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    • 1. 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。
    • 2. 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。
    • 5. 发明授权
    • Silicon carbide semiconductor device
    • 碳化硅半导体器件
    • US08766278B2
    • 2014-07-01
    • US13565388
    • 2012-08-02
    • Hideki Hayashi
    • Hideki Hayashi
    • H01L29/15H01L21/8238
    • H01L27/088H01L21/8213
    • First, second, fourth, and fifth impurity regions have a first conductivity type, and a third impurity region has a second conductivity type. The first to third impurity regions reach a first layer having the first conductivity type. The fourth and fifth impurity regions are provided on a second layer. First to fifth electrodes are provided on the first to fifth impurity regions, respectively. Electrical connection is established between the first and fifth electrodes, and between the third and fourth electrodes. A sixth electrode is provided on a gate insulating film covering a portion between the fourth and fifth impurity regions.
    • 第一,第二,第四和第五杂质区具有第一导电类型,第三杂质区具有第二导电类型。 第一至第三杂质区域到达具有第一导电类型的第一层。 第四和第五杂质区设置在第二层上。 第一至第五电极分别设置在第一至第五杂质区上。 在第一和第五电极之间以及第三和第四电极之间建立电连接。 第六电极设置在覆盖第四和第五杂质区域之间的部分的栅极绝缘膜上。
    • 8. 发明授权
    • Direct-current motor control device and method for detecting state of direct-current motor
    • 直流马达控制装置及直流马达状态检测方法
    • US08424839B2
    • 2013-04-23
    • US13020207
    • 2011-02-03
    • Hideki HayashiSatoru Hiramoto
    • Hideki HayashiSatoru Hiramoto
    • F16K31/02
    • H02K23/66F02D41/005H02P7/03Y02T10/47
    • A current detection unit detects an electric current caused by superimposing a direct current from a direct-current power source on an alternating current from an alternating-current power source and supplied through a brush to a direct-current motor. An extracting unit extracts an alternating-current component of the detected electric current. An angle detection unit detects a rotation angle of the motor according to the extracted alternating-current component. A direction detection unit detects a rotative direction of the motor according to a change pattern of the extracted alternating-current component. A core of the motor has slots each defined between adjacent two of teeth. The slots respectively accommodate phase coils respectively wound around the teeth. Turns of the phase coils are different from each other.
    • 电流检测单元通过将来自直流电源的直流电叠加到来自交流电源的交流电并通过电刷提供给直流电动机而引起的电流。 提取单元提取检测到的电流的交流分量。 角度检测单元根据所提取的交流分量检测电动机的旋转角度。 方向检测单元根据所提取的交流分量的变化模式来检测电动机的旋转方向。 电动机的铁芯在相邻的两个齿之间具有槽。 这些槽分别容纳分别缠绕在齿上的相位线圈。 相位线圈的转数彼此不同。