公开(公告)号：US4921129A

公开(公告)日：1990-05-01

申请号：US217303

申请日：1988-07-11

申请人： K. Tom Jones ,  Richard J. Caldwell

发明人： K. Tom Jones ,  Richard J. Caldwell

IPC分类号： A47L15/44 ,  D06F39/02 ,  G01F23/24

CPC分类号： G01F23/242 ,  A47L15/44 ,  D06F39/022 ,  Y10T137/8342

摘要： A disposable liquid dispensing module in the form of a hollow plastic container for holding liquid, such as a cleaning solution or soap, has at least one liquid level sensing probe permanently mounted in it. The module is made to be inserted into a lavage machine or similar apparatus and includes a connector to which a connection plug having a liquid withdrawal pipe and connectors to the liquid level sensing probe is attached. The pipe is connected to an elongated flexible tube and the connectors for the liquid level sensing probe are connected to flexible wires, so that the plug including these components may be attached to the container outside the lavage machine in which it is used. When the level of liquid falls below a predetermined threshold, a signal is provided to the apparatus indicating that replacement of the container is to be made. The entire module then is withdrawn and the plug to the apparatus is disconnected. The original module is discarded and a new module filled with cleaning solution is attached to the plug and placed in the machine.

摘要翻译： 用于保持液体（例如清洁溶液或肥皂）的中空塑料容器形式的一次性液体分配模块具有永久安装在其中的至少一个液位感测探头。 将模块插入灌洗机或类似装置中，并且包括连接器，连接有连接插头的连接插头，其具有液体取出管和连接到液位传感探针的连接器。 该管连接到细长的柔性管，并且用于液位传感探针的连接器连接到柔性线，使得包括这些部件的塞子可以附接到使用它的灌洗机外部的容器。 当液位低于预定阈值时，向装置提供指示要更换容器的信号。 然后将整个模块取出，并将连接到设备的插头断开。 将原始模块丢弃，并将装有清洁溶液的新模块连接到插头并放置在机器中。

公开(公告)号：US07650115B2

公开(公告)日：2010-01-19

申请号：US10550337

申请日：2004-03-16

申请人： Richard J. Caldwell ,  Adrian W. Payne

发明人： Richard J. Caldwell ,  Adrian W. Payne

IPC分类号： H04B1/00

CPC分类号： H04W48/02

摘要： A method of protecting an apparatus from radio frequency interference, comprises a policing terminal (PT) detecting the presence of an interfering radio terminal (16) in the protected environment and actively rendering ineffective or terminating transmissions by the interfering radio terminal. Various options can be followed by the policing terminal (PT) including (a) attempting to become the master station of a network of which the interfering terminal is a member and instructing the members to close down or (b) failing to become the master station and transmitting interference signals for at least a selected portion, for example preamble and sync, of the duration of a data packet transmitted by the interfering station.

摘要翻译： 一种保护设备免受射频干扰的方法包括：在受保护环境中检测干扰无线终端（16）的存在的监管终端（PT），并且主动地使干扰无线电终端无效或终止传输。 监管终端（PT）可以遵循各种选项，包括（a）试图成为干扰终端成员的网络的主站，并指示成员关闭或（b）不成为主站 以及传送由干扰站发送的数据分组的持续时间的至少一个选定部分的干扰信号，例如前同步码和同步信号。

公开(公告)号：US07729317B2

公开(公告)日：2010-06-01

申请号：US10535802

申请日：2003-11-14

申请人： Adrian W. Payne ,  Richard J. Caldwell

发明人： Adrian W. Payne ,  Richard J. Caldwell

IPC分类号： H04W4/00

CPC分类号： H04B7/0811 ,  H04B7/0814

摘要： An antenna diversity receiver has a low-IF receiving mode and a diversity selection mode, and a switch arrangement for coupling one of the antennas to the IF channels when in the receiving mode, and coupling each of the channels to a different one of the antennas in the selection mode. A diversity controller compares qualities of signals received simultaneously from the different antennas during the selection mode, and controls the switch arrangement in the receiving mode, to use the better antenna. The quality measurement is carried out during reception of a carrier before a preamble to a desired signal is received, so that there is more time to obtain a better signal quality measurement and to enable better averaging over time. The channels have a polyphase filter with switchable cross coupling between the channels, so that it acts as two independent low pass filters in the selection mode.

摘要翻译： 天线分集接收机具有低IF接收模式和分集选择模式，以及用于当处于接收模式时将天线中的一个耦合到IF信道并将每个信道耦合到天线中的不同天线的开关装置 在选择模式下。 分集控制器比较在选择模式期间从不同天线同时接收的信号的质量，并且在接收模式下控制开关装置，以使用更好的天线。 在接收到期望信号的前导码之前，在接收载波期间进行质量测量，使得有更多的时间来获得更好的信号质量测量并且使得能够随时间更好地平均。 通道具有多通道滤波器，在通道之间具有可切换的交叉耦合，使其在选择模式下充当两个独立的低通滤波器。

公开(公告)号：US07167454B2

公开(公告)日：2007-01-23

申请号：US09773418

申请日：2001-02-01

申请人： Richard J. Caldwell ,  Robert Fifield ,  David H. Evans

发明人： Richard J. Caldwell ,  Robert Fifield ,  David H. Evans

IPC分类号： H04B7/005

CPC分类号： H04L27/2655 ,  H04B7/2656 ,  H04L27/2657 ,  H04L27/2666

摘要： In a radio communication system comprising a plurality of stations (100a,100b,100c) operating in a peer-to-peer mode, each station stores information relating to the transmission parameters of other stations. Such information may include the frequency offset and received signal strength of signals from the other stations. One station acts as central controller and allocates time slots for transmission from a first station (100a) to a second station (100b). Before the first station (100a) receives a signal from the second station (100b) it makes initial adjustments to its receiver circuitry depending on the stored information about previous signals received from that station (100b). This simplifies the task of adjusting the receiver circuitry during the preamble of the signal transmitted by the second station (100b).

摘要翻译： 在包括以对等模式操作的多个站（100a，100b，100c）的无线电通信系统中，每个站存储与其他站的传输参数有关的信息。 这样的信息可以包括来自其他站的信号的频率偏移和接收信号强度。 一个站作为中央控制器并且分配用于从第一站（100a）到第二站（100b）的传输的时隙。 在第一站（100a）接收到来自第二站（100b）的信号之前，根据从该站接收的先前信号的存储信息（100b），对其接收机电路进行初始调整。 这简化了在由第二站（100b）发送的信号的前导码段期间调整接收机电路的任务。

公开(公告)号：US06757267B1

公开(公告)日：2004-06-29

申请号：US09291441

申请日：1999-04-13

申请人： David H. Evans ,  Kevin R. Boyle ,  Richard J. Caldwell

发明人： David H. Evans ,  Kevin R. Boyle ,  Richard J. Caldwell

IPC分类号： H04Q700

CPC分类号： H04B7/0615 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/086

摘要： An antenna diversity system includes at least two antennas. Each antenna may be connected via a common connection point to a receiver by a respective switch which presents a low impedance connection between the antenna and receiver in the on state and a substantially reactive load to the antenna in the off state. Selection of appropriate impedances for the off state load enables the antennas to function as an array with a variety of beam patterns depending on the state of the switches. Cycling through a sequence of switch states steers the antenna beam providing improved resistance to fading and multipath effects. Alternatively, the antennas may be connected to a hybrid coupler, which enables two beam patterns to be available simultaneously for signal quality measurement and comparison.

摘要翻译： 天线分集系统包括至少两个天线。 每个天线可以通过相应的开关经由公共连接点连接到接收器，该开关在处于导通状态的天线和接收器之间呈现低阻抗连接，并且在断开状态下对天线施加基本上无功的负载。 选择关闭状态负载的适当阻抗使得天线能够根据开关的状态作为具有各种波束图案的阵列。 通过一系列开关状态循环来引导天线波束，提供对衰落和多径效应的改进的阻抗。 或者，天线可以连接到混合耦合器，其使两个波束图案可以同时可用于信号质量测量和比较。