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    • 1. 发明授权
    • Optical recording medium
    • 在连续帧之间改变跟踪凹坑位置的光记录介质
    • US06510130B2
    • 2003-01-21
    • US09940693
    • 2001-08-29
    • Hideki HayashiToshio Goto
    • Hideki HayashiToshio Goto
    • G11B700
    • G11B7/0901G11B7/00745G11B7/0938
    • An optical recording medium that enables a recording or reproduction apparatus to perform accurate tracking servo control even if intersymbol interference occurs. An optical recording medium includes a plurality of frames continuously extending in an information reading direction. Each frame is defined by a servo region for recording tracking pits used in tracking servo control and a data region for recording information data. A position of each of the respective tracking pits in each respective servo region is changed in the information reading direction between successive frames.
    • 即使发生符号间干扰,也能够使记录再现装置执行精确的跟踪伺服控制的光记录介质。 光记录介质包括在信息读取方向上连续延伸的多个帧。 每个帧由用于记录用于跟踪伺服控制的跟踪凹坑的伺服区域和用于记录信息数据的数据区域定义。 每个相应伺服区域中的每个跟踪凹坑中的每一个的位置在连续帧之间的信息读取方向上改变。
    • 2. 发明授权
    • Information recording and reproducing method, information recording and reproducing system, information recording apparatus, and information reproducing apparatus
    • 信息记录和再现方法,信息记录和再现系统,信息记录装置和信息再现装置
    • US06370097B1
    • 2002-04-09
    • US09588660
    • 2000-06-06
    • Hideki HayashiToshio Goto
    • Hideki HayashiToshio Goto
    • G11B576
    • G11B7/24085G11B7/005G11B20/10009G11B20/1833
    • An information recording and reproducing method is provided with an information recording method of optically recording digital data onto an information recording medium such as an optical disc etc., by forming a pit having a shape corresponding to the digital data, and an information reproducing method of optically reproducing the recorded digital data from the information recording medium. The information recording method is provided with: a record code generating process of applying an encoding process using a convolutional code onto the digital data, to thereby convert the digital data into a record code; a multi-level symbol generating process of converting the generated record code corresponding to a plurality of bits into a multi-level symbol having a plurality of values; a record symbol generating process of applying a logical converting process onto the generated multi-level symbol to thereby convert the multi-level symbol into a record symbol; and a recording process of recording the record symbol onto the information recording medium by optically forming the pit on the information recording medium while changing the shape of the pit by several steps in correspondence with a value of the generated record symbol. The information reproducing method is provided with: an irradiating process of irradiating a light beam for reproducing the digital data so that an irradiation range of the light beam on the information recording medium covers a plurality of pits.
    • 信息记录和再现方法具有通过形成具有与数字数据相对应的形状的凹坑来将数字数据光学地记录到诸如光盘等的信息记录介质上的信息记录方法和信息记录和再现方法 从信息记录介质光学再现记录的数字数据。 该信息记录方法具有:将数字数据应用于使用卷积码的编码处理的记录码产生处理,从而将数字数据转换为记录码; 将与多个比特相对应的生成的记录码转换成具有多个值的多级符号的多级符号生成处理; 记录符号生成处理,将逻辑转换处理应用于生成的多级符号,从而将多级符号转换为记录符号; 以及记录处理,通过在信息记录介质上光学地形成凹坑,同时根据生成的记录符号的值改变凹坑的形状几个步骤,将记录符号记录在信息记录介质上。 信息再现方法具有:照射光束以再现数字数据的照射处理,使得信息记录介质上的光束的照射范围覆盖多个凹坑。
    • 3. 发明授权
    • Rotor core and method of manufacturing the same
    • 转子芯及其制造方法
    • US09065318B2
    • 2015-06-23
    • US13829337
    • 2013-03-14
    • Daisuke KomiyaToshio Goto
    • Daisuke KomiyaToshio Goto
    • H02K15/02H02K1/22H02K1/28
    • H02K15/02H02K1/28Y10T29/49012
    • A method of manufacturing a rotor core includes a first process of punching out punched holes 22, 23 forming outlines of keys 13, 14 in a thin metal strip 18, the holes 22, 23 including inside areas 25 located inside a shaft hole 12 and outside areas 26 continuous from the areas 25 and located outside the hole 12; a second process of punching out the hole 12 including recesses 35, 36 to avoid the keys 13, 14 and communicating with the holes 22, 23; and a third process of punching out an outline of a core sheet 11 having the hole 12 and laminating the sheets 11. Thereby, a shaft hole having keys is formed precisely, a thickness deviation of core sheets is eliminated, and a rotor core having homogeneous magnetism is provided.
    • 制造转子铁芯的方法包括:冲切孔22,23的第一工序,其形成薄金属条18中的键13,14的轮廓;孔22,23包括位于轴孔12内部的内部区域25和外部 从区域25连续并位于孔12外部的区域26; 第二种冲孔方法,包括凹槽35,36,以避开键13,14,并与孔22,23连通; 以及冲压出具有孔12并层压片材11的芯片11的轮廓的第三过程。由此,精确地形成具有键的轴孔,消除了芯片的厚度偏差,并且具有均匀的转子芯 提供磁力。
    • 4. 发明申请
    • Spectroscopy Method and Spectroscope
    • 光谱法和光谱仪
    • US20090122317A1
    • 2009-05-14
    • US11991542
    • 2006-09-06
    • Masafumi ItoNorihiko NishizawaMasaru HoriToshio GotoHiroyuki Kano
    • Masafumi ItoNorihiko NishizawaMasaru HoriToshio GotoHiroyuki Kano
    • G01N21/31G02B6/26
    • G01N21/39G01J3/02G01J3/0218G01J3/0224G01J3/10G01J3/42G01J2001/4242G01N2201/0697G02B6/2861
    • To achieve an apparatus capable of measuring a light absorption coefficient f a sample with high sensitivity. A ring down spectroscope uses a wavelength-variable femtosecond soliton pulse light source 1. Pulse light is input to a loop optical fiber 6 through a first light waveguide 4 and a wavelength selective switch 5. Ring down pulse light is input to a homodyne detector through the wavelength selective switch 5. On the other hand, pulse light propagating in the first light waveguide 4 is split and input to light waveguides constituting a second light waveguide 20 through an optical directional coupler 8 and a first optical switching element 12. The pulse light propagating in the second light waveguide 20 is input to the homodyne detector as reference light and used for synchronous detection. The plural light waveguides constituting the second light waveguide 20 differ in optical length in accordance with the length of the optical fiber 6, and can slightly change the optical length.
    • 实现能够以高灵敏度测量样品的光吸收系数f的装置。 环形光谱仪使用波长可变飞秒激光脉冲光源1.脉冲光通过第一光波导4和波长选择开关5输入到环形光纤6中。环形脉冲光通过 波长选择开关5.另一方面,在第一光波导4中传播的脉冲光通过光学定向耦合器8和第一光开关元件12被分离并输入到构成第二光波导20的光波导上。脉冲光 在第二光波导20中传播的信号被输入到零差检测器作为参考光,并用于同步检测。 构成第二光波导路20的多个光波导根据光纤6的长度的光学长度不同,并且可以稍微改变光学长度。