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    • 83. 发明申请
    • RECORDING HEAD AND RECORDING APPARATUS
    • 记录头和记录装置
    • US20080100650A1
    • 2008-05-01
    • US11957120
    • 2007-12-14
    • Atsushi SakamotoHirokazu TanakaJiro Moriyama
    • Atsushi SakamotoHirokazu TanakaJiro Moriyama
    • B41J29/38
    • B41J2/2125B41J2202/17
    • A recording apparatus performs a recording operation with a recording head that includes a recording element having two types of discharge characteristics, and a memory holding k-bit information indicating a rank of the discharge characteristic of the recording element and j-bit information, where j and k has a relationship of k>j, indicating a difference from the k-bit information. The recording apparatus includes an acquiring unit to acquire the k-bit information and the j-bit information, a selection unit to select driving parameters of one of the two types of the recording elements based on the k-bit information, and select the driving parameters of the other of the two types of the recording elements based on the k-bit information and the j-bit information, and a control unit to control a driving of the recording head based on the driving parameters selected by the selection unit.
    • 记录装置用包括具有两种放电特性的记录元件的记录头进行记录操作,以及存储表示记录元件的放电特性和j位信息的等级的k位信息的存储器,其中j 并且k具有表示与k位信息的差的k> j的关系。 记录装置包括获取单元,用于获取k比特信息和j比特信息;选择单元,用于基于k比特信息选择两种类型的记录元素之一的驱动参数,并选择驾驶 基于k位信息和j位信息的两种类型的记录元件中的另一种的参数,以及控制单元,用于基于由选择单元选择的驱动参数来控制记录头的驱动。
    • 85. 发明授权
    • Semiconductor laser element, method of fabrication thereof, and multi-wavelength monolithic semiconductor laser device
    • 半导体激光元件及其制造方法以及多波长单片半导体激光器件
    • US07295588B2
    • 2007-11-13
    • US10724570
    • 2003-11-26
    • Akira TanakaHideo ShiozawaMinoru WatanabeKoichi Gen-EiHirokazu Tanaka
    • Akira TanakaHideo ShiozawaMinoru WatanabeKoichi Gen-EiHirokazu Tanaka
    • H01S5/00
    • B82Y20/00H01S5/0658H01S5/2206H01S5/2231H01S5/34326H01S5/3436H01S5/4031H01S5/4087
    • The present invention provides a semiconductor laser element, a method of fabrication thereof, and a multi-wavelength monolithic semiconductor laser device that achieve self-sustained pulsation up to a high output level and achieve self-sustained pulsation over a wide output range. A semiconductor laser element that exhibits self-sustained pulsation in a predetermined output region, said semiconductor laser element comprising: a substrate; a first conductive type clad layer formed on said substrate; an active layer formed on said first conductive type clad layer for emitting light by current injection; a second conductive type first clad layer formed on said active layer; and a stripe-shaped second conductive type second clad layer formed on said second conductive type first clad layer in a first direction, in such a manner that the cross-sectional surface of said stripe-shaped second conductive type second clad layer in a direction perpendicular to said first direction has a shape having an upper edge and a lower edge that face each other and side edges that connect between said upper edge and said lower edge, where the minimum width thereof is at least 70% but no more than 100% of the maximum width.
    • 本发明提供一种半导体激光元件及其制造方法,以及多波长单片半导体激光器件,其能够在高输出电平下实现自持脉动,并在宽输出范围内实现自持脉动。 一种半导体激光元件,其在预定的输出区域中呈现自持脉动,所述半导体激光元件包括:基板; 形成在所述基板上的第一导电型覆盖层; 形成在所述第一导电型覆盖层上用于通过电流注入发光的有源层; 形成在所述有源层上的第二导电类型的第一覆盖层; 以及在第一方向上形成在所述第二导电型第一覆盖层上的条形第二导电型第二覆盖层,使得所述条形第二导电型第二覆层在垂直方向上的横截面 所述第一方向具有彼此面对的上边缘和下边缘以及连接在所述上边缘和所述下边缘之间的侧边缘的形状,其中最小宽度为至少70%但不大于100% 最大宽度。
    • 86. 发明申请
    • Preference information collecting system, device, method, and program
    • 优先信息收集系统,设备,方法和程序
    • US20070150452A1
    • 2007-06-28
    • US11547254
    • 2005-04-08
    • Kimiko TsurumakiTakuji MaekawaKotaro JinushiHirokazu Tanaka
    • Kimiko TsurumakiTakuji MaekawaKotaro JinushiHirokazu Tanaka
    • G06F17/30
    • G06F17/30867G06Q30/02H04W8/18
    • A preference-information gathering system is capable of gathering information on every commodity and/or every service, which are each of interest to a user, as user's preference information. The preference-information gathering system includes a user portable terminal (102) capable of storing a user identifier uniquely identifying the user, an information searching apparatus (104) and a preference-information management apparatus (114) for managing the information on preferences with the user. The information searching apparatus (104) has a search-information inputting unit (108) for requesting a user to enter search information to be used in a process to search for information desired by the user and a user-identifier acquisition unit (110) for acquiring a user identifier. The information searching apparatus (104) transmits information found in a search process requested by the user as the desired information on a commodity and/or a service and the user identifier to the preference-information management apparatus by associating the information and the identifier with each other.
    • 优选信息收集系统能够收集用户所喜爱的每个商品和/或每个服务的信息作为用户的偏好信息。 偏好信息收集系统包括能够存储唯一地识别用户的用户标识符的用户便携式终端(102),信息搜索装置(104)和偏好信息管理装置(114),用于管理关于偏好的信息 用户。 信息搜索装置(104)具有搜索信息输入单元(108),用于请求用户输入用于搜索用户期望的信息的处理中使用的搜索信息,以及用户标识符获取单元(110),用于 获取用户标识符。 信息搜索装置(104)通过将信息和标识符与每个信息相关联,将由用户请求的搜索进程中发现的信息作为关于商品和/或服务的期望信息和用户标识符发送给偏好信息管理装置 其他。
    • 88. 发明申请
    • Variable light attenuator
    • 可变光衰减器
    • US20060280421A1
    • 2006-12-14
    • US10566828
    • 2004-07-15
    • Hirokazu TanakaYoichi NakanishiRyuji KawamotoYuichi Suzuki
    • Hirokazu TanakaYoichi NakanishiRyuji KawamotoYuichi Suzuki
    • G02B6/26
    • G02B6/3524G02B6/266G02B6/32G02B6/359G02B6/3594G02B26/02
    • A lens array (38) is mounted on the front surface of an optical fiber array (32) holding optical fibers (35, 36) for input and emission. The lens array (38) includes: an input lens (40a) for converting a signal light (45) emitted from the optical fiber (35) into parallel light or converged light; and an output lens (40b) for converging the returned parallel light and connecting it to the optical fiber (36). A rectangular prism (34) having a form of a rectangular equilateral triangle is arranged in front of the optical fiber array (32) having the lens array (38). The signal light (45) emitted from the optical fiber (35) is totally reflected twice by the rectangular prism (34) and comes into the optical fiber (36). A transparent rectangular rotary block (33) is arranged between the lens array (38) and the rectangular prism (34). The outgoing signal light (45) and the returning signal light (45) have optical axis shifted by the rotary block (33) where the signal light passes. With this structure, it is possible to obtain a small-size variable light attenuator having a high control accuracy of the attenuation quantity of the signal light and a high resolution.
    • 透镜阵列(38)安装在保持用于输入和发射的光纤(35,36)的光纤阵列(32)的前表面上。 透镜阵列(38)包括:用于将从光纤(35)发射的信号光(45)转换成平行光或会聚光的输入透镜(40a); 以及用于会聚返回的平行光并将其连接到光纤(36)的输出透镜(40a)。 具有矩形等边三角形形状的矩形棱镜(34)布置在具有透镜阵列(38)的光纤阵列(32)的前面。 从光纤(35)发射的信号光(45)由矩形棱镜(34)全反射两次并进入光纤(36)。 在透镜阵列(38)和矩形棱镜(34)之间布置透明矩形旋转块(33)。 输出信号光(45)和返回信号光(45)具有由信号光通过的旋转块(33)移动的光轴。 利用这种结构,可以获得信号光的衰减量的高控制精度和高分辨率的小尺寸可变光衰减器。