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    • 1. 发明授权
    • Wireless transmission apparatus and wireless transmission method
    • 无线传输装置和无线传输方法
    • US07545791B2
    • 2009-06-09
    • US10584495
    • 2004-12-20
    • Rahul MalikPek Yew TanDaichi ImamuraKatsuyoshi Naka
    • Rahul MalikPek Yew TanDaichi ImamuraKatsuyoshi Naka
    • H04J1/00
    • H04L5/06H04L27/2602
    • A wireless transmission apparatus that improves throughput in a wireless communication network system. In this apparatus, MT units of transmission/reception sections (122-1 to 122-MT) respectively correspond to MT units of antennas (121-1 to 121-MT) and transmit a preamble signal and a data signal via corresponding antennas (121-1 to 121-MT). MT units of transmission/reception sections (122-1 to 122-MT) use subcarriers allocated per antennas (121-1 to 121-MT) out of subcarriers (141, 142, 143 and 144) in preamble signal transmission. Furthermore, MT units of transmission/reception section (122-1 to 122-MT) use a subcarrier (140) having a frequency different from subcarriers (141, 142, 143 and 144) in data signal transmission.
    • 一种提高无线通信网络系统中的吞吐量的无线传输装置。 在该装置中,发送/接收部分(122-1至122-MT)的MT单元分别对应于MT单元天线(121-1至121-MT),并通过相应的天线(121)发送前导码信号和数据信号 -1至121-MT)。 发送/接收部分(122-1至122-MT)的MT单元在前导码信号传输中使用子载波(141,142,143和144)中每天分配的子载波(121-1至121-MT)。 此外,发送/接收部分(122-1至122-MT)的MT单元在数据信号传输中使用具有与子载波(141,142,143和144)不同的频率的副载波(140)。
    • 3. 发明授权
    • Optical information processor
    • 光信息处理器
    • US07522484B2
    • 2009-04-21
    • US11274914
    • 2005-11-15
    • Yuuichi Takahashi
    • Yuuichi Takahashi
    • G11B7/00
    • G11B7/1263
    • An optical information processor reads information from a storage medium or writes information on a storage medium by irradiating it with light radiated from a light source. The processor includes: the light source for radiating the light; a condensing element for converging the light, radiated from the light source, toward the storage medium; and a detector for detecting a portion of the light radiated from the light source. Supposing that in a far-field pattern of the light radiated from the light source, an aperture area A is defined by a portion of the light entering the condensing element and a photosensitive area B is defined by another part of the light entering the detector and that the light has the narrower angle of radiation in an x direction and the wider angle of radiation in a y direction, respectively, the center of the photosensitive area B in the x direction is offset with respect to that of the far-field pattern in the x direction.
    • 光学信息处理器从存储介质读取信息,或者通过用光源照射的光将信息写入存储介质上。 处理器包括:用于照射光的光源; 用于将从光源辐射的光朝向存储介质聚光的聚光元件; 以及用于检测从光源辐射的光的一部分的检测器。 假设在从光源辐射的光的远场图案中,孔径区域A由进入聚光元件的光的一部分限定,并且光敏区域B由进入检测器的光的另一部分限定, 光在x方向上具有较窄的辐射角,并且在a方向上具有较宽的辐射角,则在x方向上的感光区B的中心相对于远场图案的x方向偏移 x方向。