公开(公告)号：US06937569B1

公开(公告)日：2005-08-30

申请号：US09862049

申请日：2001-05-21

申请人： Shantanu Sarkar ,  Steven G. Fry ,  Johnny C. Chan

发明人： Shantanu Sarkar ,  Steven G. Fry ,  Johnny C. Chan

IPC分类号： G01R31/08 ,  H04L12/56

CPC分类号： H04L45/00

摘要： A method and system for determining a relative location of a device on a network is provided. In this system and method, a list of landmark nodes provided on the network is received. Then, a value which is a time, a latency and/or a distance from the device to each of the landmark nodes is determined. Each of the determined values corresponding to the respective node of the landmark nodes is transmitted to a central arrangement to provide the relative location of the device with respect to the landmark nodes.

摘要翻译： 提供了一种用于确定网络上的设备的相对位置的方法和系统。 在该系统和方法中，接收在网络上提供的地标节点的列表。 然后，确定作为时间的值，等待时间和/或从设备到每个地标节点的距离。 对应于地标节点的相应节点的确定值的每个被发送到中央布置，以提供设备相对于地标节点的相对位置。

公开(公告)号：US4504890A

公开(公告)日：1985-03-12

申请号：US601386

申请日：1984-04-17

申请人： Johnny C. Chan

发明人： Johnny C. Chan

IPC分类号： F21L4/00 ,  F21L4/04 ,  F21V33/00 ,  F21L7/00

CPC分类号： F21L4/04 ,  F21V33/0004

摘要： A compact form of torch which can resemble a lipstick in size and shape so that it can be carried in a handbag comprises a base rotatably supporting a sleeve to move torch between a retracted non-working position and a projecting position. A battery holder is axially movable by engagement of pins projecting from the holder into spiral grooves in the sleeve. A bulb holder is resiliently urged away from the battery holder and constrained to move axially corresponding to the movement of the battery holder except that the bulb holder reaches a stop position just before the battery holder reaches the projecting position so that slight further axial movement of the battery holder causes contact between the lamp carried by the lamp carrier and a battery carried by the battery holder to energize the lamp in the projecting position of the torch.

摘要翻译： 可以类似于尺寸和形状的口红的紧凑形式的手电筒可以携带在手提包中，包括可旋转地支撑套筒的基座，以在缩回的非工作位置和突出位置之间移动割炬。 电池座可以通过从保持器突出的销的接合而轴向移动到套筒中的螺旋槽中。 灯泡保持器被弹性地推动离开电池座，并且被限制为与电池座的运动轴向移动，除了在电池座到达突出位置之前灯泡保持器到达停止位置，使得稍微进一步的轴向移动 电池座使得灯托架携带的灯与由电池座承载的电池之间的接触使得在割炬突出位置上的灯发光。