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1. 发明申请

US20070096810A1 Dual mode power amplifier 有权
标题翻译：双模功率放大器
公开(公告)号：US20070096810A1
公开(公告)日：2007-05-03
申请号：US11259006
申请日：2005-10-25
申请人： Michael Hageman , Dale Brandt , David Ripley
发明人： Michael Hageman , Dale Brandt , David Ripley
IPC分类号： H03G5/16
CPC分类号： H03G3/3042 , H03F1/0277 , H03F3/211 , H03F3/72 , H03F2200/222 , H03F2200/387 , H03F2203/7206 , H03F2203/7239
摘要： A power amplifier is configured to operate in a first gain mode and a second gain mode. A first power amplifier input stage has an input and an output. A second power amplifier input stage has an input and an output, where the output of the second power amplifier input stage is coupled to the output of the first power amplifier input stage. The first input stage is turned on in response to a first bias voltage in the first gain mode and the second input stage is turned on in response to a second bias voltage in the second gain mode. Alternatively, a first input stage and an intermediate stage can be switched off by turning off their respective bias voltages, and a second input stage can be switched on by turning on its respective bias voltage; the intermediate stage and the second input stage sharing a common output.
摘要翻译：功率放大器被配置为以第一增益模式和第二增益模式操作。第一功率放大器输入级具有输入和输出。第二功率放大器输入级具有输入和输出，其中第二功率放大器输入级的输出耦合到第一功率放大器输入级的输出。第一输入级响应于第一增益模式中的第一偏置电压而导通，并且第二输入级响应于第二增益模式中的第二偏置电压而导通。或者，可以通过关闭它们各自的偏置电压来关闭第一输入级和中间级，并且可以通过接通其各自的偏置电压来接通第二输入级; 中间级和第二输入级共享公共输出。

2. 发明申请

US20060181351A1 Power control circuit for accurate control of power amplifier output power 有权
标题翻译：功率控制电路，用于精确控制功率放大器输出功率
公开(公告)号：US20060181351A1
公开(公告)日：2006-08-17
申请号：US11061679
申请日：2005-02-17
申请人： David Ripley
发明人： David Ripley
IPC分类号： H03G3/10
CPC分类号： H03F1/0216 , H03F2200/426 , H03F2200/462 , H03F2200/471 , H03F2200/474 , H03G3/004
摘要： According to an exemplary embodiment, an amplification module includes a power control circuit. The amplification module further includes a power amplifier coupled to the power control circuit and configured to draw a supply current and receive a supply voltage from the power control circuit. The power control circuit is configured to control a DC power provided to the power amplifier by controlling a product of a sense current, which is a mirror current of the supply current, and the supply voltage. The power control circuit includes a feedback voltage that corresponds to the product of the sense current and the supply voltage. The power control circuit further includes an analog multiplier circuit configured to receive the sense current and the supply voltage and generate the feedback voltage. The power control circuit further includes a differential error amplifier configured to compare the feedback voltage to a control voltage.
摘要翻译：根据示例性实施例，放大模块包括功率控制电路。放大模块还包括功率放大器，耦合到功率控制电路并且被配置为绘制电源电流并从功率控制电路接收电源电压。功率控制电路被配置为通过控制作为供电电流的反射电流的感测电流和电源电压的乘积来控制提供给功率放大器的DC电力。功率控制电路包括对应于感测电流和电源电压的乘积的反馈电压。功率控制电路还包括被配置为接收感测电流和电源电压并产生反馈电压的模拟乘法器电路。功率控制电路还包括差分误差放大器，其被配置为将反馈电压与控制电压进行比较。

3. 发明申请

US20060091960A1 Current limit circuit for power amplifiers 有权
标题翻译：功率放大器限流电路
公开(公告)号：US20060091960A1
公开(公告)日：2006-05-04
申请号：US10979966
申请日：2004-11-02
申请人： Kerry Phillips , David Ripley
发明人： Kerry Phillips , David Ripley
IPC分类号： H03F1/52
CPC分类号： H03F1/30 , H03F1/0211 , H03F1/52
摘要： According to one embodiment of the invention, a circuit arrangement includes a regulator circuit. The circuit arrangement further includes a current limit circuit coupled to the regulator circuit. The circuit arrangement further includes a power amplifier coupled to the regulator circuit, where the power amplifier is configured to draw a first current from the regular circuit. The current limit circuit is configured to decrease the first current when the first current causes a second current in the current limit circuit to be greater than a reference current. According to this embodiment, the second current is a mirror current of the first current. The current limit circuit includes a current sink, where the current sink is configured to sink the reference current to ground. The current limit circuit further includes a feedback loop, where the feedback loop causes the second current to be substantially equal to the reference current.
摘要翻译：根据本发明的一个实施例，电路装置包括调节器电路。电路装置还包括耦合到调节器电路的限流电路。电路装置还包括耦合到调节器电路的功率放大器，其中功率放大器配置成从常规电路中抽出第一电流。电流限制电路被配置为当第一电流使电流限制电路中的第二电流大于参考电流时，减小第一电流。根据本实施例，第二电流是第一电流的反射镜电流。电流限制电路包括电流吸收器，其中电流吸收器被配置为将参考电流吸收到地。电流限制电路还包括反馈回路，其中反馈回路使得第二电流基本上等于参考电流。

4. 发明申请

US20100000368A1 Aerobar Assembly 有权
标题翻译：机场大会
公开(公告)号：US20100000368A1
公开(公告)日：2010-01-07
申请号：US12202461
申请日：2008-09-02
申请人： Joshua Poertner , Lance Johnson , Andrew Ording , David Ripley
发明人： Joshua Poertner , Lance Johnson , Andrew Ording , David Ripley
IPC分类号： B62K21/12 , G05G11/00
CPC分类号： B62K21/125 , B62K23/06 , Y10T74/20287 , Y10T74/2078 , Y10T74/20822
摘要： An aerobar assembly for a bicycle that generally includes an aerobar, an adaptor and a control cable guide. The aerobar includes proximal and distal portions and proximal and distal ends. The aerobar has a generally hollow interior. The adaptor mounts an actuator assembly to the aerobar. The adaptor includes an interiorly-disposed portion and an exteriorly-disposed portion. The interiorly-disposed portion is disposed in the hollow interior of the aerobar and is bonded to the distal portion of the aerobar. The exteriorly-disposed portion is configured to receive the actuator assembly. The control cable guide is configured to slidably receive a control cable therethrough. The control cable guide is coupled to the adaptor such that the control cable enters the distal end, extends through the interior of the aerobar, and exits the proximal end of the aerobar.
摘要翻译：一种用于自行车的悬架组件，其通常包括一个安全杆，一个适配器和一个控制电缆引导件。所述突出部件包括近端和远端部分以及近端和远端。安全系统具有大致中空的内部空间。适配器将致动器组件安装到机动车上。适配器包括内部设置部分和外部设置部分。内部设置的部分设置在所述悬臂的中空内部并且结合到所述悬臂的远端部分。外部设置的部分构造成接收致动器组件。控制电缆引导件构造成可滑动地接收通过其的控制电缆。控制电缆引导件联接到适配器，使得控制电缆进入远端，延伸穿过安全支架的内部，并离开安全气的近端。

5. 发明授权

US07443246B2 Constant current biasing circuit for linear power amplifiers 有权
标题翻译：线性功率放大器的恒流偏置电路
公开(公告)号：US07443246B2
公开(公告)日：2008-10-28
申请号：US10691115
申请日：2003-10-21
申请人： Paul Andrys , Mark Bloom , Hugh J. Finlay , David Ripley , Terry Shie , Kevin Hoheisel
发明人： Paul Andrys , Mark Bloom , Hugh J. Finlay , David Ripley , Terry Shie , Kevin Hoheisel
IPC分类号： H03F3/04
CPC分类号： H03F3/343 , H03F1/0261 , H03F1/302 , H03F2200/18 , H03F2200/453 , H03F2200/513
摘要： A constant current bias approach that receives an input bias voltage and maintains a temperature independent constant current bias in a linear amplifier device. Integrated sense circuitry protects against unacceptable input voltages to guarantee bias stability. Fabrication in multiple semiconductor technologies and assembly into a single package allows for optimum cost and performance of DC bias and RF amplifier sections.
摘要翻译：恒定电流偏置方法，其接收输入偏置电压并且在线性放大器装置中保持与温度无关的恒定电流偏置。集成感测电路可防止不可接受的输入电压，以保证偏置稳定性。多个半导体技术的制造和组装成单个封装允许DC偏置和RF放大器部分的最佳成本和性能。

6. 发明申请

US20080001670A1 Circuit for accurately controlling power amplifier output power 有权
公开(公告)号：US20080001670A1
公开(公告)日：2008-01-03
申请号：US11899925
申请日：2007-09-07
申请人： David Ripley
发明人： David Ripley
IPC分类号： H03G3/10 , H03F3/45
CPC分类号： H03F1/0216 , H03F2200/426 , H03F2200/462 , H03F2200/471 , H03F2200/474 , H03G3/004
摘要： According to an exemplary embodiment, an amplification module includes a power control circuit. The amplification module further includes a power amplifier coupled to the power control circuit and configured to draw a supply current and receive a supply voltage from the power control circuit. The power control circuit is configured to control a DC power provided to the power amplifier by controlling a product of a sense current, which is a mirror current of the supply current, and the supply voltage. The power control circuit includes a feedback voltage that corresponds to the product of the sense current and the supply voltage. The power control circuit further includes an analog multiplier circuit configured to receive the sense current and the supply voltage and generate the feedback voltage. The power control circuit further includes a differential error amplifier configured to compare the feedback voltage to a control voltage.

7. 发明授权

US07196722B2 Multiple camera video system which displays selected images 有权
标题翻译：多个摄像机视频系统显示所选图像
公开(公告)号：US07196722B2
公开(公告)日：2007-03-27
申请号：US09860962
申请日：2001-05-18
申请人： Patrick White , Brian Hunt , G. David Ripley
发明人： Patrick White , Brian Hunt , G. David Ripley
IPC分类号： H04N5/232 , H04N5/225
CPC分类号： H04N21/23406 , G11B27/034 , H04N5/23203 , H04N5/23206 , H04N7/17318 , H04N7/181 , H04N21/2187 , H04N21/234345 , H04N21/234354 , H04N21/23439 , H04N21/4312 , H04N21/4314 , H04N21/6125 , H04N21/6373 , H04N21/8126 , H04N21/84
摘要： Multiple streams of data are streamed to a user's terminal with images from different cameras. Low resolution thumbnail images tell the user what image streams are available. A focus stream provides high resolution images from a selected camera. A user can switch the focus stream to another stream by clicking on the associated thumbnail. The users can also be provided with a thumbnail of panoramic image. Other data streams sent to the user can contain (a) audio data, (b) interactivity markup data which describes regions of the image which provide interactivity opportunities such as hotspots, (c) presentation markup data which defines how data is presented on the user's screen, (d) a telemetry data stream which can be used for various statistical data. One data stream contains a low quality base image for each data stream which can be enhanced to form a high resolution focus image.
摘要翻译：使用来自不同相机的图像将多个数据流流式传输到用户的终端。低分辨率缩略图告诉用户什么图像流可用。焦点流提供来自所选相机的高分辨率图像。用户可以通过点击关联的缩略图将焦点流切换到另一个流。还可以向用户提供全景图像的缩略图。发送给用户的其他数据流可以包含（a）音频数据，（b）描述提供诸如热点之类交互机会的图像区域的交互性标记数据，（c）表示标记数据，其定义如何在用户的屏幕，（d）可以用于各种统计数据的遥测数据流。一个数据流包含每个数据流的低质量基本图像，其可被增强以形成高分辨率聚焦图像。

8. 发明申请

US20070001766A1 Automatic bias control circuit for linear power amplifiers 有权
标题翻译：线性功率放大器的自动偏置控制电路
公开(公告)号：US20070001766A1
公开(公告)日：2007-01-04
申请号：US11172490
申请日：2005-06-29
申请人： David Ripley , Paul Andrys , Keith Nellis
发明人： David Ripley , Paul Andrys , Keith Nellis
IPC分类号： H03G3/10
CPC分类号： H03F1/0261 , H03F1/0272 , H03F1/30 , H03F1/32 , H03F2200/435 , H03F2200/78 , H03F2200/99
摘要： According to an exemplary embodiment, an amplification module includes a power amplifier configured to receive an RF input signal and provide an RF output signal. The amplification module further includes an autobias control circuit configured to receive and convert the RF output signal to a control signal. The control signal can cause the power amplifier to have a quiescent current that increases substantially linearly in response to an increase in the RF output power of the RF output signal. The autobias control circuit can include a peak detector/log converter circuit coupled to a first input of a differential amplifier, where the differential amplifier outputs the control signal. The autobias control circuit can further include a DC reference circuit coupled to a second input of the differential amplifier. The amplification module further includes an analog bias circuit coupling the control voltage to a bias input of said power amplifier.
摘要翻译：根据示例性实施例，放大模块包括被配置为接收RF输入信号并提供RF输出信号的功率放大器。该放大模块还包括一个自动分度控制电路，其被配置为接收并将RF输出信号转换为控制信号。控制信号可以使得功率放大器具有响应于RF输出信号的RF输出功率的增加而基本线性地增加的静态电流。自动偏置控制电路可以包括耦合到差分放大器的第一输入的峰值检测器/对数转换器电路，其中差分放大器输出控制信号。自动比例控制电路还可以包括耦合到差分放大器的第二输入的DC参考电路。放大模块还包括将控制电压耦合到所述功率放大器的偏置输入的模拟偏置电路。

9. 发明授权

US06337683B1 Panoramic movies which simulate movement through multidimensional space 有权
标题翻译：通过多维空间模拟运动的全景电影
公开(公告)号：US06337683B1
公开(公告)日：2002-01-08
申请号：US09310715
申请日：1999-05-12
申请人： Scott Gilbert , David J. Kaiman , Michael C. Park , G. David Ripley
发明人： Scott Gilbert , David J. Kaiman , Michael C. Park , G. David Ripley
IPC分类号： G06T100
CPC分类号： H04N5/2628 , H04N5/23238 , H04N5/77 , H04N5/775 , H04N9/8047 , H04N9/8063 , H04N9/8205
摘要： Movement through multi-dimensional space is simulated using a series of panoramic images which are projected or displayed in sequence. The user's direction of view, that is the selected view window, is maintained as the series of images is projected or displayed. Motion in directions other than forward or reverse is simulated by utilizing “branch” points in the sequence. Each path from a branch point simulates motion in a different direction. Branch points are generally indicated to a viewer by visual indicators called “hot spots”; however, branch points may also be hidden and activated in response to the viewer's selected direction of view. If a branch point is indicated by a visual indicator, a user can select motion in a desired direction by clicking on a “hot spot”. In order to conserve storage space, the image representing each panorama can be stored in a compressed format. Only the portion of the panorama necessary to create a “view window” that is, the portion of the image displayed in response to the user's direction of view, is decompressed at view time. An index methodology is used to store the panoramic images. Use of the indexing methodology allows the images to be retrieved in both the forward and backward direction to simulate movement in either direction. Sound is provided in a special format, so that special effects can be provided based on the user's point of view and dependent upon the direction of motion selected by the user.
摘要翻译：通过多维空间的运动是使用一系列全景图像进行模拟的，这些全景图像被依次投射或显示。当投影或显示一系列图像时，维护用户的观看方向，即所选视图窗口。通过利用序列中的“分支”点来模拟正向或反向以外的方向的运动。来自分支点的每个路径模拟不同方向的运动。分支点通常被称为“热点”的视觉指示给观察者; 然而，分支点也可以响应于观众的所选择的观看方向被隐藏和激活。如果通过视觉指示器指示分支点，则用户可以通过点击“热点”来选择所需方向的运动。为了节省存储空间，表示每个全景的图像可以以压缩格式存储。只有创建“视窗”所必需的部分全景图像，就是在视图时解压缩响应于用户观看方向显示的图像部分。索引方法用于存储全景图像。使用索引方法允许在向前和向后方向上检索图像以模拟任一方向上的移动。以特殊格式提供声音，使得可以基于用户的观点并且取决于用户选择的运动方向来提供特殊效果。

10. 发明申请

US20060119425A1 Voltage clamp for improved transient performance of a collector voltage controlled power amplifier 有权
公开(公告)号：US20060119425A1
公开(公告)日：2006-06-08
申请号：US11006233
申请日：2004-12-06
申请人： Kerry Phillips , David Ripley , Robert Fisher
发明人： Kerry Phillips , David Ripley , Robert Fisher
IPC分类号： H03F1/14 , H03G3/20
CPC分类号： H03F1/0227 , H03F1/0244 , H03F1/34 , H03F2200/504 , H03G3/004 , H03G3/3047
摘要： A power control circuit for a power amplifier comprises a voltage regulator having a first input configured to receive a envelope control signal, a second input configured to receive a feedback signal, and a third input configured to receive a voltage clamp signal; and a clamp voltage reference circuit configured to generate the voltage clamp signal.

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