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    • 122. 发明申请
    • Magneto-optical recording medium and reproducing method thereof
    • 磁光记录介质及其再现方法
    • US20050002318A1
    • 2005-01-06
    • US10902328
    • 2004-07-29
    • Motoyoshi MurakamiTakeshi SakaguchiYasumori Hino
    • Motoyoshi MurakamiTakeshi SakaguchiYasumori Hino
    • G11B3/00G11B11/00G11B11/105
    • G11B11/10578G11B11/10515G11B11/10582G11B11/10584G11B11/10586
    • A magneto-optical recording medium, including a recording layer, a transfer control layer magnetically coupled to the recording layer, and a reproduction layer. The recording layer includes a recording magnetic domain in which information is recorded by a magnetization direction vertical to the surface of the film. The reproduction layer includes a reproduction magnetic domain in which information in the recording layer is transferred and formed as a magnetization direction by magnetic coupling. The direction of magnetization of the recording magnetic domain of the recording layer and the direction of magnetization of the transfer control layer corresponding to the recording magnetic domain are in opposite directions in at least part of the range of temperatures less than a transfer temperature where the reproduction magnetic domain is transferred to the reproduction layer. The Curie point temperature of the transfer control layer is higher than this transfer temperature.
    • 包括记录层,磁耦合到记录层的转移控制层和再现层的磁光记录介质。 记录层包括通过垂直于胶片表面的磁化方向记录信息的记录磁畴。 再现层包括其中记录层中的信息通过磁耦合传送并形成为磁化方向的再现磁畴。 记录层的记录磁畴的磁化方向和对应于记录磁畴的转印控制层的磁化方向在至少部分小于转印温度的范围内的方向上是相反的,其中再生 磁畴被传送到再现层。 转移控制层的居里点温度高于此转印温度。
    • 125. 发明授权
    • Modulated signal detecting apparatus and modulated signal detecting method
    • 调制信号检测装置和调制信号检测方法
    • US09042002B2
    • 2015-05-26
    • US13817952
    • 2012-08-16
    • Kiyotaka ItoYasumori Hino
    • Kiyotaka ItoYasumori Hino
    • G02F2/00G11B7/1395G11B7/1365G11B20/10
    • G02F2/00G11B7/1365G11B7/1395G11B20/10268H04B10/6165H04L27/223H04L27/2271
    • A phase difference error detecting unit detects a phase difference error component included in a phase difference component; a phase difference correcting unit corrects a first signal having the phase difference component as an angle of a cosine function and a second signal whose angle of the cosine function differs from that of the first signal by approximately π/2 based on the detected phase difference error component; a phase operating unit operates a phase difference component from the first signal and the second signal corrected by the phase difference correcting unit; and the phase difference correcting unit obtains the corrected first signal and the corrected second signal by rotating a coordinate point represented by the first signal and the second signal on a polar coordinate plane by an angle corresponding to the phase difference error component.
    • 相位差误差检测单元检测包括在相位差分量中的相位差误差分量; 相位差校正单元基于检测到的相位差校正具有相位差分量的第一信号作为余弦函数的角度和第二信号,其余弦函数的角度与第一信号的角度不同于大约&pgr / 误差分量 相位操作单元对来自第一信号的相位差分量和由相位差校正单元校正的第二信号进行操作; 并且相位差校正单元通过将由第一信号和第二信号表示的坐标点在极坐标平面上旋转与相位差误差分量相对应的角度来获得校正的第一信号和校正的第二信号。
    • 126. 发明申请
    • DECODING APPARATUS AND DECODING METHOD
    • 解码设备和解码方法
    • US20130173993A1
    • 2013-07-04
    • US13824152
    • 2012-08-01
    • Keisuke FujimotoYasumori Hino
    • Keisuke FujimotoYasumori Hino
    • G06F11/10
    • G06F11/10G11B20/1833G11B2020/185G11B2220/2537H03M13/1111H03M13/1128H03M13/41
    • A control device (211) inputs reliability information on the same data block a plurality of times into a reliability storage memory (202). A reliability generating device (201) generates anew reliability information by performing computation processing based on a stochastic computation by using reliability information generated in the previous cycle that has been saved in the reliability storage memory (202) and reliability information generated in the present cycle, and saves the reliability information generated anew in the reliability storage memory (202) when the decoding is performed by using reliability information on the data block same as that in the previous cycle. A column processing computation device (204) computes a column processing output value by using the reliability information generated anew and saved in the reliability storage memory (202) and a row processing output value.
    • 控制装置(211)将相同数据块上的可靠性信息多次输入到可靠性存储存储器(202)中。 可靠性生成装置(201)通过使用保存在可靠性存储存储器(202)中的上一个循环中生成的可靠性信息和在本周期中生成的可靠性信息,通过进行基于随机计算的计算处理,生成新的可靠性信息, 并且通过使用与前一周期相同的数据块的可靠性信息来执行解码时,将可靠性信息重新保存在可靠性存储存储器(202)中。 列处理计算装置(204)通过使用重新生成并保存在可靠性存储存储器(202)中的可靠性信息和行处理输出值来计算列处理输出值。
    • 127. 发明授权
    • Optical head device, optical information device, and information processing device
    • 光头设备,光信息设备和信息处理设备
    • US08395980B2
    • 2013-03-12
    • US13391483
    • 2010-07-30
    • Yoshiaki KommaJoji AnzaiYasumori HinoKousei SanoHideki NakataKeisuke FujimotoTakeharu YamamotoTakeshi Shimamoto
    • Yoshiaki KommaJoji AnzaiYasumori HinoKousei SanoHideki NakataKeisuke FujimotoTakeharu YamamotoTakeshi Shimamoto
    • G11B7/00
    • G11B7/1381G11B7/1275G11B2007/0006G11B2007/0013
    • When information is recorded or reproduced on or from an optical information medium having three or more recording layers using blue light, interference by another layer light is reduced and, when information is reproduced from an optical information medium using red light, an S/N ratio is held excellently high.An optical head device includes a first laser light source (1) which emits blue light, a second laser light source (2) which emits red light, an objective lens (11) which focuses the blue light onto a recording layer of a first optical disc (12) or focuses the red light onto a recording layer of a second optical disc (13), a photodetector (9) which receives the blue light reflected by the recording layer of the first optical disc (12) or the red light reflected by the recording layer of the second optical disc (13) and outputs an electric signal in accordance with an amount of the received blue light or red light, and a wavelength selective light blocking region (7x) which blocks a predetermined range of the blue light including an optical axis thereof to prevent the predetermined range from reaching the photodetector (9), and transmits the red light.
    • 当使用蓝光在具有三个或更多个记录层的光信息介质上记录或再现信息时,减少了另一层光的干扰,并且当使用红光从光信息介质再现信息时,S / N比 举办得非常高。 光头装置包括发射蓝光的第一激光光源(1),发出红光的第二激光光源(2),将蓝光聚焦到第一光学记录层上的物镜(11) 盘(12)或将红光聚焦到第二光盘(13)的记录层上,接收由第一光盘(12)的记录层反射的蓝光的光电检测器(9)或反射的红光 通过第二光盘(13)的记录层,并根据所接收的蓝光或红光的量输出电信号,以及阻挡蓝光的预定范围的波长选择性遮光区域(7x) 包括其光轴以防止预定范围到达光电检测器(9),并发送红光。
    • 128. 发明授权
    • Optical recording medium, and optical information device
    • 光记录介质和光信息设备
    • US08369200B2
    • 2013-02-05
    • US13238060
    • 2011-09-21
    • Yoshiaki KommaJoji AnzaiMasahiko TsukudaYasumori Hino
    • Yoshiaki KommaJoji AnzaiMasahiko TsukudaYasumori Hino
    • G11B7/00
    • G11B7/24038G11B7/005G11B7/09G11B7/13925G11B2007/0013
    • An optical recording medium and an optical information device that improve the quality of a servo signal and a reproduction signal. In the optical recording medium, when shape-wise thicknesses tr1, tr2, tr3, and tr4 of a cover layer (42), a first intermediate layer (43), a second intermediate layer (44), and a third intermediate layer (45) are respectively converted into thicknesses t1, t2, t3, and t4 of the respective corresponding layers each having a predetermined refractive index “no”, a defocus amount with respect to a layer having a refractive index nrα and a thickness trα (satisfying: 1≦α≦n (where α is a positive integer and n is an integer of 4 or more)), and a defocus amount with respect to a layer having the refractive index “no” and a thickness tα (satisfying: 1≦α≦n (where α is a positive integer and n is an integer of 4 or more)) are equal to each other. Further, the thicknesses t1, t2, t3, and t4 satisfy |t1−(t2+t3+t4)|≧1 μm, a difference between any two values of the thicknesses t1, t2, t3, and t4 is set to 1 μm or more, and |(t1+t2)−(t3+t4)|≧1 μm.
    • 一种提高伺服信号的质量和再现信号的光学记录介质和光学信息设备。 在光记录介质中,当覆盖层(42),第一中间层(43),第二中间层(44)和第三中间层(45)的形状厚度tr1,tr2,tr3和tr4 )分别转换成各自具有预定折射率no的相应层的厚度t1,t2,t3和t4,相对于具有折射率nrα和厚度trα的层的散焦量(满足:1≦̸α&nlE ; n(其中α是正整数,n是4以上的整数))和相对于具有折射率no和厚度tα的层的散焦量(满足1≦̸α≦̸ n(其中α 是正整数,n是4以上的整数))彼此相等。 另外,厚度t1,t2,t3,t4满足| t1〜t2(t3 + t4)|≥1μm,将厚度t1,t2,t3,t4的任意两个值之差设定为1μm 以上|(t1 + t2) - (t3 + t4)|≥1μm。