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    • 21. 发明授权
    • High sensitivity GLONASS/GPS automatic frequency control
    • 高灵敏度GLONASS / GPS自动频率控制
    • US08754809B2
    • 2014-06-17
    • US13041312
    • 2011-03-04
    • Hao ZhouHao-Jen ChengQinfang Sun
    • Hao ZhouHao-Jen ChengQinfang Sun
    • G01S19/24G01S19/21G01S19/29
    • G01S19/29
    • Updates to an AFC loop can be performed to provide high-sensitivity tracking. A 20 ms update interval and PDI=10 ms is used for every other update. A setting is used for each update between the 20 ms updates. Notably, the setting uses PDI=5 ms. The setting can include first, second, and third cross-dot pairs associated with a first bit, a second bit, and a cross-bit boundary between the first and second bits, respectively. A sum of these pairs can be scaled down when the signal strength is below a predetermined threshold. In another embodiment, the setting can include a first cross-dot pair associated with a first bit and a second cross-dot pair associated with a second bit. A sum of these pairs can also be scaled down when signal strength is below a predetermined threshold.
    • 可以执行AFC循环的更新以提供高灵敏度跟踪。 每隔一个更新使用20 ms的更新间隔和PDI = 10 ms。 每个20 ms更新之间的更新使用一个设置。 值得注意的是,该设置使用PDI = 5 ms。 该设置可以分别包括与第一位,第二位和第一和第二位之间的跨位边界相关联的第一,第二和第三十字点对。 当信号强度低于预定阈值时,这些对的总和可以缩小。 在另一个实施例中,该设置可以包括与第一位相关联的第一交叉点对和与第二位相关联的第二交叉点对。 当信号强度低于预定阈值时,这些对的总和也可以缩小。
    • 22. 发明授权
    • Continuity of function of a GPS receiver during power cycling
    • 电力循环期间GPS接收机的功能连续性
    • US08731110B1
    • 2014-05-20
    • US13032452
    • 2011-02-22
    • Hao ZhouAku-Matti T. Levola
    • Hao ZhouAku-Matti T. Levola
    • H03K9/00
    • G01S19/34G01S19/37
    • A GPS receiver includes an RF section and a digital section, the digital section including a correlator circuit for performing correlation with respect to a plurality of satellite channels. The GPS receiver is operated by cycling power to the RF section on and off according to a determined duty cycle having an ON portion and an OFF portion. During the ON portion, navigation related data received from the plurality of satellite channels is sampled by higher level software. Continuity of function may be achieved by resetting a state of at least a portion of the correlator circuit in correspondence to a transition from the OFF portion to the ON portion.
    • GPS接收机包括RF部分和数字部分,数字部分包括用于对多个卫星信道进行相关的相关器电路。 GPS接收机通过根据确定的具有ON部分和OFF部分的占空比将功率循环到RF部分来开启和关闭来操作。 在ON部分,从多个卫星信道接收的导航相关数据被较高级别的软件采样。 可以通过根据从OFF部分到ON部分的转变来重置相关器电路的至少一部分的状态来实现功能的连续性。
    • 23. 发明授权
    • Enabling stateless server-based pre-shared secrets
    • 启用基于无状态的基于服务器的预共享机密
    • US08166301B2
    • 2012-04-24
    • US11843292
    • 2007-08-22
    • Nancy Cam-WingetHao ZhouPadmanabha C. JakkahalliJoseph SaloweyDavid A. McGrew
    • Nancy Cam-WingetHao ZhouPadmanabha C. JakkahalliJoseph SaloweyDavid A. McGrew
    • H04L29/06
    • H04L63/0435H04L9/0822H04L9/0841H04L63/08H04L67/14
    • A method is disclosed for enabling stateless server-based pre-shared secrets. Based on a local key that is not known to a client, a server encrypts the client's state information. The client's state information may include, for example, the client's authentication credentials, the client's authorization characteristics, and a shared secret key that the client uses to derive session keys. By any of a variety of mechanisms, the encrypted client state information is provided to the client. The server may free memory that stored the client's state information. When the server needs the client's state information, the client sends, to the server, the encrypted state information that the client stored. The server decrypts the client state information using the local key. Because each client stores that client's own state information in encrypted form, the server does not need to store any client's state information permanently.
    • 公开了一种实现无状态的基于服务器的预共享机密的方法。 基于客户端不知道的本地密钥,服务器加密客户端的状态信息。 客户端的状态信息可以包括例如客户端的认证凭证,客户端的授权特征以及客户端用于导出会话密钥的共享秘密密钥。 通过各种机制中的任一种,加密的客户端状态信息被提供给客户端。 服务器可以释放存储客户端状态信息的内存。 当服务器需要客户端的状态信息时,客户端向服务器发送客户端存储的加密状态信息。 服务器使用本地密钥解密客户端状态信息。 因为每个客户端都以加密形式存储客户端自己的状态信息,服务器不需要永久存储任何客户端的状态信息。
    • 25. 发明申请
    • Process of Forming Nano-Composites and Nano-Porous Non-Wovens
    • 形成纳米复合材料和纳米多孔无纺布的工艺
    • US20120074611A1
    • 2012-03-29
    • US12893021
    • 2010-09-29
    • Hao ZhouWalter A. Scrivens
    • Hao ZhouWalter A. Scrivens
    • B29C51/04
    • C08J3/005B29C43/003B29C55/00B29K2105/0088B32B5/022B32B7/03B32B27/08B32B27/286B32B27/32B32B2262/14B32B2270/00B82Y30/00C08J5/005C08J5/046D01F6/46D01F6/56D04H13/02
    • A process for forming a nano-composite including mixing a first and second thermoplastic polymer in a molten state forming a molten polymer blend. The second polymer is soluble in a first solvent and the first polymer is insoluble in the first solvent. The first polymer forms discontinuous regions in the second polymer. Next, the polymer blend is subjected to extensional flow, shear stress, and heat forming nanofibers where less than about 30% by volume of the nanofibers are bonded to other nanofibers.Next the polymer blend with nanofibers is cooled and the first intermediate is formed into a pre-consolidation formation. The pre-consolidation formation is then consolidated causing nanofiber movement, randomization, and at least 70% by volume of the nanofibers to fuse to other nanofibers. According to one aspect, the second intermediate is then subjected to the first solvent to the dissolving away at least a portion of the second polymer.
    • 一种形成纳米复合材料的方法,包括在形成熔融聚合物共混物的熔融状态下混合第一和第二热塑性聚合物。 第二聚合物可溶于第一溶剂,第一聚合物不溶于第一溶剂。 第一聚合物在第二聚合物中形成不连续区域。 接下来,聚合物共混物经受拉伸流动,剪切应力和热成型纳米纤维,其中少于约30体积%的纳米纤维结合到其他纳米纤维。 接下来,将具有纳米纤维的聚合物共混物冷却,并将第一中间体形成预固化地层。 然后固化预固化形成,导致纳米纤维运动,随机化,以及至少70体积%的纳米纤维与其他纳米纤维融合。 根据一个方面,然后使第二中间体经受第一溶剂以溶解至少部分第二聚合物。
    • 28. 发明授权
    • Low-jitter phase-locked loop
    • 低抖动锁相环
    • US07990225B1
    • 2011-08-02
    • US12498989
    • 2009-07-07
    • Jianmin GuoYihui LiHong XueYonghua SongTao ShuiHao Zhou
    • Jianmin GuoYihui LiHong XueYonghua SongTao ShuiHao Zhou
    • H03L7/085
    • H03L7/099H03L7/093H03L2207/06
    • A phase-locked loop (PLL) with a decreased frequency tuning gain KVCO and a loop filter using capacitor multiplication technique to get high chip area efficiency. To get decreased frequency tuning gain, KVCO, a voltage to current converter in a voltage-controlled oscillator (VCO) in the PLL may comprise a first voltage to current converter and a second voltage to current converter. The trans-conductance of the first voltage to current converter is 1/β of that of the second voltage to current converter, wherein β>1. The first voltage to current converter is controlled by an output voltage of a loop filter in the PLL, and the second voltage to current converter is controlled by a relative DC voltage, which may be the junction node between R1 and C1 in a loop filer of the PLL. Capacitor multiplication technique may use an auxiliary charge pump to charge or discharge the junction node between R1 and C1 inversely to the main charge pump. When the charge or discharge current unit of the auxiliary charge pump is α times of the main charge pump, the capacitance of C1 may be reduced to just (1−α) times of what it needed in a conventional loop stability compensation method, wherein α
    • 具有降低的频率调谐增益KVCO的锁相环(PLL)和使用电容器乘法技术的环路滤波器以获得高芯片面积效率。 为了降低频率调谐增益,PLL中的压控振荡器(VCO)中的电压 - 电流转换器KVCO可以包括第一电压 - 电流转换器和第二电压 - 电流转换器。 第一个电压到电流转换器的反向电导为1 / 的第二电压到电流转换器,其中&amp; 1。 第一个电压到电流转换器由PLL中的环路滤波器的输出电压控制,第二个电压到电流转换器由一个相对直流电压控制,相对直流电压可以是一个环路滤波器中的R1和C1之间的结点 PLL。 电容倍增技术可以使用辅助电荷泵来将R1和C1之间的连接节点与主电荷泵反向充电或放电。 当辅助电荷泵的充电或放电电流单元是主电荷泵的α倍时,C1的电容可以降低到常规环路稳定性补偿方法中所需要的(1-α)倍,其中α <1。