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    • 6. 发明授权
    • Optical fiber
    • 光纤
    • US07164835B2
    • 2007-01-16
    • US11244195
    • 2005-10-06
    • Shoichiro MatsuoKuniharu HimenoKoichi HaradaMasataka Ikeda
    • Shoichiro MatsuoKuniharu HimenoKoichi HaradaMasataka Ikeda
    • G02B6/036
    • G02B6/02009G02B6/0365G02B6/03672G02B6/03688
    • An optical fiber includes: a core at a center; a first cladding layer; a second cladding layer; and a third cladding layer. A maximum refractive index of the core is greater than any of maximum refractive indices of the first cladding layer, the second cladding layer, and the third cladding layer, and the maximum refractive index of the second cladding layer is smaller than any of the maximum refractive indices of the first and the third cladding layer. Additionally, a ratio of a2/a1 is not less than about 2.5 and not more than about 4.5, where a1 represents the radius of the core, and a2 represents the radius of an outer periphery of the first cladding layer, and a relative refractive index difference of the core with respect to a maximum refractive index of the third cladding layer is not less than 0.20% and not more than 0.70%.
    • 光纤包括:中心的芯; 第一包层; 第二覆层; 和第三覆层。 芯的最大折射率大于第一包层,第二包层和第三包层的最大折射率中的任何一个,并且第二包层的最大折射率小于任何最大折射率 第一和第三包层的指数。 此外,2×2 / a <1的比例不小于约2.5且不大于约4.5,其中1表示芯的半径,而2 表示第一包层的外周的半径,芯相对于第三包层的最大折射率的相对折射率差为0.20%以上且0.70%以下。
    • 8. 发明申请
    • CORE NETWORK AND COMMUNICATION SYSTEM
    • 核心网络和通信系统
    • US20130246052A1
    • 2013-09-19
    • US13884526
    • 2011-11-10
    • Itsuma TanakaMasataka IkedaKazuhito Tokunaga
    • Itsuma TanakaMasataka IkedaKazuhito Tokunaga
    • G10L19/00
    • G10L19/00H04L65/1016H04L65/605H04L69/24H04W8/26H04W88/181
    • A core network connected to a mobile communication network and establishing voice communication between communication apparatuses receives a connection request that includes an identifier identifying a terminating communication apparatus, from the mobile communication network, to which an originating mobile communication apparatus is connected, and temporarily signals a first codec candidate that should be used by the originating mobile communication apparatus to the originating mobile communication apparatus. Then, the core network determines at least one codec that can be used in the terminating communication apparatus. When the codec that can be used in the terminating network is different from the codec to be used, which is temporarily selected to be actually used in the originating mobile communication apparatus, the core network specifies a second codec candidate that should be used in the originating mobile communication apparatus according to the codec that can be used in the terminating communication apparatus and signals the second codec candidate to the originating mobile communication apparatus.
    • 连接到移动通信网络并在通信设备之间建立语音通信的核心网络从源移动通信设备连接的移动通信网络接收包括标识终端通信设备的标识符的连接请求,并临时发信号 应该由起始移动通信装置用于始发移动通信装置的第一编解码候选。 然后,核心网络确定可以在终端通信装置中使用的至少一个编解码器。 当可以在终端网络中使用的编解码器与暂时选择为在起始移动通信装置中实际使用的编解码器不同时,核心网络指定应该在始发中使用的第二编解码器候选 移动通信装置,其可以在终端通信装置中使用,并将第二编解码候选信号发送给发起移动通信装置。