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1. 发明授权

US4627050A Time division multiplexed computerized branch exchange 失效
标题翻译：时分复用电脑化交换机
公开(公告)号：US4627050A
公开(公告)日：1986-12-02
申请号：US613026
申请日：1984-05-22
申请人： Howard W. Johnson , Michael G. Duncan , Rod G. Sinks , John D. Edwards , Martin H. Graham , James M. Kasson , Charles M. Corbalis
发明人： Howard W. Johnson , Michael G. Duncan , Rod G. Sinks , John D. Edwards , Martin H. Graham , James M. Kasson , Charles M. Corbalis
IPC分类号： H04Q3/545 , H04J3/00 , H04L12/40 , H04Q11/04 , H04J3/02 , H04J3/16
CPC分类号： H04L12/4035 , H04L12/40013 , H04Q11/04
摘要： An improved architecture for a computerized branch exchange particularly for a time division multiplexed bus used in the exchange. An intershelf bus includes a unidirectional source bus which receives signals from expanders and a unidirectional destination bus which transmits signals to the expanders. The expanders, through another bus, communicate with line cards which interface with telephone station sets, commercial lines, etc. A time division multiplexed controller updates distributed connection tables contained in each of the expanders and controls the flow of data onto and from the unidirectional buses. The distributed connection tables eliminate the need to broadcast addresses during each time slot. The arrangement is particularly useful in reducing blocking associated with prior art bidirectional buses.
摘要翻译：用于计算机化分支交换的改进的架构，特别是用于交换中使用的时分复用总线。机间总线包括从扩展器接收信号的单向源总线和向扩展器发送信号的单向目的地总线。扩展器通过另一个总线与与电话台组，商业线路等接口的线路卡通信。时分复用控制器更新包含在每个扩展器中的分布式连接表，并且控制数据到单向总线和从单向总线。分布式连接表消除了在每个时隙期间广播地址的需要。该装置在减少与现有技术的双向总线相关联的阻塞方面特别有用。

2. 发明授权

US4313036A Distributed CBX system employing packet network 失效
标题翻译：分布式CBX系统采用分组网络
公开(公告)号：US4313036A
公开(公告)日：1982-01-26
申请号：US122415
申请日：1980-02-19
申请人： Michael D. Jabara , Charles H. Jolissaint , David Lieberman , John D. Edwards
发明人： Michael D. Jabara , Charles H. Jolissaint , David Lieberman , John D. Edwards
IPC分类号： H04M3/00 , H04M7/00 , H04M7/06 , H04Q11/04
CPC分类号： H04Q11/04 , H04M7/009 , H04M7/1255 , H04Q2213/1313 , H04Q2213/1322 , H04Q2213/13296 , H04Q2213/13384 , Y10S379/901
摘要： A distributed CBX system which provides a virtual network between remotely located CBXs is disclosed. The CBXs are connected to both a voice network and a packet network. A first CBX may interrogate a second CBX to determine, by way of example, the status of a called station at the second CBX over the packet network. The second CBX not only provides the status of the called station but also provides, if the called station is clear, the number of a free incoming line at the second CBX. In this manner, the first CBX can place a call to both an available line and station at the second CBX. Alternatively, because of facility availability or tariff structures, the call may be originated over common carrier facilities in the reverse direction originating over common carrier facilities from the called party end.
摘要翻译：公开了一种分布式CBX系统，其提供了位于远程CBX之间的虚拟网络。 CBX连接到语音网络和分组网络。第一CBX可以询问第二CBX以通过示例方式通过分组网络来确定被呼叫站在第二CBX处的状态。第二CBX不仅提供被叫站的状态，而且如果被叫站清楚，则还提供在第二CBX处的空闲传入线的号码。以这种方式，第一CBX可以在第二CBX处呼叫可用的线路和站。或者，由于设施可用性或资费结构，呼叫可以在通过公共运营商设备从被叫方端发起的相反方向上的公共运营商设施上发起。

3. 发明授权

US4717305A Self-service apparatus 失效
标题翻译：自助设备
公开(公告)号：US4717305A
公开(公告)日：1988-01-05
申请号：US905480
申请日：1986-09-08
申请人： John D. Edwards
发明人： John D. Edwards
IPC分类号： A47G25/14 , B65G1/04
CPC分类号： B65G1/0457 , A47G25/1442
摘要： A self-service apparatus for the delivery of sheet-like articles, such as garments, comprises at least two parallel rails having notches defining a plurality of locations at each of which can be stored an article on a hanger ready to be delivered to a customer. In response to an authorized request by a customer, a carriage is driven along the rails for picking up and conveying an article from any specific location to a reception region at which the article can be received by the customer. The apparatus also includes a control device which is actuated as a selected article is picked-up by the carriage so as to rotate the article from its storage position to a position at which it is held edgewise-on as it is conveyed towards the reception region.
摘要翻译：用于递送诸如衣服的片状物品的自助服务设备包括至少两个平行的轨道，其具有限定多个位置的凹口，每个位置可以将物品存储在衣架上，准备交付给客户。响应于客户的授权请求，沿着轨道驱动托架，用于拾取并将物品从任何特定位置传送到可由客户接收物品的接收区域。该装置还包括一个控制装置，当所选择的物品被托架拾起时，该装置被致动，以便使物品从其存放位置旋转到当其朝向接收区域传送时沿其保持沿着方向的位置。

4. 发明授权

US3985966A Method and apparatus for generating digital dual frequency signals 失效
标题翻译：用于产生数字双频信号的方法和装置
公开(公告)号：US3985966A
公开(公告)日：1976-10-12
申请号：US598291
申请日：1975-07-23
申请人： John D. Edwards
发明人： John D. Edwards
IPC分类号： H04Q1/45 , G06F1/02 , H03B28/00 , H04M1/50 , H04Q1/457 , H04J3/00 , H03B19/00
CPC分类号： H04M1/505 , H04Q1/4575
摘要： A dual tone multiple frequency digital tone generator for a PCM/TDM electronic telephone system. A digital representation of a dual tone signal is generated from a multi-bit command character by determining the phase angle of two frequencies specified by the command character relative to an independent time reference signal, converting paired phase angles to amplitude signals representative of the amplitude of a sine wave having each calculated phase angle, and summing the amplitude representations to generate a value corresponding to the digital representation of the frequency pair at that particular instant. Individual phase angles are calculated by generating a multi-bit digital character corresponding to the phase angle of a sinusoidal reference signal of the particular frequency. This character is preferably generated by multiplying a multi-bit digital character having n-bits representing the fractional part of the number of seconds elapsed from some reference time by a multi-bit digital character having m bits representing the frequency of the sinusoidal signal, m and n both integers. The resulting m + n bit product consisting of an m-bit integral part and an n-bit fractional part is examined and the p most significant bits to the right of the decimal point are selected, p being an integer. The value of n determines the accuracy of the product relative to the absolute value of the phase angle, while the value of p determines the resolution of the phase angle representation. Both n and p are preselected in accordance with the required accuracy of the frequency representation.
摘要翻译：用于PCM / TDM电子电话系统的双音多频数字音频发生器。通过确定由命令字符相对于独立的时间参考信号指定的两个频率的相位角，从多位命令字符生成双音信号的数字表示，将成对的相位角转换成代表幅度信号的振幅信号具有每个计算出的相位角的正弦波，并对振幅表示求和以产生对应于该特定时刻的频率对的数字表示的值。通过产生与特定频率的正弦参考信号的相位角对应的多位数字字符来计算单个相位角。该字符优选地通过将具有表示来自某个参考时间的经过的秒数的小数部分的n位的多位数字字符乘以具有表示正弦信号的频率的m位的多比特数字字符和n两个整数。检查由m位积分部分和n位分数部分组成的最终m + n位乘积，并选择小数点右侧的p个最高有效位，p为整数。 n的值确定乘积相对于相位角的绝对值的精度，而p的值确定相位角表示的分辨率。 n和p都是根据频率表示所要求的精度来预选的。

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