公开(公告)号：US5990577A

公开(公告)日：1999-11-23

申请号：US047150

申请日：1998-03-24

申请人： Hideo Kamioka ,  Minoru Dendou ,  Yoshimi Kohda ,  Koji Kobayashi

发明人： Hideo Kamioka ,  Minoru Dendou ,  Yoshimi Kohda ,  Koji Kobayashi

IPC分类号： H02J7/00 ,  H02J9/06 ,  H04L12/10 ,  H04L12/44 ,  H02J3/02

CPC分类号： H04L12/10 ,  H02J7/0052 ,  H02J9/061 ,  H04L12/44 ,  Y10T307/367 ,  Y10T307/516 ,  Y10T307/625

摘要： A hub for a local area network according to one embodiment of the present invention includes a plurality of communication ports connected to each of nodes in the network, through which a signal is transmitted among the nodes, a signal processing circuit having at least the functions of repeating the signal among the nodes and reshaping a waveform thereof, and a power supply circuit for supplying a dc current for driving the signal processing circuit. The power supply circuit further comprises an ac/dc converter for converting an ac current applied from an external ac power supply without passing through a power switch thereto into a predetermined dc current and supplying the dc current to a load circuit including the signal processing circuit without passing through a power switch, a backup secondary battery, a charging circuit for trickle charging the dc current output from the ac/dc converter into the backup secondary battery, and a control circuit for opening and closing a current path for supplying an output current of the backup secondary battery to the load circuit.

摘要翻译： 根据本发明的一个实施例的用于局域网的集线器包括连接到网络中的每个节点的多个通信端口，通过它们在节点之间传输信号，信号处理电路至少具有以下功能： 在节点之间重复信号并重新形成其波形，以及用于提供用于驱动信号处理电路的直流电流的电源电路。 电源电路还包括用于将从外部交流电源施加的交流电流转换而不通过其中的电源开关到达预定直流电流并将直流电流提供给包括信号处理电路的负载电路的交流/直流转换器，而没有 通过电源开关，备用二次电池，用于将从AC / DC转换器输出的直流电流涓流充电到备用二次电池的充电电路，以及控制电路，用于打开和关闭用于提供输出电流的电流路径 备用二次电池到负载电路。