公开(公告)号：US4262217A

公开(公告)日：1981-04-14

申请号：US122724

申请日：1980-02-19

Applicant: Peter A. Levine

Inventor： Peter A. Levine

IPC: H03H15/00 ,  G11C19/28 ,  G11C27/00 ,  G11C27/04 ,  H01L21/339 ,  H01L29/417 ,  H01L29/762 ,  H01L29/768 ,  H03H15/02 ,  H04N9/78 ,  H01L29/78

CPC classification number: H03H15/02 ,  G11C19/285 ,  G11C27/00 ,  H01L29/76808 ,  H04N9/78

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US4245199A

公开(公告)日：1981-01-13

申请号：US904790

申请日：1978-05-11

Applicant: Paul I. Suciu

Inventor： Paul I. Suciu

IPC: H01L29/768 ,  H03H15/02 ,  G11C19/28 ,  H03K5/135

CPC classification number: H01L29/76875 ,  H01L29/768 ,  H03H15/02

Abstract: A filter in the form of a semiconductor charge coupled device (CCD) split electrode transveral filter section (10) of many transfer stages, typically of the order of 150, is characterized by a controllable detection threshold level by means of the addition of an auxiliary CCD split-electrode section (20) of but a few stages, typically one or two. Each segment of a split-electrode 209 of this auxiliary section (20) is connected to the corresponding sense line of the transveral filter section (10).

Abstract translation: 许多传输级的半导体电荷耦合器件（CCD）分离电极跨滤波器部分（10）形式的滤波器通常为150级，其特征在于通过添加辅助器件的可控检测阈值电平 CCD分离电极部分（20），但是几个阶段，通常是一个或两个。 该辅助部分（20）的分割电极209的每个部分连接到过渡部分（10）的相应感测线。

公开(公告)号：US4244262A

公开(公告)日：1981-01-13

申请号：US940507

申请日：1978-09-07

Applicant: Atsushi Imai

Inventor： Atsushi Imai

IPC: H03H15/02 ,  G10H1/00 ,  G10K15/12 ,  H03H11/26 ,  G10H1/043 ,  G10H1/10

CPC classification number: G10K15/12 ,  Y10S84/04 ,  Y10S84/26

Abstract: When the frequency of an input sound signal applied to a shifting type echo-machine is close to that of the shift pulse thereof, a false signal appears at the output terminal of the echo-machine, in addition to the other type of noise signal caused by inclusion of the shift pulse component in the output of the same. The present invention is an echo-machine provided with first and second low pass filters, arranged before and after the delay element included in the echo-machine respectively, with a variable cut-off frequency which varies in accordance with the frequency of the shift pulse thereby eliminating such an erroneous signal and the shift pulse component from the output signal of the echo-machine. In its more specific aspects, the echo-machine is provided with low pass filters with a variable cut-off frequency employing an active filter containing one or more integrating circuit of which the input signal is interrupted in accordance with the frequency of a clock pulse to determine the cut-off frequency of the active filter.

Abstract translation: 当施加到移动式回波机的输入声音信号的频率接近于其移位脉冲的频率时，除了引起的其它类型的噪声信号之外，在回波机的输出端子处出现假信号 通过在其输出中包括移位脉冲分量。 本发明是一种回波机，设置有分别包括在回波机中的延迟元件之前和之后的第一和第二低通滤波器，其具有根据移位脉冲的频率而变化的可变截止频率 从而从回波机的输出信号中消除这样的错误信号和移位脉冲成分。 在其更具体的方面中，回波机设置有具有可变截止频率的低通滤波器，该可选截止频率采用有源滤波器，该有源滤波器包含一个或多个积分电路，其中输入信号根据时钟脉冲的频率被中断 确定有源滤波器的截止频率。

公开(公告)号：US4243958A

公开(公告)日：1981-01-06

申请号：US33361

申请日：1979-04-26

Applicant: Doran K. Wilde

Inventor： Doran K. Wilde

IPC: H03H15/02 ,  G11C19/28 ,  G11C27/00

CPC classification number: H03H15/02

Abstract: A phase multiplexed CCD transversal filter includes N substantially identical parallel-connected CCD's which acquire samples in a predetermined consecutive order over a given clock cycle so that the apparent sampling frequency is equal to N times the clock frequency. The output taps of the CCD's are weighted in a predetermined manner to provide a filter having a predetermined transfer function.

Abstract translation: 相位多路复用CCD横向滤波器包括N个基本上相同的并联CCD，其在给定的时钟周期内以预定的连续顺序获取采样，使得表观采样频率等于时钟频率的N倍。 以预定的方式对CCD的输出抽头进行加权，以提供具有预定传递函数的滤波器。

公开(公告)号：US4163957A

公开(公告)日：1979-08-07

申请号：US832232

申请日：1977-09-12

Applicant: Karl Knauer ,  Max Schlichte ,  Hans-Joerg Pfleiderer

Inventor： Karl Knauer ,  Max Schlichte ,  Hans-Joerg Pfleiderer

IPC: H01L29/768 ,  H03H15/02 ,  H03H7/28 ,  G11C19/28 ,  H01L29/76 ,  H03K5/156

CPC classification number: H03H15/02 ,  H01L29/76891 ,  H03H15/023

Abstract: In illustrated embodiments, at least one analogue shift register has a number of parallel inputs and one series output. A number of individual evaluating circuits receive the signal to be filtered and supply respective output quantities of charge equal to the product of the difference between the relevant signal value and a predetermined minimum or maximum value, and a respective individual evaluation factor. The output of each evaluating circuit can be connected via a switching element to an associated parallel input. The capacity of every storage position of the shift register is at least such that it is always able to accommodate the maximum quantity of charge supplied by the preceding storage position, and when the storage position has a parallel input, can additionally accommodate the maximum quantities of charge supplied by the associated evaluating circuit (s). Various modifications are disclosed for reducing the space requirement of a transversal filter when implemented, for example, as a CCD.

Abstract translation: 在所示实施例中，至少一个模拟移位寄存器具有多个并行输入和一个串联输出。 多个单独的评估电路接收要滤波的信号，并提供相应的输出电荷量等于相关信号值与预定最小值或最大值之差的乘积，以及各自的评估因子。 每个评估电路的输出可以经由开关元件连接到相关联的并行输入。 移位寄存器的每个存储位置的容量至少使得其总是能够适应由先前存储位置提供的最大量的电荷，并且当存储位置具有并行输入时，可另外容纳最大量的 由相关联的评估电路提供的电荷。 公开了用于在实现例如CCD时减小横向滤波器的空间需求的各种修改。

公开(公告)号：US4161706A

公开(公告)日：1979-07-17

申请号：US869069

申请日：1978-01-12

Applicant: James F. Dubil ,  Alain M. Falcoz ,  Rene J. Glaise ,  Christian A. Jacquart ,  Howard N. Leighton ,  Vladimir Riso ,  Raymond J. Wilfinger

Inventor： James F. Dubil ,  Alain M. Falcoz ,  Rene J. Glaise ,  Christian A. Jacquart ,  Howard N. Leighton ,  Vladimir Riso ,  Raymond J. Wilfinger

IPC: H03H15/02 ,  H03H9/28 ,  G11C19/28 ,  H03H7/30 ,  H03K5/156

CPC classification number: H03H15/023

Abstract: This specification describes a charge-transfer device transversal filter chip in which an input signal is fed in parallel into a number of channels the outputs of which are summed together to provide the desired transversal filter transfer function. Each channel contains an analog shift register, a signal splitter and a polarity selector. The shift registers are of unequal length to provide a different delay thru each channel. The signal splitter provides a plurality of signal paths thru each channel while the polarity selector determines whether a given path in a given channel is added or subtracted in the summation to determine the gain of the given channel in the summation.

Abstract translation: 本说明书描述了一种电荷传输器件横向滤波器芯片，其中输入信号并行馈送到多个通道，其输出相加在一起以提供期望的横向滤波器传递函数。 每个通道包含模拟移位寄存器，信号分路器和极性选择器。 移位寄存器的长度不等于通过每个通道提供不同的延迟。 信号分离器通过每个通道提供多个信号路径，而极性选择器确定给定通道中的给定路径是否在加法中相加或减去以确定求和中给定通道的增益。

公开(公告)号：US4153876A

公开(公告)日：1979-05-08

申请号：US791614

申请日：1977-04-27

Applicant: Michael J. Cochran

Inventor： Michael J. Cochran

IPC: H03D1/24 ,  H03D7/00 ,  H03H15/02 ,  H03H17/00 ,  H03L7/091 ,  H03L7/18 ,  H03L7/183 ,  H04B1/40 ,  H04W84/00

CPC classification number: H04W84/00 ,  H03D1/24 ,  H03D7/00 ,  H03H15/02 ,  H03L7/091 ,  H03L7/183 ,  H04B1/40

Abstract: Disclosed is a radio system comprising mixing means for simultaneously receiving electronic input signals consisting of a plurality of non-overlapping frequency bands and first clocking signals having a first selectable frequence. The mixing means frequency shifts the input signals by the first selectable frequency. A charge transfer device transversal filter has inputs coupled to receive the frequency shifted signals. The charge transfer device filters one frequency band from the frequency shifted signals and further frequency shifts the selected band in response to a second clocking signal. Demodulator means is coupled to the output of the charge transfer device filter for demodulating the selected one further downshifted frequency band.

Abstract translation: 公开了一种无线电系统，包括混合装置，用于同时接收由多个非重叠频带组成的电子输入信号和具有第一可选择频率的第一时钟信号。 混合装置将输入信号频率移位第一可选频率。 电荷转移装置横向滤波器具有耦合以接收频移信号的输入。 电荷转移装置从频移信号滤波一个频带，并响应于第二时钟信号进一步频移所选频带。 解调器装置耦合到电荷转移装置滤波器的输出端，用于解调所选择的一个进一步降低的转换频带。

公开(公告)号：US4149605A

公开(公告)日：1979-04-17

申请号：US888639

申请日：1978-03-21

Applicant: Erhard Mettler ,  Hans Frey

Inventor： Erhard Mettler ,  Hans Frey

IPC: G01G23/18 ,  G01G3/02 ,  G01G3/16 ,  G01G7/04 ,  G01G23/37 ,  H03H15/02 ,  G01G23/14

CPC classification number: H03H15/02 ,  G01G23/3721 ,  G01G3/02 ,  G01G3/16 ,  G01G7/04 ,  Y10S177/03

Abstract: In known scales, switching from a fine to a course measurement range automatically decreases the resolution by at least one place. Since the change in range takes place in dependence upon the total weight applied to the scale, displayed values after taring still lack at least one significant digit relative to the fine indication. In the present invention this digit is reactivated automatically upon activation of the tare key if the weight after taring is less than the predetermined fine range limiting weight.

Abstract translation: 在已知的刻度上，从精细切换到课程测量范围自动将分辨率降低至少一个地方。 由于范围的变化取决于施加到刻度的总重量，所以在去皮之后的显示值仍然相对于精细指示缺少至少一个有效数字。 在本发明中，如果皮重之后的重量小于预定的精细范围限制重量，则在激活皮重时自动重新启用该数字。

公开(公告)号：US4145676A

公开(公告)日：1979-03-20

申请号：US788779

申请日：1977-04-19

Applicant: Roger Benoit-Gonin ,  Jean L. Berger ,  Sylvain Fontanes

Inventor： Roger Benoit-Gonin ,  Jean L. Berger ,  Sylvain Fontanes

IPC: H01L21/339 ,  H01L29/76 ,  H01L29/762 ,  H01L29/768 ,  H01L29/772 ,  H01L29/78 ,  H03H15/02 ,  H03H7/28 ,  G11C19/28 ,  H01L27/10

CPC classification number: H01L29/76808 ,  H03H15/02

Abstract: An input stage for a transversal charge transfer filter, which suppresses parasitic image frequencies. It comprises two parallel channels to which the input signal is applied simultaneously. Sampling of the signal is performed in each channel with a periodicity Te, and a relative phase-shift of Te/2. The two samples are then added in order to eliminate components having periodicities in the neighborhood of Te. The present invention relates to low-pass filters using the phenomenon of electrical charge transfer occurring in a semiconductor. It relates more particularly to an input stage for this kind of CTD (Charge Transfer Device) filter, which attenuates parasitic frequencies. The design of CTD low-pass filters, often referred to as transversal filters, poses a classic problem due to the fact that the input stage is a sampling stage. In other words, when the input signal contains a component of frequency Fs close to the sampling frequency Fe, by a process of frequency mixing, two parasitic signals at the image frequencies Fe + Fs and Fe - Fs are created. Since we are concerned with a low-pass filter, the top image frequency (Fe + Fs) is automatically eliminated but the bottom image frequency (Fe - Fs) can be transmitted by the filter and appear in the output signal if the condition Fe - Fs

Abstract translation: 用于横向电荷转移滤波器的输入级，其抑制寄生图像频率。 它包括同时施加输入信号的两个并行通道。 在每个通道中以周期Te执行信号的采样，并且执行Te / 2的相对相移。 然后添加两个样品以消除在Te附近具有周期性的组分。

公开(公告)号：US4140975A

公开(公告)日：1979-02-20

申请号：US791256

申请日：1977-04-27

Applicant: Michael J. Cochran ,  Edward R. Caudel

Inventor： Michael J. Cochran ,  Edward R. Caudel

IPC: H03D1/24 ,  H03D7/00 ,  H03H15/02 ,  H03H17/00 ,  H03L7/091 ,  H03L7/18 ,  H03L7/183 ,  H04B1/40 ,  H04W84/00 ,  H04B1/38

CPC classification number: H04W84/00 ,  H03D1/24 ,  H03D7/00 ,  H03H15/02 ,  H03L7/091 ,  H03L7/183 ,  H04B1/40

Abstract: A programmable filter module includes a charge transfer device bandpass filter and a phase locked loop. The bandpass filter has a plurality of passbands dependent upon the frequency of a clocking signal. The phase locked loop receives a reference signal of one frequency and in response thereto, generates the clocking signals in the form N1 divided by N2 times the frequency of the reference signal, where N1 and N2 are programmable integers.

Abstract translation: 可编程滤波器模块包括电荷转移装置带通滤波器和锁相环。 带通滤波器具有取决于时钟信号的频率的多个通带。 锁相环接收一个频率的参考信号，并响应于此，产生N1的频率信号除以参考信号频率的N2倍，其中N1和N2是可编程整数。