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    Television receiver suitable for multi-standard operation and method therefor
    1.
    发明授权
    Television receiver suitable for multi-standard operation and method therefor 有权
    适用于多标准操作的电视接收机及其方法

    公开(公告)号：US07675996B2

    公开(公告)日：2010-03-09

    申请号：US11194034

    申请日：2005-07-29

    申请人： Richard A. Johnson ,  James M. Nohrden ,  Scott T. Dupuie ,  Andrew W. Dornbusch

    发明人： Richard A. Johnson ,  James M. Nohrden ,  Scott T. Dupuie ,  Andrew W. Dornbusch

    IPC分类号： H03K9/00 ,  H04L27/00

    CPC分类号： H03J1/0008 ,  H03D7/00 ,  H04B1/0007 ,  H04B1/28 ,  H04B15/04 ,  H04B2215/064 ,  H04B2215/065 ,  H04N5/4446 ,  H04N5/46 ,  H04N21/4263 ,  H04N21/4305

    摘要： A receiver (1100) includes a direct digital frequency synthesizer (130), a mixer (105), and a clock source (1110, 1130). The direct digital frequency synthesizer has an input terminal for receiving a first clock signal at a first frequency, and an output terminal for providing a digital local oscillator signal synchronously with the first clock signal. The mixer (105) has a first input terminal for receiving a radio frequency (RF) signal, a second input terminal coupled to the output terminal of the direct digital frequency synthesizer (130), and an output terminal for providing an IF signal having a spectrum centered about a selectable one of a plurality of center frequencies. The clock source (1110, 1130) has an output terminal for providing the first clock signal without using a harmonic frequency that overlaps the spectrum for the plurality of center frequencies.

    摘要翻译： 接收器（1100）包括直接数字频率合成器（130），混频器（105）和时钟源（1110,1130）。 直接数字频率合成器具有用于以第一频率接收第一时钟信号的输入端子和用于与第一时钟信号同步地提供数字本地振荡器信号的输出端子。 混频器（105）具有用于接收射频（RF）信号的第一输入端，耦合到直接数字频率合成器（130）的输出端的第二输入端，以及用于提供IF信号的输出端， 频谱以多个中心频率中的可选择的一个为中心。 时钟源（1110,1130）具有用于提供第一时钟信号的输出端，而不使用与多个中心频率的频谱重叠的谐波频率。

    Method and apparatus for generation of test bitstreams and testing of closed loop transducers
    2.
    发明授权
    Method and apparatus for generation of test bitstreams and testing of closed loop transducers 有权
    用于产生测试比特流和闭环换能器测试的方法和装置

    公开(公告)号：US6023960A

    公开(公告)日：2000-02-15

    申请号：US304421

    申请日：1999-04-28

    申请人： Michael L. Abrams ,  Ben W. Jones ,  Franklin W. Mayo ,  Scott T. Dupuie ,  Jeffery C. Gannon ,  Richard A. Johnson

    发明人： Michael L. Abrams ,  Ben W. Jones ,  Franklin W. Mayo ,  Scott T. Dupuie ,  Jeffery C. Gannon ,  Richard A. Johnson

    IPC分类号： G01P21/00 ,  G01C17/38

    CPC分类号： G01P21/00

    摘要： A high performance method and apparatus for testing a closed loop transducer is disclosed. A test bitstream signal is combined with a .SIGMA..DELTA. feedback bitstream of the transducer to produce a combined bitstream which is converted to a physical feedback to the sensor of the transducer. The .SIGMA..DELTA. bitstream output of the transducer is recorded for later analysis so as to test characteristics of the transducer. The test bitstream signal is preferably an oversampled, pulse density modulated signal. A testing arrangement is provided which is based upon the storage of short-length test patterns which are repetitively accessed to form a continuous test pattern. The test bitstream provided by the method of the invention produces very low noise and low distortion test signals where a repetitive test pattern is equivalent in length to one period of the test signal.

    摘要翻译： 公开了一种用于测试闭环换能器的高性能方法和装置。 测试比特流信号与换能器的SIGMA DELTA反馈比特流组合以产生被转换成对换能器的传感器的物理反馈的组合比特流。 记录换能器的SIGMA DELTA比特流输出用于后续分析，以便测试换能器的特性。 测试比特流信号优选地是过采样的脉冲密度调制信号。 提供了一种测试装置，其基于重复访问的短长度测试图案的存储，以形成连续的测试图案。 通过本发明的方法提供的测试比特流产生非常低的噪声和低失真测试信号，其中重复测试模式长度与测试信号的一个周期相等。

    Method and apparatus for generation of test bitstreams and testing of close loop transducers
    3.
    发明授权
    Method and apparatus for generation of test bitstreams and testing of close loop transducers 失效
    用于产生测试比特流的方法和装置以及闭环换能器的测试

    公开(公告)号：US6101864A

    公开(公告)日：2000-08-15

    申请号：US992663

    申请日：1997-12-17

    申请人： Michael L. Abrams ,  Ben W. Jones ,  Franklin W. Mayo ,  Scott T. Dupuie ,  Jeffery C. Gannon ,  Richard A. Johnson

    发明人： Michael L. Abrams ,  Ben W. Jones ,  Franklin W. Mayo ,  Scott T. Dupuie ,  Jeffery C. Gannon ,  Richard A. Johnson

    IPC分类号： G01P21/00 ,  G01C17/38

    CPC分类号： G01P21/00

    摘要： A high performance method and apparatus for testing a closed loop transducer is disclosed. A test bitstream signal is combined with a .SIGMA..DELTA. feedback bitstream of the transducer to produce a combined bitstream which is converted to a physical feedback to the sensor of the transducer. The .SIGMA..DELTA. bitstream output of the transducer is recorded for later analysis so as to test characteristics of the transducer. The test bitstream signal is preferably an oversampled, pulse density modulated signal. A testing arrangement is provided which is based upon the storage of short-length test patterns which are repetitively accessed to form a continuous test pattern. The test bitstream provided by the method of the invention produces very low noise and low distortion test signals where a repetitive test pattern is equivalent in length to one period of the test signal.

    摘要翻译： 公开了一种用于测试闭环换能器的高性能方法和装置。 测试比特流信号与换能器的SIGMA DELTA反馈比特流组合以产生被转换成对换能器的传感器的物理反馈的组合比特流。 记录换能器的SIGMA DELTA比特流输出用于后续分析，以便测试换能器的特性。 测试比特流信号优选地是过采样的脉冲密度调制信号。 提供了一种测试装置，其基于重复访问的短长度测试图案的存储，以形成连续的测试图案。 通过本发明的方法提供的测试比特流产生非常低的噪声和低失真测试信号，其中重复测试模式长度与测试信号的一个周期相等。

    Method and apparatus for calibration of stray capacitance mismatch in a closed loop electro-mechanical accelerometer
    4.
    发明授权
    Method and apparatus for calibration of stray capacitance mismatch in a closed loop electro-mechanical accelerometer 有权
    用于校准闭环机电加速度计中杂散电容失配的方法和装置

    公开(公告)号：US6035694A

    公开(公告)日：2000-03-14

    申请号：US268072

    申请日：1999-03-12

    申请人： Scott T. Dupuie ,  Richard A. Johnson ,  Ben W. Jones ,  Mauricio A. Zavaleta ,  Mark E. Burchfield ,  Burton A. Devolk ,  Franklin W. Mayo ,  Michael L. Abrams ,  Roger Maher

    发明人： Scott T. Dupuie ,  Richard A. Johnson ,  Ben W. Jones ,  Mauricio A. Zavaleta ,  Mark E. Burchfield ,  Burton A. Devolk ,  Franklin W. Mayo ,  Michael L. Abrams ,  Roger Maher

    IPC分类号： G01P15/125 ,  G01P15/13 ,  G01P21/00 ,  G01P15/00

    CPC分类号： G01P21/00 ,  G01P15/125 ,  G01P15/131

    摘要： A method and apparatus for measuring and compensating for stray capacitance of a micro-machined sensor of an accelerometer system is disclosed. Stray capacitance differences between a top plate and a sensing element and between a bottom plate and the sensing element degrade accelerometer performance if not compensated for. Measurement of stray capacitance difference is achieved by operating the accelerometer in two calibration phases and measuring the steady-state output voltage in each of the two phases. In calibration phase 1, no force is applied to the sensor during clock intervals 1-4. In calibration phase 2, a dummy force up is applied and then a dummy force down is applied during those intervals 1-4. The difference in the output voltage of the two calibration phases is representative of the difference in stray capacitance of the sensor. Capacitance is added to the top or bottom plates in an amount proportional to the measured stray capacitance. The procedure is repeated until the voltage difference of the two calibration phases is zeroed, which is indicative that the inherent stray capacitance has been zeroed.

    摘要翻译： 公开了一种用于测量和补偿加速度计系统的微加工传感器的杂散电容的方法和装置。 顶板和感测元件之间以及底板和感测元件之间的杂散电容差会降低加速度计的性能，如果没有得到补偿。 通过在两个校准阶段中操作加速度计并测量两相中的每一个的稳态输出电压来实现杂散电容差的测量。 在校准阶段1中，在时钟间隔1-4期间，传感器不会施加力。 在校准阶段2中，施加虚拟加力，然后在这些间隔1-4期间施加虚拟力。 两个校准相位的输出电压的差异代表传感器杂散电容的差异。 将电容以与测量的杂散电容成比例的量加到顶板或底板上。 重复该过程，直到两个校准相的电压差为零，这表明固有杂散电容已被归零。

    MIXING DAC AND POLYPHASE FILTER ARCHITECTURES FOR A RADIO FREQUENCY RECEIVER
    5.
    发明申请
    MIXING DAC AND POLYPHASE FILTER ARCHITECTURES FOR A RADIO FREQUENCY RECEIVER 审中-公开
    无线电频率接收机的混合DAC和多相滤波器架构

    公开(公告)号：US20080132189A1

    公开(公告)日：2008-06-05

    申请号：US11565481

    申请日：2006-11-30

    申请人： Adrian Maxim ,  Matthew Powell ,  Scott T. Dupuie ,  Richard A. Johnson

    发明人： Adrian Maxim ,  Matthew Powell ,  Scott T. Dupuie ,  Richard A. Johnson

    IPC分类号： H04B1/18

    CPC分类号： H04B1/28

    摘要： A receiver (200) includes a mixing digital-to-analog converter (DAC) (208), a direct digital frequency synthesizer (DDFS), a transimpedance amplifier (TIA) (204) and a first polyphase filter (PPF) (202). The mixing DAC (208) includes a radio frequency (RF) transconductance section for providing an RF current signal responsive to an RF signal and a switching section. The switching section is coupled to the RF transconductance section and includes inputs for receiving bits associated with a digital local oscillator (LO) signal. The switching section is configured to mix the RF current signal with the digital LO signal to provide an analog output signal at outputs of the switching section. The transimpedance amplifier (TIA) (204) includes inputs each coupled to a respective one of the outputs of the switching section and outputs. The first PPF (202) includes inputs each coupled to a respective one the outputs of the TIA (204).

    摘要翻译： 接收器（200）包括混合数模转换器（DAC）（208），直接数字频率合成器（DDFS），跨阻抗放大器（TIA）（204）和第一多相滤波器（PPF） 。 混合DAC（208）包括射频（RF）跨导部分，用于响应于RF信号和切换部分提供RF电流信号。 开关部分耦合到RF跨导部分，并且包括用于接收与数字本地振荡器（LO）信号相关联的位的输入。 开关部分被配置为将RF电流信号与数字LO信号混合，以在开关部分的输出处提供模拟输出信号。 跨阻放大器（TIA）（204）包括各自耦合到开关部分的相应输出端和输出端的输入端。 第一PPF（202）包括各自与TIA（204）的输出相连接的输入。

    Selectable high-side/low-side mix for high intermediate frequency (IF) receivers
    7.
    发明授权
    Selectable high-side/low-side mix for high intermediate frequency (IF) receivers 有权
    用于高中频（IF）接收机的可选高边/低边混合

    公开(公告)号：US07558546B2

    公开(公告)日：2009-07-07

    申请号：US11239991

    申请日：2005-09-30

    申请人： Richard A. Johnson ,  James M. Nohrden ,  Li Gao

    发明人： Richard A. Johnson ,  James M. Nohrden ,  Li Gao

    IPC分类号： H04B1/18

    CPC分类号： H03D7/166

    摘要： A method in which one of a high-side mix mode and a low-side mix mode is selected in response to an interference characteristic of a desired channel of a radio frequency (RF) input signal is disclosed. In the high-side mix mode, a direct digital frequency synthesizer (130) is initialized to output a digital local oscillator signal at a first frequency suitable for performing a high-side mix of the desired channel to an intermediate frequency (IF). In the low-side mix mode, the direct digital frequency synthesizer (130) is initialized to output the digital local oscillator signal at a second frequency suitable for performing a low-side mix of the desired channel to said IF. The RF input signal is mixed with the digital local oscillator signal to provide an IF output signal at the IF.

    摘要翻译： 公开了响应于射频（RF）输入信号的期望信道的干扰特性来选择高侧混合模式和低侧混合模式之一的方法。 在高侧混合模式中，直接数字频率合成器（130）被初始化，以便将第一频率的数字本地振荡器信号输出到适于执行期望信道的高侧混频到中频（IF）。 在低侧混合模式中，直接数字频率合成器（130）被初始化，以便以适于执行期望信道的低端混合的所述IF的第二频率输出数字本地振荡器信号。 RF输入信号与数字本地振荡器信号混合，以在IF提供IF输出信号。

    Method of generating anthropomophic vehicle images
    8.
    发明授权
    Method of generating anthropomophic vehicle images 有权
    产生人类学车辆图像的方法

    公开(公告)号：US09280919B2

    公开(公告)日：2016-03-08

    申请号：US13526316

    申请日：2012-06-18

    申请人： Richard A. Johnson ,  Michael A. Wuergler

    发明人： Richard A. Johnson ,  Michael A. Wuergler

    IPC分类号： G06T13/40 ,  G09B29/10

    CPC分类号： G09B29/106 ,  G06T13/40

    摘要： A method of generating anthropomorphic vehicle images for a vehicle owner is shown that includes providing a plurality of anthropomorphic vehicle images on a visual display for a vehicle owner to select; receiving a selection of an anthropomorphic vehicle image from the vehicle owner using a wireless device; obtaining vehicle data using one or more vehicle sensors located on the vehicle; altering at least a portion of the selected anthropomorphic vehicle image based on the accessed vehicle data; and displaying the altered anthropomorphic vehicle image on a wireless device to the vehicle owner.

    摘要翻译： 示出了为车主生成拟人车辆图像的方法，其包括在视觉显示器上提供多个人形车辆图像以供车主选择; 使用无线设备从车主接收选择的拟人车辆图像; 使用位于车辆上的一个或多个车辆传感器获取车辆数据; 基于所访问的车辆数据改变所选择的拟人车辆图像的至少一部分; 以及在无线设备上向车主显示改变的拟人车辆图像。

    System for and method of monitoring real time traffic conditions using probe vehicles
    9.
    发明授权
    System for and method of monitoring real time traffic conditions using probe vehicles 有权
    使用探测车监控实时交通状况的系统和方法

    公开(公告)号：US08112219B2

    公开(公告)日：2012-02-07

    申请号：US11272577

    申请日：2005-11-11

    申请人： Richard A. Johnson ,  Martin A. Ferman

    发明人： Richard A. Johnson ,  Martin A. Ferman

    IPC分类号： G06F19/00 ,  G01C21/00 ,  G01C21/30

    CPC分类号： G08G1/0104 ,  G08G1/20

    摘要： A system and method for updating and communicating traffic information to at least one receiving vehicle includes a traffic information center and at least one probe vehicle. In a preferred embodiment, major road sections are represented as links, the center stores and updates a parent map database of links that are associable with a first value of a condition, each probe vehicle is configured to receive a copy of the database either periodically or upon request, determine a second value of the condition, and compare the first and second values to determine a condition discrepancy. Where the discrepancy surpasses a threshold, each probe vehicle is further configured to upload at least the second value to the center, so as to update the parent map database.

    摘要翻译： 用于向至少一个接收车辆更新和传送交通信息的系统和方法包括交通信息中心和至少一个探测车辆。 在优选实施例中，主要道路部分被表示为链接，中心存储并更新与条件的第一值相关联的链接的父图谱数据库，每个探测车辆被配置为周期性地接收数据库的副本， 根据请求确定条件的第二值，并比较第一和第二值以确定条件差异。 在差异超过阈值的情况下，每个探测车辆还被配置为至少将第二值上传到中心，以便更新父图谱数据库。

    Method of Detecting the Opening of Closed Roads
    10.
    发明申请
    Method of Detecting the Opening of Closed Roads 有权
    检查封闭道路开放的方法

    公开(公告)号：US20110231087A1

    公开(公告)日：2011-09-22

    申请号：US12727379

    申请日：2010-03-19

    申请人： Richard A. Johnson ,  Steven C. Tengler

    发明人： Richard A. Johnson ,  Steven C. Tengler

    IPC分类号： G01C21/36

    CPC分类号： G01C21/3461 ,  G01C21/3415

    摘要： The described principles provide a method and system for identifying a potentially closed road based on reroute requests, and of accommodating the potential road closure while continuing to test the road status periodically via routing decisions and rerouting requests. While the optimal route assumes that the potentially closed road is open, a replacement route is defined assuming that the potentially closed road is closed. A fraction of users are sent along the optimal route, and if a reroute request is received, the potentially closed road is assumed to be closed still. The affected user is rerouted to a recovery route that matches the optimal route up to the potentially closed road, and then differs from the optimal route thereafter to avoid the potentially closed road.

    摘要翻译： 所描述的原理提供了一种用于基于重新路由请求识别潜在封闭道路的方法和系统，并且通过路由决定和重新路由请求周期性地继续测试道路状态来容纳潜在的道路封闭。 虽然最佳路线假定可能封闭的道路是敞开的，但假设可能封闭的道路关闭，则定义替换路线。 按照最佳路线发送一小部分用户，如果收到重新路由请求，则假设潜在的封闭道路静止。 受影响的用户被重新路由到与最佳路由匹配的恢复路由，直到潜在的封闭道路，然后与最佳路由不同，以避免潜在的封闭道路。