公开(公告)号：US09286929B2

公开(公告)日：2016-03-15

申请号：US12570106

申请日：2009-09-30

Applicant: Harukazu Miyamoto ,  Koichi Watanabe ,  Yutaka Nagai ,  Koichiro Nishimura ,  Takakiyo Yasukawa

Inventor： Harukazu Miyamoto ,  Koichi Watanabe ,  Yutaka Nagai ,  Koichiro Nishimura ,  Takakiyo Yasukawa

IPC: G11B7/007 ,  G11B7/1267 ,  G11B7/24038 ,  G11B7/00

CPC classification number: G11B7/00736 ,  G11B7/1267 ,  G11B7/24038 ,  G11B2007/0013

Abstract: A method for performing recording on a multilayered optical disk which has three or more recordable or rewritable information recording layers with a first recording layer and a second recording layer located nearer to a light incident surface than the first recording layer, and which respectively has a first test area configured by a plurality of segments in the first recording layer and in the second recording layer, wherein a predetermined radial distance L is defined beforehand. When an arbitrary segment in the second test area is test-recorded, a segment in the first test area, the radial distance of which from the recorded test area in the second test area is within the range of the predetermined radial distance L, is set as a segment in which test recording is not performed.

Abstract translation: 一种用于在具有三个或更多个可记录或可重写信息记录层的多层光盘上执行记录的方法，所述信息记录层具有位于比第一记录层更靠近光入射表面的第一记录层和第二记录层，并且分别具有第一 测试区域由第一记录层和第二记录层中的多个段构成，其中预先定义预定的径向距离L. 当对第二测试区域中的任意段进行测试记录时，将第一测试区域中与第二测试区域中记录的测试区域的径向距离设置在预定的径向距离L的范围内的段被设置 作为不执行测试记录的段。

公开(公告)号：US08752446B2

公开(公告)日：2014-06-17

申请号：US13058124

申请日：2010-08-25

Applicant: Kazuhito Yamamoto ,  Junji Minakuchi ,  Yutaka Nagai ,  Masahiro Nobutomo

Inventor： Kazuhito Yamamoto ,  Junji Minakuchi ,  Yutaka Nagai ,  Masahiro Nobutomo

IPC: F16H1/20 ,  F16H1/24 ,  F16H55/02

CPC classification number: F16H57/0497 ,  F16H25/2204 ,  F16H57/0412

Abstract: A ball screw apparatus is provided which is less likely to increase dynamic friction torque even when a nut is contracted by cooling, and in which cooling effect is made as high as possible and which does not invite excessive machining efficiency droop and increase in pressure loss. The ball screw apparatus includes a screw shaft, a nut screwed with the screw shaft via a plurality of balls, and a cooling section cooling the nut. The plurality of balls to which preload is applied in a two-point contact state, with a preload direction as a tensile direction, are disposed between a screw groove of the screw shaft and a screw groove of the nut. Or, a ratio of the axial length L of the through hole axially formed in the nut and the diameter D of the through hole axially formed in the nut is given by an equation “10≦L/D≦60”.

Abstract translation: 提供一种滚珠丝杠装置，其即使当螺母通过冷却收缩时也不太可能增加动摩擦转矩，并且其中冷却效果尽可能高，并且不会引起过度的加工效率下降和压力损失增加。 滚珠丝杠装置包括螺杆轴，通过多个滚珠与螺杆轴螺纹连接的螺母，以及冷却螺母的冷却部。 在螺钉轴的螺纹槽和螺母的螺纹槽之间，设置以预紧方式作为拉伸方向以两点接触状态施加预载荷的多个滚珠。 或者，在螺母中轴向形成的通孔的轴向长度L与在螺母中轴向形成的通孔的直径D的比率由等式“10＆nlE; L / D＆nlE; 60”给出。

公开(公告)号：US08593919B2

公开(公告)日：2013-11-26

申请号：US13577379

申请日：2010-11-10

Applicant: Masakazu Ikeda ,  Koichiro Nishimura ,  Yutaka Nagai

Inventor： Masakazu Ikeda ,  Koichiro Nishimura ,  Yutaka Nagai

IPC: G11B7/00

CPC classification number: G11B20/1217 ,  G11B27/034 ,  G11B27/24 ,  G11B2020/1268 ,  G11B2020/1292 ,  G11B2220/2541

Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.

Abstract translation: 获取扩展的地址，而不会改变嵌入在摆动中的地址的位数。 生成一个没有记录在光盘上的虚拟位，它由规则的差异表示，以及嵌入在部分或全部摆动地址中的信息的存在或不存在。

公开(公告)号：US08582404B2

公开(公告)日：2013-11-12

申请号：US13577320

申请日：2010-11-10

Applicant: Masakazu Ikeda ,  Koichiro Nishimura ,  Yutaka Nagai

Inventor： Masakazu Ikeda ,  Koichiro Nishimura ,  Yutaka Nagai

IPC: G11B7/00

CPC classification number: G11B20/1217 ,  G11B27/034 ,  G11B27/3063 ,  G11B2020/1268 ,  G11B2020/1292 ,  G11B2220/2541

Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.

公开(公告)号：US08514681B2

公开(公告)日：2013-08-20

申请号：US12605831

申请日：2009-10-26

Applicant: Masakazu Ikeda ,  Koichiro Nishimura ,  Yutaka Nagai

Inventor： Masakazu Ikeda ,  Koichiro Nishimura ,  Yutaka Nagai

IPC: G11B7/00 ,  G11B7/24

CPC classification number: G11B20/1217 ,  G11B27/24 ,  G11B2020/1221 ,  G11B2020/1227 ,  G11B2020/1232 ,  G11B2020/1239 ,  G11B2020/1267 ,  G11B2020/1268 ,  G11B2020/1278 ,  G11B2020/1292 ,  G11B2220/235 ,  G11B2220/2537

Abstract: A recording medium, an address generating method, an address detection method and a recording and reproduction apparatus capable of extending the wobble address without any considerable wobble restructuring are disclosed. Virtual bits not recorded in the disc and expressed by the difference of the rule or the presence or absence of the information embedded in a part or the whole of the wobble address are generated. Thus, the extended address can be obtained without changing the number of bits of the address embedded in the wobble.

Abstract translation: 本发明公开了一种记录介质，地址生成方法，地址检测方法以及能够扩展摆动地址而没有任何可观的摆动重构的记录再生装置。 生成未记录在光盘中并且由嵌入在部分或全部摆动地址中的规则的不同或存在或不存在而表示的虚拟位。 因此，可以在不改变嵌入在摆动中的地址的位数的情况下获得扩展地址。

公开(公告)号：US20120307612A1

公开(公告)日：2012-12-06

申请号：US13577389

申请日：2010-11-16

Applicant: Koichiro Nishimura ,  Yutaka Nagai

Inventor： Koichiro Nishimura ,  Yutaka Nagai

IPC: G11B20/00 ,  G11B7/24

CPC classification number: G11B20/1217 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/24041 ,  G11B20/1262 ,  G11B2020/122 ,  G11B2020/1227 ,  G11B2020/1278 ,  G11B2220/235 ,  G11B2220/2541 ,  G11B2220/2583

Abstract: An optical disc for recording information with a plurality of sorts of data recording densities. The optical disc has a plurality of data recording areas for recording information with mutually different data recording densities. Information about the data recording densities in the data recording areas is recorded in a BCA area with a specific format not depending on the data recording densities of the data recording areas. In this case, the data recording areas are located to be divided in the same plane of the disc or to be divided into a plurality of recording layers.

Abstract translation: 一种用于记录具有多种数据记录密度的信息的光盘。 光盘具有用于记录具有相互不同的数据记录密度的信息的多个数据记录区域。 关于数据记录区域中的数据记录密度的信息被记录在不依赖于数据记录区域的数据记录密度的特定格式的BCA区域中。 在这种情况下，数据记录区域被定位在盘的同一平面上，或被划分成多个记录层。

公开(公告)号：US20120307608A1

公开(公告)日：2012-12-06

申请号：US13577359

申请日：2010-11-10

Applicant: Masakazu Ikeda ,  Koichiro Nishimura ,  Yutaka Nagai

Inventor： Masakazu Ikeda ,  Koichiro Nishimura ,  Yutaka Nagai

IPC: G11B7/007 ,  G11B7/085

CPC classification number: G11B20/1217 ,  G11B27/322 ,  G11B2020/1268 ,  G11B2220/235 ,  G11B2220/2541

Abstract: Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.

公开(公告)号：US08180197B2

公开(公告)日：2012-05-15

申请号：US11644891

申请日：2006-12-26

Applicant: Yutaka Nagai ,  Toshifumi Takeuchi ,  Shigemitsu Higuchi

Inventor： Yutaka Nagai ,  Toshifumi Takeuchi ,  Shigemitsu Higuchi

IPC: H04N9/88 ,  H04N5/7824

CPC classification number: G11B20/10 ,  G11B7/00 ,  G11B19/28 ,  G11B20/10527 ,  G11B20/1258 ,  G11B27/105 ,  G11B2020/10962 ,  G11B2020/1099 ,  G11B2020/1244 ,  G11B2220/216 ,  G11B2220/2537 ,  H04N5/76 ,  H04N5/85

Abstract: A disk-like recording medium recording/reproducing method or apparatus for performing a data recording operation and a data reproducing operation to the disk-like recording medium alternately. The recording operation is performed at a constant linear velocity, and whether a recording area at an ending point of an n-th recording operation on the medium is continuous to a recording area at a starting point of an (n+1) the recording operation is identified. When a discontinuation of the recording area is identified, the rotational speed at the starting point of the (n+1)th recording operation is changed, during a reproducing operation between the n-th recording operation and the (n+1)th recording operation. When a continuation of the recording area is identified, the rotational speed of the disk-like recording medium at the ending point of the n-th recording operation is held, during a reproducing operation between the n-th recording operation and the (n+1)th recording operation.

Abstract translation: 交替地对盘状记录介质进行数据记录操作和数据再现操作的盘状记录介质记录/再现方法或装置。 以恒定的线速度执行记录操作，以及在介质的第n次记录操作的终点处的记录区域是否连续到记录操作的第（n + 1）个起点处的记录区域 被识别。 当识别到记录区域的中断时，在第（n + 1）记录操作的起始点处的转速在第n次记录操作和第（n + 1）个记录之间的再现操作期间改变 操作。 当识别到记录区域的延续时，在第n次记录操作和第（n + 1）个记录操作之间的再现操作期间，保持第n次记录操作的终点处的盘状记录介质的旋转速度， 1）记录操作。

公开(公告)号：US08144569B2

公开(公告)日：2012-03-27

申请号：US12983569

申请日：2011-01-03

Applicant: Yutaka Nagai ,  Koichiro Nishimura

Inventor： Yutaka Nagai ,  Koichiro Nishimura

IPC: G11B3/70 ,  G11B5/84 ,  G11B7/26 ,  G11B5/00 ,  G11B7/12 ,  G11B7/00

CPC classification number: G11B7/1267 ,  G11B7/24038 ,  G11B2007/0009

Abstract: Each layer includes a data recording area and a test writing area divided into a plurality of small areas, wherein the small areas of the test writing area are recorded in advance so that other each layer can make a combination of recorded and unrecorded states with respect to the small area, where OPC is carried out, in a layer where OPC is carried out. Moreover, OPC is carried out to each small area, where a combination of recorded/unrecorded states of other each layer differs from each other, to thereby calculate, as the optimum power, an average value of the result of each OPC or a central value of the dispersion thereof.

Abstract translation: 每个层包括数据记录区域和分成多个小区域的测试写入区域，其中预先记录测试写入区域的小区域，使得其他每层可以相对于记录区域和未记录状态组合 在执行OPC的层中执行OPC的小区域。 此外，对每个小区域进行OPC，其中每层的记录/未记录状态的组合彼此不同，从而计算每个OPC的结果的平均值或中心值 的分散体。

公开(公告)号：US20110299369A1

公开(公告)日：2011-12-08

申请号：US13151353

申请日：2011-06-02

Applicant: Yasuo Mutsuro ,  Yutaka Nagai ,  Koichiro Nishimura ,  Masakazu Ikeda ,  Osamu Kawamae

Inventor： Yasuo Mutsuro ,  Yutaka Nagai ,  Koichiro Nishimura ,  Masakazu Ikeda ,  Osamu Kawamae

IPC: G11B21/08

CPC classification number: G11B20/1217 ,  G11B20/00115 ,  G11B20/10527 ,  G11B20/1883 ,  G11B27/002 ,  G11B27/11 ,  G11B2020/10796 ,  G11B2020/1826 ,  G11B2220/20 ,  G11B2220/2541 ,  G11B2220/41

Abstract: There are provided an optical disc device and its recording/reproducing method for managing the management information about plural optical discs efficiently. In the present invention, the management information about the plural optical discs is stored in a memory. Moreover, the management information about part or all of the optical discs stored in the memory is recorded in the optical disc.

Abstract translation: 提供了一种用于有效管理关于多个光盘的管理信息的光盘装置及其记录/再现方法。 在本发明中，关于多个光盘的管理信息被存储在存储器中。 此外，关于存储在存储器中的部分或全部光盘的管理信息被记录在光盘中。