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    • 1. 发明授权
    • Data transfer method in function expansion system
    • 功能扩展系统中的数据传输方法
    • US06681260B1
    • 2004-01-20
    • US09553477
    • 2000-04-20
    • Kazuo Hagi
    • Kazuo Hagi
    • G06F1516
    • G06F13/124
    • A system and data transfer method capable of reducing the influence of data transfer upon processing of the software is disclosed. Access to the memory by each of the processor and the communication interfaces is managed by a scheduler. When storing data received from a communication interface into the memory, a message converter receives a reception completion message from the communication interface and converts it to a transmission request message when determining that the data having stored in the memory is data to be sent to another communication interface. When receiving the transmission request message, the other communication interface reads the data from the memory.
    • 公开了一种能够减少数据传输对软件处理的影响的系统和数据传输方法。 每个处理器和通信接口对存储器的访问由调度器管理。 当将从通信接口接收的数据存储到存储器中时,消息转换器从通信接口接收接收完成消息,并且当确定存储在存储器中的数据是要发送到另一通信的数据时,将其转换为传输请求消息 接口。 当接收到传输请求消息时,另一个通信接口从存储器读取数据。
    • 2. 发明授权
    • Protection switching system having impedance matching circuits
    • 具有阻抗匹配电路的保护开关系统
    • US5638358A
    • 1997-06-10
    • US429528
    • 1995-04-26
    • Kazuo Hagi
    • Kazuo Hagi
    • H04L1/22H04B1/74H04J3/14H04Q3/00
    • H04J3/14H04B1/74H04Q3/00
    • In a protection switching system for N working transmission systems and a spare transmission system, first to Nth protection switches (11-1.about.11-n) am provided corresponding respectively to the N working transmission systems (21-1.about.21-n). Each protection switch includes a forward/backward impedance matching circuit (30, 31) and first, second and third pairs of terminals (c, d; h, i; g, j), the first pair terminals (c, b) of each protection switch (11) being connected to the corresponding working transmission system. The second pair terminals (h, i) of each of the first to (N-1)th protection switches are connected respectively to the third pair terminals (g, J) of the second to Nth protection switches, the second pair terminals (h, 1) of the first protection switch being connected to the spare transmission system (20), and the third Fair terminals (g, j) of the Nth protection switch being connected together. In each protection switch, a first two-way connection (22, 23) is established between the forward/backward impedance matching circuit and the first pair terminals (c, d) and a second two-way connection (24, 25) between the second pair terminals (h, i) and the third pair terminals (g, i) when the corresponding working system is working properly. When the corresponding working system is not working properly, the first two-way connection (22, 23) and the second two-way connection (24, 25) are cleared and a third two-way connection (22a, 23a) is established between the forward/backward matching circuits and the third pair terminals (g, j).
    • 在N个工作传输系统和备用传输系统的保护交换系统中,分别提供对应于N个工作传输系统(21-1差分21-n)的第一至第N保护开关(11-1差分11-n)。 每个保护开关包括前向/后向阻抗匹配电路(30,31)和第一,第二和第三对端子(c,d; h,i; g,j),每个端子的第一对端子(c,b) 保护开关(11)连接到相应的工作传输系统。 第一至第(N-1)个保护开关的第二对端子(h,i)分别连接到第二至第N保护开关的第三对端子(g,J),第二对端子(h ,1)连接到所述备用传输系统(20),并且所述第N保护开关的第三Fair端子(g,j)连接在一起。 在每个保护开关中,在正向/反向阻抗匹配电路和第一对端子(c,d)之间建立第一双向连接(22,23),在第二双向连接(24,25)之间建立第二双向连接 第二对终端(h,i)和第三对终端(g,i)。 当相应的工作系统不能正常工作时,第一双向连接(22,23)和第二双向连接(24,25)被清除,并且在第二双向连接(22,23)和 前向/后向匹配电路和第三对端子(g,j)。