公开(公告)号：US20100189008A1

公开(公告)日：2010-07-29

申请号：US12752330

申请日：2010-04-01

Applicant: Xin JIN ,  Jennifer MALLALIEU ,  Fiona SHEARER

Inventor： Xin JIN ,  Jennifer MALLALIEU ,  Fiona SHEARER

IPC: H04L12/26

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。

公开(公告)号：US20070241956A1

公开(公告)日：2007-10-18

申请号：US11695111

申请日：2007-04-02

Applicant: Xin JIN

Inventor： Xin JIN

IPC: G01S5/14

CPC classification number: G01S19/21 ,  G01S19/235 ,  G01S19/35 ,  H04B1/3805

Abstract: The wireless communication device includes a wireless communication transceiver to generate an oscillator control signal and an activation signal, a positioning-system receiver (e.g. a GPS receiver) to process received positioning signals, and a shared oscillator (e.g. a temperature compensated and voltage controlled crystal oscillator TCVCXO) responsive to the oscillator control signal and to generate a reference frequency signal for the wireless communication transceiver and the positioning-system receiver. The positioning-system receiver may control processing of the received positioning signals based upon the activation signal to reduce a noise contribution (e.g. phase noise) due to frequency control of the shared oscillator based upon the oscillator control signal. The activation signal may indicate that the oscillator control signal is being varied to provide frequency control or adjustment of the shared oscillator.

Abstract translation: 无线通信设备包括：无线通信收发器，用于产生振荡器控制信号和激活信号;定位系统接收器（例如GPS接收器），用于处理接收到的定位信号;以及共享振荡器（例如温度补偿和压控晶体 振荡器TCVCXO），并且产生用于无线通信收发器和定位系统接收器的参考频率信号。 基于激活信号，定位系统接收机可以控制接收到的定位信号的处理，以便基于振荡器控制信号来减少由共享振荡器的频率控制引起的噪声贡献（例如，相位噪声）。 激活信号可以指示振荡器控制信号正在改变以提供共享振荡器的频率控制或调整。

公开(公告)号：US20130016800A1

公开(公告)日：2013-01-17

申请号：US13615349

申请日：2012-09-13

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: H04L27/06

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.

公开(公告)号：US20120166074A1

公开(公告)日：2012-06-28

申请号：US12977394

申请日：2010-12-23

Applicant: Jianfeng WENG ,  Xin JIN ,  David STEER

Inventor： Jianfeng WENG ,  Xin JIN ,  David STEER

IPC: G01C21/00 ,  G06F17/30 ,  G06F17/00

CPC classification number: G01C21/32

Abstract: A method of updating map data entails capturing an image using a camera, determining a location of an object in the image, creating new map data to represent the object in the image, and updating a map database to include the new map data for the object in the image. This method may be implemented on a GPS-enabled wireless communications device having an onboard camera which can transmit the new map data to a map server for updating its map database. Determining the position of the object in the image relative to the wireless device may be accomplished using a rangefinder and compass, triangulation of multiple images of the object, or a stereoscopic camera. The accuracy of the GPS position fix may be improved by capturing images of recognizable objects for which location coordinates are available.

Abstract translation: 更新地图数据的方法需要使用相机拍摄图像，确定图像中的对象的位置，创建新的地图数据来表示图像中的对象，并且更新地图数据库以包括对象的新的地图数据 在图像中。 该方法可以在具有车载相机的具有GPS功能的无线通信设备上实现，该车载摄像机可以将新的地图数据传输到地图服务器以更新其地图数据库。 可以使用测距仪和罗盘，对象的多个图像的三角测量或立体相机来确定图像中的对象相对于无线设备的位置。 可以通过捕获位置坐标可用的可识别对象的图像来改善GPS定位的精度。

公开(公告)号：US20110065485A1

公开(公告)日：2011-03-17

申请号：US12949229

申请日：2010-11-18

Applicant: Xin JIN ,  Jennifer MALLALIEU ,  Fiona SHEARER

Inventor： Xin JIN ,  Jennifer MALLALIEU ,  Fiona SHEARER

IPC: H04B1/38 ,  H02J7/00

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。