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    • 1. 发明授权
    • Fast fourier transform with down sampling based navigational satellite signal tracking
    • 快速傅里叶变换与基于下采样的导航卫星信号跟踪
    • US08466836B2
    • 2013-06-18
    • US11218298
    • 2005-08-31
    • Zhike JiaChi-Shin Wang
    • Zhike JiaChi-Shin Wang
    • G01S19/24G01S19/35
    • G01S19/24G01S19/246G01S19/29G01S19/35H04B1/7085
    • A method and device to track navigational satellite signals, are claimed. In this invention, a combination of down-sampling and frequency domain transformation are used to track the navigational satellite signals under dynamic environment. A Fast Fourier Transform (FFT) with long coherent integration has been employed to determine the varying frequency components with high resolution. By representing a number of correlation values with their average value, it is possible to represent a long sequence of input values by a smaller number of values and a relatively short length FFT can reveal the low frequency components that are present in the signal during tracking operation. A large reduction in the computational load may be achieved using this down-sampling method without compromising on the frequency resolution.
    • 声称用于跟踪导航卫星信号的方法和装置。 在本发明中,使用下采样和频域变换的组合来跟踪在动态环境下的导航卫星信号。 已经采用具有长相干积分的快速傅里叶变换(FFT)来确定具有高分辨率的变化频率分量。 通过用其平均值表示多个相关值,可以通过较小数量的值表示输入值的长序列,并且相对较短的长度可以显示在跟踪操作期间在信号中存在的低频分量 。 使用这种下采样方法可以在不影响频率分辨率的情况下实现计算负荷的大幅度减小。
    • 2. 发明授权
    • Keyboard device for use with tablet personal computer
    • 用于平板电脑的键盘设备
    • US08369074B2
    • 2013-02-05
    • US12940572
    • 2010-11-05
    • Shu-Wei ChouChun-Nan SuChun-Che WuTun-Shin Wang
    • Shu-Wei ChouChun-Nan SuChun-Che WuTun-Shin Wang
    • G06F1/16
    • G06F1/1632G06F1/1628G06F1/1669
    • A keyboard device for use with a tablet personal computer includes a base body and an upper cover. The base body includes a handle and plural keys. The handle is integrally formed with the base body. The upper cover has a receptacle for accommodating the tablet personal computer. The upper cover is connected with the base body. In addition, the upper cover is rotatable with respect to the base body in order to open or close the upper cover of the keyboard device. When the upper cover of the keyboard device is opened, the tablet personal computer is stored within the receptacle, so that the user may input characters or symbols to the tablet personal computer by depressing the keys. Whereas, when the upper cover of the keyboard device is closed, the keyboard device may be carried by grasping the handle.
    • 用于平板电脑的键盘装置包括基体和上盖。 基体包括手柄和多个键。 手柄与基体一体形成。 上盖具有容纳平板电脑的插座。 上盖与基体连接。 此外,上盖可相对于基体旋转,以打开或关闭键盘装置的上盖。 当打开键盘装置的上盖时,将平板电脑个人计算机存储在插座中,以便用户可以通过按压键将字符或符号输入到平板电脑个人计算机。 而当键盘装置的上盖关闭时,可以通过抓住把手来携带键盘装置。
    • 3. 发明申请
    • DISPLAY DEVICE AND CONTROLLING METHOD THEREOF
    • 显示装置及其控制方法
    • US20110254875A1
    • 2011-10-20
    • US13084563
    • 2011-04-12
    • Chao-Shin Wang
    • Chao-Shin Wang
    • G09G5/10G09G5/00
    • G09G5/00G09G2320/0626G09G2320/0666H04N5/60H04N21/4345H04N21/439H04N21/44H04N21/4436
    • A controlling method of a display device includes the following steps. First, a time reference value, a plurality of preset period criteria and a plurality of operation mode data are stored in a memory unit, wherein each preset period criterion relates to each operation mode datum. Then, utilize a time controller to read the time reference value and a plurality of preset period criteria, compare the time reference value and a plurality of preset period criteria to determine the preset period criterion corresponding to the time reference value, and select the operation mode datum corresponding to the preset period criterion. Following that, utilize a micro-controller to set a plurality of setting values of the display device according to the operation mode datum selected by the time controller.
    • 显示装置的控制方法包括以下步骤。 首先,时间基准值,多个预设周期准则和多个操作模式数据被存储在存储单元中,其中每个预设周期标准涉及每个操作模式基准。 然后,利用时间控制器读取时间基准值和多个预设周期准则,比较时间基准值和多个预设周期准则,以确定与时间基准值相对应的预设周期准则,并选择操作模式 基准对应于预设期间标准。 接着,利用微型控制器,根据由时间控制器选择的操作模式基准来设定显示装置的多个设定值。
    • 4. 发明授权
    • Ephemeris download from weak signals
    • 短信从弱信号下载
    • US07903028B2
    • 2011-03-08
    • US11612421
    • 2006-12-18
    • Chi-Shin WangYue-Meng ChenZhike JiaEnYuan Tu
    • Chi-Shin WangYue-Meng ChenZhike JiaEnYuan Tu
    • G01S19/07
    • H04B7/18589G01S19/243G01S19/246G01S19/27
    • The present invention provides systems and methods for downloading navigation data to a satellite receiver under weak signal conditions. In an embodiment, the receiver uses a tracking algorithm to estimate the Doppler frequency and rate of change of the Doppler frequency to compensate the phases of the I/Q samples from the received signal to reduce the effect of the Doppler frequency. In an embodiment, differential detection based data bit decoding is provided. In another embodiment, phase compensation based data bit decoding is provided, in which the phase of samples are rotated to compensate for phase error. In an embodiment, a multiple frame strategy is provided to increase signal-to-noise ratio (SNR) and improve sensitivity, in which similar placed samples in consecutive frames are coherently summed over the consecutive frames. In an embodiment, the samples are weighted to reduce the impact of noise in the multiple frame strategy.
    • 本发明提供了在弱信号条件下将导航数据下载到卫星接收机的系统和方法。 在一个实施例中,接收机使用跟踪算法来估计多普勒频率的多普勒频率和变化率,以便从接收信号中补偿I / Q采样的相位,以减少多普勒频率的影响。 在一个实施例中,提供了基于差分检测的数据比特解码。 在另一个实施例中,提供了基于相位补偿的数据比特解码,其中样本的相位被旋转以补偿相位误差。 在一个实施例中,提供多帧策略以增加信噪比(SNR)并提高灵敏度,其中连续帧中的类似放置样本在连续帧上相干相加。 在一个实施例中,加权样本以减少多帧策略中噪声的影响。
    • 5. 发明授权
    • Method of mixed data assisted and non data assisted navigation signal acquisition, tracking and reacquisition
    • 混合数据辅助和非数据辅助导航信号采集,跟踪和重新采集的方法
    • US07859456B2
    • 2010-12-28
    • US11548204
    • 2006-10-10
    • Chi-Shin WangZongde QiuZhike Jia
    • Chi-Shin WangZongde QiuZhike Jia
    • G01S19/24G01S19/25G01S19/27
    • G01S19/27G01S19/246G01S19/254
    • The present invention provides systems and methods for enabling a navigation signal receiver to perform both data assisted and non-data assisted integration to provide better integration during signal acquisition, reacquisition and tracking. In data assisted integration mode, a receiver uses known or predicted data bits to remove the modulated data bits of a received signal prior to integration. In non data assisted integration mode, when the data bits are not known or predictable, the receiver uses an optimal estimation or maximum likelihood algorithm to determine the polarities of the modulated data bits of the received signal. This may be done by determining which of various possible bit pattern yields the maximum integrated power. When the modulated data bits are not known or predictable over a limited range, the receiver carries out data assisted integration over the known or predictable data bits and additional non data assisted integration.
    • 本发明提供了使导航信号接收机能够执行数据辅助和非数据辅助集成的系统和方法,以在信号采集,重新采集和跟踪期间提供更好的集成。 在数据辅助积分模式中,接收机使用已知或预测的数据比特来在积分之前去除接收信号的调制数据比特。 在非数据辅助积分模式中,当数据比特未知或可预测时,接收机使用最优估计或最大似然算法来确定接收信号的调制数据比特的极性。 这可以通过确定各种可能的位模式中的哪一个产生最大集成功率来完成。 当调制数据位在有限范围内不知道或可预测时,接收机通过已知或可预测的数据位和附加的非数据辅助积分来执行数据辅助积分。
    • 6. 发明授权
    • Tire-patching tool and its patching method
    • 轮胎修补工具及其修补方法
    • US07832308B2
    • 2010-11-16
    • US12104676
    • 2008-04-17
    • Nan-Shin Wang
    • Nan-Shin Wang
    • B29C73/08
    • B29C73/08B29L2030/00
    • A tire-patching tool and its patching method includes a pneumatic tool for producing a rotation force with a preset rotating speed, and a tire-patching needle with a tire seal strip assembled on the pneumatic tool to be driven into a broken hole of a tire. In using, the pneumatic tool is started to transmit a rotation force to the tire-patching needle so that the tire-patching needle can be vertically driven into the tire in the direction of the broken hole to let the tire seal strip stuck in the broken hole of the tire, and then remove out the tire-patching needle to finish tire patching work. By the pneumatic tool driving the tire-patching needle to produce a rotation force, the tire seal strip can quickly and accurately be stuck in the broken hole of the tire, saving time and labor in carrying out tire patching work.
    • 轮胎修补工具及其修补方法包括用于产生具有预设旋转速度的旋转力的气动工具,以及轮胎修补针,其具有组装在气动工具上的轮胎密封条,以被驱动到轮胎的断裂孔中 。 在使用中,气动工具开始向轮胎修补针传递旋转力,使得轮胎修补针能够沿着破裂孔的方向垂直地驱动到轮胎中,以使轮胎密封条粘在破碎的 的轮胎,然后取出轮胎修补针,完成轮胎修补工作。 通过气动工具驱动轮胎修补针以产生旋转力,轮胎密封条可以快速准确地卡在轮胎的断裂孔中,节省进行轮胎修补工作的时间和人力。
    • 8. 发明申请
    • HIGH SENSITIVITY GNSS RECEIVER PLATFORM WITH SHARED MEMORY
    • 具有共享存储器的高灵敏度GNSS接收机平台
    • US20090002227A1
    • 2009-01-01
    • US11771976
    • 2007-06-29
    • Zhike JiaChi-Shin WangLianxue XiongHongyu Zhang
    • Zhike JiaChi-Shin WangLianxue XiongHongyu Zhang
    • G01S1/00
    • G01S19/37
    • Provided herein is multi-function platform comprising a plurality of devices and a large memory that is external to the devices and shared among the devices. In an embodiment, a Direct Memory Access (DMA) controller is provided for each device to efficiently transfer data between the device and the shared memory. More than one DMA may be provided for a device. For example, separate DMAs may be provided for different components of a device that perform different subfunctions enabling efficient transfer of data between the different components of the device and the shared memory. In another embodiment, each device comprises a local embedded memory and is provided with a DMA for transferring data between the local memory and the shared memory. Examples of devices that can be included in the platform include a GNSS receiver, a audio player, a video player, a wireless communication device, a routing device, or the like.
    • 本文提供的是包括多个设备的多功能平台和在设备外部并在设备之间共享的大型存储器。 在一个实施例中,为每个设备提供直接存储器访问(DMA)控制器以在设备和共享存储器之间有效地传输数据。 可以为设备提供多于一个的DMA。 例如,可以为执行不同子功能的设备的不同组件提供单独的DMA,从而能够在设备的不同组件和共享存储器之间有效地传输数据。 在另一个实施例中,每个设备包括本地嵌入式存储器,并且被提供有用于在本地存储器和共享存储器之间传送数据的DMA。 可以包括在平台中的设备的示例包括GNSS接收器,音频播放器,视频播放器,无线通信设备,路由设备等。
    • 9. 发明申请
    • METHODS AND SYSTEMS FOR TEMPERATURE RELATED FREQUENCY DRIFT COMPENSATION
    • 温度相关频率补偿补偿方法与系统
    • US20080198070A1
    • 2008-08-21
    • US11681568
    • 2007-03-02
    • Chi-Shin WangZhike JiaLianxue XiongYinghao Tu
    • Chi-Shin WangZhike JiaLianxue XiongYinghao Tu
    • G01C21/00G01S1/00
    • G01S19/235H03J7/04H03L1/02
    • 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.
    • 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。