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1. 发明授权

US5343896A Papermakers fabric having stacked machine direction yarns 失效
标题翻译：造纸机织物具有堆叠的机器方向纱线
公开(公告)号：US5343896A
公开(公告)日：1994-09-06
申请号：US951081
申请日：1992-09-25
申请人： Ernst Schroder , Henry J. Lee
发明人： Ernst Schroder , Henry J. Lee
IPC分类号： D21F1/00 , D21F7/08 , D03D13/00 , D03D15/00
CPC分类号： D21F1/0036 , D21F1/0054 , D21F7/083 , Y10T442/3203
摘要： A papermakers fabric having a system of monofilament machine direction yarns (hereinafter MD yarns) which control the permeability of the fabric. The present weave provides for usage of high aspect ratio yarns as structural weave components. The system of MD yarns comprises multiple layers of yarns which are vertically stacked. Preferably, upper MD yarns define floats on the upper surface of the fabric and each upper MD yarn is grouped in a vertically stacked orientation with an intermediate and a lower MD yarn.
摘要翻译：一种造纸织物，其具有控制织物渗透性的单丝机器方向纱线（以下称为MD纱线）的系统。目前的织造提供了高纵横比纱线作为结构编织部件的使用。 MD纱线的系统包括垂直堆叠的多层纱线。优选地，上MD纱线在织物的上表面上限定漂浮物，并且每个上MD纱线以垂直堆叠的方向与中间和下层MD纱线分组。

2. 发明授权

US4322636A Circuit system for the generation of a direct control voltage dependent upon an alternating voltage 失效
标题翻译：用于产生取决于交流电压的直接控制电压的电路系统
公开(公告)号：US4322636A
公开(公告)日：1982-03-30
申请号：US56972
申请日：1979-07-11
申请人： Ernst Schroder
发明人： Ernst Schroder
IPC分类号： H03G7/00 , H03K4/00 , H03K17/296 , H03K4/06 , H03K17/28
CPC分类号： H03G7/00 , H03K4/00
摘要： A circuit for generating a direct control voltage dependent on an alternating voltage, particularly for the generation of a direct control voltage in a system for dynamic compression and expansion, including a storage capacitor for providing the control voltage, at least one electronically controllable charging circuit and at least one electronically controllable discharging circuit connected to the storage capacitor, a comparator for comparing an alternating voltage input signal with a reference value, first and second control circuit paths for connecting the output of the comparator to the control inputs of the charging circuit and the discharging circuit respectively, a time-delay circuit connected in one of the control circuit paths, and an inverter connected in one of the control circuit paths so that the output signals from the two control circuit paths are inverted with respect to one another.
摘要翻译：一种用于产生取决于交流电压的直接控制电压的电路，特别是用于在用于动态压缩和扩展的系统中产生直接控制电压，包括用于提供控制电压的存储电容器，至少一个电子可控充电电路和连接到存储电容器的至少一个电子可控放电电路，用于将交流电压输入信号与参考值进行比较的比较器，用于将比较器的输出连接到充电电路的控制输入的第一和第二控制电路路径，分别连接在一个控制电路路径中的延时电路和连接在一个控制电路路径中的逆变器，使得来自两个控制电路路径的输出信号彼此相反。

3. 发明授权

US4099134A Amplifier with controllable transmission factor and switchable control characteristic 失效
标题翻译：具有可控传输系数和可切换控制特性的放大器
公开(公告)号：US4099134A
公开(公告)日：1978-07-04
申请号：US808628
申请日：1977-06-21
申请人： Ernst Schroder
发明人： Ernst Schroder
IPC分类号： H03G7/00 , H03G5/12 , H03G9/02 , H03F1/34
CPC分类号： H03G9/025 , H03G5/12
摘要： An amplifier whose transmission factor is to be controlled as a function of a control voltage and including an amplifier member having a negating input, connected to have its impedance varied by the control voltage and an electronically controllable variable impedance having one side connected to the amplifier member output, a second impedance connected between the other side of the first impedance and ground, and a switch assembly for switching the connections within the amplifier between two operating states providing mutually complementary control characteristics, the amplifier member output providing the amplifier output in one operating state and being connected to the negating input in the other operating state, and the point of connection between the impedances being connected to the negating input in the one operating state and providing the amplifier output in the other operating state.
摘要翻译：一个放大器，其传输因子要被控制为一个控制电压的函数，并且包括具有一个否定输入的放大器构件，该放大器构件被连接成使其阻抗随着控制电压的变化而变化，一个电子可控的可变阻抗的一侧连接到放大器构件输出，连接在第一阻抗和地之间的第二阻抗以及用于在提供相互补充的控制特性的两个操作状态之间切换放大器内的连接的开关组件，放大器构件输出在一个操作状态下提供放大器输出并且在另一个操作状态下连接到否定输入，并且阻抗之间的连接点在一个操作状态下连接到否定输入，并且在另一个操作状态下提供放大器输出。

4. 发明授权

US4821260A Transmission system 失效
标题翻译：传输系统
公开(公告)号：US4821260A
公开(公告)日：1989-04-11
申请号：US135511
申请日：1987-12-16
申请人： Otto Klank , Ernst Schroder , Walter Voessing
发明人： Otto Klank , Ernst Schroder , Walter Voessing
IPC分类号： G10L19/00 , H04B1/66 , H04B14/04 , H04J3/00 , H04L27/20
CPC分类号： H04B1/66
摘要： A system for transmitting and receiving digitalized audio signals, particularly via satellites, wherein data sequences are arranged in timely succession within frames, wherein before transmission, the digitalized audio signal is converted to a digital signal representing the momentary frequency spectrum and, during subsequent coding of the digital audio signal to be transmitted, portions of this transformed signal are given different weights on the basis of psychoacoustic laws with respect to the accuracy of their representation.
摘要翻译：一种用于特别经由卫星发送和接收数字化音频信号的系统，其中数据序列被及时地依次排列在帧内，其中在传输之前，数字化音频信号被转换成表示瞬时频谱的数字信号，并且在随后的编码期间要传输的数字音频信号，这个变换信号的一部分在心理声学规律的基础上就其表示的准确性给出不同的权重。

5. 发明授权

US4218662A Circuit arrangement for optional dynamic compression or expansion 失效
标题翻译：可选动态压缩或扩展的电路布置
公开(公告)号：US4218662A
公开(公告)日：1980-08-19
申请号：US931394
申请日：1978-08-04
申请人： Ernst Schroder
发明人： Ernst Schroder
IPC分类号： H04B1/64 , H03G7/00 , H03G11/02
CPC分类号： H03G11/02 , H03G7/004
摘要： A circuit arrangement for automatic dynamic compression and/or expansion having an auxiliary circuit provided in the useful signal path or in the negative feedback path of an amplifier. The auxiliary circuit has a first and a second connection point. On the one hand there are arranged between the first and the second connection point a first damping or amplifying member, an electronically controllable damping member and a second damping or amplifying member connected in series. On the other hand means for limiting the voltage or current are arranged between the first and second connection point.
摘要翻译：一种用于自动动态压缩和/或扩展的电路装置，其具有设置在放大器的有用信号路径或负反馈路径中的辅助电路。辅助电路具有第一和第二连接点。一方面，在第一和第二连接点之间布置有串联连接的第一阻尼或放大构件，电子可控阻尼构件和第二阻尼或放大构件。另一方面，用于限制电压或电流的装置被布置在第一和第二连接点之间。

6. 发明授权

US4181896A Device for optional dynamic compression or expansion 失效
标题翻译：可选动态压缩或扩展的设备
公开(公告)号：US4181896A
公开(公告)日：1980-01-01
申请号：US923194
申请日：1978-07-10
申请人： Ernst Schroder
发明人： Ernst Schroder
IPC分类号： H04B1/64 , H03G7/00 , H03G3/20 , H03G7/08
CPC分类号： H03G7/004
摘要： A circuit for optional dynamic compression or expansion, with one amplifier located in the useful signal path and controllable in amplification, and an auxiliary branch including one amplifier controllable in amplification and a control voltage generator, to the input of which a useful signal path is connected and the output voltage of which serves to control the controllable amplification in the useful signal path and in the auxiliary branch, and wherein as adjusting members for controlling the amplification of the controllable amplifiers there serve field effect transistors to the control electrodes of which respective direct control voltages are applied. In parallel with the source-sink path of one field effect transistor serving as adjusting member for an amplifier located in the useful signal path there is connected a voltage divider the tapping of which is connected via a separating amplifier to the control electrode of the field effect transistor. The output of the separating amplifier is additionally connected to the control electrode of a field effect transistor serving as adjusting member for an amplifier located in the auxiliary branch. suBACKGROUND OF THE INVENTIONFrom U.S. Pat. No. 3,969,680, a compander system is known in which for optional dynamic compression or expansion there are provided at least one amplifier of controllable amplification located in the useful signal path, and an auxiliary branch including at least one amplifier of controllable amplification as well as a control voltage generator, the input of the auxiliary branch being connected to the useful signal path and the output voltage of the control voltage generator serving to control the controllable amplification in the useful signal path and in the auxiliary branch.As adjusting members for the amplifiers of controllable amplification there are advantageously used field effect transistors, which have a comparatively linear control characteristic and hence effect only a slight distortion of the alternating voltage signal to be influenced in amplitude. In order to attain these advantages in the case of a field effect transistor operated as an adjusting member (controllable resistor) one can, in accordance with German Offenlegungsschrift No. 21 61 905, apply to the control electrode of the related field effect transistor, in addition to the direct control voltage, half of the alternating voltage between the source and sink. For decoupling the said two voltages (direct control voltage and alternating voltage) a separating condenser is used.Additionally to the said advantageous property of a field effect transistor it is required that a field effect transistor used as a controllable resistance should have a short time constant as regards its controlling action. In this manner a relatively rapid alteration of the resistance of the field effect transistor is to be made possible. This requirement cannot at once be met when using the said separating condenser. It has therefore been proposed (German Offenlegungsschrift No. 24 03 756) to use a separating amplifier instead of the separating condenser.SUMMARY OF THE INVENTIONThe invention is based on the problem of providing a compander system of the type described initially in which field effect transistors are used as adjusting members and which makes possible a rapid control of the value of the resistance of the field effect transistor with only slight expenditure and with the retention of the said advantages of field effect transistors.According to the invention, in parallel with the source-sink path of one field effect transistor serving as adjusting member for an amplifier located in the useful signal path there is connected a voltage divider the tapping of which is connected via a separating amplifier to the control electrode of the field effect transistor. The output of the separating amplifier is additionally connected to the control electrode of a field effect transistor serving as adjusting member for an amplifier located in the auxiliary branch.The invention is based inter alia on appreciation of the fact that in the compander system described advantageous control of a field effect transistor operating as an adjusting member in the branch path is also possible if the alternating voltage applied to its control electrode additionally to the direct control voltage is derived not from its source-sink path but from the source-sink path of a field effect transistor operating as an adjusting member in the useful signal path. This is based essentially on the fact that in those cases of operation which for the reasons given an alternating voltage must also be applied to the control electrode of the controlled field effect transistor (high input voltage of the compander and amplifications of the adjusting amplifiers close to the value 1) the alternating voltage or its half derived from the field effect transistor operating suitably in the useful signal path is of the order of magnitude of the alternating voltage necessary for the field effect transistor suitably operating in the branch path.The invention has the advantage that for a field effect transistor suitably operating in the branch path no separate separating amplifier is necessary for separating the two voltages (direct control voltage and alternating voltage) applied to its control electrode.
摘要翻译：用于可选的动态压缩或扩展的电路，其中一个放大器位于有用的信号路径中并且可在放大中控制，以及辅助支路，其包括一个放大器可控制的放大器和一个控制电压发生器，输入端连接有用的信号路径并且其输出电压用于控制有用信号路径和辅助支路中的可控放大，并且其中，作为用于控制可控放大器的放大的调整部件，其向相应的直接控制的控制电极提供场效应晶体管施加电压。与用作位于有用信号路径中的放大器的调整构件的一个场效应晶体管的源极 - 沟道路径并联连接有分压器，分压器经由分离放大器连接到场效应的控制电极晶体管。分离放大器的输出另外连接到用作位于辅助支路中的放大器的调整构件的场效应晶体管的控制电极。

7. 发明授权

US4072906A Variable gain amplifier with adjustable upper frequency limit 失效
标题翻译：可变增益放大器，可调节上限频率
公开(公告)号：US4072906A
公开(公告)日：1978-02-07
申请号：US727372
申请日：1976-09-27
申请人： Ernst Schroder
发明人： Ernst Schroder
IPC分类号： H03G9/02 , H03F1/36
CPC分类号： H03F3/45475 , H03G9/025 , H03F2203/45522 , H03F2203/45526
摘要： An amplifier circuit including a differential amplifier and having an effective transmission frequency band delimited by a lower limit frequency which can be varied by application of a control voltage is also given a defined upper limit frequency by connecting a resistance in series with a frequency dependent impedance between an inverting input of the amplifier and a point at the circuit reference potential. The value of the resistance can be adjusted to provide the desired upper limit frequency value and can be varied to change that frequency value.
摘要翻译：包括差分放大器并具有由可通过施加控制电压而改变的下限频率限定的有效传输频带的放大器电路也通过将电阻与频率相关阻抗串联连接而被给定在限定的上限频率上放大器的反相输入和电路参考电位的点。可以调整电阻的值以提供所需的上限频率值，并且可以改变以改变该频率值。

8. 发明授权

US2348826A Coating of objects of magnesium or the like with oxides 失效
标题翻译：用氧化物涂覆镁等物体
公开(公告)号：US2348826A
公开(公告)日：1944-05-16
申请号：US23897638
申请日：1938-11-05
申请人： ERNST KRAUSE , ERNST SCHRODER
发明人： ERNST KRAUSE , ERNST SCHRODER
IPC分类号： C25D11/30
CPC分类号： C25D11/30

9. 发明授权

US4590531A System for compensating signal interference in a PCM audio transmission 失效
标题翻译：用于补偿PCM音频传输中的信号干扰的系统
公开(公告)号：US4590531A
公开(公告)日：1986-05-20
申请号：US641256
申请日：1984-08-16
申请人： Hans-Joachim Platte , Walter Voessing , Gunter Oberjatzas , Ernst Schroder
发明人： Hans-Joachim Platte , Walter Voessing , Gunter Oberjatzas , Ernst Schroder
IPC分类号： H04B1/74 , G11B20/02 , G11B20/18 , H04B1/10 , G11B5/09
CPC分类号： G11B20/1876
摘要： A pulse code modulated audio signal transmission system which compensates for signal interference in the pulse code modulated audio signal. The system includes a first device for receiving an audio signal and for converting the audio signal into a pulse code modulated audio signal, and a second device for receiving the audio signal and for producing an auxiliary signal corresponding to the audio signal but having a smaller bandwidth than the audio signal. A transmission circuit is connected to the first and second devices for receiving the pulse code modulated audio signal and the auxiliary signal and for producing an output signal which comprises the audio signal with portions of the audio signal which contain interference being substituted with corresponding portions of the auxiliary signal.
摘要翻译：脉冲编码调制音频信号传输系统，其补偿脉冲编码调制音频信号中的信号干扰。该系统包括用于接收音频信号并将音频信号转换成脉冲编码调制音频信号的第一装置，以及用于接收音频信号并产生对应于音频信号但具有较小带宽的辅助信号的第二装置比音频信号。传输电路连接到第一和第二设备，用于接收脉冲编码调制音频信号和辅助信号，并且用于产生包括音频信号的输出信号，该部分音频信号包含被相应部分的干扰辅助信号。

10. 发明授权

US4441041A Circuit arrangement for generating a direct control voltage which is dependent on an alternating voltage 失效
标题翻译：用于产生取决于交流电压的直接控制电压的电路装置
公开(公告)号：US4441041A
公开(公告)日：1984-04-03
申请号：US389494
申请日：1982-06-17
申请人： Ernst Schroder
发明人： Ernst Schroder
IPC分类号： G05F3/26 , H02M7/21 , H03G3/20 , H03G7/00 , H03G3/10
CPC分类号： H03G7/002
摘要： The invention relates to a circuit arrangement in a compander system for generating a direct control voltage which is dependent on an alternating voltage with the circuit arrangement including a time constant switch. The conductance determining the time constant in a charging current circuit is constantly varied in the transfer range in dependence on the voltage of a charging capacitor when a time constant switch takes place from one fixed value to a second fixed value.
摘要翻译：本发明涉及一种压扩扩展系统中的电路装置，用于产生取决于交流电压的直接控制电压，该电路装置包括时间常数开关。在从一个固定值到第二固定值进行时间常数切换时，根据充电电容器的电压，确定充电电流电路中的时间常数的电导在传输范围内不断变化。

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