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    • 2. 发明申请
    • Low power, up full swing voltage CMOS bus receiver
    • 低功耗,全高电压CMOS总线接收器
    • US20050077945A1
    • 2005-04-14
    • US10860522
    • 2004-06-03
    • Nathalie MessinaYves Leduc
    • Nathalie MessinaYves Leduc
    • G06F13/40H03B1/00H03K3/356H03L5/00
    • H03K3/356147G06F13/4072H03K3/356113Y02D10/14Y02D10/151
    • A CMOS bus receiver for converting a reduced voltage swing input signal at an input node to a higher voltage swing output signal at an output node. The receiver includes a first and a second MOS transistor connected in series by their source and drain between a first side and a second side of a power supply, a gate of the first MOS transistor being connected to the input node, the common connection node of the first and second MOS transistors being connected to the output node. A third and a fourth MOS transistor connected in series by their source and drain between the first side of the power supply and the input node are also provided, a gate of the third MOS transistor being connected to the output node, and a gate of the second MOS transistor being connected to the common connection node of the third and fourth MOS transistors. A fifth MOS transistor is provided, connected in series by a source and drain with a diode between the first side of the power supply and the input node, a gate of the fourth MOS transistor being connected to the common connection node of the fifth MOS transistor and the diode. An inverter has an input connected to the output node and an output connected to a gate of the fifth MOS transistor.
    • 一种CMOS总线接收器,用于将输入节点处的降低的电压摆幅输入信号转换为输出节点处的较高电压摆幅输出信号。 接收器包括通过其源极和漏极在电源的第一侧和第二侧串联连接的第一和第二MOS晶体管,第一MOS晶体管的栅极连接到输入节点,公共连接节点 第一和第二MOS晶体管连接到输出节点。 还提供了通过其电源的第一侧和输入节点之间的源极和漏极串联连接的第三和第四MOS晶体管,第三MOS晶体管的栅极连接到输出节点,并且栅极 第二MOS晶体管连接到第三和第四MOS晶体管的公共连接节点。 提供第五MOS晶体管,其通过源极和漏极串联连接在电源的第一侧和输入节点之间的二极管,第四MOS晶体管的栅极连接到第五MOS晶体管的公共连接节点 和二极管。 逆变器具有连接到输出节点的输入端和连接到第五MOS晶体管的栅极的输出端。
    • 5. 发明授权
    • Digital-analog converter for conversion of law A- encoded digital
signals into analog signals
    • 数字模拟转换器,用于将A编码的数字信号转换为模拟信号
    • US5021787A
    • 1991-06-04
    • US518375
    • 1990-05-03
    • Yves Leduc
    • Yves Leduc
    • H03M1/66H03M1/68H03M1/80
    • H03M1/664H03M1/68H03M1/804
    • Digital-analog converter intended to convert into analog signals digital signals formed of sign bits, of step bits and of segment bits, particularly signals coded by data compression according to law A, the said converter comprising a sign generator (4), intended to receive the sign bit of the said digital signal, a step generator (7), connected to the output of the sign generator and intended to receive the step bits of the said digital signal and to a segment generator (8) connected to the step generator and intended to receive the segment bits of the said digital signal, characterized in that the segment generator (8) is connected to the sign generator by means of the step generator (7) only.
    • 数字 - 模拟转换器旨在转换成模拟信号,由符号位,步进位和分段位组成的数字信号,特别是依据A的数据压缩编码的信号,所述转换器包括用于接收的符号发生器(4) 所述数字信号的符号位,步进发生器(7),连接到所述符号发生器的输出并且用于接收所述数字信号的步进位,并连接到与步进发生器连接的段发生器(8),以及 旨在接收所述数字信号的分段比特,其特征在于,段发生器(8)仅通过步进发生器(7)连接到符号发生器。
    • 7. 发明授权
    • Numerically controlled variable oscillator
    • 数控可变振荡器
    • US06400231B1
    • 2002-06-04
    • US09642481
    • 2000-08-18
    • Yves LeducPascal GuignonPierre Carbou
    • Yves LeducPascal GuignonPierre Carbou
    • H03B500
    • H03K3/0307H03B5/366H03J2200/10
    • An oscillator includes a resonator, such as a crystal (12) coupled to first and second capacitor banks (14). The first and second capacitor banks (14) each comprise a plurality of capacitors (16) coupled to the resonator (12) through respective switching devices (18) that may be selectively enabled. The switches (18) are selectively enabled to couple a desired set of said capacitors (16) to said resonator (12). At least one of the switches (18sd) is controlled with a clock signal having a programmable duty cycle from a sigma-delta modulator (20) to enable at least one of said capacitors (16sd) during a first phase of the clock signal and disable that capacitor (16sd) during a second phase of the clock signal.
    • 振荡器包括谐振器,例如耦合到第一和第二电容器组(14)的晶体(12)。 第一和第二电容器组(14)各自包括通过可以选择性地使能的各个开关装置(18)耦合到谐振器(12)的多个电容器(16)。 选择性地使开关(18)能够将期望的所述电容器组(16)耦合到所述谐振器(12)。 至少一个开关(18sd)由具有来自Σ-Δ调制器(20)的可编程占空比的时钟信号控制,以在时钟信号的第一阶段期间使能至少一个所述电容器(16sd),并且使能 该电容器(16sd)在时钟信号的第二阶段期间。
    • 9. 发明授权
    • Simple high resolution monolithic DAC for the tuning of an external VCXO
(voltage controlled quartz oscillator)
    • 用于调谐外部VCXO(压控石英振荡器)的简单高分辨率单片DAC
    • US5841386A
    • 1998-11-24
    • US786524
    • 1997-01-21
    • Yves Leduc
    • Yves Leduc
    • H03M3/02H03M7/32H03M7/36
    • H03M3/504
    • This invention relates to a high-resolution digital/analogue converter intended in particular for the tuning of a voltage-controlled quartz oscillator. This converter comprises a first second-order Sigma-Delta modulator (1) to the output of which is connected the input of a second Sigma-Delta modulator (9) producing a single bit at its output and a digital/analogue conversion circuit (13). The circuit of the converter furthermore comprises means for filtering the high-frequency components of the signal undergoing processing so as to obtain a quasi-stable D.C. voltage source with a high resolution. This invention is applicable to any voltage-controlled system having large inertia, and in particular, voltage-controlled quartz oscillators and transducers.
    • 本发明涉及特别用于调谐压控石英振荡器的高分辨率数字/模拟转换器。 该转换器包括第一二阶Σ-Δ调制器(1),其输出端连接第二Σ-Δ调制器(9)的输出端,在其输出端产生单个位,以及数字/模拟转换电路(13 )。 转换器的电路还包括用于对正在进行处理的信号的高频分量进行滤波以获得具有高分辨率的准稳态直流电压源的装置。 本发明适用于任何具有大惯性的电压控制系统,特别是压控石英振荡器和换能器。