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31. 发明授权

US5088112A Interface unit 失效
标题翻译：界面单元
公开(公告)号：US5088112A
公开(公告)日：1992-02-11
申请号：US435446
申请日：1989-11-21
申请人： Seppo Pyhalammi , Matti Reini
发明人： Seppo Pyhalammi , Matti Reini
IPC分类号： G06F3/00 , H04J3/16 , H04L29/06 , H04L29/10
CPC分类号： H04J3/1682 , H04L29/06
摘要： The invention relates to an interface unit intended to be connected to a parallel connection of a data communication equipment (DCE) or a terminal equipment (DTE). The interface unit comprises multiplexers means (52, 54) for multiplexing connection signals to serial form and vice versa. In the invention, the multiplexers means (52, 54) are connected to parallel connection signals through I/O device (51) comprising an I/O line (L1 . . . L16) for each connection signal. At least some of the I/O lines are automatically selectable as an input or an output and/or connectable to at least two alternative inputs or outputs in the multiplexer (52, 54) for achieving cross-connections, depending on whether the interface is connected to the terminal equipment (DTE) or to the data communication equipment (DCE).
摘要翻译：本发明涉及一种旨在连接到数据通信设备（DCE）或终端设备（DTE）的并行连接的接口单元。接口单元包括多路复用器装置（52,54），用于将连接信号复用为串行形式，反之亦然。在本发明中，复用器装置（52,54）通过包括用于每个连接信号的I / O线（L1 ... L16）的I / O设备（51）连接到并行连接信号。至少一些I / O线可以自动地选择为输入或输出，和/或可连接到多路复用器（52,54）中的至少两个替代输入或输出，以实现交叉连接，取决于接口是否是连接到终端设备（DTE）或数据通信设备（DCE）。

32. 发明授权

US4807283A Method for adjusting the balancing impedance of a hybrid junction 失效
标题翻译：调整混合结的平衡阻抗的方法
公开(公告)号：US4807283A
公开(公告)日：1989-02-21
申请号：US874007
申请日：1986-06-12
申请人： Seppo Pyhalammi
发明人： Seppo Pyhalammi
IPC分类号： H04B1/58
CPC分类号： H04B1/585
摘要： A method for adjusting the balancing impedance of a hybrid junction for maximization of the hybrid attenuation within the range between two operating frequencies, an upper and a lower one, when using a balancing impedance formed by two series-connected resistors (R.sub.1, R.sub.2) and a capacitor (C.sub.1) connected in parallel with one of said resistors. For the achievement of an optimal matching of the balancing impedance with the impedance of the line wo which the hybrid junction is connected to when all components of the balancing impedance are adjusted, the method according to the invention is effected in such a manner that (a) the first resistor (R.sub.1) is adjusted for the maximization of the hybrid attenuation at the upper frequency, (b) the capacitor (C.sub.1) is adjusted for the maximization of the hybrid attenuation at the upper frequency, (c) the second resistor (R.sub.2) is adjusted for the maximization of the hybrid attenuation at the lower frequency, (d) the first resistor (R.sub.1) is readjusted for the maximization of the hybrid attenuation at the lower frequency, (e) the second resistor (R.sub.2) is readjusted for the maximization of the hybrid attenuation at the lower frequency, and (f) the capacitor (C.sub.1) is readjusted for the maximization of the hybrid attenutation within the whole range of operating frequencies, with an eventual weighing of certain frequencies. (FIG. 8)
摘要翻译：一种用于调整混合结的平衡阻抗的方法，用于当使用由两个串联连接的电阻器（R1，R2）形成的平衡阻抗和两个串联连接的电阻器（R1，R2）形成的平衡阻抗时，在两个工作频率（上和下）之间的范围内最大化混合衰减; 与所述电阻器之一并联连接的电容器（C1）。为了在调整平衡阻抗的所有分量时实现平衡阻抗与混合结连接到的线Wo的阻抗的最佳匹配，根据本发明的方法以（a 调整第一电阻器（R1）以使其在较高频率处的混合衰减最大化，（b）调整电容器（C1）以使其在较高频率处的混合衰减最大化，（c）第二电阻器（d）为了使较低频率的混合衰减最大化，第一电阻器（R1）被重新调整，（e）第二电阻器（R2）被重新调整为了使较低频率下的混合衰减最大化，（f）重新调整电容器（C1）以在整个工作频率范围内最大化混合衰减，最终称重o f某些频率。（图。

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