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    • 75. 发明授权
    • Filter circuit utilizing charge transfer device
    • 滤波电路利用电荷转移装置
    • US4314162A
    • 1982-02-02
    • US109336
    • 1980-01-03
    • Takao TsuchiyaMitsuo Soneda
    • Takao TsuchiyaMitsuo Soneda
    • G11C27/04G11C19/28G11C27/00H01L21/339H01L29/76H01L29/762H01L29/772H03H7/30H03H15/02H03K5/00H03K17/60
    • H03H15/02G11C19/28G11C27/00H01L29/76
    • A filter circuit of the type utilizing a charge-transfer device, such as a bucket brigade device, comprises a clocking signal drive circuit for supplying a clocking signal; a clock signal generator at whose output a clocking control signal is provided; a transistor whose base is connected to the output of the clock signal generator; a plurality of successive capacitive storage stages for sequentially holding a charge level representing a time-sampled input signal, each of the capacitive storage stages having a clocking electrode for receiving the clocking signal so that the charge level is transferred from one to another of the capacitive storage stages in succession, and at least one of the capacitive storage stages being formed of first and second parallel-connected capacitive circuit portions, and the first and second capacitive circuit portions having respective clocking electrodes coupled to the clock signal generator and to the emitter of the transistor, respectively; and a current feedback circuit, such as a current mirror circuit, for detecting the current flowing through the collector of the transistor and applying a corresponding current to a capacitive storage stage in advance of that stage which is coupled to the emitter of the transistor.
    • 利用诸如铲斗旅装置的电荷转移装置的类型的滤波器电路包括用于提供时钟信号的时钟信号驱动电路; 时钟信号发生器,其输出提供时钟控制信号; 其基极连接到时钟信号发生器的输出的晶体管; 多个连续的电容性存储级,用于顺序地保持表示时间采样的输入信号的电荷电平,每个电容性存储级具有用于接收时钟信号的时钟电极,使得充电电平从电容 存储级,并且电容性存储级中的至少一个由第一和第二并联电容电路部分形成,并且第一和第二电容电路部分具有耦合到时钟信号发生器和与时钟信号发生器的发射极 晶体管; 以及电流反馈电路,例如电流镜电路,用于检测流过晶体管的集电极的电流,并在耦合到晶体管的发射极的该级之前将电流施加到电容性存储级。
    • 76. 发明授权
    • Method of compensating phase noise at the receiver end of a data
transmission system
    • 在数据传输系统的接收端补偿相位噪声的方法
    • US4308618A
    • 1981-12-29
    • US144099
    • 1980-04-28
    • Michel LevyChristian Poinas
    • Michel LevyChristian Poinas
    • H04L25/03H03H15/02H03K5/159
    • H04L25/03038
    • Data in the form of multi-value symbols is transmitted at a symbol rate 1/.DELTA.T. At the receiver a decision circuit supplies estimates of the transmitted symbols on the basis of the received symbols. The present invention concerns compensating phase noise after equalization if any of the received symbols and before application of the received symbols to the decision circuit (38, 39). The received symbols are in complex form with in-phase and quadrature components y.sub.k ' and y.sub.k " respectively. Phase noise is compensated by complex multiplication in a multiplier (36) of the received symbols by a complex coefficient.The invention is particularly applicable to quadrature modulation systems, but if only one channel is transmitted the quadrature channel can be simulated using the Hilbert transform of the one channel.
    • 以符号率1 / DELTA T发送多值符号形式的数据。在接收机处,判决电路根据接收到的符号提供发送符号的估计。 本发明涉及在均衡之后补偿相位噪声,如果任何接收到的符号并且在将接收到的符号应用于判决电路(38,39)之前。 接收的符号分别为同相和正交分量yk'和yk“的复数形式。 相位噪声通过复数系数在接收符号的乘法器(36)中的复数乘法来补偿。 本发明特别适用于正交调制系统,但是如果仅发送一个信道,则可以使用一个信道的希尔伯特变换来模拟正交信道。
    • 78. 发明授权
    • Method and circuit arrangement for the operation of recursive filter
circuits or analog storage circuits constructed according to the charge
coupled device (CCD) principle
    • 用于根据电荷耦合器件(CCD)原理构造的递归滤波器电路或模拟存储电路的操作的方法和电路装置
    • US4283696A
    • 1981-08-11
    • US69790
    • 1979-08-27
    • Karl Goser
    • Karl Goser
    • G11C19/28G11C27/00G11C27/04H03H15/02H03H17/04
    • H03H15/02G11C19/282G11C27/00G11C27/04
    • The invention relates to a method for operating recursive filter circuits or analog storage circuits constructed according to the charge coupled device principle and to a circuit arrangement for implementing the method, in which method only each respective second stage a CCD is occupied with a charge representing a sampling value of an analog signal and the respective stages lying between these stages concerned are left empty. Known circuits constructed according to the CCD principle conduct the signal from the output stage of a CCD chain to the input of the CCD loop via an amplifier to which the input signal is supplied at the same time. Thereby, the amplification must very precisely amount to 1. An amplifier of the high stability required for that purpose which is arranged in common with the CCD concerned on a chip cannot be satisfactorily realized. A method is specified by means of the invention in which the amplifier is replaced by modulation of a sampling value with a reference signal and by means of a charge amount corrected in accord with the result of the modulation.
    • 本发明涉及一种用于操作根据电荷耦合器件原理构造的递归滤波器电路或模拟存储电路的方法,以及用于实现该方法的电路装置,其中仅每个相应的第二级CCD被占用一个代表 模拟信号的采样值以及位于这些相关阶段之间的各个阶段是空的。 根据CCD原理构造的已知电路通过同时提供输入信号的放大器将信号从CCD链的输出级传送到CCD环路的输入。 因此,放大必须非常精确地等于1.与芯片相关的CCD共同设置的该目的所需的高稳定性的放大器不能令人满意地实现。 通过本发明规定了一种方法,其中放大器被具有参考信号的采样值的调制代替,并且借助于根据调制结果校正的电荷量来代替。
    • 79. 发明授权
    • Electric filter circuit consisting of charge transfer device (CTD) lines
    • 电滤波器电路由电荷转移装置(CTD)组成
    • US4268806A
    • 1981-05-19
    • US871613
    • 1978-01-23
    • Hermann BetzlFriedrich Kuenemund
    • Hermann BetzlFriedrich Kuenemund
    • H03H15/02H03H17/00G11C19/28H03H11/00
    • H03H15/02
    • A filter comprising a cascade arrangement of closed line CTD filtering loops has an intermediate CTD coupling loop formed with the adjoining output coupling of the preceding filter loop and input coupling of the succeeding filter loop. Disturbing self-oscillations outside the desired passband are eliminated by adjusting the voltage amplification factors of the amplifiers within the intermediate coupling loop, for example to from about five percent to about fifteen percent less than values selected to give a pure reactance branching circuit at the middle pass frequency. The resulting slight distortion of the transmission characteristic in the pass band of the filter can then be compensated by adjusting the amplifications of other amplifiers, and if necessary the capacitance conditions can be additionally altered.
    • 包括封闭线CTD滤波回路的级联布置的滤波器具有中间CTD耦合回路,该中间CTD耦合回路与前述滤波器回路的相邻输出耦合和后续滤波器回路的输入耦合形成。 通过调节中间耦合回路内的放大器的电压放大因子,例如,比选择的中间耦合回路中的放大器的电压放大系数减去大约百分之五至百分之十五,以在中间产生纯电抗分支电路来消除所需通带之外的干扰自振荡。 通过频率。 然后可以通过调节其他放大器的放大率来补偿滤波器的通带中的传输特性的轻微失真,并且如果需要,可以额外改变电容条件。
    • 80. 发明授权
    • CCD gain control
    • CCD增益控制
    • US4262217A
    • 1981-04-14
    • US122724
    • 1980-02-19
    • Peter A. Levine
    • Peter A. Levine
    • H03H15/00G11C19/28G11C27/00G11C27/04H01L21/339H01L29/417H01L29/762H01L29/768H03H15/02H04N9/78H01L29/78
    • H03H15/02G11C19/285G11C27/00H01L29/76808H04N9/78
    • The present circuit is applicable to buried channel charge coupled devices (CCD's) of the type having an input circuit which employs a "skimming" technique for producing a charge representing an input signal. A given amount of charge initially is present in an input potential well of the CCD and an amount of charge representing an input signal is skimmed therefrom for propagation down the CCD, leaving behind a residual charge which continuously remains in the input potential well. The gain of the input circuit of the CCD is controlled by controlling the amount of this residual charge either in open loop fashion or by means of feedback. A comb filter suitable for separating the luminance and chrominance components of a television signal which includes this circuit is also described.
    • 本电路适用于具有输入电路的类型的掩埋沟道电荷耦合器件(CCD),该输入电路采用“撇取”技术来产生表示输入信号的电荷。 给定的电荷量最初存在于CCD的输入势阱中,并且从其中撇除代表输入信号的电荷量以便向下传播CCD,留下连续保留在输入势阱中的残余电荷。 通过以开环方式或通过反馈控制该剩余电荷的量来控制CCD的输入电路的增益。 还描述了适用于分离包括该电路的电视信号的亮度和色度分量的梳状滤波器。