公开(公告)号：US07668149B2

公开(公告)日：2010-02-23

申请号：US10789298

申请日：2004-02-27

Applicant: Wen Zhao ,  Xin Jin

Inventor： Wen Zhao ,  Xin Jin

IPC: H04L12/56

CPC classification number: H04W4/10 ,  H04L65/1016 ,  H04L65/4007 ,  H04L65/4061 ,  H04W76/45

Abstract: Methods and apparatus for facilitating concurrent Push-to-talk over Cellular (PoC) group communication sessions for a mobile station (102) are disclosed. A first PoC communication session (550) for a first user group (504) is maintained while a second PoC communication session (552) for a second user group (506) is concurrently maintained, where the second user group (506) has at least one common member (516) with the first user group (504). The second user group (506) may have at least one member (518, 520) which is not included in the first user group (504). Through a user interface, a PoC user may select between the first and the second user groups (504 and 506) for communication or combine the communications. In an alternative embodiment, all of the members (518, 520, 522) of a second user group (604) may be included in a first user group (602). In a specific approach, encrypted data packets of a PoC communication sub-session are communicated during a PoC communication session. If a key for the encrypted data packets is known for the mobile station (102), the encrypted data packets are decrypted to facilitate the PoC communication sub-session involving the mobile station (102); otherwise the encrypted data packets are discarded.

Abstract translation: 公开了用于促进移动站（102）的蜂窝（PoC）组通信会话的并发一键通通话的方法和装置。 维持用于第一用户组（504）的第一PoC通信会话（550），同时维护第二用户组（506）的第二PoC通信会话（552），其中第二用户组（506）至少具有 一个公共成员（516）与第一个用户组（504）。 第二用户组（506）可以具有不包括在第一用户组（504）中的至少一个成员（518,520）。 通过用户界面，PoC用户可以在第一和第二用户组（504和506）之间进行选择以进行通信或组合通信。 在替代实施例中，第二用户组（604）的所有成员（518,520,522）可以被包括在第一用户组（602）中。 在具体的方法中，在PoC通信会话期间传送PoC通信子会话的加密数据分组。 如果对于移动台（102）已知加密数据分组的密钥，则对加密的数据分组进行解密以便于涉及移动台（102）的PoC通信子会话。 否则加密的数据包将被丢弃。

公开(公告)号：US20090278735A1

公开(公告)日：2009-11-12

申请号：US12118040

申请日：2008-05-09

Applicant: Xin Jin ,  Christopher James Grant ,  Andrew Jonathan Gilbert Rosselet

Inventor： Xin Jin ,  Christopher James Grant ,  Andrew Jonathan Gilbert Rosselet

IPC: H04B7/185 ,  G01S5/14

CPC classification number: G01S19/235 ,  G01S19/25

Abstract: A method and apparatus for estimating oscillator signal variation due to temperature and for providing an estimated frequency to a GPS receiver in order to assist the GPS receiver to acquire the signals quickly is disclosed. A temperature sensor is closely thermally coupled with the crystal oscillator in the GPS receiver and during GPS tracking mode, when the error in the oscillator signal is known with precision, outer bounds of TCXO frequency at given temperatures are maintained, which may correspond to rising and falling temperature conditions. During acquisition mode, an estimated frequency value is provided to the GPS receiver based on a determined average of these bounds. Optionally, an uncertainty factor associated with the frequency estimated may also be provided. The two bounds take into account the hysteresis effects of the oscillator signal drift due to temperature so that a more accurate initial frequency estimate can be provided to the GPS receiver, thus reducing its average time to first fix.

Abstract translation: 公开了一种用于估计由于温度引起的振荡器信号变化并用于向GPS接收机提供估计频率以便帮助GPS接收机快速获取信号的方法和装置。 温度传感器与GPS接收机中的晶体振荡器紧密耦合，并且在GPS跟踪模式下，当精确地知道振荡器信号的误差时，保持给定温度下TCXO频率的外界，这可以对应于上升和下降 降温条件。 在采集模式期间，基于所确定的这些边界的平均值，向GPS接收机提供估计的频率值。 可选地，还可以提供与估计的频率相关联的不确定因素。 两个界限考虑了由于温度引起的振荡器信号漂移的滞后效应，从而可以向GPS接收机提供更准确的初始频率估计，从而减少其平均首次固定时间。

公开(公告)号：US07550244B2

公开(公告)日：2009-06-23

申请号：US11453177

申请日：2006-06-14

Applicant: Xin Jin ,  Lloyd A. Lobo ,  Dinesh Tyagi

Inventor： Xin Jin ,  Lloyd A. Lobo ,  Dinesh Tyagi

IPC: G03G9/08

CPC classification number: G03G9/08791 ,  G03G9/0806 ,  G03G9/0827 ,  G03G9/08793 ,  G03G9/09725

Abstract: The present invention provides a method for the preparation of a UV curable electrostatographic toner. The process includes the steps of dispersing a polymeric material and a UV curable material and a UV photoinitiator in an organic solvent to form an organic phase. The organic phase is dispersed in an aqueous phase containing a particulate stabilizer to form a dispersion. The dispersion is homogenized and the organic solvent is removed from the dispersed particles in the dispersion which are then recovered.

Abstract translation: 本发明提供了一种制备可UV固化的静电色谱调色剂的方法。 该方法包括将聚合物材料和UV可固化材料和UV光引发剂分散在有机溶剂中以形成有机相的步骤。 将有机相分散在含有颗粒稳定剂的水相中以形成分散体。 将分散体均化，并从分散体中分散的颗粒中除去有机溶剂，然后回收。

公开(公告)号：US07508888B2

公开(公告)日：2009-03-24

申请号：US11116233

申请日：2005-04-28

Applicant: Wen-Yen Chan ,  Xin Jin ,  Qingzhong Jiao ,  Nasserullah Khan ,  Nagula Tharma Sangary

Inventor： Wen-Yen Chan ,  Xin Jin ,  Qingzhong Jiao ,  Nasserullah Khan ,  Nagula Tharma Sangary

IPC: H03D3/18 ,  H03D3/24

CPC classification number: H03L7/146 ,  H03J7/00 ,  H04L27/0014 ,  H04L2027/0046 ,  H04L2027/0053 ,  H04L2027/0079

Abstract: A communications subsystem for a wireless device for correcting errors in a reference frequency signal. The communications subsystem comprises a frequency generator for generating the reference frequency signal and a closed loop reference frequency correction module that generates a reference frequency adjustment signal for correcting the reference frequency signal when the communications subsystem operates in closed loop mode. The subsystem further includes an open loop frequency correction means that that samples values of the reference frequency adjustment signal during the closed loop mode and generates a frequency correction signal for correcting the reference frequency signal when the communications subsystem operates in a mode other than closed loop mode.

Abstract translation: 一种用于校正参考频率信号中的错误的无线设备的通信子系统。 通信子系统包括用于产生参考频率信号的频率发生器和闭环参考频率校正模块，其在通信子系统以闭环模式操作时产生用于校正参考频率信号的参考频率调整信号。 该子系统还包括开环频率校正装置，其在闭环模式期间采样参考频率调整信号的值，并且当通信子系统以除闭环模式之外的模式操作时产生用于校正参考频率信号的频率校正信号 。

公开(公告)号：US07463872B2

公开(公告)日：2008-12-09

申请号：US11065406

申请日：2005-02-24

Applicant: Xin Jin ,  Qingzhong Jiao ,  Tom Yun Sang Young

Inventor： Xin Jin ,  Qingzhong Jiao ,  Tom Yun Sang Young

IPC: H04B1/16 ,  H04B1/06

CPC classification number: H04W52/0283 ,  H03G3/3052 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/144

Abstract: The settling time of a wireless receiver is reduced by providing a previously utilized gain control state value to a low noise amplifier (LNA) of a receiver front end during a warm-up portion of a wake-up period of the wireless receiver which follows a sleep period. One illustrative method includes the steps of receiving a notification signal which indicates that the wireless receiver is to be placed in a sleep mode, reading a gain control state value from a gain controller based on receiving the notification signal, storing the gain control state value in memory, providing the stored gain control state value from the memory to the wireless receiver during a warm-up period of a second wake-up period following the first wake-up period, and providing a gain control state value from the gain controller to the wireless receiver based on a signal level of a currently received signal of the wireless receiver after the warm-up period.

Abstract translation: 无线接收机的建立时间通过在随后的无线接收机的唤醒周期的预热部分期间向接收器前端的低噪声放大器（LNA）提供先前利用的增益控制状态值来减少 睡眠期 一种说明性方法包括以下步骤：接收指示无线接收机将处于睡眠模式的通知信号，基于接收到通知信号从增益控制器读取增益控制状态值，将增益控制状态值存储在 存储器，在所述第一唤醒周期之后的第二唤醒周期的预热周期期间，将所存储的增益控制状态值从所述存储器提供给所述无线接收器，以及从所述增益控制器向所述增益控制器提供增益控制状态值 无线接收机基于预热时段之后的无线接收机的当前接收信号的信号电平。

公开(公告)号：US20080139130A1

公开(公告)日：2008-06-12

申请号：US11608299

申请日：2006-12-08

Applicant: Wen Zhao ,  Xin Jin

Inventor： Wen Zhao ,  Xin Jin

IPC: H04B1/38

CPC classification number: H04W72/005

Abstract: Systems and methods are provided for a cellular network to receive and decode access probes. A wireless device transmits an access probe spread with a PN code to a cellular network. The transceiver to which the wireless device is associated with can receive and decode the access probe. Additionally, other transceivers can receive and decode the access probe. In some implementations, each transceiver listens for access probes spread with their respective transceiver-specific PN code or other PN codes associated with neighbouring transceivers. In other implementations, each transceiver listens for access probes spread with a common access code. There may be more than one common access code in which each transceiver listens for access probes spread with any one of the common access codes.

Abstract translation: 为蜂窝网络提供了接收和解码接入探针的系统和方法。 无线设备将传输有PN码的接入探测器发送到蜂窝网络。 与无线设备相关联的收发器可以接收和解码接入探针。 另外，其他收发器可以接收和解码接入探针。 在一些实施方案中，每个收发器监听用其各自的收发器专用PN码或与相邻收发器相关联的其他PN码扩频的接入探测器。 在其他实现中，每个收发器侦听用普通访问码扩展的访问探针。 可能存在多于一个公共访问代码，其中每个收发器监听用任何一个公共访问代码扩展的访问探针。

公开(公告)号：US20080118001A1

公开(公告)日：2008-05-22

申请号：US12025247

申请日：2008-02-04

Applicant: Wen-Yen Chan ,  Nasserullah Khan ,  Qingzhong Jiao ,  Xin Jin ,  Nagula Sangary ,  Michael Habicher

Inventor： Wen-Yen Chan ,  Nasserullah Khan ,  Qingzhong Jiao ,  Xin Jin ,  Nagula Sangary ,  Michael Habicher

IPC: H04K1/02

CPC classification number: H04W52/343

Abstract: A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block.

Abstract translation: 用于无线通信设备的电源管理系统和方法基于来自基站的接收信号强度指示符信号和功率控制指令信号中的至少一个产生平均期望的发射功率信号。 基于输出数据流的数据参数和至少一个环境信息信号生成电源电平调整信号。 使用电源电平调整信号和平均期望发送功率或增益控制信号和电源电平调整信号的改变版本的组合来产生可变电源信号，该可变电源信号被提供给输出放大器块用于充分地 产生输出无线设备无线电信号，同时减少输出放大器块中的功率损耗。

公开(公告)号：US20080020718A1

公开(公告)日：2008-01-24

申请号：US11866715

申请日：2007-10-03

Applicant: Xin Jin ,  Wen Zhao

Inventor： Xin Jin ,  Wen Zhao

IPC: H04B1/38

CPC classification number: H04W4/10 ,  H04W76/45

Abstract: In one illustrative example, a mobile station includes a wireless transceiver; a user interface including a Push-To-Talk (PTT) switch for initiating a PTT voice communication and a microphone for receiving voice input signals; one or more processors; and a First-In-First-Out (FIFO) buffer memory coupled to the one or more processors. The one or more processors are operative to identify a user actuation of the PTT switch and, in response, save digital voice data corresponding to voice input signals in the FIFO buffer memory; cause a request for the PTT voice communication to be made through a wireless network; identify that a floor grant has been received through the wireless network in response to the request; and after identifying the floor grant, cause the digital voice data from the FIFO buffer memory to be retrieved and transmitted to the wireless network for the PTT voice communication. Advantageously, the saving of the digital voice data in the FIFO buffer memory is performed at least in part during a delay time period between the user actuation of the PTT switch and the identifying of the floor grant.

Abstract translation: 在一个说明性示例中，移动站包括无线收发器; 包括用于发起PTT语音通信的一键通（PTT）开关和用于接收语音输入信号的麦克风的用户界面; 一个或多个处理器; 以及耦合到所述一个或多个处理器的先进先出（FIFO）缓冲存储器。 所述一个或多个处理器用于识别PTT开关的用户致动，并且作为响应，将对应于语音输入信号的数字语音数据保存在FIFO缓冲存储器中; 导致通过无线网络进行PTT语音通信的请求; 确定已经通过无线网络响应于该请求接收到地板授权; 并且在识别出地板许可之后，使来自FIFO缓冲存储器的数字语音数据被检索并发送到无线网络进行PTT语音通信。 有利地，数字语音数据在FIFO缓冲存储器中的保存至少部分地在用户激活PTT开关和识别出地板许可之间的延迟时间段期间进行。

公开(公告)号：US07295853B2

公开(公告)日：2007-11-13

申请号：US10880716

申请日：2004-06-30

Applicant: Xin Jin ,  Wen Zhao

Inventor： Xin Jin ,  Wen Zhao

IPC: H04B7/00 ,  H04Q7/20

CPC classification number: H04W4/10 ,  H04W76/45

Abstract: In one illustrative example, a mobile station includes a wireless transceiver; a user interface including a Push-To-Talk (PTT) switch for initiating a PTT voice communication and a microphone for receiving voice input signals; one or more processors; and a First-In-First-Out (FIFO) buffer memory coupled to the one or more processors. The one or more processors are operative to identify a user actuation of the PTT switch and, in response, save digital voice data corresponding to voice input signals in the FIFO buffer memory; cause a request for the PTT voice communication to be made through a wireless network; identify that a floor grant has been received through the wireless network in response to the request; and after identifying the floor grant, cause the digital voice data from the FIFO buffer memory to be retrieved and transmitted to the wireless network for the PTT voice communication. Advantageously, the saving of the digital voice data in the FIFO buffer memory is performed at least in part during a delay time period between the user actuation of the PTT switch and the identifying of the floor grant.

Abstract translation: 在一个说明性示例中，移动站包括无线收发器; 包括用于发起PTT语音通信的一键通（PTT）开关和用于接收语音输入信号的麦克风的用户界面; 一个或多个处理器; 以及耦合到所述一个或多个处理器的先进先出（FIFO）缓冲存储器。 所述一个或多个处理器用于识别PTT开关的用户致动，并且作为响应，将对应于语音输入信号的数字语音数据保存在FIFO缓冲存储器中; 导致通过无线网络进行PTT语音通信的请求; 确定已经通过无线网络响应于该请求接收到地板授权; 并且在识别出地板许可之后，使来自FIFO缓冲存储器的数字语音数据被检索并发送到无线网络进行PTT语音通信。 有利地，数字语音数据在FIFO缓冲存储器中的保存至少部分地在用户激活PTT开关和识别出地板许可之间的延迟时间段期间进行。

公开(公告)号：US20070184827A1

公开(公告)日：2007-08-09

申请号：US11494443

申请日：2006-07-28

Applicant: Xin Jin ,  Jennifer Mallalieu ,  Fiona Shearer

Inventor： Xin Jin ,  Jennifer Mallalieu ,  Fiona Shearer

IPC: H04Q7/20

CPC classification number: H04M1/24 ,  H04W52/0261

Abstract: A method and system for determining standby time for a mobile station uses a battery simulator, a base station emulator, a computer to control the test equipment and MSUT for testing a mobile station. The computer includes a module for determining a radio off battery voltage, a module for deriving a battery capacity in dependence upon the radio off battery voltage, a module for measuring battery capacity usage in a predetermined time while the mobile station is in standby mode and a module for determining a standby time for the mobile station in dependence upon the battery capacity and the battery capacity usage, where the predetermined time is less than the standby time.

Abstract translation: 用于确定移动台的待机时间的方法和系统使用电池模拟器，基站仿真器，计算机来控制测试设备和用于测试移动台的MSUT。 该计算机包括用于确定电池电压无线电的模块，用于根据无线电关闭电池电压导出电池容量的模块，用于在移动台处于待机模式时在预定时间内测量电池容量使用的模块，以及 模块，用于根据电池容量和电池容量使用量确定移动台的待机时间，其中预定时间小于待机时间。