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31. 发明授权

US07847726B2 Navigational signal tracking in low power mode 有权
标题翻译：低功率模式下的导航信号跟踪
公开(公告)号：US07847726B2
公开(公告)日：2010-12-07
申请号：US11615431
申请日：2006-12-22
申请人： Zhike Jia , Shridhara A. Kurethaya , Chi-Shin Wang
发明人： Zhike Jia , Shridhara A. Kurethaya , Chi-Shin Wang
IPC分类号： G01S1/00
CPC分类号： G01S19/34 , G01S19/24
摘要： The present invention provides systems and methods for navigational signal tracking in low power mode to conserve the power of handheld navigation receivers. In an embodiment, the receiver cycles between sleep and wakeup states. During the sleep state, most of the components of the receiver are powered off to conserve power, and during the wakeup state, the receiver tracks navigational signals. In an embodiment, the duty cycle of the sleep/wakeup states depends on the receiver dynamic state, e.g., whether the receiver is accelerating. In another embodiment, during the wakeup state, the receiver selects a tracking mode based on the signal strength. Under weak signal conditions, a tracking mode using a long integration to track the satellite signal is disclosed. In one embodiment, a tracking mode tracks the navigation signal by performing data aided integration using known or predicted data bits, such as the TLM and HOW words.
摘要翻译：本发明提供了用于低功率模式的导航信号跟踪的系统和方法，以节省手持式导航接收机的功率。在一个实施例中，接收器在睡眠和唤醒状态之间循环。在睡眠状态期间，接收机的大多数组件被关闭以节省功率，并且在唤醒状态期间，接收器跟踪导航信号。在一个实施例中，睡眠/唤醒状态的占空比取决于接收机的动态状态，例如接收机是否正在加速。在另一个实施例中，在唤醒状态期间，接收机基于信号强度来选择跟踪模式。在弱信号条件下，公开了使用长积分跟踪卫星信号的跟踪模式。在一个实施例中，跟踪模式通过使用已知或预测的数据位（诸如TLM和HOW字）执行数据辅助积分来跟踪导航信号。

32. 发明授权

US07456782B2 Timing calibration for fast signal reacquisition in navigational receivers 有权
标题翻译：导航接收机快速信号重新采集的定时校准
公开(公告)号：US07456782B2
公开(公告)日：2008-11-25
申请号：US11322654
申请日：2005-12-29
申请人： Chi-Shin Wang , Lianxue Xiong , Zhike Jia , Lei Dong , Jingbin Liu
发明人： Chi-Shin Wang , Lianxue Xiong , Zhike Jia , Lei Dong , Jingbin Liu
IPC分类号： G01S5/14
CPC分类号： G01S19/235 , G01S19/23 , G01S19/26 , G01S19/34
摘要： The present invention provides GPS receivers with clock calibration for fast reacquisition of GPS signals after waking up from a sleep state or coming out of signal blockage. In a preferred embodiment, a GPS receiver comprises a local clock based on an oscillator, e.g., crystal oscillator. The GPS receiver calculates a clock calibration value based on a computed oscillator count for the period during which the GPS receiver is in the sleep state or the signal is blocked. This clock calibration value is used to calibrate the local clock after the GPS receiver wakes up or comes out of signal blockage for fast reacquisition of GPS signals.
摘要翻译：本发明提供具有时钟校准的GPS接收机，用于在从休眠状态唤醒或从信号阻塞出来之后快速重新捕获GPS信号。在优选实施例中，GPS接收机包括基于例如晶体振荡器的振荡器的本地时钟。 GPS接收机基于GPS接收机处于睡眠状态或信号被阻塞的周期的计算振荡器计数来计算时钟校准值。该时钟校准值用于在GPS接收器唤醒或者信号阻塞之后校准本地时钟，以快速重新获取GPS信号。

33. 发明授权

US07428259B2 Efficient and flexible GPS receiver baseband architecture 有权
标题翻译：高效灵活的GPS接收机基带架构
公开(公告)号：US07428259B2
公开(公告)日：2008-09-23
申请号：US11123861
申请日：2005-05-06
申请人： Hansheng Wang , Chi-Shin Wang
发明人： Hansheng Wang , Chi-Shin Wang
IPC分类号： H04B1/00
CPC分类号： G01S19/37 , G01S19/235
摘要： The present invention provides a new baseband integrated circuit (IC) architecture for direct sequence spread spectrum (DSSS) communication receivers. The baseband IC has a single set of baseband correlators serving all channels in succession. No complex parallel channel hardware is required. A single on-chip code Numerically Controlled Oscillator (NCO) drives a pseudorandom number (PN) sequence generator, generates all code sampling frequencies, and is capable of self-correct through feedback from an off-chip processor. A carrier NCO generates corrected local frequencies. These on-chip NCOs generate all the necessary clocks. This architecture advantageously reduces the total hardware necessary for the receiver and the baseband IC thus can be realized with a minimal number of gate count. The invention can accommodate any number of channels in a navigational system such as the Global Positioning System (GPS), GLONASS, WAAS, LAAS, etc. The number of channels can be increased by increasing the circuit clock speed.
摘要翻译：本发明提供了一种用于直接序列扩频（DSSS）通信接收机的新的基带集成电路（IC）架构。基带IC具有一组基带相关器，连续地为所有通道服务。不需要复杂的并行通道硬件。单个片上代码数控振荡器（NCO）驱动伪随机数（PN）序列发生器，产生所有代码采样频率，并且能够通过来自片外处理器的反馈进行自校正。载波NCO产生校正的本地频率。这些片上NCO产生所有必需的时钟。该架构有利地减少了接收机和基带IC所需的总硬件，因此可以以最小数量的门数实现。本发明可以容纳诸如全球定位系统（GPS），GLONASS，WAAS，LAAS等导航系统中的任何数量的信道。可以通过增加电路时钟速度来增加信道数量。

34. 发明申请

US20080180321A1 METHODS AND SYSTEMS FOR ACQUISITION, REACQUISITION AND TRACKING OF WEAK NAVIGATIONAL SIGNALS 有权
标题翻译：弱导航信号的获取，反应和跟踪的方法和系统
公开(公告)号：US20080180321A1
公开(公告)日：2008-07-31
申请号：US11694786
申请日：2007-03-30
申请人： Chi-Shin Wang , Zhike Jia , Yue-Meng Chen , Jian Cheng , EnYuan Tu
发明人： Chi-Shin Wang , Zhike Jia , Yue-Meng Chen , Jian Cheng , EnYuan Tu
IPC分类号： G01S5/14 , G01S1/04
CPC分类号： H04B1/7075 , G01S19/235 , G01S19/29
摘要： Provided herein are systems and methods for achieving long coherent integration in a navigational receiver to improve the sensitivity of the receiver and enable the receiver to acquire, reacquire and track signals under very weak signal conditions. In an embodiment, phase compensation is computed based on estimated Doppler frequency, rate of change of the Doppler frequency with time, and second order rate of change of the Doppler frequency. The Doppler frequency may be computed from an orbital model or ephemeris. This phase compensation is used to compensate samples of the input signal for changes in the phase due to the Doppler frequency. Frequency components of the phase-compensated samples are then computed using a frequency analysis such as a Fast Fourier Transform (FFT). The maximum frequency component is taken as an error frequency and used to compensate the samples of the input signal for residual frequency error.
摘要翻译：本文提供了用于在导航接收机中实现长相干集成以提高接收机的灵敏度并使接收机能够在非常弱的信号条件下获取，重新获取和跟踪信号的系统和方法。在一个实施例中，基于估计的多普勒频率，多普勒频率随时间的变化率和多普勒频率的二阶变化率来计算相位补偿。多普勒频率可以从轨道模型或星历计算。该相位补偿用于补偿由于多普勒频率引起的相位变化的输入信号的样本。然后使用诸如快速傅立叶变换（FFT）的频率分析来计算相位补偿样本的频率分量。将最大频率分量作为误差频率，用于补偿输入信号的样本以获得残余频率误差。

35. 发明授权

US07324045B2 System and method for fast initialization of navigational satellite signal receivers 有权
标题翻译：导航卫星信号接收机快速初始化的系统和方法
公开(公告)号：US07324045B2
公开(公告)日：2008-01-29
申请号：US11124413
申请日：2005-05-06
申请人： Jun Mo , Hansheng Wang , Chi-Shin Wang , Shaowei Han , Kudrethaya A. Shridhara
发明人： Jun Mo , Hansheng Wang , Chi-Shin Wang , Shaowei Han , Kudrethaya A. Shridhara
IPC分类号： G01S1/00 , H04B7/185 , H04B1/00
CPC分类号： G01S19/28
摘要： The present invention provides a method and apparatus for a satellite navigation receiver to lock onto satellite signals in the cold start mode with no information on the receiver position, the satellite position, or time estimates stored in the receiver's memory. All satellites in a positioning system are divided into groups based on the satellite constellation structure. In an embodiment, the positioning system is the Global Positioning System (GPS) and all GPS satellites are divided into three groups. During initialization of the receiver, the satellites are searched per group to lock onto at least one satellite signal. Other satellites are then searched in a given order based on their respective distance or proximity to the first satellite acquired. This method reduces the Time-to-First-Fix (TTFF) ordinarily required by conventional receivers in the cold start mode.
摘要翻译：本发明提供了一种用于卫星导航接收机在冷启动模式下锁定卫星信号的方法和装置，其中没有关于存储在接收机的存储器中的接收机位置，卫星位置或时间估计的信息。基于卫星星座结构将定位系统中的所有卫星分成几组。在一个实施例中，定位系统是全球定位系统（GPS），所有GPS卫星分为三组。在接收机的初始化期间，每组搜索卫星以锁定至少一个卫星信号。然后根据其相应的距离或与所获取的第一卫星的距离，以给定的顺序搜索其他卫星。这种方法减少了常规接收机在冷启动模式下通常要求的首次固定时间（TTFF）。

36. 发明授权

US06580455B1 High definition image sensor 失效
标题翻译：高分辨率图像传感器
公开(公告)号：US06580455B1
公开(公告)日：2003-06-17
申请号：US09073128
申请日：1998-05-05
申请人： Chi-Shin Wang , Zhimin Zhou , Li-Yen Shih
发明人： Chi-Shin Wang , Zhimin Zhou , Li-Yen Shih
IPC分类号： H04N314
CPC分类号： H04N5/363 , H04N5/365
摘要： An improved image sensing array including a semiconductive substrate having formed therein an array of discrete substrate areas organized in rows and columns. The array of areas is segmented into a plurality of blocks, each including a sub-array of the areas. At least one of the rows of each block has at least one reader cell formed therein, and the remaining rows of the block have photosensor cells formed in each area thereof. Each column of each block forms a column block including a plurality of photosensor cells, and a node line communicatively coupling each photosensor cell of the column block to an associated reader cell. A row address line is coupled to each photosensor cell in a particular row of the array. A column bit line is coupled to each reader cell in a particular column of the array. A block select line is coupled to each reader cell in a particular row of the array containing reader cells. In response to row select and block select inputs to the row address lines and the block select lines respectively, image data captured by each the photosensor cell is read out to a corresponding column-bit line through an associated reader cell for input to an output processing means. The output processing means may include a device for interpolating the data state of the image data supplanted by each reader cell of the array.
摘要翻译：一种改进的图像感测阵列，包括其中形成有以行和列组织的离散衬底区域的阵列的半导体衬底。区域阵列被分割成多个块，每个块包括区域的子阵列。每个块的行中的至少一行具有形成在其中的至少一个读取器单元，并且该块的其余行在其每个区域中形成有光电传感器单元。每个块的每列形成包括多个光电传感器单元的列块，以及将列块的每个光电传感器单元通信耦合到相关读取器单元的节点线。行地址线耦合到阵列的特定行中的每个光电传感器单元。列位线耦合到阵列的特定列中的每个读取器单元。块选择线耦合到包含读取器单元的阵列的特定行中的每个读取器单元。响应于对行地址线和块选择线的行选择和块选择输入，每个光电传感器单元捕获的图像数据通过相关联的读取器单元读出到对应的列位线，以输入到输出处理手段。输出处理装置可以包括用于内插由阵列的每个读取器单元取代的图像数据的数据状态的装置。

37. 发明授权

US4152715A Silicon base CCD-bipolar transistor compatible methods and products 失效
标题翻译：硅基CCD双极晶体管兼容方法和产品
公开(公告)号：US4152715A
公开(公告)日：1979-05-01
申请号：US855514
申请日：1977-11-28
申请人： Chi-Shin Wang
发明人： Chi-Shin Wang
IPC分类号： H01L21/8234 , H01L21/8248 , H01L21/8249 , H01L27/148 , H01L27/10
CPC分类号： H01L27/14875 , H01L21/823406 , H01L21/8248 , H01L21/8249
摘要： CCDs and bipolar transistors are formed together on a silicon chip. For n channel CCDs and npn transistors, only a single extra diffusion is necessary in addition to the diffusions used for the CCDs alone. This step is diffusion of n.sup.+ collector wells, and is performed before CCD channel stop-transistor base diffusion. For p channel CCDs and pnp transistors, two extra diffusions are necessary and are: diffusion of a p collector wells, and diffusion of n.sup.+ base contracts; the extra diffusions may both be performed before CCD channel stop-transistor base diffusion, or the n.sup.+ base contact diffusion may be performed thereafter.
摘要翻译： CCD和双极晶体管一起形成在硅芯片上。对于n沟道CCD和npn晶体管，除了仅用于CCD的扩散之外，仅需要单个额外的扩散。该步骤是n +集电极阱的扩散，并在CCD通道停止晶体管基极扩散之前进行。对于p沟道CCD和pnp晶体管，需要两个额外的扩散，并且是：p个收集器阱的扩散以及n +基底合约的扩散; 可以在CCD通道停止 - 晶体管基极扩散之前执行额外的扩散，或者可以在其后执行n +基极接触扩散。

38. 发明授权

US08391339B2 Correlator sum method for spread spectrum signal receivers 有权
标题翻译：扩频信号接收机的相关器和方法
公开(公告)号：US08391339B2
公开(公告)日：2013-03-05
申请号：US11428800
申请日：2006-07-05
申请人： Chi-Shin Wang , Jian Cheng , Zhike Jia , Shridhara A. Kudrethaya
发明人： Chi-Shin Wang , Jian Cheng , Zhike Jia , Shridhara A. Kudrethaya
IPC分类号： H04B1/00
CPC分类号： H04B1/7075 , H04B1/7085 , H04B1/7095 , H04B2201/70715
摘要： The present invention provides systems and methods for faster acquisition and more stable tracking of spread spectrum signals with lower computational load requirements. Instead of the present day practice of using only the Prompt correlator, the systems and methods of the invention use the sum of the powers of all the correlators of a channel to determine the acquisition or tracking of the signal. These systems and methods improve the signal acquisition speed resulting in a reduced Time-To-First-Fix (TTFF). Further, these systems and methods improve the acquisition and tracking sensitivity of the receiver.
摘要翻译：本发明提供了具有较低计算负荷要求的用于更快速采集和更稳定地跟踪扩频信号的系统和方法。代替现在仅使用提示相关器的做法，本发明的系统和方法使用信道的所有相关器的功率之和来确定信号的采集或跟踪。这些系统和方法提高了信号采集速度，从而缩短了首次固定时间（TTFF）。此外，这些系统和方法提高了接收机的采集和跟踪灵敏度。

39. 发明授权

US07743177B2 High sensitivity global navigation satellite system (GNSS) receiver platform having DMA controller for transferring between internal and external memory 有权
标题翻译：具有DMA控制器的高灵敏度全球导航卫星系统（GNSS）接收器平台，用于在内部和外部存储器之间传输
公开(公告)号：US07743177B2
公开(公告)日：2010-06-22
申请号：US11771976
申请日：2007-06-29
申请人： Zhike Jia , Chi-Shin Wang , Lianxue Xiong , Hongyu Zhang
发明人： Zhike Jia , Chi-Shin Wang , Lianxue Xiong , Hongyu Zhang
IPC分类号： G01S1/00 , G01S5/14 , G06F3/00
CPC分类号： G01S19/37
摘要： 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.
摘要翻译：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。

40. 发明授权

US07693211B2 Fast fourier transform based phase locked loop for navigational receivers 失效
标题翻译：用于导航接收机的快速傅里叶变换基于锁相环
公开(公告)号：US07693211B2
公开(公告)日：2010-04-06
申请号：US11379451
申请日：2006-04-20
申请人： Chi-Shin Wang , Yue Meng Chen , Zhike Jia
发明人： Chi-Shin Wang , Yue Meng Chen , Zhike Jia
IPC分类号： H04B1/00
CPC分类号： G01S19/24
摘要： Fast Fourier Transform (FFT) based Phase Lock Loops (PLLs) are provided for use in navigational signal receivers. In an embodiment, a navigation receiver correlates a received navigational signal with a locally generated signal into correlation samples, e.g., one-millisecond correlation samples. The navigation receiver includes a FFT based PLL that corrects phase shifts in the correlation samples due to the Doppler frequency by considering both the Doppler frequency and its rate of change, which are obtained from a FFT computation with interpolation. The phase corrected correlation samples are then integrated over a length of a navigation data bit, e.g., 20 milliseconds, to determine the sign of the data bit of the received signal. In another embodiment, a soft decision feedback technique involving integration extending over the present data bit and several prior data bits is used to determine the sign of a present data bit of the received signal.
摘要翻译：基于快速傅里叶变换（FFT）的锁相环（PLL）被提供用于导航信号接收机。在一个实施例中，导航接收器将接收到的导航信号与本地生成的信号相关联成相关样本，例如，一毫秒相关样本。导航接收机包括基于FFT的PLL，其通过考虑从具有插值的FFT计算获得的多普勒频率及其变化率来校正由于多普勒频率引起的相关样本中的相移。然后将相位校正的相关样本在导航数据位的长度（例如20毫秒）上积分，以确定接收信号的数据位的符号。在另一个实施例中，使用涉及在当前数据位和若干先前数据位上延伸的积分的软判决反馈技术来确定接收信号的当前数据位的符号。

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