公开(公告)号：US06885745B1

公开(公告)日：2005-04-26

申请号：US09213271

申请日：1998-12-17

申请人： Martin R. Handforth ,  Gerard J. Hupe ,  Donald S. McGinn ,  Rolf G. Meier ,  Canute Planthara ,  Raymond K. Wong

发明人： Martin R. Handforth ,  Gerard J. Hupe ,  Donald S. McGinn ,  Rolf G. Meier ,  Canute Planthara ,  Raymond K. Wong

IPC分类号： H04M3/00 ,  H04M3/18 ,  H04M19/00 ,  H04M3/12

CPC分类号： H04M3/18 ,  H04M3/005 ,  H04M19/001 ,  H04M2201/80

摘要： A protection arrangement for a telephone subscriber line interface circuit is disclosed. The arrangement is particularly useful for protecting an electronic telephone set from over-voltage and over-current fault conditions. The arrangement provides a FET that operates in saturation mode to connect an office battery to the subscriber line under normal operation. The FET also provides isolation capabilities for protecting the line circuit from an over-current condition on the subscriber line. Over-voltage protection is provided by way of an isolation relay between the line circuit and the subscriber line. Both the FET and isolation relay are operated by a controller that uses timers in the methods of over-voltage and over-current protection that it performs. A further capability of the arrangement is that it resets itself after the fault condition has ended. This feature is particularly useful in the case of fault conditions of short duration.

摘要翻译： 公开了一种用于电话用户线接口电路的保护装置。 该装置对于保护电子电话机免受过电压和过电流故障条件特别有用。 该装置提供了在饱和模式下操作的FET，以在正常操作下将办公室电池连接到用户线路。 FET还提供隔离功能，用于保护线路电路免受用户线上的过电流状态影响。 通过线路电路和用户线路之间的隔离继电器提供过电压保护。 FET和隔离继电器均由控制器操作，控制器使用其执行的过电压和过流保护方法中的定时器。 该装置的另一个能力是在故障状态结束之后它自动复位。 在短时间的故障情况下，该功能特别有用。

公开(公告)号：US20090222419A1

公开(公告)日：2009-09-03

申请号：US12094488

申请日：2006-12-05

申请人： Franky Lam ,  Raymond K. Wong

发明人： Franky Lam ,  Raymond K. Wong

IPC分类号： G06F17/30

CPC分类号： G06F16/81

摘要： Succinct data and index structures aim to maximize the efficiency of update and search operations on any data while setting the constraint of storage size to be close to the theoretical optimum. The succinct index structure of the invention indexes data represented in a hierarchical structure. The index is comprised of a symbol table of all distinct root-to-leaf paths as keys or unique element tag names as keys, wherein an entry for a key in the symbol table holds transformed topological information of nodes associated with the key together (FIG. 22) with an indication of the method of transformation used on the topological information (FIG. 17), and wherein the method of transformation used is based on the topological relationship between nodes that are associated with the key. The invention also concerns methods, computer systems and computer software for constructing, using and updating the succinct index structure.

摘要翻译： Succinct数据和索引结构旨在最大限度地提高对任何数据的更新和搜索操作的效率，同时将存储大小的约束设置为接近理论最优。 本发明的简洁索引结构索引以分层结构表示的数据。 索引由所有不同的根到叶路径的符号表构成键或作为键的唯一元素标签名，其中符号表中的密钥的条目保存与密钥相关联的节点的转换的拓扑信息（图 22），其具有对拓扑信息使用的变换方法的指示（图17），并且其中所使用的变换方法基于与该关键字相关联的节点之间的拓扑关系。 本发明还涉及用于构建，使用和更新简洁索引结构的方法，计算机系统和计算机软件。