Device for multiplying a capacitance by a variable coefficient to adjust
a filter cut-off frequency
    1.
    发明授权
    Device for multiplying a capacitance by a variable coefficient to adjust a filter cut-off frequency 失效
    用于将电容乘以可变系数以调整滤波器截止频率的装置

    公开(公告)号:US5726599A

    公开(公告)日:1998-03-10

    申请号:US385476

    申请日:1995-02-08

    申请人: Pierre Genest

    发明人: Pierre Genest

    CPC分类号: H03H11/04 H03H11/405

    摘要: A device for multiplying a capacitance by a variable coefficient, for example for adjusting a cut-off frequency of a filter, includes a current amplifier for amplifying a current flowing through said capacitance. The capacitance is floating between first and second predetermined points. The current amplifier circuit includes a differential current amplifier.

    摘要翻译: 用于将电容乘以可变系数(例如用于调整滤波器的截止频率)的装置包括用于放大流过所述电容的电流的电流放大器。 电容在第一和第二预定点之间浮动。 电流放大器电路包括差分电流放大器。

    Low-noise current pulse generator device
    2.
    发明授权
    Low-noise current pulse generator device 有权
    低噪声电流脉冲发生器

    公开(公告)号:US06236252B1

    公开(公告)日:2001-05-22

    申请号:US09236114

    申请日:1999-01-25

    IPC分类号: H03K3013

    CPC分类号: G05F3/262

    摘要: A current pulse generator device includes current pulse generator circuits and polarizer circuits. It further includes holding circuits for holding the polarization voltage connected to the generator circuits, the holding circuits connected via switch circuits to the polarizer circuits. The switch circuits can assume in succession a closed or adjustment position in which they connect the holding circuits to the polarizer circuits, and an open or operating position in which they isolate the holding circuits from the polarizer circuits so that the generator circuits generate at least one low-noise current pulse. The device can be used in a phase comparator and a radiocommunication terminal, and the phase comparator can be used in a synthesiser.

    摘要翻译: 电流脉冲发生器装置包括电流脉冲发生器电路和偏振器电路。 它还包括用于保持连接到发生器电路的极化电压的保持电路,通过开关电路连接到偏振器电路的保持电路。 开关电路可以连续地假设闭合或调节位置,在该位置,它们将保持电路连接到偏振器电路以及将保持电路与偏振器电路隔离开的或工作位置,使得发生器电路产生至少一个 低噪声电流脉冲。 该器件可用于相位比较器和无线电通信终端,相位比较器可用于合成器。

    Frequency divider having a prescaler followed by a programmable counter,
and a corresponding prescaler and frequency synthesizer
    3.
    发明授权
    Frequency divider having a prescaler followed by a programmable counter, and a corresponding prescaler and frequency synthesizer 失效
    分频器具有预分频器,后面是可编程计数器,以及相应的预分频器和频率合成器

    公开(公告)号:US06066990A

    公开(公告)日:2000-05-23

    申请号:US84981

    申请日:1998-05-28

    申请人: Pierre Genest

    发明人: Pierre Genest

    CPC分类号: H03K23/667 H03L7/193

    摘要: The invention relates to a frequency divider of the type comprising a prescaler followed by a programmable counter, and serving to divide by an overall division ratio D that can be written D=k.N+A. The prescaler operates with a pair of division ratios k/k+1, and includes means for changing from the higher division ratio k+1 to the lower division ratio k as a function of a modulus control signal. N is a first predetermined programmable value corresponding to the division ratio of the programmable counter. A is a second predetermined programmable value such that on being reached by the programmable counter, the prescaler receives the modulus control signal. The following is true: 0.ltoreq.A

    摘要翻译: 本发明涉及一种分频器,其类型包括预分频器,其后面是可编程计数器,并且用于除以可写为D = k.N + A的总分频比D。 预分频器以一对分频比k / k + 1进行工作,并且包括作为模数控制信号的函数的从较高分频比k + 1到较低分频比k的装置。 N是与可编程计数器的分频比对应的第一预定可编程值。 A是第二预定可编程值,使得在由可编程计数器到达时,预分频器接收模数控制信号。 以下是真实的:0

    Method of transmitting in successive time slots
    4.
    发明授权
    Method of transmitting in successive time slots 失效
    在连续时隙中发送的方法

    公开(公告)号:US06606308B1

    公开(公告)日:2003-08-12

    申请号:US09353027

    申请日:1999-07-13

    IPC分类号: H04B7185

    CPC分类号: H04W52/367 H04W52/362

    摘要: Problems of noise emission during transmission in successive time slots (A-B) in mobile telephony are solved by causing the transmitted power to change in a monotonic manner from a previous value to a new value. It is shown that this increases the transmission bit rate.

    摘要翻译: 移动电话中连续时隙(A-B)传输过程中的噪声发射问题是通过使发射功率从先前的值变为新值来解决的。 这表明这增加了传输比特率。

    High performance audio transmission channel
    6.
    发明授权
    High performance audio transmission channel 有权
    高性能音频传输通道

    公开(公告)号:US06597241B1

    公开(公告)日:2003-07-22

    申请号:US09857235

    申请日:2001-09-13

    IPC分类号: H03F338

    CPC分类号: H04R3/00

    摘要: An audio receiver system including: a modulator (1) for modulating a first digital audio signal with a first modulation rate and a second digital audio signal including a plurality of 1-bit words over a predetermined period at a second modulation rate higher than the first modulation rate, and an output device (11) including a loudspeaker (10) and a transmitter for transmitting the second signal in analog form to the loudspeaker (10), characterized in that it further includes a control device (2) connected to the modulator (1) and receiving the signal from it and to the output device (11), the control device is adapted to control the output device (11) from a portion-of said predetermined period, and the length of said portion is determined as a function of the required volume.

    摘要翻译: 一种音频接收机系统,包括:调制器(1),用于以比第一调制速率高的第二调制速率在预定周期内以第一调制速率调制第一数字音频信号和第二数字音频信号,所述第二数字音频信号包括多个1比特字 以及包括扬声器(10)和用于以模拟形式将第二信号发送到扬声器(10)的发射器的输出设备(11),其特征在于,还包括连接到调制器(2)的控制设备(2) 1),并从其接收信号和输出设备(11),控制设备适于从所述预定周期的一部分控制输出设备(11),并且所述部分的长度被确定为功能 的所需体积。

    Method and circuit arrangement to reduce a DC-offset
    7.
    发明授权
    Method and circuit arrangement to reduce a DC-offset 失效
    减少DC偏移的方法和电路布置

    公开(公告)号:US06353641B2

    公开(公告)日:2002-03-05

    申请号:US09123008

    申请日:1998-07-27

    IPC分类号: H04L2506

    CPC分类号: H04L25/062

    摘要: To reduce the DC-offset in bursts (B1, B2) of a digital signal (S1), some samples of one of the digital bursts (B1) which have no predetermined value are averaged by an averager (AV) resulting in a correction value (CV). Meanwhile the samples of this digital burst (B1) are temporarily stored in a memory (MEM1). The DC-offset correction value (CV) calculated by the averager (AV) is then substracted from the samples of the digital bursts (B1, B2). In this way, the dynamic range of the samples is reduced significantly.

    摘要翻译: 为了减少数字信号(S1)的脉冲串(B1,B2)中的直流偏移,通过平均器(AV)对没有预定值的一个数字脉冲串(B1)的一些采样进行平均,导致校正值 (简历)。 同时,该数字脉冲串(B1)的采样被临时存储在存储器(MEM1)中。 然后由平均器(AV)计算出的直流偏移校正值(CV)从数字脉冲串(B1,B2)的样本中减去。 以这种方式,样品的动态范围显着降低。

    Differential current mode amplifier device
    8.
    发明授权
    Differential current mode amplifier device 失效
    差分电流模式放大器器件

    公开(公告)号:US5483194A

    公开(公告)日:1996-01-09

    申请号:US331286

    申请日:1994-10-28

    申请人: Pierre Genest

    发明人: Pierre Genest

    IPC分类号: H03F3/45

    摘要: A differential current mode amplifier device generates a common mode bias current. A translinear multiplier receives at two inputs this common mode bias current and a differential mode current to be amplified and delivers at two outputs an amplified differential mode current. The translinear multiplier is biased in a manner depending on the bias current received by the translinear multiplier. The device includes a circuit for compensating the common mode current at the output of the translinear multiplier.

    摘要翻译: 差分电流模式放大器装置产生共模偏置电流。 一个跨导乘法器在两个输入端接收这个共模偏置电流和一个待放大的差模电流,并在两个输出端输出放大的差模电流。 跨导线性乘法器的偏置方式取决于由跨导乘法器接收的偏置电流。 该器件包括用于补偿在跨线性乘法器的输出处的共模电流的电路。

    Current-mode amplification system, and corresponding operational
amplifier, gain section and amplification element
    9.
    发明授权
    Current-mode amplification system, and corresponding operational amplifier, gain section and amplification element 失效
    电流模式放大系统及相应的运算放大器,增益部分和放大元件

    公开(公告)号:US5471170A

    公开(公告)日:1995-11-28

    申请号:US312037

    申请日:1994-09-26

    申请人: Pierre Genest

    发明人: Pierre Genest

    IPC分类号: H03F1/48 H03F3/345 H03F3/45

    摘要: A current-mode amplification system including a first gain section and at least one second gain section chained together to form a chain of gain sections. The first gain section containing a first amplifier and a first low-pass filter. Each second gain section contains: a second amplifier having (1) a first input receiving the amplified and filtered output current from the preceding gain section in the chain, and (2) a second input receiving an input current of the amplification system, and delivering an amplified output current; an activator/deactivator for activating/deactivating the second input; and a second low-pass filter, the low-pass filter of each of the chained-together gain sections having a high cut-off frequency, the high cut-off frequencies of the various gain sections increasing from the input to the output of the amplification system.

    摘要翻译: 电流模式放大系统,包括第一增益部分和链接在一起的至少一个第二增益部分,以形成增益部分链。 第一增益部分包含第一放大器和第一低通滤波器。 每个第二增益部分包括:第二放大器,其具有(1)第一输入端,接收来自所述链中的前一增益部分的经放大和滤波的输出电流,以及(2)接收所述放大系统的输入电流的第二输入, 放大输出电流; 用于激活/去激活第二输入的激活器/去激活器; 和第二低通滤波器,每个链接在一起的增益部分的低通滤波器具有高截止频率,各种增益部分的高截止频率从输入到输出的增加 放大系统。