公开(公告)号：US08416480B2

公开(公告)日：2013-04-09

申请号：US12032536

申请日：2008-02-15

Applicant: Tomiji Tanaka ,  Masaaki Hara ,  Kazutatsu Tokuyama ,  Satoru Seko ,  Shinji Yamada ,  Hitoshi Okada

Inventor： Tomiji Tanaka ,  Masaaki Hara ,  Kazutatsu Tokuyama ,  Satoru Seko ,  Shinji Yamada ,  Hitoshi Okada

IPC: G03H1/26 ,  G03H1/10

CPC classification number: G11B7/1362 ,  G03H1/22 ,  G03H1/265 ,  G03H2001/0441 ,  G03H2210/562 ,  G11B7/0065 ,  G11B7/1369

Abstract: A hologram reproducing apparatus includes a first reference light path leading laser light from a laser light source so that a hologram recording medium is irradiated with first reference light; a diffracted light path leading diffracted light, generated from the hologram recording medium by irradiation with the first reference light, to a light receiving element having a plurality of pixels; and a second reference light path leading second reference light, having the same polarization direction as that of the diffracted light, from the laser light source to the light receiving element. The second reference light path is provided with a phase modulating element so that the phase difference between the diffracted light and the second reference light in a light receiving surface of the light receiving element is adjusted within a predetermined range.

Abstract translation: 全息图再现装置包括：第一参考光路，其引导来自激光光源的激光，使得全息图记录介质用第一参考光照射; 通过照射第一参考光从全息图记录介质产生的衍射光的衍射光路到具有多个像素的光接收元件; 以及第二参考光路，其将具有与衍射光的偏振方向相同的偏振方向的第二参考光从激光光源引导到光接收元件。 第二参考光路设置有相位调制元件，使得光接收元件的光接收表面中的衍射光和第二参考光之间的相位差被调节在预定范围内。

公开(公告)号：US08149486B2

公开(公告)日：2012-04-03

申请号：US12373743

申请日：2008-03-19

Applicant: Masaaki Hara

Inventor： Masaaki Hara

IPC: G02B5/32

CPC classification number: H03M5/16 ,  G11B7/0065 ,  G11B7/083 ,  G11B7/128 ,  G11B20/1426 ,  G11B20/1488 ,  G11B20/1496 ,  G11B2220/2504

Abstract: A hologram recording and reproduction method is configured such that the number of values which can be implemented per one pixel is increased from two according to a conventional method to three or more to achieve increase of the data recording capacity. While two values are conventionally represented by two different values of “0” and “1” of the amplitude, for example, phases “0” and “π” are combined with the amplitudes “0” and “1” thereby to make it possible to represent three values of “0,” “1” and “−1” (amplitude “1”×phase “π”). In particular, a two-value data train of “0” and “1” is converted into another data train of three values of “0,” “1” and “−1” in accordance with a rule for encoding determined in advance, and the amplitude “0” is allocated to pixels of the value “0”; the amplitude “1” (phase “0”) is allocated to pixels of the value “1”; and the amplitude “1” and the phase “π” are allocated to pixels of the value “−1,” to carry out recording. Increase of the data recording capacity can be achieved thereby.

Abstract translation: 全息记录和再现方法被配置为使得每个像素可实现的值的数量从根据常规方法的两个增加到三个或更多，以实现数据记录容量的增加。 虽然两个值通常由振幅的两个不同值“0”和“1”表示，例如，相位“0”和“＆pgr”与振幅“0”和“1”组合，从而使其 可以表示“0”，“1”和“-1”（振幅“1”×相位“＆pgr”“）的三个值。 特别地，根据预先确定的编码规则，将“0”和“1”的双值数据串转换为三个值为“0”，“1”和“-1”的数据序列， 并且将幅度“0”分配给值“0”的像素; 将幅度“1”（相位“0”）分配给值“1”的像素; 并且将幅度“1”和相位“＆pgr”分配给值“-1”的像素，以执行记录。 从而可以实现数据记录容量的提高。

公开(公告)号：US07965205B2

公开(公告)日：2011-06-21

申请号：US12150416

申请日：2008-04-28

Applicant: Masaaki Hara ,  Kenji Tanaka

Inventor： Masaaki Hara ,  Kenji Tanaka

IPC: H03M7/00

CPC classification number: H03M5/145 ,  G11B7/0065

Abstract: Disclosed herein is a data identification method for identifying, from within a readout signal from a recording medium on or in which user data of k bits are recorded using a recording modulation code wherein m bits from among n bits which compose one codeword have a value of “1” while the remaining n-m bits have another value of “0”, the data, n and m being integers including, a first step of delimiting the readout signal in a unit of a codeword and adding, with regard to one of the n-bit codewords obtained by the delimiting, an amplitude of the readout signal of the bits of “1” to 2k different codewords which may possibly be recorded and setting results of the addition as evaluation values, and a second step of finding a maximum value among the 2k evaluation values and outputting the maximum value as an evaluation result.

Abstract translation: 这里公开了一种数据识别方法，用于在记录介质上从记录介质读出的信号中识别k比特的用户数据，记录调制码，其中构成一个码字的n比特中的m比特的值为 “1”，而其余的nm位具有另一个值“0”，数据n和m是整数，其包括：以码元为单位限定读出信号的第一步骤，并相对于n 通过定界获得的位字节码，可能被记录的比特“1”到2k个不同码字的读出信号的幅度，并且将添加的结果设置为评估值，以及第二步骤， 2k评估值并输出最大值作为评估结果。

公开(公告)号：US20100225985A1

公开(公告)日：2010-09-09

申请号：US12697639

申请日：2010-02-01

Applicant: Atsushi Fukumoto ,  Kenji Tanaka ,  Masaaki Hara ,  Akio Yamakawa

Inventor： Atsushi Fukumoto ,  Kenji Tanaka ,  Masaaki Hara ,  Akio Yamakawa

IPC: G03H1/22

CPC classification number: G11B7/083 ,  G03H1/16 ,  G03H2225/32 ,  G03H2225/36 ,  G03H2225/60 ,  G11B7/0065 ,  G11B20/10009 ,  G11B2220/2504

Abstract: A reproducing device including a light source that emits light for reproducing recorded information to a hologram recording medium subjected to recording of information by interference fringes of signal light and reference light, a light irradiating unit that generates the reference light for obtaining a reproduced image according to the recorded information and DC light having uniform intensity and phase, and irradiates the hologram recording medium with both the reference light and the DC light and with only the DC light, a light receiving unit that performs light-reception for the DC light and the reproduced image, and performs light-reception for the DC light, and a difference calculating unit that calculates a difference between an image signal obtained based on a light-reception result of the reproduced image and the DC light, and an image signal obtained based on a light-reception result of the DC light.

Abstract translation: 一种再生装置，其特征在于，包括：光源，其向通过信号光和基准光的干涉条纹记录信息的全息图记录媒体发出记录信息的光;照射单元，生成用于获得根据 所记录的信息和DC光具有均匀的强度和相位，并且仅用DC光照射具有参考光和DC光的全息图记录介质，对DC光进行光接收的光接收单元 图像，并且对DC光进行光接收;以及差分计算单元，其计算基于再现图像的光接收结果获得的图像信号与DC光之间的差异，以及基于 直流光的光接收结果。

公开(公告)号：US20090323481A1

公开(公告)日：2009-12-31

申请号：US12476397

申请日：2009-06-02

Applicant: Masaaki HARA ,  Satoru SEKO ,  Hitoshi Okada ,  Tomiji TANAKA ,  Yoshiki OKAMOTO

Inventor： Masaaki HARA ,  Satoru SEKO ,  Hitoshi Okada ,  Tomiji TANAKA ,  Yoshiki OKAMOTO

IPC: G11B7/00

CPC classification number: G11B7/083 ,  G11B7/00781 ,  G11B7/08541 ,  G11B7/1275 ,  G11B7/24038 ,  G11B7/24044

Abstract: A drive apparatus includes a light irradiation section for applying light from a light source via an object lens on a hologram recording medium having a recording layer on which a hologram is formed and a track formation layer on which an address recording track composed of a pit string recording address information representing the hologram recording position on the recording layer and an auxiliary track composed of a continuous groove formed side by side with the address recording track are formed, a light spot displacement section for displacing a light spot formed by the light irradiation section in a radius direction of the hologram recording medium, and a control section for controlling the light spot displacement section following a light information signal upon the auxiliary track traverse of the light spot obtained in accordance with the light spot displacement to execute a jump operation between the address recording tracks.

Abstract translation: 驱动装置包括光照射部分，用于经由物镜将光从光源施加到具有形成全息图的记录层的全息图记录介质上，以及轨道形成层，其上由凹坑串构成的地址记录轨道 形成表示记录层上的全息图记录位置的记录地址信息和由与地址记录轨道并排形成的连续槽组成的辅助轨道，用于将由光照射部分形成的光点移位的光点位移部分 全息图记录介质的半径方向，以及控制部分，用于控制根据光斑位移获得的光点的辅助轨道横越之后的光信息信号的光点位移部分，以执行地址 录制曲目。

公开(公告)号：US07636219B2

公开(公告)日：2009-12-22

申请号：US11732403

申请日：2007-04-03

Applicant: Tomohiro Ikegami ,  Hiroyuki Ino ,  Toshiyuki Nakagawa ,  Tomoyuki Hiura ,  Norihito Mihota ,  Masaaki Hara ,  Yoshihiko Deoka ,  Hidetoshi Honda ,  Shinichi Fukuda

Inventor： Tomohiro Ikegami ,  Hiroyuki Ino ,  Toshiyuki Nakagawa ,  Tomoyuki Hiura ,  Norihito Mihota ,  Masaaki Hara ,  Yoshihiko Deoka ,  Hidetoshi Honda ,  Shinichi Fukuda

IPC: G11B15/18

CPC classification number: G11B20/22 ,  G11B5/0083 ,  G11B5/584 ,  G11B20/10009 ,  G11B2220/90

Abstract: A magnetic recording and reproducing apparatus is disclosed which includes: a recording device configured to record with a write head a plurality of tracks constituting a unit of signal processing for data detection, to magnetic recording media; a reproduction device configured to reproduce with a read head a plurality of reproduction signals concurrently from the plurality of tracks on the magnetic recording media in different positional relations to the tracks, the reproduction signals being arranged into that one unit for signal processing thereby generating the track-specific reproduction signals; and a phase alignment device configured to align phases of record signals between adjacent tracks among the plurality of tracks recorded by the recording device to the magnetic recording media.

Abstract translation: 公开了一种磁记录和再现装置，其包括：记录装置，被配置为以写入头记录构成用于数据检测的信号处理单元的多个轨道到磁记录介质; 一种再现装置，被配置为以与磁迹不同的位置关系从磁记录介质上的多个磁道同时以读头读出多个再现信号，再现信号被布置成该一个单元用于信号处理，从而生成轨道 特定的再现信号; 以及相位对准装置，其被配置为将由记录装置记录的多个轨道中的相邻轨道之间的记录信号的相位对准到磁记录介质。

公开(公告)号：US20090290471A1

公开(公告)日：2009-11-26

申请号：US12429883

申请日：2009-04-24

Applicant: Kenji TANAKA ,  Atsushi Fukumoto ,  Masaaki Hara ,  Kazutatsu Tokuyama

Inventor： Kenji TANAKA ,  Atsushi Fukumoto ,  Masaaki Hara ,  Kazutatsu Tokuyama

IPC: G11B7/00

CPC classification number: G11B7/1369 ,  G11B7/0065 ,  G11B7/128 ,  G11B7/1381 ,  G11B7/1392

Abstract: A recording and reproducing device performs recording and reproduction on a hologram recording medium on which data is recorded by the use of interference fringes formed by signal light and reference light. The device includes: a light generation device including a spatial light modulator which performs spatial light modulation on incident light, and generating the signal and reference lights in the recording and the reference light in the reproduction; an image sensor for receiving the incident light and obtaining a light reception signal; an optical system for guiding the signal and reference lights to the hologram recording medium and reproduction light to the image sensor; and a band limiting device inserted on a Fourier plane in an optical path of the optical system, and having a transmittance set to be lower in a central area thereof than in a peripheral area thereof, to perform band limitation on the incident light.

Abstract translation: 记录和再现装置在通过使用由信号光和参考光形成的干涉条纹记录数据的全息图记录介质上执行记录和再现。 该装置包括：发光装置，其包括对入射光进行空间光调制的空间光调制器，并且在再现中产生记录中的信号和参考光; 用于接收入射光并获得光接收信号的图像传感器; 用于将信号和参考光引导到全息图记录介质并将光再现到图像传感器的光学系统; 以及插入光学系统的光路中的傅立叶平面上的带限制装置，并且在其中心区域具有比在其周边区域更低的透射率，以对入射光进行带限制。

公开(公告)号：US07433220B2

公开(公告)日：2008-10-07

申请号：US11264939

申请日：2005-11-02

Applicant: Tsunenori Shiimoto ,  Katsuhisa Aratani ,  Masaaki Hara ,  Tomohito Tsushima

Inventor： Tsunenori Shiimoto ,  Katsuhisa Aratani ,  Masaaki Hara ,  Tomohito Tsushima

IPC: G11C11/22

CPC classification number: G11C13/0007 ,  G11C2213/31 ,  G11C2213/32

Abstract: A memory element having a configuration in which contents of recorded data can be judged easily and power consumption can be reduced, and a method of driving the same are provided. A memory element 10 of the present invention includes variable resistance elements 11 and 12 whose resistance state changes reversibly between a high resistance state and a low resistance state by applying a voltage of a different polarity between an electrode 1 of one side and an electrode 2 of the other side; the electrode 1 of one side in each element of the two variable resistance elements 11 and 12 is made a common electrode; and the electrode 2 of the other side in each element of the two variable resistance elements 11 and 12 is made independent and is provided respectively with the terminal X and terminal Y, to form a memory cell having two terminals in total.

Abstract translation: 具有可以容易地判断记录数据的内容并且能够降低功耗的配置的存储元件及其驱动方法。 本发明的存储元件10包括可变电阻元件11和12，其电阻状态在高电阻状态和低电阻状态之间可逆地改变，通过在一侧的电极1和电极2之间施加不同极性的电压 另一边; 将两个可变电阻元件11和12的每个元件中的一侧的电极1制成公共电极; 并且两个可变电阻元件11和12的每个元件中的另一侧的电极2被制成独立的并且分别设置有端子X和端子Y，以形成总共具有两个端子的存储单元。

公开(公告)号：US20070242377A1

公开(公告)日：2007-10-18

申请号：US11728305

申请日：2007-03-23

Applicant: Tomoyuki Hiura ,  Hiroyuki Ino ,  Toshiyuki Nakagawa ,  Norihito Mihota ,  Tomohiro Ikegami ,  Shinichi Fukuda ,  Yoshihiko Deoka ,  Hidetoshi Honda ,  Masaaki Hara

Inventor： Tomoyuki Hiura ,  Hiroyuki Ino ,  Toshiyuki Nakagawa ,  Norihito Mihota ,  Tomohiro Ikegami ,  Shinichi Fukuda ,  Yoshihiko Deoka ,  Hidetoshi Honda ,  Masaaki Hara

IPC: G11B20/10

CPC classification number: G11B5/588 ,  G11B20/10009 ,  G11B20/22 ,  G11B27/3018 ,  G11B2220/90

Abstract: A magnetic recording/reproducing apparatus is disclosed wherein reproduced signals read out from a plurality of recording tracks using a reproducing head can be separated into original recording signals of the recording tracks. Upon recording, an identification signal which has a recording wavelength equal to or greater than a minimum recording wavelength and causes no interference of any of the recording tracks with any adjacent one of the recording tracks is appended to and recorded together with a recording signal in order to allow, upon reproduction, acquisition of the position information of the reproducing head with respect to the plural recording tracks of the magnetic recording medium. Upon reproduction, a reproduced signal for each of the recording tracks of the magnetic recording medium is generated on the basis of the positional information read from the recording tracks.

Abstract translation: 公开了一种磁记录/再现装置，其中使用再现头从多个记录道读出的再现信号可被分离成记录磁道的原始记录信号。 在记录时，具有等于或大于最小记录波长的记录波长并且不使任何记录磁道与任何相邻记录磁道之间的干扰的识别信号被附加到记录信号并与记录信号一起记录 允许在再现时获取关于磁记录介质的多个记录磁道的再现磁头的位置信息。 在再现时，基于从记录轨道读取的位置信息产生用于磁记录介质的每个记录轨道的再现信号。

公开(公告)号：US20070242376A1

公开(公告)日：2007-10-18

申请号：US11726233

申请日：2007-03-21

Applicant: Toshiyuki Nakagawa ,  Hiroyuki Ino ,  Tomoyuki Hiura ,  Tomohiro Ikegami ,  Masaaki Hara ,  Norihito Mihota ,  Shinichi Fukuda ,  Yoshihiko Deoka ,  Hidetoshi Honda

Inventor： Toshiyuki Nakagawa ,  Hiroyuki Ino ,  Tomoyuki Hiura ,  Tomohiro Ikegami ,  Masaaki Hara ,  Norihito Mihota ,  Shinichi Fukuda ,  Yoshihiko Deoka ,  Hidetoshi Honda

IPC: G11B20/10

CPC classification number: G11B5/584 ,  G11B5/0083 ,  G11B5/00865

Abstract: A magnetic recording and reproduction method includes the steps of recording a plurality of tracks which make a unit for a signal process for data detection by means of a recording head on a magnetic recording medium, and reproducing signals of the plural tracks by a plural number of times in different positional relationships to the tracks by means of a reproduction head which can reproduce a signal across the plural tracks of the magnetic recording medium, collecting the reproduction signals in the unit and performing a signal process for the unit to produce reproduction signals for the individual tracks.

Abstract translation: 磁记录和再现方法包括以下步骤：通过磁记录介质上的记录头将多个磁道记录在数据检测用信号处理单元上，并通过多个 通过可以再现磁记录介质的多个轨道上的信号的再现头与轨道的不同位置关系的时间，收集单元中的再现信号，并且执行用于该单元的信号处理以产生用于 个别曲目。