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1. 发明授权

US5521919A Method and apparatus for providing switch-based features 失效
标题翻译：用于提供基于开关的特征的方法和装置
公开(公告)号：US5521919A
公开(公告)日：1996-05-28
申请号：US334308
申请日：1994-11-04
申请人： Thomas W. Anderson , Thomas E. Bowers , Charles C. Byers
发明人： Thomas W. Anderson , Thomas E. Bowers , Charles C. Byers
IPC分类号： H04M3/00 , H04M3/40 , H04Q11/04 , H04Q11/08
CPC分类号： H04M3/002 , H04M3/40 , H04Q11/04
摘要： A system and method to provide voice enhancement circuits on a voice path on an individual basis, without having in-line circuits inserted into the lines or trunks. The enhancement circuit is inserted within one or more of the switches. This system comprises a switching system having a switching fabric and a central control, wherein the switching fabric includes several extended time slot interchange (XTSI) units connected to a time multiplex switch. The extended time slot interchange unit has approximately twice the capacity of a standard time slot interchange unit. Such XTSI is connected to voice enhancing circuits, which the TSI may then switch enhancement circuits into a call path. A method of setting up a call according to this invention includes routing the call to a switch, routing the call in the switch into an XTSI, which routes a call through the enhancement circuit, and then back through the XTSI.
摘要翻译：在单独的语音路径上提供语音增强电路的系统和方法，而不会将线内电路插入到线路或中继线中。增强电路插入在一个或多个开关内。该系统包括具有交换结构和中央控制的交换系统，其中交换结构包括连接到时间复用交换机的几个扩展时隙交换（XTSI）单元。扩展时隙交换单元具有标准时隙交换单元容量的大约两倍。这样的XTSI连接到语音增强电路，TSI然后可以将增强电路切换成呼叫路径。根据本发明的建立呼叫的方法包括将呼叫路由到交换机，将交换机中的呼叫路由到XTSI，其通过增强电路路由呼叫，然后通过XTSI返回。

2. 发明授权

US4704716A Method and apparatus for establishing a wideband communication facility through a communication network having narrow bandwidth channels 失效
标题翻译：通过具有窄带宽信道的通信网络建立宽带通信设施的方法和装置
公开(公告)号：US4704716A
公开(公告)日：1987-11-03
申请号：US815400
申请日：1985-12-31
申请人： Thomas E. Bowers , Alan E. Frey , Howard A. Kerr , Larry A. Russell , Roger E. Stone
发明人： Thomas E. Bowers , Alan E. Frey , Howard A. Kerr , Larry A. Russell , Roger E. Stone
IPC分类号： H04L12/64 , H04Q11/04 , H04J3/16 , H04J3/22
CPC分类号： H04Q11/04
摘要： A wideband communication facility is established via a switched network between calling and called terminals. The wideband facility comprises a number of segments, each segment including a plurality of narrowband time division multiplex channels having a total bandwidth at least equal to the bandwidth of the wideband facility. A switching system of the network interconnects the wideband facility segments and assembles all the data received in a given time frame from one segment into the single time frame for transmission to another facility segment. Additional buffer memories are added to the initial and final stages of a time-space-time switching network to insure that all the data received in one time frame from a given facility segment is assembled only into the same time farme for transmission on an outgoing facility segment.
摘要翻译：通过呼叫和被叫终端之间的交换网络建立宽带通信设施。宽带设施包括多个段，每个段包括多个窄带时分复用信道，其总带宽至少等于宽带设施的带宽。网络的交换系统将宽带设施段互连，并将在给定时间帧中接收的所有数据从一个段组装成单个时间帧，以便传输到另一个设施段。额外的缓冲存储器被添加到时间 - 空间 - 时间交换网络的初始阶段和最后阶段，以确保从给定的设施段在一个时间帧中接收的所有数据仅被组装在相同的时间段中以便在输出设备上传输分割。

3. 发明授权

US4885738A Method of and apparatus for establishing a wideband communication facility through a switched communications network having narrow bandwidth time division multiplexed channels 失效
标题翻译：通过具有窄带宽时分复用信道的交换通信网建立宽带通信设施的方法和装置
公开(公告)号：US4885738A
公开(公告)日：1989-12-05
申请号：US80712
申请日：1987-07-31
申请人： Thomas E. Bowers , Alan E. Frey , Howard A. Kerr , Larry A. Russell , Roger E. Stone
发明人： Thomas E. Bowers , Alan E. Frey , Howard A. Kerr , Larry A. Russell , Roger E. Stone
IPC分类号： H04Q11/04
CPC分类号： H04Q11/04
摘要： Method and apparatus are disclosed for establishing a wideband communication facility from a plurality of narrow bandwidth channels through a switched communications network from a first to a second terminal in response to a call from the first terminal indicating a customer-selected bandwidth for the wideband facility. Apparatus is also disclosed for establishing a wideband communication path through an illustrative switching system interconnecting groups of narrowband time division multiplexed channels established for the wideband facility. The path has a bandwidth greater than any of the TDM channels. Additional buffer memories and memory control arrangements are added to the initial and final stages of a time-space-time switching network to prevent any of the time slot data of a given time frame from being delayed and included in another time frame.
摘要翻译：公开的方法和装置用于响应于来自第一终端的来自宽带设施的用户选择的带宽的呼叫，从多个窄带宽信道通过交换通信网络从第一终端建立到宽带通信设备。还公开了用于通过互连针对宽带设施建立的窄带时分复用信道组的说明性交换系统建立宽带通信路径的装置。该路径的带宽大于任何TDM信道。附加的缓冲存储器和存储器控制装置被添加到时空交换网络的初始阶段和最后阶段，以防止给定时间帧的任何时隙数据被延迟并包括在另一个时间帧中。

4. 发明授权

US4222013A Phase locked loop for deriving clock signal from aperiodic data signal 失效
标题翻译：用于从非周期性数据信号中导出时钟信号的锁相环
公开(公告)号：US4222013A
公开(公告)日：1980-09-09
申请号：US963270
申请日：1978-11-24
申请人： Thomas E. Bowers , Dennis E. Tomlinson
发明人： Thomas E. Bowers , Dennis E. Tomlinson
IPC分类号： H03L7/089 , H04L7/033 , H03B3/04
CPC分类号： H04L7/033 , H03L7/089
摘要： A phase locked loop circuit (100) for generating a periodic clock signal from a controlled oscillator circuit (130) in phase coincidence with a synchronous aperiodic data input signal is disclosed. A pulse of the data signal and a corresponding pulse of the clock signal are applied to a bistable circuit (FF1) having an output signal indicating which of the pulses occurs first in time. The pulses are further applied through delay circuitry (DLY1, DLY2) to another bistable circuit (FF2) having an output signal indicative of the magnitude of phase difference between the pulses. The output signals of the bistable circuits (FF1, FF2) are applied to a multilevel driver circuit (140) which generates an error correction signal pulse defining magnitude and direction of a correction signal to be applied to the oscillator circuit (130).
摘要翻译：公开了一种用于从受控振荡器电路（130）产生与同步非周期数据输入信号相位一致的周期性时钟信号的锁相环电路（100）。数据信号的脉冲和时钟信号的对应脉冲被施加到具有指示在时间上首先发生哪些脉冲的输出信号的双稳态电路（FF1）。脉冲进一步通过延迟电路（DLY1，DLY2）施加到具有指示脉冲之间的相位差大小的输出信号的另一双稳态电路（FF2）。双稳态电路（FF1，FF2）的输出信号被施加到多电平驱动电路（140），该电平产生纠正信号脉冲，该纠错信号脉冲定义要施加到振荡电路（130）的校正信号的幅度和方向。

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