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    • 1. 发明授权
    • Transmitter with self-test capability
    • 具有自检功能的变送器
    • US08331880B2
    • 2012-12-11
    • US12759365
    • 2010-04-13
    • Nicolas Sornin
    • Nicolas Sornin
    • H04B17/00H04B1/04
    • H04B17/0085H04B17/18H04B17/19
    • A radio transmitter includes a transmitter circuit having a transmission output and being configured to generate at the transmission output a signal for transmission; a reference voltage circuit configured to generate a substantially temperature-invariant reference voltage; a reference signal circuit having a reference output and being configured to receive the substantially temperature-invariant voltage generated by the reference voltage circuit and to generate at the reference output an oscillating reference signal of an amplitude that is derived from the temperature-invariant reference voltage; an amplitude sensor having an input and being configured for sensing the amplitude of a signal at the input and generating a sensed amplitude signal indicative of the sensed amplitude; and control apparatus configured to control the radio transmitter to operate in each of: a) a first mode in which it causes the input of the amplitude sensor to be coupled to the reference output; and b) a second mode in which it causes the input of the amplitude sensor to be coupled to the transmission output.
    • 无线电发射机包括具有传输输出并被配置为在传输输出处产生用于传输的信号的发射机电路; 参考电压电路,被配置为产生基本上温度不变的参考电压; 具有参考输出并被配置为接收由参考电压电路产生的基本上温度不变的电压并且在参考输出处产生由温度不变参考电压导出的振幅的振荡参考信号的参考信号电路; 振幅传感器,其具有输入并且被配置为用于感测所述输入处的信号的幅度,并产生指示所感测的幅度的感测到的幅度信号; 以及控制装置,被配置为控制所述无线电发射机在以下各项中的操作:a)第一模式,其中使所述振幅传感器的输入耦合到所述参考输出; 以及b)第二模式,其中使得振幅传感器的输入耦合到变速器输出。
    • 3. 发明授权
    • Mixing waveforms
    • 混合波形
    • US08207793B2
    • 2012-06-26
    • US12865123
    • 2009-01-02
    • Timothy John Newton
    • Timothy John Newton
    • H03B21/00H03K4/02H04L27/00H04B1/40
    • H03K23/68H03K4/026H04B15/02H04L27/0014H04L2027/0016
    • A local oscillator circuit for a signal transmitter or receiver, the circuit comprising: an input for receiving a master oscillating signal from a master oscillator; and signal processing circuitry configured to be clocked by the master oscillating signal to generate a local oscillator signal, the signal processing circuitry being such that the local oscillator signal has substantially no harmonic content at any integer multiple of the frequency of the master oscillator signal, which oscillates at (2n+1)/2 times the frequency of the generated local oscillator signal, with n being a positive integer.
    • 一种用于信号发射器或接收器的本地振荡器电路,该电路包括:用于从主振荡器接收主振荡信号的输入端; 以及信号处理电路,其被配置为由主振荡信号计时以产生本地振荡器信号,所述信号处理电路使得本地振荡器信号在主振荡器信号的频率的任何整数倍处基本上没有谐波含量,其中 在产生的本地振荡器信号的频率(2n + 1)/ 2倍振荡,其中n为正整数。
    • 4. 发明授权
    • Signal pitch period estimation
    • 信号音调周期估计
    • US08185384B2
    • 2012-05-22
    • US12427004
    • 2009-04-21
    • Xuejing SunSameer Gadre
    • Xuejing SunSameer Gadre
    • G10L11/04G10L13/00
    • G10L25/90G10H2210/066G10L19/005
    • A method and apparatus for estimating the pitch period of a signal. The method includes identifying a first candidate pitch period by performing a search only over a first range of potential pitch periods. The method further includes determining a second candidate pitch period by dividing the first candidate pitch period by an integer, wherein the second candidate pitch period is outside the first range of potential pitch periods. The method further includes selecting as the estimate of the pitch period of the signal the smaller of the candidate pitch periods that is such that portions of the signal separated by that candidate pitch period are well correlated.
    • 一种用于估计信号的音调周期的方法和装置。 该方法包括仅在潜在音调周期的第一范围上执行搜索来识别第一候选音调周期。 该方法还包括通过将第一候选音调周期除以整数来确定第二候选音调周期,其中第二候选音调周期在潜在音调周期的第一范围之外。 所述方法还包括选择所述信号的音调周期的估计值,所述候选音调周期中较小的那些,使得由所述候选音调周期分离的信号的部分良好地相关。
    • 5. 发明授权
    • High efficiency amplification
    • 高效放大
    • US08169261B2
    • 2012-05-01
    • US12360727
    • 2009-01-27
    • Martin Paul Wilson
    • Martin Paul Wilson
    • H03F1/00
    • H03F1/0222H03F1/00H03F1/02H03F1/025H03F3/189H03F3/19H03F3/21H03F3/245H03F2200/102H03F2200/331H03F2200/451H03F2200/504H03F2200/511
    • A radio frequency amplification stage comprising: an amplifier for receiving an input signal to be amplified and a power supply voltage; and a power supply voltage stage for supplying said power supply voltage, comprising: means for providing a reference signal representing the envelope of the input signal; means for selecting one of a plurality of supply voltage levels in dependence on the reference signal; and means for generating an adjusted selected power supply voltage, comprising an ac amplifier for amplifying a difference between the reference signal and one of the selected supply voltage level or the adjusted selected supply voltage level, and a summer for summing the amplified difference with the selected supply voltage to thereby generate the adjusted supply voltage.
    • 一种射频放大级,包括:放大器,用于接收待放大的输入信号和电源电压; 以及用于提供所述电源电压的电源电压级,包括:用于提供表示所述输入信号的包络的参考信号的装置; 用于根据参考信号选择多个电源电压电平中的一个的装置; 以及用于产生经调整的所选择的电源电压的装置,包括用于放大参考信号与所选择的电源电压电平或所调整的所选电源电压电平之一之间的差的交流放大器,以及用于将放大的差与所选择的电源电压相加的加法器 供给电压,从而生成调整后的电源电压。
    • 7. 发明授权
    • Charge transfer in a phase-locked loop
    • 锁相环中的电荷转移
    • US08089307B2
    • 2012-01-03
    • US12918786
    • 2009-03-04
    • Pasquale LamannaNicolas Sornin
    • Pasquale LamannaNicolas Sornin
    • H03L7/06
    • H03L7/087H03L7/0891H03L7/191H03L7/1974
    • A phase-locked loop arranged to generate an output signal having a first frequency that is a static value times the frequency of a reference signal, the phase-locked loop comprising a signal generator arranged to generate the output signal, a divider arranged to receive the output signal and divide the output signal to form a feedback signal, the divider being arranged to vary the divisor by which the output signal is divided to cause the output signal to have a frequency that is said static value times the frequency of the reference signal, a comparison unit arranged to compare the feedback signal with the reference signal, one or more current generators arranged to output current pulses in dependence on said comparison, a summation unit arranged to receive the current pulses output by the current generator(s) and form a single current pulse therefrom and a loop filter arranged to filter the single current pulse to form a control signal for controlling the signal generator, the phase-locked loop being arranged such that the current generator(s) generate(s) a first current pulse dependent on a phase-difference between the feedback signal and the reference signal and a second current pulse whose magnitude and sign are dependent on an error in the feedback signal that is caused by the variation of the divisor, and the summation unit receives the first and second current pulses and stores an electrical charge representative of those current pulses and the summation unit outputs a single current pulse dependent on the electrical charge stored by the summation unit, said single current pulse being representative of a phase-difference that would have existed between the reference signal and the feedback signal if the feedback signal had been formed by dividing the output signal by said static value and not by the varied divisor.
    • 一种锁相环,被布置为产生具有作为静态值的第一频率乘以参考信号的频率的输出信号,所述锁相环包括布置成产生输出信号的信号发生器, 输出信号并分频输出信号以形成反馈信号,所述分频器被布置成改变所述输出信号被分频的除数,使得输出信号具有所述静态值的频率乘以参考信号的频率, 比较单元,其被布置为将反馈信号与参考信号进行比较,一个或多个电流发生器被布置为根据所述比较输出电流脉冲;一个求和单元,被布置成接收由电流发生器输出的电流脉冲并形成 单电流脉冲和环路滤波器被布置为滤波单电流脉冲以形成用于控制信号发生器的控制信号, 锁定环被布置成使得电流发生器产生取决于反馈信号和参考信号之间的相位差的第一电流脉冲,以及第二电流脉冲,其幅度和符号取决于 由除数的变化引起的反馈信号,并且求和单元接收第一和第二电流脉冲并存储代表那些电流脉冲的电荷,并且求和单元输出单个电流脉冲,这取决于由 如果反馈信号是通过将输出信号除以所述静态值而不是通过变数除数形成的,则所述单电流脉冲表示将存在于参考信号和反馈信号之间的相位差。
    • 9. 发明授权
    • Multifunctional periodic cellular solids and the method of making same
    • 多功能周期细胞固体及其制备方法
    • US07963085B2
    • 2011-06-21
    • US10479833
    • 2002-06-06
    • David J. SypeckHaydn N. G. Wadley
    • David J. SypeckHaydn N. G. Wadley
    • E04C5/00
    • B29D24/00E04C2/3405E04C2002/3422E04C2002/3488Y10T428/24174Y10T428/24314
    • Methods of making truss-based periodic cellular solids that have improved structural properties and multifunctional design. Many materials (metals, ceramics, glasses, polymers, composites and even semiconductors) can be shaped into cellular, truss-like architectures with open, closed or mixed types of porosity and then very uniformly arranged in controlled, three-dimensional space-filling arrays. The truss-like elements do not necessarily have a constant cross-section, nor are they necessarily straight or solid throughout (they could be hollow). Their cross sections can be circular, square, triangular, I-beam or other shapes of interest depending on multifunctional needs. When bonded together by solid state, liquid phase, pressing or other methods at points of contact, a cellular structure of highly repeatable cell geometry and few imperfections results. The bonds hold the truss elements together in a desired configuration, allow load to be efficiently transferred amongst them and make the resulting structure significantly more rigid when bent, compressed or sheared. These constructed cellular solids offer a broad range of multifunctional structural uses with a tremendous freedom for choosing the truss type, orientation and distribution. Multiple materials can be intermixed.
    • 制备具有改进的结构特性和多功能设计的基于桁架的周期性细胞固体的方法。 许多材料(金属,陶瓷,玻璃,聚合物,复合材料,甚至半导体)可以被形成具有开放,封闭或混合类型的孔隙的细胞,桁架状结构,然后非常均匀地布置在受控的三维空间填充阵列 。 桁架元件不一定具有恒定的横截面,也不一定是直的或整体的(它们可以是中空的)。 根据多功能需要,它们的截面可以是圆形,正方形,三角形,工字梁或其他感兴趣的形状。 当通过固态,液相,压制或其他方法在接触点处结合在一起时,可以获得高度可重复的细胞几何形状的细胞结构和很少的缺陷。 这些键将桁架元件以期望的构型保持在一起,允许负载在它们之间有效地传递,并且当弯曲,压缩或剪切时使得所得到的结构显着更加刚性。 这些构造的细胞固体提供广泛的多功能结构用途,具有选择桁架类型,取向和分布的巨大自由度。 可以混合多种材料。
    • 10. 发明授权
    • Detecting device usage
    • 检测设备使用情况
    • US07961172B2
    • 2011-06-14
    • US10620811
    • 2003-07-17
    • Alistair Edwin May
    • Alistair Edwin May
    • G09G5/00
    • G06F3/03543G06F1/3203G06F1/3259G06F3/0231G06F3/0383Y02D10/155
    • A radio-capable device, comprising: a data collection unit for collecting data, and having a normal operating mode in which it is enabled for collecting data and a low-power mode; a radio communication unit for transmitting over a radio channel data collected by the data collection unit; and a radio channel sensor coupled to the radio unit for sensing at least one physical characteristic of the radio channel, and arranged to cause the data collection unit to enter the normal operating mode if the physical characteristic meets a pre-set threshold.
    • 一种无线电设备,包括:数据收集单元,用于收集数据,并具有正常操作模式,其中能够收集数据和低功率模式; 无线电通信单元,用于通过无线电信道发送由数据收集单元收集的数据; 以及无线电信道传感器,其耦合到所述无线电单元,用于感测所述无线电信道的至少一个物理特性,并且被布置为如果所述物理特性满足预定阈值,则使所述数据收集单元进入正常操作模式。