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    • 2. 发明申请
    • METHOD AND DEVICE FOR CLOCK SYNCHRONISATION WITH A VESTIGIAL-SIDEBAND-MODULATED TRANSMITTED SIGNAL
    • 用于时域同步传输信号的方法和装置
    • US20070222495A2
    • 2007-09-27
    • US11302320
    • 2005-12-13
    • Jochen PliquettThomas Reichert
    • Jochen PliquettThomas Reichert
    • H03D1/24G06G7/25
    • H04L7/027H04L7/007
    • A method for clock synchronisation between an amplitude-modulated or phase-modulated received signal (r(t)) and a transmitted signal (s(t)) estimates the timing offset (ε) between the received signal (r(t)) and the transmitted signal (s(t)) by means of a maximum-likelihood method. The maximum-likelihood method in this context is realised by an estimation filtering (S40; S140) dependent upon the transmission characteristic, a subsequent nonlinear signal-processing function (S50; S150) and an averaging filtering (S60, S100; S180, S200) The received signal (r(t)) is especially a modified vestigial-sideband-modulated received signal (rVSB′(t)). The nonlinear signal-processing function (S50; S150) maintains the alternating component in the spectrum of the pre-filtered vestigial-sideband-modulated received signal (vVSB′(t)).
    • 在幅度调制或相位调制接收信号(r(t))和发送信号(s(t))之间的时钟同步的方法估计接收信号(r(t))和 通过最大似然法发射信号(s(t))。 在上下文中的最大似然法通过依赖于传输特性的估计滤波(S40; S140),随后的非线性信号处理功能(S50; S150)和平均滤波(S60,S100; S180,S200)来实现, 所接收的信号(r(t))特别是经修改的残留边带调制接收信号(r“VSB”(t))。 非线性信号处理功能(S50; S150)维持预滤波的残留边带调制接收信号(v> VSB“(t))的频谱中的交替分量。
    • 4. 发明授权
    • Full wave rectifier using current mirror bridge
    • 全波整流器采用电流镜桥
    • US5477171A
    • 1995-12-19
    • US271043
    • 1994-07-06
    • Paolo MenegoliMark E. Rohrbaugh
    • Paolo MenegoliMark E. Rohrbaugh
    • G05F3/26G01R19/22H02M7/21H02M7/217H03K5/22G06G7/25
    • G01R19/22H02M7/217
    • A full wave rectifier includes an amplifier having a minus input, a plus input and an amplifier output; an input resistor connected between a circuit input and the minus input; and a current bridge having an output terminal connected to the circuit output, a first terminal connected to the minus input and a second terminal connected to the amplifier output. The current bridge includes a first current mirror circuit and a second current mirror circuit. The first current mirror circuit includes a first current source and a second current source, a source end of each current source of the first and second current sources being connected to the first terminal, a drain end of the first current source being connected to the second terminal and a drain end of the second current source being connected to the output terminal. The second current mirror circuit includes a third current source and fourth current source, a source end of each current source of the third and fourth current sources being connected to the second terminal, a drain end of the third current source being connected to the first terminal and a drain end of the fourth current source being connected to the output terminal.
    • 全波整流器包括具有负输入,正输入和放大器输出的放大器; 连接在电路输入和负输入之间的输入电阻; 以及具有连接到电路输出的输出端的电流桥,连接到负输入的第一端和连接到放大器输出的第二端。 电流桥包括第一电流镜电路和第二电流镜电路。 第一电流镜电路包括第一电流源和第二电流源,第一和第二电流源的每个电流源的源极端连接到第一端子,第一电流源的漏极端连接到第二电流源 端子和第二电流源的漏极端连接到输出端子。 第二电流镜电路包括第三电流源和第四电流源,第三和第四电流源的每个电流源的源极端连接到第二端子,第三电流源的漏极端连接到第一端子 并且第四电流源的漏极端连接到输出端子。
    • 6. 发明授权
    • Accurate high speed absolute value circuit and method
    • 精确的高速绝对值电路及方法
    • US4461961A
    • 1984-07-24
    • US322900
    • 1981-11-19
    • Larry J. Kendall
    • Larry J. Kendall
    • G01R19/22G06G7/25H03K5/00
    • G06G7/25G01R19/22
    • The absolute value circuit of the invention comprises differential voltage to current converter means for converting an input voltage of alternating polarity into a pair of currents whose difference represents the input voltage, first and second inverter means for separately inverting each of the two currents, means for connecting the output of each inverter to the input of the other, the inverters being of the type which will only invert current of a predetermined polarity, and current summer and clamp means which are supplied with the outputs of the inverters for generating a unipolar output current signal whose magnitude represents the difference of absolute values of the pair of currents.
    • 本发明的绝对值电路包括差分电压 - 电流转换器装置,用于将交替极性的输入电压转换为差异代表输入电压的一对电流;第一和第二反相器装置,用于分别反转两个电流中的每一个, 将每个逆变器的输出连接到另一个的输入,反相器的类型将仅反转预定极性的电流,以及电流加法器和钳位装置,其被提供有用于产生单极性输出电流的反相器的输出 信号,其幅度表示该对电流的绝对值的差。
    • 7. 发明授权
    • Integrator circuit
    • 集成电路
    • US3832536A
    • 1974-08-27
    • US29278172
    • 1972-09-27
    • CIT ALCATEL
    • LE DILY CLAJOTTE D
    • G06G7/18G06G7/186G06G7/25
    • G06G7/18G06G7/186G06G7/25
    • Integrator comprising an operational amplifier having an input (E1)(-) and an input (E2)(+), and an output (S), with a resistance having a value of (R1) connected up between the input (E2) and the earth, a capacitor shunted by a resistor having an ohmic value of (R2) between the output (S) and the ihput (E1), the input voltage being applied to the input (E1) through a resistor having a value of R1), characterized in that the output (S) is connected up to the input (E2) by a network comprising two diodes connected up head to tail in parallel, in series with a resistor having an ohmic value equal to (R2).
    • 积分器包括具有输入(E1)( - )和输入(E2)(+)的运算放大器和输出(S),其中电阻具有连接在输入(E2)和 地线,由输出(S)和输出(E1)之间的欧姆值(R2)的电阻器分流的电容器,输入电压通过具有值R1的电阻施加到输入端(E1) 其特征在于,输出(S)通过网络连接到输入端(E2),该网络包括并联连接的头二尾二极管,与欧姆值等于(R2)的电阻串联。
    • 10. 发明授权
    • Ac to dc converter circuit
    • 交直流转换器电路
    • US3760255A
    • 1973-09-18
    • US3760255D
    • 1972-02-25
    • GRODINSKY R
    • GRODINSKY R
    • G06G7/25H03G3/20H02MH03FH03K
    • H03G3/3005G06G7/25
    • An AC to DC converter for producing a varying DC signal proportional to the amplitude of the varying AC input signal, the converter including a pair of clamping circuits for providing output signals having DC components proportional to the AC amplitude of the AC input signal and AC components following the AC input signal, and where either the DC or the AC signal components of the outputs of the clamping circuits are of opposite sense while the other of same are of the same sense. Means are provided for combining the clamped signals so that the AC signal components are substantially cancelled and the DC signal components are added together.
    • 一种用于产生与变化的AC输入信号的幅度成比例的变化的DC信号的AC到DC转换器,所述转换器包括一对钳位电路,用于提供具有与AC输入信号的AC振幅成比例的DC分量的输出信号和AC分量 遵循AC输入信号,并且其中钳位电路的输出的DC或AC信号分量中的任一个具有相反的意义,而另一个具有相同的意义。 提供了用于组合被钳位的信号的装置,使得AC信号分量基本上被消除,并且将DC信号分量相加在一起。