Frequency agile exciter
    1.
    发明申请
    Frequency agile exciter 有权
    频率敏捷激励器

    公开(公告)号:US20050085194A1

    公开(公告)日:2005-04-21

    申请号:US10689296

    申请日:2003-10-20

    CPC classification number: H03M3/50 H03M7/3017 H03M7/3024

    Abstract: Systems and methods are provided for providing high dynamic range operation over a variable range of frequencies. A delta-sigma modulator, having associated frequency characteristics, produces a digital output signal. A digital-to-analog converter converts the digital output signal into an analog signal. A clock circuit provides a clock signal to the delta-sigma modulator and the digital-to-analog converter. A frequency control controls one or more of the clock circuit, the delta-sigma modulator, and the digital-to-analog converter to alter the frequency characteristics of the delta-sigma modulator. A filter circuit can provide one or more passbands to one or more downstream amplifiers ensuring that out of band quantization noise is removed before amplification.

    Abstract translation: 提供了用于在可变频率范围内提供高动态范围操作的系统和方法。 具有相关频率特性的Δ-Σ调制器产生数字输出信号。 数模转换器将数字输出信号转换为模拟信号。 时钟电路向Δ-Σ调制器和数模转换器提供时钟信号。 频率控制控制时钟电路,Δ-Σ调制器和数 - 模转换器中的一个或多个以改变Δ-Σ调制器的频率特性。 滤波器电路可以向一个或多个下游放大器提供一个或多个通带,确保在放大之前去除带外量化噪声。

    Ergonomic Sensor Pad with Feedback to User and Method of Use
    3.
    发明申请
    Ergonomic Sensor Pad with Feedback to User and Method of Use 审中-公开
    符合人体工程学的传感器垫,具有反馈给用户和使用方法

    公开(公告)号:US20110275939A1

    公开(公告)日:2011-11-10

    申请号:US13074482

    申请日:2011-03-29

    CPC classification number: G09B19/003 A47C31/126 A61B5/4561

    Abstract: A portable system is provided for sensing and training a user to maintain correct posture while seated in a chair with a seat portion and a back portion. The system includes a first pad attachable to the seat portion of a chair, said first pad having a front area and a rear area, and a second pad attachable to the back portion of a chair and having a lower area and an upper area. There is a first sensor located in the first pad capable of sensing that a user is seated in the seat portion of the chair, a second sensor located in the first pad capable of sensing whether the lower posterior portion of the user's body is in contact with the rear area of the first pad, a third sensor operably attached to the lower area of the second pad capable of sensing whether the user's lumbar region is in contact with the second pad, a fourth sensor operably attached to the upper area of the second pad capable of sensing the distance between the user's upper back and the upper area of the second pad and a neck-position sensor operably attached to the second pad and capable of sensing the distance between the neck-position sensor and the user's neck. The system also includes a microprocessor operably connected to the first sensor, second sensor, third sensor, fourth sensor and neck-position sensor and capable of collecting data from each of the first sensor, second sensor, third sensor, fourth sensor and neck position sensor. The system also includes software for a personal computer, which configures the personal computer to receive the data from the microprocessor and to display the data received from the microprocessor, so that the user can utilize the ergonomic seat pad to receive feedback regarding his posture and over time, improve his posture.

    Abstract translation: 提供了一种便携式系统,用于感测和训练使用者,以便在坐在具有座椅部分和后部的椅子上时保持正确的姿势。 该系统包括可附接到椅子的座椅部分的第一垫,所述第一垫具有前区域和后区域,以及可附接到椅子的后部并具有较低区域和上部区域的第二垫。 位于第一垫中的第一传感器能够感测到使用者坐在椅子的座椅部分中,位于第一垫中的第二传感器能够检测使用者身体的下后部是否与 所述第一垫的后部区域,第三传感器,其可操作地附接到所述第二垫的下部区域,其能够感测所述使用者的腰部区域是否与所述第二垫接触;第四传感器,可操作地附接到所述第二垫的上部区域 能够检测使用者的上背部与第二衬垫的上部区域之间的距离,以及颈部位置传感器,其可操作地附接到第二衬垫并且能够感测颈部位置传感器和使用者颈部之间的距离。 该系统还包括可操作地连接到第一传感器,第二传感器,第三传感器,第四传感器和颈部位置传感器的微处理器,并且能够从第一传感器,第二传感器,第三传感器,第四传感器和颈部位置传感器 。 该系统还包括用于个人计算机的软件,其配置个人计算机以从微处理器接收数据并显示从微处理器接收的数据,使得用户可以利用符合人体工程学的座垫来接收关于他的姿势和结束的反馈 时间,提高他的姿态。

    Multi-mode amplifier system
    4.
    发明授权
    Multi-mode amplifier system 有权
    多模放大器系统

    公开(公告)号:US07043213B2

    公开(公告)日:2006-05-09

    申请号:US10603880

    申请日:2003-06-24

    CPC classification number: H03F1/0222 H03F1/025 H03F1/3241 H03F2200/331

    Abstract: An amplifier system is provided that switches between a linear mode of operation, an envelope tracking mode of operation and a polar mode of operation. The amplifier system switches between modes of operation based upon a characteristic of an input signal relative to a first threshold level and a second threshold level. A mode selector selects the operation mode by transmitting an amplitude modulated signal plus a variable headroom voltage to a supply terminal of a power amplifier during the envelope tracking mode, an amplitude modulated signal to the supply terminal and phase modulated input signal during the polar mode and a substantially constant amplitude signal to the supply terminal during the linear mode.

    Abstract translation: 提供放大器系统,其在线性操作模式,包络跟踪操作模式和极操作模式之间切换。 放大器系统基于输入信号相对于第一阈值电平和第二阈值电平的特性来切换操作模式。 模式选择器通过在包络跟踪模式期间向功率放大器的电源端发送幅度调制信号加可变净空电压,在极坐标模式期间向供电端发送调幅信号和相位调制输入信号,从而选择操作模式,以及 在线性模式期间向供电端子施加基本恒定的振幅信号。

    Switching amplifier architecture
    5.
    发明申请
    Switching amplifier architecture 有权
    开关放大器架构

    公开(公告)号:US20050088226A1

    公开(公告)日:2005-04-28

    申请号:US10691987

    申请日:2003-10-23

    CPC classification number: H03F3/217 H03F1/0227 H03F1/0288 H03F2200/331

    Abstract: A supply voltage and/or bias of a switching amplifier is modified based on at least one characteristic of the input signal relative to a threshold level. A binary waveform converter converts the input signal into a binary waveform for inputting into the switching amplifier. The switching amplifier amplifies the input signal, while the supply voltage and/or bias is modified in response to changes of the at least one characteristic of the input signal.

    Abstract translation: 基于相对于阈值电平的输入信号的至少一个特性来修改开关放大器的电源电压和/或偏置。 二进制波形转换器将输入信号转换成用于输入到开关放大器的二进制波形。 开关放大器放大输入信号,同时响应于输入信号的至少一个特性的变化来修改电源电压和/或偏置。

    Multi-mode multi-amplifier architecture
    6.
    发明授权
    Multi-mode multi-amplifier architecture 失效
    多模多放大器架构

    公开(公告)号:US06853244B2

    公开(公告)日:2005-02-08

    申请号:US10603682

    申请日:2003-06-24

    Abstract: An amplification architecture or system is provided having a multiple amplifier system that switches modes of operation between operation in a component mode and a composite mode based on a characteristic of an input signal relative to a threshold level. In the component mode, the components of the input signal are employed to different terminals of the multiple amplifier system that provide a reconstructed amplified representation of the input signal. In the composite mode, the input signal is amplified to provide an amplified representation of the input signal.

    Abstract translation: 提供具有多放大器系统的放大架构或系统,该多放大器系统基于相对于阈值电平的输入信号的特性,在分量模式中的操作和复合模式之间切换操作模式。 在分量模式中,输入信号的分量被用于提供输入信号的重构放大表示的多放大器系统的不同端子。 在复合模式中,输入信号被放大以提供输入信号的放大表示。

    Ergonomic sensor pad with feedback to user and method of use
    8.
    发明授权
    Ergonomic sensor pad with feedback to user and method of use 有权
    符合人体工程学的传感器垫,具有反馈给用户和使用方法

    公开(公告)号:US09196175B2

    公开(公告)日:2015-11-24

    申请号:US13074482

    申请日:2011-03-29

    CPC classification number: G09B19/003 A47C31/126 A61B5/4561

    Abstract: A portable system is provided for sensing and training a user to maintain correct posture while seated in a chair with a seat portion and a back portion. The system includes a first pad attachable to the seat portion of a chair, said first pad having a front area and a rear area, and a second pad attachable to the back portion of a chair and having a lower area and an upper area. There is a first sensor located in the first pad capable of sensing that a user is seated in the seat portion of the chair, a second sensor located in the first pad capable of sensing whether the lower posterior portion of the user's body is in contact with the rear area of the first pad, a third sensor operably attached to the lower area of the second pad capable of sensing whether the user's lumbar region is in contact with the second pad, a fourth sensor operably attached to the upper area of the second pad capable of sensing the distance between the user's upper back and the upper area of the second pad and a neck-position sensor operably attached to the second pad and capable of sensing the distance between the neck-position sensor and the user's neck. The system also includes a microprocessor operably connected to the first sensor, second sensor, third sensor, fourth sensor and neck-position sensor and capable of collecting data from each of the first sensor, second sensor, third sensor, fourth sensor and neck position sensor. The system also includes software for a personal computer, which configures the personal computer to receive the data from the microprocessor and to display the data received from the microprocessor, so that the user can utilize the ergonomic seat pad to receive feedback regarding his posture and over time, improve his posture.

    Abstract translation: 提供了一种便携式系统,用于感测和训练使用者,以便在坐在具有座椅部分和后部的椅子上时保持正确的姿势。 该系统包括可附接到椅子的座椅部分的第一垫,所述第一垫具有前区域和后区域,以及可附接到椅子的后部并具有较低区域和上部区域的第二垫。 位于第一垫中的第一传感器能够感测到使用者坐在椅子的座椅部分中,位于第一垫中的第二传感器能够检测使用者身体的下后部是否与 所述第一垫的后部区域,第三传感器,其可操作地附接到所述第二垫的下部区域,其能够感测所述使用者的腰部区域是否与所述第二垫接触;第四传感器,可操作地附接到所述第二垫的上部区域 能够检测使用者的上背部与第二衬垫的上部区域之间的距离,以及颈部位置传感器,其可操作地附接到第二衬垫并且能够感测颈部位置传感器和使用者颈部之间的距离。 该系统还包括可操作地连接到第一传感器,第二传感器,第三传感器,第四传感器和颈部位置传感器的微处理器,并且能够从第一传感器,第二传感器,第三传感器,第四传感器和颈部位置传感器 。 该系统还包括用于个人计算机的软件,其配置个人计算机以从微处理器接收数据并显示从微处理器接收的数据,使得用户可以利用符合人体工程学的座垫来接收关于他的姿势和结束的反馈 时间,提高他的姿态。

    Communication system and method for improving efficiency and linearity
    9.
    发明授权
    Communication system and method for improving efficiency and linearity 有权
    提高效率和线性度的通信系统和方法

    公开(公告)号:US07580476B2

    公开(公告)日:2009-08-25

    申请号:US10606721

    申请日:2003-06-26

    CPC classification number: H04L27/366 H04L1/08 H04L27/2614

    Abstract: A communication system and method is provided that modifies a signal for transmission at a transmitter to reduce peaks associated with the signal. The signal can be modified employing signal shaping, signal clipping, signal decomposition or other techniques to remove peaks associated with the signal. The communication system can also correct the modified signal at a receiver to reconstruct the originally wanted signal.

    Abstract translation: 提供了一种通信系统和方法,其修改用于在发射机发射的信号以减少与该信号相关联的峰值。 可以使用信号整形,信号削波,信号分解或其它技术来修改信号以消除与信号相关联的峰值。 通信系统还可以在接收机处校正修改的信号,以重建原本想要的信号。

    Polar and linear amplifier system
    10.
    发明授权
    Polar and linear amplifier system 有权
    极性和线性放大器系统

    公开(公告)号:US06987417B2

    公开(公告)日:2006-01-17

    申请号:US10606093

    申请日:2003-06-24

    Abstract: An amplifier system is provided that switches between operation in a polar mode and a linear mode based on a characteristic of an input signal relative to a threshold level. The system operates as a polar amplifier in the polar mode, and as a linear amplifier in the linear mode. A mode selector controls whether polar components of the input signal are sent to a power amplifier or whether a composite signal is amplified.

    Abstract translation: 提供一种放大器系统,其基于相对于阈值电平的输入信号的特性,在极坐标模式和线性模式的操作之间进行切换。 该系统在极坐标模式下作为极性放大器工作,并以线性模式作为线性放大器工作。 模式选择器控制输入信号的极性分量是发送到功率放大器还是复合信号被放大。

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