Low power flip-flop circuit and operation
    2.
    发明授权
    Low power flip-flop circuit and operation 失效
    低功耗触发电路和操作

    公开(公告)号:US07518426B1

    公开(公告)日:2009-04-14

    申请号:US11725047

    申请日:2007-03-16

    申请人: Geoffrey J. Smith

    发明人: Geoffrey J. Smith

    IPC分类号: H03K3/356

    摘要: A low power flip-flop circuit and its operation are described. In one example, the circuit includes a clocked gate for producing an output in response to an input when a clock is received, and a clock control circuit to receive the clock and the input, to determine whether the output will be changed by the input and to provide the clock to the clocked gate if the output will be changed by the input.

    摘要翻译: 描述了低功率触发器电路及其操作。 在一个示例中,电路包括用于当接收时钟时响应于输入产生输出的时钟门和用于接收时钟和输入的时钟控制电路,以确定输出是否将被输入改变,以及 如果输出将被输入改变,则将时钟提供给时钟门。

    Location determination method and system for asset tracking devices
    3.
    发明授权
    Location determination method and system for asset tracking devices 失效
    资产追踪装置的位置确定方法和系统

    公开(公告)号:US07315281B2

    公开(公告)日:2008-01-01

    申请号:US11194116

    申请日:2005-07-30

    IPC分类号: G01S3/02

    摘要: A method of determining a geographical location of an asset tracking device, includes searching, by the asset tracking device, for available location determination schemes at the geographical location, selecting one of the available location determination schemes, and determining coordinates of the geographical location using the selected location determination scheme. Some embodiments also include making a decision based, at least in part, upon the geographical location coordinates determined by using the selected location determination scheme. Some embodiments include transmitting a location message, the location message including the coordinates of the geographical location and an indication as to the selected location determination scheme.

    摘要翻译: 一种确定资产跟踪装置的地理位置的方法,包括由资产跟踪装置搜索地理位置处的可用位置确定方案,选择可用位置确定方案之一,以及使用该方法确定地理位置的坐标 选定位置确定方案。 一些实施例还包括至少部分地基于通过使用所选择的位置确定方案确定的地理位置坐标进行决定。 一些实施例包括发送位置消息,包括地理位置的坐标的位置消息和关于所选择的位置确定方案的指示。

    Coarse and fine location for tagged items
    4.
    发明申请
    Coarse and fine location for tagged items 审中-公开
    标记物品的粗细位置

    公开(公告)号:US20080157970A1

    公开(公告)日:2008-07-03

    申请号:US11725046

    申请日:2007-03-16

    IPC分类号: G08B13/14 G08B1/08

    摘要: The location of an item may be determined by first determining a coarse location and then a fine location. In one example, a coarse position of a tagged item is determined using a coarse positioning system and the item's tag. A mobile unit, carrying a fine positioning system, is moved to the determined coarse position. Then, a fine position of the tagged item is determined by communicating between the fine positioning system of the moved mobile unit and the item's tag.

    摘要翻译: 项目的位置可以通过首先确定粗略位置,然后确定精细位置来确定。 在一个示例中,使用粗定位系统和项目的标签来确定标记项目的粗略位置。 携带精细定位系统的移动单元被移动到确定的粗略位置。 然后,通过移动的移动单元的精细定位系统和项目的标签之间的通信来确定标记的项目的精细位置。

    Methods and apparatus of meshing and hierarchy establishment for tracking devices
    5.
    发明授权
    Methods and apparatus of meshing and hierarchy establishment for tracking devices 失效
    跟踪装置的网格划分和层次建立的方法和装置

    公开(公告)号:US07212122B2

    公开(公告)日:2007-05-01

    申请号:US11026172

    申请日:2004-12-29

    IPC分类号: G08B13/14

    摘要: Devices, such as tracking devices, cooperate with one another to establish the routing necessary for a relay network in which a device having power-efficient and data-reliable communication with an access portal, operates to relay messages from devices which do not have an acceptable communication path to and/or from the access portal. In one aspect of the present invention, a plurality of devices synchronously determine whether an acceptable communication path can be established between themselves and one or more access portals by measuring the signal strength of an access portal beacon. In another aspect of the present invention, one or more devices, which have determined that an acceptable communication path can be established between themselves and an access portal, transmit information regarding their availability to relay messages on behalf of devices which have determined that an acceptable communication path cannot be established between themselves and an access portal.

    摘要翻译: 诸如跟踪设备的设备彼此协作以建立中继网络所需的路由,其中​​具有与接入门户的功率高效且数据可靠的通信的设备操作以中继来自不具有可接受的设备的消息 到和/或从访问门户的通信路径。 在本发明的一个方面,多个设备通过测量接入门户信标的信号强度同步地确定它们之间和一个或多个接入入口之间是否可以建立可接受的通信路径。 在本发明的另一方面,一种或多种已经确定可以在自己和访问门户之间建立可接受的通信路径的设备代表已经确定可接受通信的设备传送关于其可用性的信息以中继消息 路径无法在自己和访问门户之间建立。