-
公开(公告)号：US4381561A
公开(公告)日：1983-04-26
申请号：US199806
申请日：1980-10-23
申请人： Robert Treiber
发明人： Robert Treiber
摘要： A digital telecommunication line circuit implementable on one or more large scale integrated circuit (LSI) chips is described. A simplified integrated hardware structure is provided so as to achieve the combination on an LSI chip of an electronic two-to-four wire hybrid, line impedance matching by automatic digital impedance synthesizing of an output impedance and all digital filtering functions for an all LSI telephone line circuit including automatic equalizing.
摘要翻译： 描述了可在一个或多个大规模集成电路（LSI）芯片上实现的数字电信线路电路。 提供了一种简化的集成硬件结构，以便实现电子二对四线混合的LSI芯片上的组合，通过输出阻抗的自动数字阻抗合成的线路阻抗匹配以及用于所有LSI电话的所有数字滤波功能 线路电路包括自动均衡。
-
公开(公告)号：US4317962A
公开(公告)日：1982-03-02
申请号：US56752
申请日：1979-07-12
申请人： John E. Cox , Robert Treiber , John M. Cotton
发明人： John E. Cox , Robert Treiber , John M. Cotton
CPC分类号： H04Q11/0407 , H04Q2213/13003 , H04Q2213/13102 , H04Q2213/13103 , H04Q2213/13107
摘要： A uniformly manufacturable solid state modular distributed control for a digitally switched local or central office servicing an expandable number of subscribers is disclosed in which subscriber lines and trunks communicate through a standardized hardware interface to a group switch. The described system provides microprocessor control of each call, with software distributed in accordance with the class of service per line, without the limitations of centralized control systems, but expandable without adverse affect on existing software. Switching control signals are communicated to and from the subscriber subsets to the group switch over the same paths which couple the speech signals thereto, thereby eliminating cumbersome and expensive separate control paths. In accordance with a further aspect of the present invention, subscriber calls are divided into orginating and terminating call halves, under subscriber control and separated by the group switch, thereby eliminating undesired interaction therebetween to provide for simplified software requirements.
摘要翻译： 公开了用于为可扩展数量的订户服务的数字交换的本地或中心局的统一制造的固态模块化分布式控制，其中用户线路和中继线通过标准化的硬件接口通信到组交换机。 所描述的系统提供每个呼叫的微处理器控制，软件根据每行的服务等级分配，而不受集中控制系统的限制，但可扩展而不会对现有软件产生不利影响。 切换控制信号通过与语音信号耦合的相同路径传送到用户子集和从用户子集转移到组交换机，从而消除麻烦和昂贵的分离控制路径。 根据本发明的另一方面，在用户控制下，用户呼叫被划分成最终和终止呼叫半部分，并由组交换机分离，从而消除它们之间的不期望的交互以提供简化的软件需求。
-
公开(公告)号：US4386430A
公开(公告)日：1983-05-31
申请号：US199906
申请日：1980-10-23
申请人： Robert Treiber
发明人： Robert Treiber
CPC分类号： H04L25/03133
摘要： A recursive automatic equalizer is described for implementing the telephone equalization function at a line circuit which may be multiplexed between a plurality of telephone subscriber sets. A recursive digital filter structure having programmable coefficients minimizes the error between the equalizer input and a reference signal. The recursive filter transfer function is variable via feedback coefficient update, with respect to its input and the reference signal. The recursive filter coefficients are adaptively changed to rapidly converge to a final value based upon a mean square error algorithm. The desired filter transfer function can be achieved with a low number of coefficients, for example, five, rather than the heretofore high number of coefficients required in non-recursive filter structures.
摘要翻译： 描述了递归自动均衡器，用于在可以在多个电话用户组之间复用的线路电路上实现电话均衡功能。 具有可编程系数的递归数字滤波器结构使均衡器输入和参考信号之间的误差最小化。 相对于其输入和参考信号，递归滤波器传递函数是通过反馈系数更新而变化的。 递归滤波器系数被自适应地改变以基于均方误差算法快速收敛到最终值。 期望的滤波器传递函数可以用低数量的系数（例如五个）而不是迄今为止在非递归滤波器结构中所需的大量系数来实现。
-
公开(公告)号：US4351060A
公开(公告)日：1982-09-21
申请号：US199904
申请日：1980-10-23
申请人： Robert Treiber
发明人： Robert Treiber
IPC分类号： H03H21/00 , H03H11/28 , H03H11/36 , H03H17/00 , H04B1/58 , H04B3/00 , H04B3/03 , H04B3/14 , H04B3/20 , H04B3/23 , H04L25/03 , H03H17/02
CPC分类号： H04B3/23 , H04B1/586 , H04L2025/03668
摘要： A circuit for automatically digitally synthesizing an output impedance, which may be a matching line terminating impedance, is provided. The means for establishing the desired output impedance characteristic is accomplished using a simplified recursive digital filter arrangement. In addition, means are provided for eliminating the effects of incidental undesirable shunting impedances.
摘要翻译： 提供用于自动数字合成输出阻抗的电路，其可以是匹配线路终端阻抗。 使用简化的递归数字滤波器布置来实现用于建立期望的输出阻抗特性的装置。 此外，提供了用于消除偶然的不期望的分流阻抗的影响的装置。
-
5.发明授权Efficient bidirectional power converter for portable data gathering apparatus 失效用于便携式数据采集设备的高效双向功率转换器
公开(公告)号：US4107596A
公开(公告)日：1978-08-15
申请号：US734693
申请日：1976-10-21
申请人： Daniel J. Weaver , Robert Treiber , Avner Wolanow
发明人： Daniel J. Weaver , Robert Treiber , Avner Wolanow
CPC分类号： H02M3/1582 , G06F1/04
摘要： Input and output switching transistors are alternatively activated to form a charging path and a discharging path for an inductor. The inductor periodically charges through the input transistor from an unregulated rechargeable battery, and discharges through the output transistor into an output capacitor. The output voltage taken across the output capacitor is regulated by negative feedback which varies the inductor charging period through the input transistor. The converter regulation is bidirectional. The voltage from the battery is initially greater than the regulated output voltage, but decreases to a value less than the output voltage as the battery discharges. When the battery is fully charged the converter regulates the battery voltage down to the output voltage. As the battery voltage drops through discharge, the converter regulates the lower battery voltage up to the output voltage. When the output voltage is not required by the data gathering apparatus, the output transistor is deactivated terminating the output voltage and establishing a residual standby mode in the power converter.
摘要翻译： 交替激活输入和输出开关晶体管以形成用于电感器的充电路径和放电路径。 电感器周期性地从未调节的可充电电池对输入晶体管充电，并通过输出晶体管放电成输出电容器。 输出电容器上的输出电压由负反馈调节，负反馈通过输入晶体管改变电感充电周期。 转换器调节是双向的。 来自电池的电压最初大于调节的输出电压，但是随着电池放电而降低到小于输出电压的值。 当电池完全充电时，转换器将电池电压调节到输出电压。 当电池电压通过放电下降时，转换器调节较低的电池电压直到输出电压。 当数据采集装置不需要输出电压时，输出晶体管被停用，终止输出电压并在功率转换器中建立残余待机模式。
-
公开(公告)号：US4161633A
公开(公告)日：1979-07-17
申请号：US903458
申请日：1978-05-08
申请人： Robert Treiber
发明人： Robert Treiber
IPC分类号： H04B3/20 , H04B1/58 , H04B3/23 , H04M1/76 , H04M3/00 , H04Q3/00 , H04Q3/24 , H04Q3/42 , H04Q11/04 , H04M9/08
摘要： A microprocessor controlled subscriber line circuit for interfacing analog telephone lines and trunks to a digital switching system is disclosed. All processing of incoming analog signals is accomplished by the line circuit, including the interface between the line and a digital switching matrix, measuring, monitoring, testing of the signals associated with the speech path. Additionally, the dc signal powering the carbon microphone on the handset is generated as well as ringing and other tones. Equalization and providing the two-wire to four-wire conversion with acceptable echo performance and minimized cross-office transmission loss are also accomplished. Analog-to-digital and digital-to-analog conversions are accomplished under microprocessor control as are the tone and power generation functions in a programmable power supply configuration utilizing pulse duration modulated feedback control in a programmable signal generator. The described subscriber circuit is particularly advantageous in that it is designed to maximize its implementation using solid state circuit techniques including large scale integration as opposed to conventional components and relays.
摘要翻译： 公开了一种用于将模拟电话线和中继线连接到数字交换系统的微处理器控制的用户线电路。 输入模拟信号的所有处理由线路电路完成，包括线路与数字开关矩阵之间的接口，测量，监测，测试与语音路径相关的信号。 另外，产生了手机上的碳麦克风供电的直流信号以及铃声和其他音调。 均衡并提供双线至四线转换，具有可接受的回波性能和最小化的跨部门传输损耗。 在微处理器控制下实现模数转换和数模转换，就可编程电源配置中的音调和发电功能而言，利用可编程信号发生器中的脉冲持续时间调制反馈控制。 描述的用户电路是特别有利的，因为它被设计为使用包括大规模集成的固态电路技术来最大化其实现，而不是常规组件和继电器。
-
7.发明授权Portable data-gathering apparatus formed by modular components having operate-standby modes 失效具有操作模式的模块化组件形成的便携式数据采集设备
公开(公告)号：US4143417A
公开(公告)日：1979-03-06
申请号：US734710
申请日：1976-10-21
CPC分类号： G06F1/263 , G06F3/0232
摘要： A hand-held data-gathering unit is formed by removably connected control and power modules: The control module contains a keyboard, a display device, a data input probe, and a microprocessor. The power module contains a rechargeable battery with a converter and associated power logic, and a memory system with associated memory control logic. The hand-held unit has a normal low-power standby mode which is maintained during the absence of input data from either the keyboard or the data probe, and an operation mode which is initiated by the arrival of input data. During the operation mode, input data enters the control module and is forwarded to the memory in the power module. As data is gathered during portable operation, the memory may reach capacity or the battery voltage may drop, or both. The power module may be removed from the control module and replaced by a fresh power module with a fully charged battery and an empty memory. The expired power module is inserted into a service module for charging the battery or transmitting the data to a remote terminal, or both. The control module may also be inserted into the sevice module where it is activated by a stationary power supply and interfaced with the memory in the power module for stationary operation. In addition to transmitting the contents of the memory, the service module may receive data from the remote terminal and for storage in the memory. This received data may then be accessed and displayed through the control module.
-
公开(公告)号：US4377858A
公开(公告)日：1983-03-22
申请号：US199905
申请日：1980-10-23
申请人： Robert Treiber
发明人： Robert Treiber
摘要： A digital electronic hybrid circuit for a telephone line circuit is described wherein the two-to-four wire conversion function is provided with an improved synthesized automatic impedance match between the telephone subscriber line and the digital central office. More particularly, an impedance at the input to the line circuit is simulated without the use of discrete components and which closely matches the subscriber line impedance. The circuit digitally separates the full duplex signals on a two-wire transmission path to a pair of digital signals.
摘要翻译： 描述了一种用于电话线电路的数字电子混合电路，其中二至四线转换功能在电话用户线和数字中心局之间提供改进的合成自动阻抗匹配。 更具体地，在线路电路的输入处的阻抗被模拟而不使用分立元件并且与用户线阻抗紧密匹配。 该电路将两线传输路径上的全双工信号数字地分离成一对数字信号。
-
公开(公告)号：US4254305A
公开(公告)日：1981-03-03
申请号：US9992
申请日：1979-02-07
申请人： Robert Treiber
发明人： Robert Treiber
CPC分类号： H04M19/008
摘要： The present invention discloses a reduced power dissipation telephone subscriber line feed circuit in which the battery feed current from the central office is determined by the subscriber loop resistance for medium to long loops, and for shorter loops, for which the battery feed current would exceed a given predetermined threshold, the feed current is limited to the threshold value. The invention also relates to compensation for loop and subset attenuation characteristics.During operation in the current limited mode, attenuation is automatically inserted into the signal transmission and receiving paths in order that normal equalizer operation will not be impaired by current limiting of the battery feed current. A multiple telephone subscriber system is disclosed wherein the circuitry used in deriving current limiting control signals is shared in a multiplexed arrangement by a plurality of subscriber lines. Line feed current is limited in discrete steps to a predetermined threshold value in each subscriber loop upon the detection of an OFF HOOK condition when the feed current drawn by the subset exceeds the threshold value. A plurality of discrete signals are derived by sensing the amount by which the line voltages exceeds a predetermined selected reference voltage value. These discrete signals are used to determine both the effective battery voltage which will produce a d.c. feed current corresponding to the limiting value and the amount of attenuation to be added at the central office by the line circuit to compensate for the equalizer effect in the subscriber set which occurs as a result of the current limiting.
摘要翻译： 本发明公开了一种降低功耗的电话用户线路馈电电路，其中来自中心局的电池馈电电流由用于中长环路的用户回路电阻以及电池馈电电流将超过 给定预定阈值时，馈送电流被限制到阈值。 本发明还涉及对环路和子集衰减特性的补偿。 在当前限制模式下工作时，衰减自动插入到信号传输和接收路径中，以便通过限制电池馈电电流不会损害正常的均衡器操作。 公开了一种多电话用户系统，其中用于导出电流限制控制信号的电路由多个用户线以多路复用的方式共享。 当由子集抽取的馈送电流超过阈值时，在检测到OFF HOOK条件时，线路馈电电流以离散步长限制到每个用户环路中的预定阈值。 通过感测线电压超过预定的选定参考电压值的量导出多个离散信号。 这些离散信号用于确定将产生直流电压的有效电池电压。 馈送电流对应于由线路电路在中心局添加的限制值和衰减量，以补偿由于电流限制而发生的用户组中的均衡器效应。
-
10.发明授权Data-gathering device for scanning data having a variable amplitude modulation and signal to noise ratio 失效用于扫描具有可变幅度调制和信噪比的数据的数据采集装置
公开(公告)号：US4101072A
公开(公告)日：1978-07-18
申请号：US734694
申请日：1976-10-21
CPC分类号： G06K7/10851 , G06K7/10881 , G06K2207/1018
摘要： A light pen is scanned across a bar coded label to produce a reflected light signal having a modulated intensity. The average peak-to-peak value of the plus and minus peaks of the return signal is continuously generated to provide a reference for detecting each subsequent positive and negative transistion. The instantaneous average peak-to-peak reference permits the positive transistions to be distinguished from the negative transistions in spite of large deviations in the amplitude modulation and large shifts in the signal to ambient light level ratio of the return signal. Initially the light pen is operated in a low power pulsed mode. The initial transistions in the return signal cause the pen to temporarily illuminate the bar coded label with a continuous light, and activate plus and minus peak detectors.
摘要翻译： 将光笔在条形码标签上扫描以产生具有调制强度的反射光信号。 连续产生返回信号的正和负峰值的平均峰 - 峰值，以提供用于检测每个随后的正和负转移的参考。 瞬时平均峰 - 峰参考允许将正转移与负转移区分开，尽管幅度调制的偏差较大，信号与信号对环境光水平比的返回信号的大偏移。 最初，光笔以低功率脉冲模式工作。 返回信号中的初始转移使笔用连续的光暂时照亮条形编码标签，并激活正负峰值检测器。
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.015 秒)
