11B2007/24314 ,  G11B2007/24316

Abstract: In a recording method for a rewritable optical recording medium, immediately before a prospective leading pulse (1) that is a time section where recording light of write power Pw irradiates a phase-change recording layer for the first time as a front low-power energy irradiating step, light of bias power Pb irradiates the phase-change recording layer for a first set time length yT as a preceding low-power energy irradiation step. And immediately after the leading pulse (1), the light of bias power Pb irradiates the phase-change recording layer for a set time length xT as a succeeding low-power energy irradiation step. The relation between x and y satisfies : 0.95 ‰¦ x+0.7ˆ—y ‰¦ 2.5. The high-power energy beam irradiates the recording medium in such a manner that a period of irradiation for pulses subsequent to the leading pulse (1) is in a range of from 0.5T to 2.5T. The result is that it is possible to facilitate forming/erasing amorphous marks even in a phase-change recording medium devoid of a reflective layer, without any risk of narrowing the range of effective crystallization speeds.

公开(公告)号：EP3872810A1

公开(公告)日：2021-09-01

申请号：EP21169499.7

申请日：2014-04-08

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

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

IPC: G11B7/126 ,  G11B7/005 ,  G11B7/1392

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：EP2398018B1

公开(公告)日：2019-04-03

申请号：EP10741429.4

申请日：2010-02-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： HWANG, Sung-Hee ,  HWANG, In-Oh ,  KO, Jung-Wan ,  LEE, Kyung-Geun

IPC: G11B7/007 ,  G11B7/125 ,  G11B7/004 ,  G11B20/12 ,  G11B7/00 ,  G11B7/126 ,  G11B20/18

公开(公告)号：EP2662858A4

公开(公告)日：2017-01-25

申请号：EP12732293

申请日：2012-01-06

Applicant: MITSUBISHI ELECTRIC CORP

Inventor： NAKAI KENYA ,  OMAKI MASAYUKI

IPC: G11B7/1263 ,  G11B7/005 ,  G11B7/007 ,  G11B7/126 ,  G11B7/1267 ,  G11B7/1392

CPC classification number: G11B7/1263 ,  G11B7/1376 ,  G11B7/24065 ,  G11B7/268 ,  G11B2007/0006 ,  G11B2007/0013

公开(公告)号：EP1475784B1

公开(公告)日：2014-12-24

申请号：EP03705130.7

申请日：2003-02-13

Applicant: Mitsubishi Kagaku Media Co., Ltd.

Inventor： OHNO, Takashi, c/o Mitsubishi Chemical Corp. ,  KUBO, Masae, c/o Mitsubishi Chemical Corp. ,  HORIE, Michikazu, c/o Mitsubishi Chemical Corp. ,  MIZUNO, Masaaki, c/o Mitsubishi Chemical Corp. ,  HOSHINO, Hiroyuki, c/o Mitsubishi Chemical Corp. ,  OKAMURO, Akio, c/o Mitsubishi Chem. Media Co., Ltd

IPC: G11B7/006 ,  G11B7/243 ,  G11B7/259 ,  G11B7/26 ,  G11B7/126 ,  G11B7/0045

CPC classification number: G11B7/243 ,  G11B7/0045 ,  G11B7/00454 ,  G11B7/0062 ,  G11B7/126 ,  G11B7/24 ,  G11B7/259 ,  G11B7/26 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  Y10T428/21

Abstract: The present invention provides CD-RW which makes high velocity recording at a level of at least 24-times velocity possible, rewritable DVD which makes high velocity recording at a level of at least 6-times velocity possible, and a recording method therefor, while maintaining interchangeability with conventional CD-RW standards and rewritable DVD standards. A rewritable optical recording medium comprising a substrate and a phase-change type recording layer, wherein a portion in a crystalline state corresponds to an unrecorded or erased state, and a portion in an amorphous state correspond to a recorded state, to record EFM modulated information by forming amorphous marks by irradiating the recording layer with a recording laser beam, and wherein recording is carried out by irradiating a recording laser beam having a wavelength of about 780 nm through an optical system having a numerical aperture NA of 0.5 or 0.55, at 24-times velocity or 32-times velocity of the reference velocity, where the reference velocity (1-time velocity) is a linear velocity of from 1.2 m/s to 1.4 m/s, modulation m11 of record signals is from 60% to 80%, the top value Rtop of the reflectivity of the high pattern is from 15% to 25%, and jitters are at most 35 nsec.