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    • 5. 发明申请
    • Preamble receiving apparatus
    • 前导码接收设备
    • US20080062935A1
    • 2008-03-13
    • US11702103
    • 2007-02-05
    • Takao NakagawaTsuyoshi ShimomuraRyusuke Kiryu
    • Takao NakagawaTsuyoshi ShimomuraRyusuke Kiryu
    • H04Q7/20
    • H04L7/042
    • Provided is a preamble receiving apparatus, including: a receiving unit receiving from a transmitting apparatus a frame having a format which contains a preamble section and a margin section subsequent to the preamble section; and a reception processing unit detecting a preamble signal which is transmitted in the preamble section in the transmitting apparatus from the received frame, wherein the reception processing unit includes: a correlation processing unit which defines as a search section a time having a predetermined starting point and which is equal to or shorter than the margin section, and creates a power profile for each of divided sections through a correlating process operation related to a plurality of divided sections obtained by dividing the search section; and a coupled profile creating unit for creating a coupled power profile by coupling the power profile for each of the divided sections to each other.
    • 提供一种前导码接收装置,包括:接收单元,从发送装置接收具有格式的帧,所述格式包含前导码部分和所述前导码部分之后的边缘部分; 以及接收处理单元,从接收到的帧检测在发送装置中的前导码部分中发送的前导信号,其中,所述接收处理单元包括:相关处理单元,其将具有预定起点的时间定义为搜索部分, 其等于或短于边缘部分,并且通过与通过划分搜索部分而获得的多个分割部分相关的相关处理操作来创建每个分割部分的功率分布; 以及耦合简档创建单元,用于通过将每个分割部分的功率分布彼此耦合来创建耦合的功率分布。
    • 7. 发明授权
    • Fibrous composite material and process for producing the same
    • 纤维复合材料及其制造方法
    • US06447893B2
    • 2002-09-10
    • US09308281
    • 1999-06-30
    • Shigeru HanzawaTakao Nakagawa
    • Shigeru HanzawaTakao Nakagawa
    • B32B1800
    • F16D69/023C04B35/573C04B35/806C04B41/009C04B41/5096F16D2200/0047Y10T428/249927Y10T428/249928Y10T428/249929Y10T428/24993C04B41/4523C04B41/4556C04B41/5059C04B14/386C04B30/02
    • A fiber-composite material (7) is comprised of a yarn aggregate (6) in which yam (2A, 2B) including at least a bundle (3) of carbon fiber and a carbon component other than carbon fiber is three-dimensionally combined and integrally formed without separation from each other; and a matrix made of Si—SiC-based materials (4A, 4B, 5A, 5B) filled between the yarn (2A, 2B) adjacent to each other within the yarn aggregate (6). A method of preparing fiber-composite material is comprised of the steps of: producing bundles (3) of carbon fiber by impregnating a component of powdery carbon into the bundles (3) of carbon fiber, which eventually forms a matrix shape; forming a plastic coat around the bundles (3) of carbon fiber to obtain an intermediate material; molding the intermediate material to obtain a molded product by making the intermediate material into a yarn-shape and laminating a predetermined amount of the material, or burning the molded product to obtain a burned product; holding the molded product or the burned product and Si, at 1100 to 1400° C. in an atmosphere of inert gas; and heating the molded product or the burned product and Si to a temperature from 1450 to 2500° C., to thereby impregnate Si—SiC-based material into the inside of pores of the molded product or the burned product. A light and strong composite material is provided, which has excellent shock resistance, corrosion resistance in a strong oxidation and corrosion environments, creep resistance, spalling resistance, wear resistance, a low friction coefficient and a self-restorative ability by which a defect is healed.
    • 纤维复合材料(7)由纱线聚集体(6)组成,其中包含至少一个碳纤维束(3)和除碳纤维之外的碳成分的纱线(2A,2B)三维组合, 整体形成而不分离; 以及填充在纱线集合体(6)内的彼此相邻的纱线(2A,2B)之间的由Si-SiC系材料(4A,4B,5A,5B)构成的基体。 制备纤维复合材料的方法包括以下步骤:通过将碳粉组分浸渍到最终形成基体形状的碳纤维束(3)中来生产碳纤维束(3); 在碳纤维束(3)周围形成塑料涂层以获得中间材料; 通过将中间材料制成纱线形状并层压预定量的材料,或者烧制成型产品以获得烧制品,来成型中间材料以获得模制品; 在惰性气体气氛中,在1100〜1400℃下保持成型品或烧成品和Si。 并将成型品或烧成品和Si加热至1450〜2500℃的温度,从而将Si-SiC系材料浸渍在成形品或烧成品的孔内。 提供了一种轻而强的复合材料,其具有优异的抗冲击性,在强氧化和腐蚀环境中的耐腐蚀性,抗蠕变性,抗剥落性,耐磨性,低摩擦系数和缺陷被愈合的自恢复能力 。