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71. 发明申请

WO2004040329A2 SYSTEM AND METHOD FOR ESTIMATING CLOCK ACCELERATION AND LOCATION DETERMINATION 审中-公开
标题翻译：用于估计时钟加速度和位置确定的系统和方法
公开(公告)号：WO2004040329A2
公开(公告)日：2004-05-13
申请号：PCT/US2003/034454
申请日：2003-10-29
申请人： SIRF TECHNOLOGY, INC.
发明人： STONE, Jesse
IPC分类号： G01S13/00
CPC分类号： G01S1/02 , G01S1/04 , G01S5/14 , G01S13/00
摘要： A method and a system for a location determination (a) acquire a first positioning signal; (b) analyze the first positioning signal to provide an estimate of a clock signal acceleration; (c) acquire additional positioning signals based on the estimate of the clock signal acceleration; and (d) perform the location determination using the first positioning signal and the additional positioning signals. The additional positioning signals may be acquired using a stacking technique. The first positioning signal may be acquired based on a signal-to-noise ratio exceeding a predetermined threshold. Clock signal acceleration may be estimated using a constant clock signal acceleration parametric model, which may be parabolic model based on a function that dwpends on the clock signal acceleration, a clock Doppler and an initial phase value. Alternatively, grids of various granularity may be searched clock signal acceleration space and a clock Doppler space in the vicinity of a clock Doppler value measured in the acquisition of the first positioning signal.
摘要翻译：一种用于位置确定的方法和系统（a）获取第一定位信号; （b）分析第一定位信号以提供时钟信号加速度的估计; （c）基于时钟信号加速度的估计获得附加定位信号; 和（d）使用第一定位信号和附加定位信号执行位置确定。可以使用堆叠技术来获取附加的定位信号。可以基于超过预定阈值的信噪比来获取第一定位信号。可以使用恒定时钟信号加速度参数模型来估计时钟信号加速度，其可以是基于对时钟信号加速度的函数，时钟多普勒和初始相位值的抛物线模型。或者，可以搜索各种粒度的网格时钟信号加速空间和在获取第一定位信号时测量的时钟多普勒值附近的时钟多普勒空间。

72. 发明申请

WO1996015485A1 SECURITY APPARATUS AND METHOD 审中-公开
标题翻译：安全装置和方法
公开(公告)号：WO1996015485A1
公开(公告)日：1996-05-23
申请号：PCT/CA1995000646
申请日：1995-11-15
申请人： ABSOLUTE SOFTWARE CORPORATION , COTICHINI, Christian , CAIN, Fraser , NGUYEN, Thanh, Cam
发明人： ABSOLUTE SOFTWARE CORPORATION
IPC分类号： G06F01/00
CPC分类号： G06F12/1408 , G01S1/02 , G06F13/126 , G06F21/313 , G06F21/73 , G06F21/88 , G06F2221/2111 , H04L41/046 , H04L41/28 , H04L43/0817 , H04W12/12
摘要： A system for locating and monitoring electronic devices utilizing a security system that is secretly and transparently embedded within the software, firmware, or hardware of a computer. This security system causes the client computer to periodically and conditionally call a host system to report its serial number via an encoded series of dialed numbers. A host monitoring system receives calls from various clients and determines which calls to accept and which to reject. This determination is made by comparing the decoded client serial numbers with a predefined and updated list of numbers corresponding to reported stolen computers. Only calls from clients on the predefined list are accepted. The host also concurrently obtains the caller ID of the calling client to determine the physical location of the client computer. The caller ID, indicating the physical location of the stolen device, and the serial number are subsequently transmitted to a notifying station in order to facilitate the recovery of the stolen device. The security system remains hidden from the user, and actively resists attempts to disable it.
摘要翻译：一种利用秘密和透明地嵌入在计算机的软件，固件或硬件内的安全系统来定位和监视电子设备的系统。该安全系统使得客户端计算机周期性地有条件地呼叫主机系统以经编码的一系列拨号号码来报告其序列号。主机监控系统接收来自各种客户端的呼叫，并确定要接受的呼叫以及要拒绝的呼叫。通过将解码的客户端序列号与对应于报告的被盗计算机的预定和更新的号码列表进行比较来进行该确定。只接受来自预定义列表中客户端的呼叫。主机还同时获取主叫客户端的呼叫者ID，以确定客户端计算机的物理位置。随后将指示被盗设备的物理位置的呼叫者ID和序列号发送到通知站，以便于被盗设备的恢复。安全系统保持隐藏，并且主动阻止尝试将其禁用。

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