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1. 发明授权

US4571721A Composite concentration system 失效
标题翻译：复合浓度系统
公开(公告)号：US4571721A
公开(公告)日：1986-02-18
申请号：US418898
申请日：1982-09-16
申请人： Tadahiko Yasui , Shizuo Ito , Akira Horiki , Hajime Yamada , Takashi Usami
发明人： Tadahiko Yasui , Shizuo Ito , Akira Horiki , Hajime Yamada , Takashi Usami
IPC分类号： H04Q3/545 , H04Q3/60 , H04Q11/04
CPC分类号： H04Q11/04
摘要： In a composite concentration system of the type utilizing a time division system in which voice signals are digitized and then concentrated in a traffic, there are provided a first subscriber line interface means of a first type which connects subscriber lines directly to subscriber line interface circuits, a second subscriber line interface means of a second type which connects subscriber lines to subscriber line interface circuits via a space division concentration switch and a time division concentration switch connected to the first and second subscriber line interface means via switching interfaces. The number of output terminals of the first subscriber line interface means is equal to that of the output terminals of the second subscriber line interface means when a concentration ratio of the space division concentration switch to the second subscriber line interface means is 1:1 and corresponding output terminals are constructed such that the same channel is assigned to the time division concentration switch. The composite concentration system of this invention is inexpensive and can readily expand a telephone system according to a variation in percentage of calls or change in a service performance.
摘要翻译：在使用语音信号被数字化然后集中在业务中的时分系统的类型的复合浓度系统中，提供了将用户线直接连接到用户线路接口电路的第一类型的第一用户线路接口装置，第二类型的第二用户线接口装置，其经由经由切换接口连接到第一和第二用户线接口装置的空分集中开关和时分集中开关将用户线连接到用户线路接口电路。当空间分配浓度开关与第二用户线接口装置的浓度比为1:1时，第一用户线接口装置的输出端数量与第二用户线接口装置的输出端的数量相等输出端子被构造为使得相同的通道被分配给时分浓度开关。本发明的复合浓缩系统是廉价的，并且可以根据呼叫百分比的变化或服务性能的变化容易地扩展电话系统。

2. 发明授权

US5319485A Wavelength-assignable optical communication system 失效
标题翻译：波长分配光通信系统
公开(公告)号：US5319485A
公开(公告)日：1994-06-07
申请号：US878487
申请日：1992-05-05
申请人： Tadahiko Yasui , Aritomo Uemura
发明人： Tadahiko Yasui , Aritomo Uemura
IPC分类号： H04J14/00 , H04B10/077 , H04B10/27 , H04J14/02 , H04Q11/00
CPC分类号： H04Q11/0001 , H04J14/0227 , H04J14/0282
摘要： An optical communication system comprising a plurality of optical signal communication paths, and a plurality of terminals coupled to the plurality of communication paths. A connection request is made by a calling terminal to a called terminal with an optical signal at a control wavelength via the communication path. A wavelength control unit monitors the communication paths and in response to the connection request signal selects an optical signal wavelength to be used by the terminals, out of any unused wavelengths on the communication paths. Further, the wavelength control unit informs the calling and called terminals of the selected wavelength via a wavelength information optical signal at the control wavelength. The calling and called terminals, responsive to the wavelength information signal, set their transmitting and receiving wavelength to the selected unused wavelength.
摘要翻译：一种光通信系统，包括多个光信号通信路径，以及耦合到所述多个通信路径的多个终端。呼叫终端通过通信路径通过具有控制波长的光信号向被叫终端进行连接请求。波长控制单元监视通信路径，并且响应于连接请求信号，在通信路径上的任何未使用的波长中选择要被终端使用的光信号波长。此外，波长控制单元通过控制波长的波长信息光信号通知所选择的波长的主叫和被叫终端。响应于波长信息信号的呼叫和被叫终端将其发射和接收波长设置为所选择的未使用波长。

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