公开(公告)号：US09064506B2

公开(公告)日：2015-06-23

申请号：US13618173

申请日：2012-09-14

Applicant: Hideaki Okano ,  Kazuo Watabe ,  Chikara Tanioka ,  Akihito Ogawa ,  Takashi Usui ,  Kazuaki Doi

Inventor： Hideaki Okano ,  Kazuo Watabe ,  Chikara Tanioka ,  Akihito Ogawa ,  Takashi Usui ,  Kazuaki Doi

IPC: G11B7/09 ,  G11B7/095 ,  G11B7/00

CPC classification number: G11B7/0956 ,  G11B7/0901 ,  G11B7/0938 ,  G11B2007/0013

Abstract: According to one embodiment, an information recording and reproducing apparatus including, a focus control module, an objective lens control module, a calculation module, and a tracking control module. If, detection the recording marks line, to focus a laser light of a second wavelength to the recording layer through an objective lens and to operation a recording layer tracking control using a tracking error signal taken out from a second reflected light and a laser light of a first wavelength to a track groove through the objective lens and to operation a guide layer tracking control to control the objective lens using a tracking error signal taken out from a first reflected light.

Abstract translation: 根据一个实施例，一种信息记录和再现装置，包括聚焦控制模块，物镜控制模块，计算模块和跟踪控制模块。 如果检测记录标记线，则通过物镜将第二波长的激光聚焦到记录层，并且使用从第二反射光和第二反射光的激光中取出的跟踪误差信号来操作记录层跟踪控制 通过物镜的轨道槽的第一波长，并且使用从第一反射光取出的跟踪误差信号来操作引导层跟踪控制来控制物镜。

公开(公告)号：US20130094343A1

公开(公告)日：2013-04-18

申请号：US13688805

申请日：2012-11-29

Applicant: Akihito OGAWA ,  Kazuo Watabe ,  Chikara Tanioka ,  Hideaki Okano ,  Takashi Usui ,  Kazuaki Doi

Inventor： Akihito OGAWA ,  Kazuo Watabe ,  Chikara Tanioka ,  Hideaki Okano ,  Takashi Usui ,  Kazuaki Doi

IPC: G11B23/00

CPC classification number: G11B23/0035 ,  G11B7/00736 ,  G11B7/1267 ,  G11B7/24038 ,  G11B7/2405 ,  G11B7/24073 ,  G11B7/24082 ,  G11B20/1217 ,  G11B2020/1227 ,  G11B2020/1268 ,  G11B2220/235 ,  G11B2220/2537

Abstract: According to one embodiment, an information recording medium characterized by including, a first servo layer, a second servo layer, and a data layer, the information recording medium further including, a first spiral track and a second spiral track formed between the first servo layer and the second servo layer and spiraling in opposite directions.

Abstract translation: 根据一个实施例，一种信息记录介质，其特征在于包括第一伺服层，第二伺服层和数据层，所述信息记录介质还包括第一螺旋磁道和形成在第一伺服层 和第二伺服层，螺旋方向相反。

公开(公告)号：US20120294130A1

公开(公告)日：2012-11-22

申请号：US13478441

申请日：2012-05-23

Applicant: Kazuo Watabe ,  Akihito Ogawa ,  Hideaki Okano ,  Takashi Usui

Inventor： Kazuo Watabe ,  Akihito Ogawa ,  Hideaki Okano ,  Takashi Usui

IPC: G11B21/02 ,  G11B7/1359 ,  G11B7/1353

CPC classification number: G11B7/0065 ,  G03H1/265 ,  G03H2001/2234 ,  G11B7/00781 ,  G11B7/083 ,  G11B7/1359 ,  G11B7/1395

Abstract: According to one embodiment, a data storage device includes a data recording medium, a light source, and following units. The light application unit splits the laser beam from the light source, and applies the first and second light beams to the data recording medium from different directions. The light detection unit detects reflected light beams from the data recording medium. The light deflection unit deflects the reflected light beams to direct the reflected light beams to the light detection unit. The arithmetic unit calculates positional error information based on the detection signal. The drive unit displaces a position and a posture of the data recording medium based on the positional error information.

Abstract translation: 根据一个实施例，数据存储设备包括数据记录介质，光源和后续单元。 光施加单元将来自光源的激光束分离，并且将第一和第二光束从不同方向施加到数据记录介质。 光检测单元检测来自数据记录介质的反射光束。 光偏转单元偏转反射光束以将反射光束引导到光检测单元。 算术单元基于检测信号来计算位置误差信息。 驱动单元基于位置误差信息移位数据记录介质的位置和姿势。

公开(公告)号：US20120224462A1

公开(公告)日：2012-09-06

申请号：US13410649

申请日：2012-03-02

Applicant: Kazuo Watabe ,  Hideaki Okano ,  Takashi Usui ,  Chikara Tanioka ,  Akihito Ogawa ,  Kazuaki Doi

Inventor： Kazuo Watabe ,  Hideaki Okano ,  Takashi Usui ,  Chikara Tanioka ,  Akihito Ogawa ,  Kazuaki Doi

IPC: G11B7/09 ,  G11B7/085

CPC classification number: G11B7/14 ,  G11B7/0045 ,  G11B7/126 ,  G11B7/1376 ,  G11B7/24038 ,  G11B7/2405

Abstract: According to one embodiment, a pickup head includes a plurality of light sources, a first objective lens, second objective lens, a driving unit, a first control unit, a second control unit, light receiving units. The first objective lens focuses a first light beam at a first recording layer. The second objective lens focuses a second light beam at a second recording layer. The driving unit moves the first objective lens and the second objective lens in a first direction and a second direction. The first control unit corrects displacement from target track along the first direction. The second control unit controls a moving direction of a position of the second light spot in the second direction.

Abstract translation: 根据一个实施例，拾取头包括多个光源，第一物镜，第二物镜，驱动单元，第一控制单元，第二控制单元，光接收单元。 第一物镜将第一光束聚焦在第一记录层。 第二物镜将第二光束聚焦在第二记录层。 驱动单元沿第一方向和第二方向移动第一物镜和第二物镜。 第一控制单元沿着第一方向校正与目标轨迹的位移。 第二控制单元控制第二光点在第二方向上的位置的移动方向。

公开(公告)号：US07949071B2

公开(公告)日：2011-05-24

申请号：US12626338

申请日：2009-11-25

Applicant: Yuji Nagai ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

Inventor： Yuji Nagai ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

IPC: H03C1/52 ,  G06K9/00

CPC classification number: G11B20/14 ,  G11B20/0021 ,  G11B20/00579 ,  G11B20/00884 ,  G11B20/1426 ,  G11B2020/1457

Abstract: According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator amplitude-modulates with σ/(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ2, a number of the encoded sub-information units is N, signal levels after amplitude modulation, which correspond to bit 1 and bit 0 of the encoded sub-information units, are A and B, and a level difference A−B is μ.

Abstract translation: 根据一个实施例，第一编码器对主信息进行编码，第二编码器对子信息进行编码，第一调制器基于第一编码器的输出调制载波，复制模块复制第二编码器的输出， 信息单元和第二调制器基于编码的子信息单元对第一调制器的输出进行幅度调制。 第二调制器以＆sgr; /（μ×（2N）1/2）振幅调制为0.4或更小，其中传输路径或存储介质的噪声功率为2，编码子信息的数量 单位为N，对应于编码子信息单元的位1和位0的幅度调制后的信号电平为A和B，电平差A-B为μ。

公开(公告)号：US07835256B2

公开(公告)日：2010-11-16

申请号：US11519527

申请日：2006-09-12

Applicant: Yutaka Yamanaka ,  Shuichi Ohkubo ,  Kazuo Watabe ,  Yutaka Kashihara ,  Akihito Ogawa

Inventor： Yutaka Yamanaka ,  Shuichi Ohkubo ,  Kazuo Watabe ,  Yutaka Kashihara ,  Akihito Ogawa

IPC: G11B7/24

CPC classification number: G11B7/00736 ,  G11B7/24038

Abstract: A two-layer recording type optical disk capable of realizing stable recording and reproduction without being affected by another recording layer and an optical disk apparatus for the two-layer recording type optical disk are provided. In layouts of various areas in the optical disk, a position where a border between a recorded part and an unrecorded part is formed on one recording layer is set so that the position is always separated from a position where a border between a recorded part and an unrecorded part is formed on another recording layer by a predetermined clearance amount. Moreover, to a recording layer farther from an incident surface, test recording or data recording is always performed through a recorded part on a closer recording layer.

Abstract translation: 提供能够实现稳定的记录和再现而不受另一记录层的影响的双层记录型光盘和用于双层记录型光盘的光盘装置。 在光盘中的各个区域的布局中，设置记录部分和未记录部分之间的边界形成在一个记录层上的位置，使得位置总是与记录部分和记录部分之间的边界的位置分离 未记录部分在另一记录层上形成预定间隙量。 此外，对于距离入射面更远的记录层，总是通过更靠近记录层上的记录部分进行测试记录或数据记录。

公开(公告)号：US20090207721A1

公开(公告)日：2009-08-20

申请号：US12371443

申请日：2009-02-13

Applicant: Morio Nakatani ,  Masato Fuma ,  Kazuo Watabe ,  Yutaka Kashihara ,  Akihito Ogawa ,  Yutaka Yamanaka ,  Tatsunori Ide ,  Shuichi Ohkubo

Inventor： Morio Nakatani ,  Masato Fuma ,  Kazuo Watabe ,  Yutaka Kashihara ,  Akihito Ogawa ,  Yutaka Yamanaka ,  Tatsunori Ide ,  Shuichi Ohkubo

IPC: G11B7/00

CPC classification number: G11B7/00736 ,  G11B7/0045 ,  G11B19/12 ,  G11B19/14 ,  G11B19/28 ,  G11B20/1217 ,  G11B20/1258 ,  G11B20/1816 ,  G11B2020/10981 ,  G11B2020/122 ,  G11B2020/1239 ,  G11B2020/1242 ,  G11B2020/1245 ,  G11B2020/1267 ,  G11B2220/2541 ,  G11B2220/2579

Abstract: An optical disc has a read-only system lead-in area and a recordable data area. Disc boundary information representing a boundary in a radial direction of an area on which capability of recording at a predetermined recording speed is guaranteed is recorded on the system lead-in area while being related to each tuple speed. An optical disc device, upon user's instruction of tuple-speed recording, compares the boundary information related to the instructed tuple speed with a present recording position, performs recording at the instructed tuple speed if the present recording position is on the outside of the boundary, and performs recording at a tuple speed lower than the instructed tuple speed if the present recording position is on the inside of the boundary.

Abstract translation: 光盘具有只读系统导入区和可记录数据区。 表示在保证以预定记录速度记录的能力的区域的径向方向上的边界的光盘边界信息被记录在系统导入区域上，同时与每个元组速度有关。 光盘装置根据用户的元组速度记录指令，将与指示的元组速度相关的边界信息与当前记录位置进行比较，如果当前记录位置在边界外侧，则以指示的元组速度进行记录， 并且如果当前记录位置在边界的内侧上，则以低于指示的元组速度的元组速度执行记录。

公开(公告)号：US20090109815A1

公开(公告)日：2009-04-30

申请号：US12260920

申请日：2008-10-29

Applicant: Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

Inventor： Takashi Usui ,  Kazuo Watabe ,  Keiichiro Yusu ,  Chosaku Noda ,  Kazuto Kuroda ,  Nobuaki Kaji ,  Masahiro Saito

IPC: G11B7/00

CPC classification number: G11B7/00456 ,  G11B7/1267

Abstract: According to one embodiment, an optical disc device includes a light source portion which applies laser light to an optical disc, a drive portion which supplies a drive current to the light source portion so as to cause the light source portion to apply laser light of light pulses having relaxation oscillation, and a controller which controls the drive portion to supply a drive current so as to cause the light source portion to emit laser light of (n−1)×N (N is an integral number) light pulses having relaxation oscillation with respect to a mark with recording mark length nT (n: integral number, T: channel clock) to be recorded on the optical disc.

Abstract translation: 根据一个实施例，光盘装置包括向光盘施加激光的光源部分，向光源部分提供驱动电流以使光源部分施加光的激光的驱动部分 具有弛豫振荡的脉冲和控制驱动部分提供驱动电流以使光源部分发出具有弛豫振荡的（n-1）×N（N为整数）光脉冲的激光的控制器， 相对于要记录在光盘上的具有记录标记长度nT（n：整数，T：通道时钟）的标记。

公开(公告)号：US20090109808A1

公开(公告)日：2009-04-30

申请号：US12208658

申请日：2008-09-11

Applicant: Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yasu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

Inventor： Nobuaki Kaji ,  Kazuo Watabe ,  Takashi Usui ,  Keiichiro Yasu ,  Chosaku Noda ,  Kazuto Kuroda ,  Masahiro Saito

IPC: G11B7/00

CPC classification number: G11B7/126 ,  H01S5/0428

Abstract: According to one embodiment, a laser drive circuit which supplies a drive current to a laser element which outputs light at a predetermined wavelength, and a laser control circuit which supplies a predetermined timing pulse for generation of relaxation oscillation in a laser drive current supplied to the laser drive circuit, the laser control circuit supplying a laser drive current higher than a threshold value which is supplied from the laser drive circuit to the laser element to enable laser light to be output from the laser element, the laser control circuit setting the laser drive current to a level lower than the threshold value on the basis of the timing pulse.

Abstract translation: 根据一个实施例，提供驱动电流到激光元件的激光驱动电路，激光元件输出预定波长的光;以及激光控制电路，其提供预定的定时脉冲，以产生提供给 激光驱动电路，激光控制电路提供高于从激光驱动电路提供给激光元件的阈值的激光驱动电流，以使激光能够从激光元件输出，激光控制电路设置激光驱动 基于定时脉冲将电流电流降至低于阈值的电平。

公开(公告)号：US20080304401A1

公开(公告)日：2008-12-11

申请号：US11969732

申请日：2008-01-04

Applicant: Hideo Ando ,  Hisashi Yamada ,  Seiji Morita ,  Koji Takazawa ,  Naomasa Nakamura ,  Kazuo Watabe ,  Nobuaki Kaji ,  Masahiko Mawatari ,  Nobuhisa Yoshida ,  Koichi Nagai

Inventor： Hideo Ando ,  Hisashi Yamada ,  Seiji Morita ,  Koji Takazawa ,  Naomasa Nakamura ,  Kazuo Watabe ,  Nobuaki Kaji ,  Masahiko Mawatari ,  Nobuhisa Yoshida ,  Koichi Nagai

IPC: G11B3/70

CPC classification number: G11B7/24079 ,  G11B7/00736 ,  G11B7/00745 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00224 ,  G11B20/00253 ,  G11B20/00449 ,  G11B20/00492 ,  G11B20/00869 ,  G11B2220/215 ,  G11B2220/2562

Abstract: According to one embodiment, an optical information recording medium includes pre-grooves with an irregular shape and lands each of which is sandwiched between the pre-grooves adjacent to each other, where the pre-grooves and lands are defined on an interface between a recording layer and a light reflection layer in a recording film, where the recording film includes a light reflectivity that enables reproduction with light of 650±5 nm, the recording layer includes a recording sensitivity with respect to light by a wavelength shorter than 650±5 nm, and a recording mark can be formed on the pre-groove by using light with a wavelength shorter than 650±5 nm.

Abstract translation: 根据一个实施例，光学信息记录介质包括具有不规则形状的预凹槽，每个凹槽被夹在彼此相邻的预凹槽之间，其中预凹槽和凹槽被界定在记录 层和光反射层，其中记录膜包括能够以650±5nm的光再现的光反射率，记录层包括相对于光的记录灵敏度小于650±5nm的波长 并且可以通过使用波长短于650±5nm的光，在预制槽上形成记录标记。