公开(公告)号：US20180268857A1

公开(公告)日：2018-09-20

申请号：US15983568

申请日：2018-05-18

Applicant: Mitsubishi Electric Corporation

Inventor： Hironori NAKAHARA ,  Nobuo TAKESHITA ,  Masaharu OGAWA

IPC: G11B7/2403 ,  G11B7/135 ,  G11B7/13 ,  G11B7/127

CPC classification number: G11B7/2403 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/08511 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135 ,  G11B7/1392 ,  G11B7/24038 ,  G11B7/24041 ,  G11B20/1217 ,  G11B20/1262 ,  G11B2007/0013 ,  G11B2020/1227

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

公开(公告)号：US10002634B2

公开(公告)日：2018-06-19

申请号：US15633938

申请日：2017-06-27

Applicant: Mitsubishi Electric Corporation

Inventor： Hironori Nakahara ,  Nobuo Takeshita ,  Masaharu Ogawa

IPC: G11B7/24 ,  G11B7/2403 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135

CPC classification number: G11B7/2403 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/08511 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135 ,  G11B7/1392 ,  G11B7/24038 ,  G11B7/24041 ,  G11B20/1217 ,  G11B20/1262 ,  G11B2007/0013 ,  G11B2020/1227

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

公开(公告)号：US09741387B2

公开(公告)日：2017-08-22

申请号：US14831155

申请日：2015-08-20

Applicant: Mitsubishi Electric Corporation

Inventor： Hironori Nakahara ,  Nobuo Takeshita ,  Masaharu Ogawa

IPC: G11B7/00 ,  G11B7/24 ,  G11B7/24041 ,  G11B7/007 ,  G11B7/1392 ,  G11B7/13 ,  G11B7/013 ,  G11B7/24038 ,  G11B20/12 ,  G11B7/085

CPC classification number: G11B7/2403 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/08511 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135 ,  G11B7/1392 ,  G11B7/24038 ,  G11B7/24041 ,  G11B20/1217 ,  G11B20/1262 ,  G11B2007/0013 ,  G11B2020/1227

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

公开(公告)号：US09373352B2

公开(公告)日：2016-06-21

申请号：US14649327

申请日：2012-12-10

Applicant: Hitachi Consumer Electronics Co., Ltd.

Inventor： Makoto Hosaka

IPC: G11B7/0065 ,  G11B7/135 ,  G02B26/10 ,  G11B7/1392 ,  G11B7/1353 ,  G11B7/1365 ,  G11B7/1381 ,  G11B7/1395 ,  G02B27/28 ,  G03H1/26 ,  G11B7/1362 ,  G11B7/08 ,  G03H1/22 ,  G11B7/085

CPC classification number: G11B7/1392 ,  G02B27/283 ,  G03H1/2286 ,  G03H1/265 ,  G11B7/0065 ,  G11B7/083 ,  G11B7/08564 ,  G11B7/135 ,  G11B7/1353 ,  G11B7/1362 ,  G11B7/1365 ,  G11B7/1381 ,  G11B7/1395

Abstract: An optical information reproduction apparatus using holography can appropriately correct an angle and a wavelength of a reference beam in a direction perpendicular to multiplexing while data is reproduced. In the optical information reproduction apparatus which reproduces information from an optical information recording medium by using holography, an angular error signal in the direction perpendicular to multiplexing of the reference beam is generated by using a signal detected by a light detecting unit. A perpendicular angle adjustment element adjusts an angle of the reference beam in the direction perpendicular to multiplexing, based on the angular error signal. A wavelength error signal is generated from a signal detected by the light detecting unit, and a wavelength is adjusted based on the wavelength error signal.

Abstract translation: 使用全息术的光学信息再现装置可以在再现数据的同时，在垂直于多路复用的方向上适当地校正参考光束的角度和波长。 在通过使用全息术从光学信息记录介质再现信息的光学信息再现设备中，通过使用由光检测单元检测的信号来产生垂直于参考光束的多路复用方向的角度误差信号。 基于角度误差信号，垂直角度调整元件在垂直于多路复用的方向上调整参考光束的角度。 从由光检测单元检测的信号产生波长误差信号，并且基于波长误差信号调整波长。

公开(公告)号：US08824257B2

公开(公告)日：2014-09-02

申请号：US14063272

申请日：2013-10-25

Applicant: Mitsubishi Electric Corporation

Inventor： Hironori Nakahara ,  Nobuo Takeshita ,  Masaharu Ogawa

IPC: G11B7/00 ,  G11B7/24 ,  G11B7/007 ,  G11B7/013 ,  G11B7/24038 ,  G11B7/085

CPC classification number: G11B7/2403 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/08511 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135 ,  G11B7/1392 ,  G11B7/24038 ,  G11B7/24041 ,  G11B20/1217 ,  G11B20/1262 ,  G11B2007/0013 ,  G11B2020/1227

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

公开(公告)号：US20140071800A1

公开(公告)日：2014-03-13

申请号：US14063272

申请日：2013-10-25

Applicant: Mitsubishi Electric Corporation

Inventor： Hironori NAKAHARA ,  Nobuo TAKESHITA ,  Masaharu OGAWA

IPC: G11B7/007

CPC classification number: G11B7/2403 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/08511 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135 ,  G11B7/1392 ,  G11B7/24038 ,  G11B7/24041 ,  G11B20/1217 ,  G11B20/1262 ,  G11B2007/0013 ,  G11B2020/1227

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

公开(公告)号：US20140050073A1

公开(公告)日：2014-02-20

申请号：US14063826

申请日：2013-10-25

Applicant: Mitsubishi Electric Corporation

Inventor： Hironori NAKAHARA ,  Nobuo TAKESHITA ,  Masaharu OGAWA

IPC: G11B7/007

CPC classification number: G11B7/2403 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/08511 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135 ,  G11B7/1392 ,  G11B7/24038 ,  G11B7/24041 ,  G11B20/1217 ,  G11B20/1262 ,  G11B2007/0013 ,  G11B2020/1227

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

公开(公告)号：US20140050071A1

公开(公告)日：2014-02-20

申请号：US14063487

申请日：2013-10-25

Applicant: Mitsubishi Electric Corporation

Inventor： Hironori NAKAHARA ,  Nobuo TAKESHITA ,  Masaharu OGAWA

IPC: G11B7/013

CPC classification number: G11B7/2403 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/08511 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135 ,  G11B7/1392 ,  G11B7/24038 ,  G11B7/24041 ,  G11B20/1217 ,  G11B20/1262 ,  G11B2007/0013 ,  G11B2020/1227

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

公开(公告)号：US20140050070A1

公开(公告)日：2014-02-20

申请号：US14063240

申请日：2013-10-25

Applicant: Mitsubishi Electric Corporation

Inventor： Hironori NAKAHARA ,  Nobuo TAKESHITA ,  Masaharu OGAWA

IPC: G11B7/007

CPC classification number: G11B7/2403 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/08511 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135 ,  G11B7/1392 ,  G11B7/24038 ,  G11B7/24041 ,  G11B20/1217 ,  G11B20/1262 ,  G11B2007/0013 ,  G11B2020/1227

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

公开(公告)号：US20140050065A1

公开(公告)日：2014-02-20

申请号：US14063987

申请日：2013-10-25

Applicant: Mitsubishi Electric Corporation

Inventor： Hironori NAKAHARA ,  Nobuo TAKESHITA ,  Masaharu OGAWA

IPC: G11B7/007

CPC classification number: G11B7/2403 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/08511 ,  G11B7/127 ,  G11B7/13 ,  G11B7/135 ,  G11B7/1392 ,  G11B7/24038 ,  G11B7/24041 ,  G11B20/1217 ,  G11B20/1262 ,  G11B2007/0013 ,  G11B2020/1227

Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.