Abstract: The present invention is directed to an electrical contact that incorporates a movable metal connection component such as a contact pin. The metal connection component is mounted within an insulating body. An electrically conducting path, from a contact head of the metal connection component to an interior of a base chassis is created only when a handset has been positioned within a cradle cavity of the base.

Abstract: The present invention is directed to an electrical contact that incorporates a movable metal connection component such as a contact pin. The metal connection component is mounted within an insulating body. An electrically conducting path, from a contact head of the metal connection component to an interior of a base chassis is created only when a handset has been positioned within a cradle cavity of the base.

Abstract: A method for optimal track assignment in a grid-based channel router. Initially, interconnection information is extracted from a global routing result. Multiple pin nets derived from the interconnection information are decomposed into simpler mapped segments. A channel grid map is then built and marked with existing objects. Next, a vertical constraint graph specifying the relative positions of the mapped segments is constructed. A first track is computed. A track assignment loop is repeated until all requisite connections are realized. The track assignment loop includes the steps of breaking cycles and long paths and collecting a set of feasible links. One or more weighting functions are assigned to each such feasible link. A dynamic programming approach is used to select an optimal set of feasible links according to the weighting functions. In addition, an optimal set of feasible links corresponding to unpreferred layers is collected by applying dynamic programming.

Abstract: In a grid-based channel router, a method for handling variable width wires. The user initially specifies the widths of the wires. In this manner, wider wires may be selected for special nets, such as those used for routing clock signals, whereas narrower wires are used for normal nets in order to minimize the die size. A refined grid map is generated. This refined grid map consists of extra rows and columns for marking the variable width wires. These extra rows and columns are spaced as a function of the wire width and are marked the same as with normal rows and columns. Before a wire is placed, the affected rows or columns are checked for any violations. If there are no violations, the wire is placed and the appropriate rows or columns are marked. Due to the extra rows and columns, the problems associated with overmarking and undermarking variable width wires are avoided.