公开(公告)号：WO2008094962A2

公开(公告)日：2008-08-07

申请号：PCT/US2008/052393

申请日：2008-01-30

Applicant: SIRF TECHNOLOGY, INC. ,  WANG, Chi-shin ,  JIA, Zhike ,  XIONG, Lianxue ,  TU, Yinghao

Inventor： WANG, Chi-shin ,  JIA, Zhike ,  XIONG, Lianxue ,  TU, Yinghao

IPC: G01S19/23

CPC classification number: G01S19/235 ,  H03J7/04 ,  H03L1/02

Abstract: Systems and methods are provided that compensate for frequency drift due to temperature variation without the need for a temperature sensor. In one embodiment, a navigation receiver with an integrated communication device receives a base station reference signal, which is used to periodically calibrate a local oscillator frequency. In another embodiment, the calibrated local oscillator frequency drives a counter that is used to provide code phase estimation at the start of satellite signal acquisition. To provide temperature compensation in one embodiment, the calibrated local frequency is used to drive one or more counters at different calibration rates (i.e., different time intervals between calibrations). Count values from these counters are used to determine compensation for frequency drift due to temperature variation based on predicted frequency drift variation patterns between calibrations. This temperature compensation does not require a temperature sensor and further improves the accuracy of the code phase estimation.

Abstract translation: 提供了系统和方法，其补偿由于温度变化而引起的频率漂移，而不需要温度传感器。 在一个实施例中，具有集成通信设备的导航接收器接收用于周期性地校准本地振荡器频率的基站参考信号。 在另一个实施例中，校准的本地振荡器频率驱动用于在卫星信号采集开始时提供码相位估计的计数器。 为了在一个实施例中提供温度补偿，校准的本地频率用于以不同的校准速率驱动一个或多个计数器（即校准之间的不同时间间隔）。 这些计数器的计数值用于根据校准之间的预测频率漂移变化模式来确定由于温度变化引起的频率漂移的补偿。 该温度补偿不需要温度传感器，进一步提高了代码相位估计的精度。

公开(公告)号：WO2016144486A1

公开(公告)日：2016-09-15

申请号：PCT/US2016/017847

申请日：2016-02-12

Applicant: QUALCOMM INCORPORATED

Inventor： ARCUDIA, Kenneth Luis ,  SHAFER, Jeffrey Andrew ,  PANDITA, Bupesh

IPC: H03L7/091 ,  H03L7/093

CPC classification number: H04L7/0332 ,  H03B5/1212 ,  H03B5/1228 ,  H03L7/091 ,  H03L7/093 ,  H04L7/0025 ,  H04L7/041

Abstract: In one embodiment, a phase locked loop (PLL) comprises a voltage-controlled oscillator (VCO), a frequency divider configured to frequency divide an output signal of the VCO to produce a feedback signal, and a phase detection circuit configured to detect a phase difference between a reference signal and the feedback signal, and to generate an output signal based on the detected phase difference. The PLL also comprises a proportional circuit configured to generate a control voltage based on the output signal of the phase detection circuit, wherein the control voltage tunes a first capacitance of the VCO to provide phase correction. The PLL further comprises an integration circuit configured to convert the control voltage into a digital signal, to integrate the digital signal, and to tune a second capacitance of the VCO based on the integrated digital signal to provide frequency tracking.

Abstract translation: 在一个实施例中，锁相环（PLL）包括压控振荡器（VCO），分频器，被配置为频率分频VCO的输出信号以产生反馈信号;以及相位检测电路，被配置为检测相位 参考信号和反馈信号之间的差异，并且基于检测到的相位差产生输出信号。 PLL还包括比例电路，其被配置为基于相位检测电路的输出信号产生控制电压，其中控制电压调谐VCO的第一电容以提供相位校正。 PLL还包括集成电路，其被配置为将控制电压转换为数字信号，以集成数字信号，并且基于积分数字信号来调谐VCO的第二电容以提供频率跟踪。

公开(公告)号：WO2016137646A1

公开(公告)日：2016-09-01

申请号：PCT/US2016/015193

申请日：2016-01-27

Applicant: QUALCOMM INCORPORATED

Inventor： NADERI ALIZADEH, Mohammadhossein ,  MEHDIZAD TALEIE, Shahin ,  SEO, Dongwon

IPC: H03M3/04

CPC classification number: H03M1/0626 ,  H03M1/002 ,  H03M1/687 ,  H03M3/368 ,  H03M3/502 ,  H03M7/3042

Abstract: In one embodiment, a method for converting an input digital signal into an analog signal is provided. The method comprises modulating the input digital signal into a modulated digital signal, and converting the modulated digital signal into the analog signal using a digital-to-analog converter (DAC). The modulation shapes quantization noise of the DAC to place a notch at a frequency within an out-of-bound frequency band to reduce the quantization noise within the out-of-bound frequency band.

Abstract translation: 在一个实施例中，提供了一种将输入数字信号转换为模拟信号的方法。 该方法包括将输入数字信号调制成调制数字信号，并使用数模转换器（DAC）将调制数字信号转换为模拟信号。 该调制形成DAC的量化噪声，以将陷波置于超限频带内的频率，以减小超出频带内的量化噪声。

公开(公告)号：WO2016118250A1

公开(公告)日：2016-07-28

申请号：PCT/US2015/065535

申请日：2015-12-14

Applicant: QUALCOMM INCORPORATED

Inventor： SAEIDI, Mehdi ,  MITTAL, Rajat ,  MITTAL, Arpit ,  COUTTS, Ryan Michael

IPC: G05D23/19 ,  G06F1/20 ,  G01K3/08 ,  G01K7/42

CPC classification number: G05D23/1917 ,  G01K3/08 ,  G01K3/10 ,  G05B15/02 ,  G06F1/206

Abstract: In one embodiment, a method of temperature control comprises receiving temperature readings from a temperature sensor on a chip, calculating one or more second derivatives of temperature with respect to time based on the temperature readings, and determining whether to perform temperature mitigation on the chip based on the one or more calculated second derivatives of temperature.

Abstract translation: 在一个实施例中，温度控制的方法包括从芯片上的温度传感器接收温度读数，基于温度读数计算温度相对于时间的一个或多个二阶导数，以及确定是否在基于芯片的基础上执行温度降低 在一个或多个计算的温度的二阶导数上。

公开(公告)号：WO2007115333A2

公开(公告)日：2007-10-11

申请号：PCT/US2007/066007

申请日：2007-04-04

Applicant: SENNARI ENTERTAINMENT ,  BHALLA, Sanjeev ,  BARHYDT, William J. ,  STEWART, Karl ,  HARDY, Julian ,  CARTABIANO, Mike ,  SU, Jiawen ,  CHAN, Woon Shing

Inventor： BHALLA, Sanjeev ,  BARHYDT, William J. ,  STEWART, Karl ,  HARDY, Julian ,  CARTABIANO, Mike ,  SU, Jiawen ,  CHAN, Woon Shing

IPC: H04M11/00

CPC classification number: H04L67/306 ,  H04L51/32 ,  H04L51/38

Abstract: Provided herein are systems and methods that provide community based voting and/or actionable multi-media messaging in a social network. In an embodiment, actionable multi-media messaging is provided, in which the user receives a message comprising an actionable item that the user can act on. The actionable item can be, e.g., to purchase an item, to vote on a ballot, or other actions that can be taken by the user. In another embodiment, community based voting is provided, in which a user receives a message comprising a voting ballot. In this embodiment, the user can vote on the ballot, and publish his/her vote to his/her social network, e.g., to express his/her likes and dislikes. The user can also forward the ballot to other users in his/her social network, and view how other individual users in his/her the social network have voted.

Abstract translation: 本文提供了在社交网络中提供基于社区的投票和/或可操作的多媒体消息的系统和方法。 在一个实施例中，提供可操作的多媒体消息传递，其中用户接收包括用户可以采取行动的可操作项目的消息。 可操作的项目可以是例如购买项目，以投票表决，或者用户可以采取的其他动作。 在另一个实施例中，提供了基于社区的投票，其中用户接收包括投票投票的消息。 在这个实施例中，用户可以对投票进行投票，并将他/她的投票发布到他/她的社交网络，例如表达他/她的喜好和不喜欢。 用户还可以将投票转发到他/她的社交网络中的其他用户，并查看他/她的社交网络中其他个人用户投票的方式。

公开(公告)号：WO2007130996A2

公开(公告)日：2007-11-15

申请号：PCT/US2007/067957

申请日：2007-05-01

Applicant: WEBEX COMMUNICATIONS, INC. ,  KNIGHT, David ,  MONTGOMERY, Elaine ,  DANIELS, Chris ,  WU, Linda ,  KASAN, Ilan

Inventor： KNIGHT, David ,  MONTGOMERY, Elaine ,  DANIELS, Chris ,  WU, Linda ,  KASAN, Ilan

IPC: G06F17/30

CPC classification number: G06F17/30699 ,  G06F17/30867

Abstract: In one embodiment, the methods and apparatuses detect a plurality of targets; select one of the plurality of targets as a selected target; detect a profile associated with the selected target; and display information associated with the selected target, wherein the information is referenced in the profile associated with the selected target.

Abstract translation: 在一个实施例中，所述方法和装置检测多个目标; 选择多个目标之一作为选定目标; 检测与所选择的目标相关联的简档; 并显示与所选择的目标相关联的信息，其中所述信息在与所选择的目标相关联的简档中引用。

公开(公告)号：WO2016105712A1

公开(公告)日：2016-06-30

申请号：PCT/US2015/061528

申请日：2015-11-19

Applicant: QUALCOMM INCORPORATED

Inventor： GALAL, Sherif ,  ZHANG, Xinwang

IPC: H04R3/00 ,  H04R29/00

CPC classification number: H04R3/007 ,  H03F1/523 ,  H03F3/185 ,  H03F3/2173 ,  H03F2200/03 ,  H03F2200/321 ,  H03F2200/462 ,  H03F2203/45138 ,  H03G3/20 ,  H03G3/3005 ,  H03G7/002 ,  H03G11/00 ,  H04R29/003

Abstract: In one embodiment, a method for speaker operation comprises sensing an input common mode signal of a driver, wherein the driver drives a speaker, and adjusting the input common mode signal of the driver based on a difference between the sensed input common mode signal and a reference signal. The method also comprises sensing a current of a coil of the speaker, and control an output volume of the speaker based at least in part on the sensed current.

Abstract translation: 在一个实施例中，一种用于扬声器操作的方法包括感测驾驶员的输入共模信号，其中驱动器驱动扬声器，并且基于所感测的输入共模信号和 参考信号。 该方法还包括感测扬声器的线圈的电流，并且至少部分地基于所感测的电流来控制扬声器的输出音量。

公开(公告)号：WO2009002588A2

公开(公告)日：2008-12-31

申请号：PCT/US2008/060130

申请日：2008-04-11

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ,  BURKE, Peter, J. ,  RUTHERGLEN, Christopher, M.

Inventor： BURKE, Peter, J. ,  RUTHERGLEN, Christopher, M.

IPC: H03D1/18

CPC classification number: H03D1/08

Abstract: Described herein are systems and methods in which a carbon nanotube (CNT) is used as a demodulator of amplitude-modulated (AM) signals. Due to the nonlinear current-voltage (I-V) characteristics of a CNT, the CNT induces rectification of an applied RF signal enabling the CNT to function as a demodulator of an amplitude-modulated (AM) RF signal. By properly biasing the CNT such that the operating point is centered on the maximum portion of the I-V curve, the demodulation effect of the CNT can be maximized. The present invention is useful for possible nanoscale wireless communications systems, e.g., nanoscale radios.

Abstract translation: 这里描述了使用碳纳米管（CNT）作为幅度调制（AM）信号的解调器的系统和方法。 由于CNT的非线性电流 - 电压（I-V）特性，CNT引起施加的RF信号的整流，使CNT能够用作幅度调制（AM）RF信号的解调器。 通过适当地偏置CNT使得工作点以I-V曲线的最大部分为中心，可以使CNT的解调效果最大化。 本发明对于可能的纳米尺度无线通信系统是有用的，例如纳米级无线电。

公开(公告)号：WO2008112454A1

公开(公告)日：2008-09-18

申请号：PCT/US2008/055691

申请日：2008-03-03

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA ,  PARK, Benjamin, Y. ,  MADOU, Marc, J.

Inventor： PARK, Benjamin, Y. ,  MADOU, Marc, J.

IPC: H04L1/02

CPC classification number: H04B1/707 ,  H04B1/7093

Abstract: Described herein are code-modulated multi-signal systems. In one embodiment, a multi-signal system receives multiple input signals and code-modulates each input signal with a unique code to distinguish the input signal from the other input signals. The input signals may come from multiple antennas, multiple sensors, multiple channels, etc. The code-modulated signals are then combined into a combined signal that is sent through shared blocks and/or transmitted across a shared medium in a shared path. After shared processing and/or shared transmission, the individual signals are recovered using matched filters. Each matched filter contains a code corresponding to one of the unique codes for recovering the corresponding signal from the combined signal. The recovered signals may then be inputted to additional processors for further processing.

Abstract translation: 这里描述的是码调制的多信号系统。 在一个实施例中，多信号系统接收多个输入信号并用唯一码对每个输入信号进行码调制，以将输入信号与其它输入信号区分开。 输入信号可以来自多个天线，多个传感器，多个信道等。然后，将码调制信号组合成通过共享块发送和/或在共享路径中的共享介质上传输的组合信号。 在共享处理和/或共享传输之后，使用匹配的滤波器恢复各个信号。 每个匹配滤波器包含对应于用于从组合信号恢复相应信号的唯一码之一的码。 然后可以将恢复的信号输入到另外的处理器用于进一步处理。

公开(公告)号：WO2016153778A1

公开(公告)日：2016-09-29

申请号：PCT/US2016/021397

申请日：2016-03-08

Applicant: QUALCOMM INCORPORATED

Inventor： THILENIUS, Stephen Clifford ,  ISAKANIAN, Patrick ,  LOKE, Alvin Leng Sun ,  BRYAN, Thomas Clark ,  PETERSON, LuVerne Ray

IPC: H03K19/0185 ,  G11C7/10

CPC classification number: H03K19/017518 ,  G11C7/1057 ,  H03K5/14 ,  H03K19/018507

Abstract: In one embodiment, a system comprises a pre-driver circuit and a driver. The pre-driver circuit is powered by a first supply voltage, and configured to output a pre-drive signal. The driver comprises a pull-up NMOS transistor having a drain coupled to a second supply voltage, and a source coupled to an output of the driver, wherein the second supply voltage is lower than the first supply voltage by at least a threshold voltage of the pull-up NMOS transistor. The driver also comprises a drive circuit coupled to a gate of the pull-up NMOS transistor, wherein the drive circuit is configured to receive the pre-drive signal and to drive the gate of the pull-up NMOS transistor with a voltage approximately equal to the first supply voltage to drive the output of the driver to a high state depending on a logic state of the pre-drive signal.

Abstract translation: 在一个实施例中，系统包括预驱动器电路和驱动器。 预驱动器电路由第一电源电压供电，并且被配置为输出预驱动信号。 驱动器包括具有耦合到第二电源电压的漏极的上拉NMOS晶体管和耦合到驱动器的输出的源，其中第二电源电压低于第一电源电压至少一个阈值电压 上拉式NMOS晶体管。 驱动器还包括耦合到上拉NMOS晶体管的栅极的驱动电路，其中驱动电路被配置为接收预驱动信号并且驱动上拉NMOS晶体管的栅极，其电压近似等于 根据预驱动信号的逻辑状态，第一电源电压将驱动器的输出驱动到高电平状态。