公开(公告)号：US5771232A

公开(公告)日：1998-06-23

申请号：US518215

申请日：1995-08-23

申请人： John Claude Sinibaldi ,  Baiju Dhirajlal Mandalia ,  Gordon Taylor Davis ,  Lawrence Paul Andrews ,  Robert Eugene Landa ,  Joe Fletcher Jones, Jr. ,  Willie James Johnson

发明人： John Claude Sinibaldi ,  Baiju Dhirajlal Mandalia ,  Gordon Taylor Davis ,  Lawrence Paul Andrews ,  Robert Eugene Landa ,  Joe Fletcher Jones, Jr. ,  Willie James Johnson

IPC分类号： G06F13/00 ,  H04J3/12 ,  H04J3/16 ,  H04L29/06 ,  H04L12/02

CPC分类号： H04L29/06 ,  H04J3/12 ,  H04J3/1641

摘要： In an communication system including a computer system comprising a digital signal processing adapter for performing a-set of tasks, and a E-1 port for providing and receiving time division multiplexed (TDM) signals in accordance with a first inter-system communication protocol, such as the E-1 or T-1 protocols, a communication subsystem, for coupling to the IP system. The communication subsystem includes an E-1 link for coupling to the first I/O port, and for providing and receiving TDM signals in accordance with the E-1 or T-1 protocols. The subsystem further includes a digital signal processor adapter, coupled to the second I/O port, for enhancing processing capability of the digital signal processing resource; and a third I/O port, coupled to the digital signal processor circuit, for providing and receiving signals in accordance with the first or a second inter-system communication protocol.

摘要翻译： 在包括计算机系统的通信系统中，包括用于执行一组任务的数字信号处理适配器和根据第一系统间通信协议提供和接收时分多路复用（TDM）信号的E-1端口， 例如E-1或T-1协议，用于耦合到IP系统的通信子系统。 通信子系统包括用于耦合到第一I / O端口的E-1链路，以及用于根据E-1或T-1协议提供和接收TDM信号。 子系统还包括耦合到第二I / O端口的数字信号处理器适配器，用于增强数字信号处理资源的处理能力; 以及耦合到所述数字信号处理器电路的第三I / O端口，用于根据所述第一或第二系统间通信协议提供和接收信号。

公开(公告)号：US3939579A

公开(公告)日：1976-02-24

申请号：US429308

申请日：1973-12-28

申请人： Lawrence Paul Andrews ,  Raymond Graham Fox ,  Clayton Potter Ludeman ,  Thomas Wilbur Rounds, Jr. ,  Victor Anthony Scuderi ,  Douglas Howard Strait

发明人： Lawrence Paul Andrews ,  Raymond Graham Fox ,  Clayton Potter Ludeman ,  Thomas Wilbur Rounds, Jr. ,  Victor Anthony Scuderi ,  Douglas Howard Strait

IPC分类号： G11B27/34 ,  G09B7/04

CPC分类号： G09B7/04

摘要： This disclosure is for an Audio-Visual training device having both a projectable film tape and an audio tape with control indicia on the audio tape in addition to recorded audio messages. The tape indicia are used to control a small processor which governs both tape and film movement. A keyboard on the device is used to enter replies to queries to a user from the tape and film and the processor will determine both tape and film movement in response to the answer to a query. The system is capable of multiway branching to present to the viewer the proper information pertaining to his answer. Several counters are available to count trials, correct or incorrect responses, etc., and to control tape and film movement in accordance with the counter readings. A proctor light may be turned on to call for personal assistance and to lock up the machine when a student is in trouble and the program does not have the proper branch to clear up the difficulty.

摘要翻译： 本公开是一种视听训练装置，除了记录的音频消息之外，还具有可投影胶片磁带和在音频磁带上具有控制标记的音频磁带。 磁带标记用于控制控制磁带和胶片移动的小型处理器。 设备上的键盘用于从磁带和胶片输入对用户的查询回复，并且响应于查询的答案，处理器将确定磁带和电影的移动。 该系统能够进行多路分支以向观看者呈现与他的答案有关的适当信息。 有几个计数器可用于计数试验，正确或不正确的响应等，并根据计数器读数控制胶带和胶片的移动。 当学生遇到麻烦，程序没有适当的分支来清除困难时，可以打开监护员灯来呼叫个人协助并锁定机器。

公开(公告)号：US5883925A

公开(公告)日：1999-03-16

申请号：US559000

申请日：1995-11-16

申请人： John Claude Sinibaldi ,  Baiju Dhirajlal Mandalia ,  William Robert Robinson, Jr. ,  Lawrence Paul Andrews

发明人： John Claude Sinibaldi ,  Baiju Dhirajlal Mandalia ,  William Robert Robinson, Jr. ,  Lawrence Paul Andrews

IPC分类号： H04B1/66

CPC分类号： H04B1/66

摘要： A pulse code modulation (PCM) unit is connected to a bus in a computer system. Also, connected to the bus is a processor and memory. The PCM unit is connected to transmit and receive telephone lines. The PCM unit reads uncompressed PCM data from the memory over the bus and compresses the PCM data for transmission over the telephone line in a cycle steal operation, wherein the bus is not being used by the processor. The PCM receives compressed PCM data from the receive telephone line, decompresses it, and writes the decompressed PCM data to the memory in a cycle steal operation. In addition, selectivity of either .mu.-Law or A-Law conversion, selectivity of even bit inversion for A-Law conversion, and selectivity between the compressed/decompressed PCM data or raw data is provided on a per channel basis. Selectable linear gain is also provided.

摘要翻译： 脉冲编码调制（PCM）单元连接到计算机系统中的总线。 此外，连接到总线是一个处理器和内存。 PCM单元连接到发送和接收电话线。 PCM单元通过总线从存储器读取未压缩的PCM数据，并且在循环窃取操作中压缩PCM数据以在电话线路上传输，其中总线未被处理器使用。 PCM从接收电话线接收压缩的PCM数据，对其进行解压缩，并在循环窃取操作中将解压缩的PCM数据写入存储器。 此外，基于每个通道，提供了mu -Law或A-Law转换的选择性，用于A律转换的偶位反转的选择性以及压缩/解压缩的PCM数据或原始数据之间的选择性。 还提供可选择的线性增益。