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公开(公告)号：US20060181257A1
公开(公告)日：2006-08-17
申请号：US10548252
申请日：2004-03-01
IPC分类号： G05F3/16
CPC分类号： G05F3/265
摘要： The present invention relates to Current mirror for generating a constant mirror ratio, comprising an output transistor (Tout) having a base, an emitter and a collector, wherein a current flowing through the collector of said output transistor (Tout) constitutes an output current (Iout) of said current mirror and the collector of said output transistor (Tout) is connectable to an output circuit, a buffer transistor having a base, an emitter and a collector, wherein the emitter of the buffer transistor is connected to the base of the output transistor, a buffer current source for providing a fixed buffer current, wherein said buffer current source is connected to the collector of the buffer transistor, and a buffer base voltage control means having an input connected to the base of the output transistor and an output connected to the base of the buffer transistor, wherein the base voltage control means is adapted to controlling a voltage at the base of the buffer transistor in response to a current at the input of the buffer base voltage control means.
摘要翻译： 本发明涉及用于产生恒定镜面比例的电流镜，其包括具有基极，发射极和集电极的输出晶体管（T OUT），其中流过所述输出的集电极的电流 晶体管（T out out out）构成所述电流镜的输出电流（I OUT），并且所述输出晶体管的集电极（T out out）是 可连接到输出电路，具有基极，发射极和集电极的缓冲晶体管，其中缓冲晶体管的发射极连接到输出晶体管的基极，缓冲电流源用于提供固定的缓冲电流，其中所述缓冲器 电流源连接到缓冲晶体管的集电极，以及缓冲器基极电压控制装置，其具有连接到输出晶体管的基极的输入端和连接到缓冲晶体管的基极的输出，其中基极电压控制装置被适配 以控制电压 e缓冲晶体管的基极，响应于缓冲器基极电压控制装置的输入处的电流。
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2.发明申请公开(公告)号：US20050254828A1
公开(公告)日：2005-11-17
申请号：US10520228
申请日：2003-07-01
CPC分类号： H04B10/69 , G11B7/13 , G11B19/125
摘要： The optical signal receiving unit (10), which receives and processes an optical signal, can be programmed by the optical signal. The optical signal is detected by an optical sensor (20) and processed by a signal processor (40). The signal processor (40) has an operating mode, which is set by a programmable control unit (30). The control unit (30) is programmable by a program signal derived from the optical signal. In one embodiment the optical signal receiving unit (10) can be switched between two operating modes by a program switch signal provided at a program switch terminal (53). The apparatus (100) for reproducing information from an optical data carrier (101) comprises an optical signal receiving unit (10) according to the invention.
摘要翻译： 可以通过光信号对接收和处理光信号的光信号接收单元（10）进行编程。 光信号由光学传感器（20）检测并被信号处理器（40）处理。 信号处理器（40）具有由可编程控制单元（30）设置的操作模式。 控制单元（30）可通过从光信号导出的程序信号来编程。 在一个实施例中，光信号接收单元（10）可以通过在程序交换终端（53）处提供的程序切换信号在两种操作模式之间切换。 用于从光数据载体（101）再现信息的装置（100）包括根据本发明的光信号接收单元（10）。
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公开(公告)号：US20050212610A1
公开(公告)日：2005-09-29
申请号：US10528254
申请日：2003-08-08
CPC分类号： H03B5/1228 , H03B5/1209 , H03B5/1215 , H03B5/1221 , H03B5/1243
摘要： An LC oscillator (I) comprises a cross-coupled PMOS transistor pair (Ma, Mb) coupled to a pair of capacitors (Cva, Cvb) and a pair of inductances (La, Lb). To enhance the signal amplification of the oscillator, a pair of auxiliary transistor circuits (Qa, Qb; Na, Nb) is provided which are coupled between the drain and, preferably, the source of each PMOS transistor. The capacitors (Cva, Cvb) are preferably variable capacitors and the inductances (La, Lb) are preferably connected to ground to allow a enlarged tuning voltage range.
摘要翻译： LC振荡器（I）包括耦合到一对电容器（Cva，Cvb）和一对电感（La，Lb）的交叉耦合PMOS晶体管对（Ma，Mb）。 为了增强振荡器的信号放大，提供一对辅助晶体管电路（Qa，Qb; Na，Nb），其耦合在每个PMOS晶体管的漏极和优选地源极之间。 电容器（Cva，Cvb）优选地是可变电容器，并且电感（La，Lb）优选地连接到地，以允许扩大的调谐电压范围。
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公开(公告)号：US20050174179A1
公开(公告)日：2005-08-11
申请号：US10515689
申请日：2003-05-13
CPC分类号： H03L7/099 , H03B5/1206 , H03B5/1243 , H03B2202/04 , H03B2202/07 , H03L7/0891 , H03L2207/06
摘要： A PLL circuit (1) comprising a series coupling of a charge pump (10), a loop filter (20) and a voltage-controlled oscillator (30) generating an output frequency (f), said voltage-controlled oscillator (30) comprising tunable devices (C1, C2, C1′, C2, C3) controlled by a first control signal (Vt1) generated by the loop filter (20), the PLL circuit (1) being characterized in that it further comprises a leakage compensation circuit (40) for generating a leakage compensation signal (IL) to modify a control of the voltage-controlled oscillator (30), the leakage compensation signal (IL) being indicative for a leakage current in the tunable devices of the voltage-controlled oscillator (30).
摘要翻译： 一种PLL电路（1），包括电荷泵（10），环路滤波器（20）和产生输出频率（f）的压控振荡器（30）的串联耦合，所述压控振荡器（30）包括 由环路滤波器（20）产生的第一控制信号（Vt 1）控制的可调谐装置（C 1，C 2，C 1'，C 2，C 3），PLL电路（1） 包括用于产生泄漏补偿信号（IL）以修改压控振荡器（30）的控制的泄漏补偿电路（40），所述泄漏补偿信号（IL）指示所述可调谐装置中的漏电流 压控振荡器（30）。
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公开(公告)号：US20050012526A1
公开(公告)日：2005-01-20
申请号：US10501427
申请日：2002-12-12
CPC分类号： H03F3/45179 , H03F3/3022 , H03F3/45748 , H03F3/45941 , H03F2203/30015 , H03F2203/45008 , H03F2203/45082 , H03F2203/45292 , H03F2203/45681
摘要： An improved differential inverter comprising a differential inverter having a differential input for receiving a first input signal and a second input signal, said inverter further comprising a differential control input for receiving a first control signal and a second control signal. The improved differential inverter further comprises a differential output for transmitting a first output signal and a second output signal. The improved differential inverter further comprises a controlled bias generator that generates the second vector of input signals in response to a bias control signal. The control bias signal is generated at an output of a voltage divider coupled to the differential output of the differential inverter said bias control signal being indicative for a DC voltage of the of the differential output.
摘要翻译： 一种改进的差分逆变器，包括具有用于接收第一输入信号和第二输入信号的差分输入的差分反相器，所述反相器还包括用于接收第一控制信号和第二控制信号的差分控制输入。 改进的差分逆变器还包括用于发送第一输出信号和第二输出信号的差分输出。 改进的差分逆变器还包括受控偏置发生器，其响应于偏置控制信号产生输入信号的第二矢量。 控制偏置信号在耦合到差分逆变器的差分输出的分压器的输出处产生，所述偏置控制信号指示差分输出的直流电压。
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公开(公告)号：US20050265149A1
公开(公告)日：2005-12-01
申请号：US10523386
申请日：2003-07-21
CPC分类号： G11B20/10027 , G11B7/005 , G11B20/10009 , G11B2020/1288 , G11B2220/2541
摘要： Optical disk systems comprising photo detectors (1) with variable gain amplifiers (10) and slicers (11) are provided with generators (12) in feedback paths between slicer (11) and amplifier (10) for controlling said amplifier (10) non-linearly. As a result, time constants of the control loop of said amplifier (10) which depend upon the level of the input signals are now compensated and the timing behavior of the control loop of said amplifier (10) has got a more continuous character. Said generator (12) comprises a converter (13) and is of low complexity and easy to integrate on a photo detector integrated-circuit together with said amplifier (10) and slicer (11) followed by a differential time delay detector (6). Said generator (12) comprises a further converter (14) with a capacitor (15) forming an integrator for making the mean value of the output voltage signal of said slicer (11) equal to zero.
摘要翻译： 包括具有可变增益放大器（10）和限幅器（11）的光电检测器（1）的光盘系统在限幅器（11）和放大器（10）之间的反馈路径中设置有发生器（12），用于控制所述放大器（10） 线性地 结果，依赖于输入信号的电平的所述放大器（10）的控制回路的时间常数现在被补偿，并且所述放大器（10）的控制回路的定时特性具有更连续的特性。 所述发生器（12）包括转换器（13），并且具有低复杂度并且易于与所述放大器（10）和限幅器（11）以及差分延时检测器（6）一起集成在光电检测器集成电路上。 所述发生器（12）包括具有形成用于使所述限幅器（11）的输出电压信号的平均值等于零的积分器的电容器（15）的另外的转换器（14）。
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