公开(公告)号：US4682325A

公开(公告)日：1987-07-21

申请号：US686579

申请日：1984-12-27

申请人： George Heys, Jr. ,  Rex A. Aleshire ,  Frank Hines ,  William M. Belknap

发明人： George Heys, Jr. ,  Rex A. Aleshire ,  Frank Hines ,  William M. Belknap

IPC分类号： H03H7/38 ,  G06F13/40 ,  H03H7/48 ,  H04B3/02 ,  H04L12/40 ,  H04L25/02 ,  H04M9/02 ,  H04J3/02

CPC分类号： H04L12/40039 ,  G06F13/4086 ,  H03H7/482 ,  H04L12/40 ,  H04M9/025

摘要： A system is disclosed for selectively serially coupling a plurality of stations in a communications network into a single communications path. In the system of the invention, a plurality of tap boxes are serially coupled into the single communications path. Each station is coupled to a desired associated one of the tap boxes by way of an associated tap cable. When the tap cable is connected to a first portion of the tap box, a first impedance corresponding to the characteristic impedance of the single communications path is serially coupled into the single communications path to enable the station associated with the tap cable to be coupled to the single communications path by way of the first impedance. When the tap cable is connected to a second portion of the tap box, the first impedance is effectively removed from the single communications path and a test impedance is coupled to the tap cable to enable the station associated with the tap cable to test itself. In a first embodiment, the first and second portions of the tap box are respectively the tip and ring contacts of a stereo jack. In a second embodiment, the first and second portions of the tap box are separate audio jacks. In each embodiment, a connection means, such as a monaural plug, is connected to the end of each tap cable and is used to selectively couple the tap cable to either of the first and second portions of a desired tap box.

摘要翻译： 公开了一种用于选择性地将通信网络中的多个站点串联耦合到单个通信路径的系统。 在本发明的系统中，多个抽头盒串联耦合到单个通信路径中。 每个站通过相关联的分接电缆耦合到所需的相关联的抽头箱中的一个。 当抽头电缆连接到抽头盒的第一部分时，对应于单个通信路径的特征阻抗的第一阻抗被串联耦合到单个通信路径中，以使与抽头电缆相关联的站能够耦合到 通过第一阻抗的单个通信路径。 当抽头电缆连接到抽头盒的第二部分时，第一阻抗有效地从单个通信路径移除，并且测试阻抗耦合到抽头电缆，以使与抽头电缆相关联的站可以测试自身。 在第一实施例中，抽屉箱的第一和第二部分分别是立体声插座的尖端和环形触点。 在第二实施例中，抽头盒的第一和第二部分是独立的音频插孔。 在每个实施例中，诸如单声道插头的连接装置连接到每个分接电缆的端部，并且用于选择性地将抽头电缆耦合到所需抽头盒的第一和第二部分中的任一个。

公开(公告)号：US4730250A

公开(公告)日：1988-03-08

申请号：US772226

申请日：1985-09-03

申请人： Donald J. Girard ,  Frank Hines

发明人： Donald J. Girard ,  Frank Hines

IPC分类号： G06F13/364 ,  H04L12/413 ,  G06F15/16 ,  H04J3/02 ,  H04Q9/00

CPC分类号： H04L12/40013 ,  G06F13/364 ,  H04L12/413

摘要： A data processing system in which a host processor is connected to a plurality of remote processing devices over a common communication channel in which a number of the remote processors are commonly connected to a transceiver for transmitting and receiving data over the communication channel. Switching members on each of the remote processing devices select a pair of communication lines coupled to a priority resolving circuit for transmitting request to send signals and receiving clear to send signals, thereby enabling the remote processing devices to transmit and receive data over the communication channel.

摘要翻译： 一种数据处理系统，其中主处理器通过公共通信信道连接到多个远程处理设备，其中多个远程处理器通常连接到收发器，用于通过通信信道发送和接收数据。 每个远程处理设备上的交换构件选择耦合到优先级分辨率电路的一对通信线路，用于发送发送信号的请求并接收清除发送信号，从而使远程处理设备能够通过通信信道发送和接收数据。

公开(公告)号：US4669044A

公开(公告)日：1987-05-26

申请号：US627310

申请日：1984-07-02

申请人： James S. Houser ,  Frank Hines

发明人： James S. Houser ,  Frank Hines

IPC分类号： G06F15/16 ,  G06F13/36 ,  G06F15/167 ,  G06F15/173 ,  G06F3/04

CPC分类号： G06F15/167

摘要： A method and apparatus for transferring data between two data processors includes transferring a data byte from the first processor to a latch member, setting a flip-flop circuit which generates an interrupt signal to the second processor enabling the second processor to transfer the data byte from the latch member to a RAM memory unit associated with the second processor. The second processor resets the flip-flop circuit which outputs a signal to the first processor enabling the first processor to transfer another data byte to the latch member. Steering address bits associated with each of the processors are used to provide control signals to select the storage member in which the data bytes are to be transferred. A second flip-flop circuit associated with the second processor allows the second processor to transfer data to the first processor in the same manner.

摘要翻译： 一种用于在两个数据处理器之间传送数据的方法和装置包括将数据字节从第一处理器传送到锁存器件，设置产生中断信号的触发器电路给第二处理器，使得第二处理器能够将数据字节从 所述闩锁构件连接到与所述第二处理器相关联的RAM存储器单元。 第二处理器复位触发器电路，其向第一处理器输出信号，使得第一处理器能够将另一数据字节传送到锁存器。 与每个处理器相关联的转向地址位用于提供控制信号以选择要传送数据字节的存储器件。 与第二处理器相关联的第二触发器电路允许第二处理器以相同的方式将数据传送到第一处理器。