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1. 发明授权

US5309426A High performance cascadable simplex switch 失效
标题翻译：高性能级联单工开关
公开(公告)号：US5309426A
公开(公告)日：1994-05-03
申请号：US8925
申请日：1993-01-26
申请人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
发明人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
IPC分类号： G06F15/173 , H04L12/44 , H04L12/56 , H04Q3/52 , H04Q1/00
CPC分类号： H04L49/351 , H04L2012/445 , H04L49/101 , H04L49/3018 , H04L49/3027
摘要： A serial simplex switch design is provided which includes I/O ports each of which is configurable specifically for attachment to a data communications subsystem or, alternatively, for cascaded connection to a similarly configured I/O port on another switch. The switch provides a packet routing function including input and output buffers for each of its I/O ports wherein packets of control messages sent by one subsystem are temporarily stored prior to being delivered to the appropriate destination subsystem. When configured to be directly attached to a subsystem, the I/O ports separate control messages from incoming integrated data and control message strings. In a cascade configuration, however, a mechanism is provided wherein data and control messages are separated into two physical paths to eliminate the delays associated with integrated data and control message flow through the cascaded I/O port. Each I/O port is configurable to either of these methods of operation by means of programmable latches associated with the I/O port.
摘要翻译：提供了一种串行单工开关设计，其包括I / O端口，每个I / O端口可专门配置用于连接到数据通信子系统，或者替代地，用于与另一开关上类似配置的I / O端口的级联连接。交换机提供分组路由功能，其包括其I / O端口中的每一个的输入和输出缓冲器，其中由一个子系统发送的控制消息的分组在被传送到适当的目的地子系统之前临时存储。当配置为直接连接到子系统时，I / O端口将控制消息与传入的集成数据和控制消息字符串分开。然而，在级联配置中，提供了一种机制，其中数据和控制消息被分成两个物理路径，以消除与集成数据相关联的延迟和通过级联I / O端口的控制消息流。通过与I / O端口相关联的可编程锁存器，每个I / O端口可配置为这些操作方法之一。

2. 发明授权

US5493651A Method and system for dequeuing connection requests in a simplex switch 失效
标题翻译：在单工交换机中出现连接请求的方法和系统
公开(公告)号：US5493651A
公开(公告)日：1996-02-20
申请号：US017548
申请日：1993-02-16
申请人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
发明人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
IPC分类号： G06F13/40 , G06F15/173 , H04L12/50 , G06F15/16 , G06F9/30 , G06F13/14 , H04Q11/04
CPC分类号： G06F15/17375 , G06F13/4022 , H04L12/50
摘要： A system and method is provided for dequeuing connection requests in a data communications system comprising a calling subsystem and a called subsystem connected by a serial simplex switch. The connection requests are made by the calling subsystem to the called subsystem by sending a connect request message to the switch and queuing the connect request message in a buffer therein. The switch establishes a connection between the calling subsystem and the called subsystem by thereafter queuing the connect request message in a buffer in the called subsystem. Concurrently, the switch sends a connect request acknowledge message to the calling subsystem while the calling subsystem sends a connect request dequeue message to the switch. To prevent loss of synchronization between the calling subsystem and the switch, the connect request dequeue message received by the switch is interpreted as a disconnect request message and the connect request acknowledge message received by the calling subsystem is interpreted as a connect request dequeue acknowledge message. The connect request dequeue message and the disconnect request message are identically serially encoded, as are the connect request acknowledge message and the connect request dequeue acknowledge message, to enable such interpretation.
摘要翻译：提供了一种系统和方法，用于在包括由串行单工交换机连接的调用子系统和被叫子系统的数据通信系统中出列连接请求。通过向交换机发送连接请求消息并将连接请求消息排队在其中的缓冲器中，由呼叫子系统向被叫子系统进行连接请求。交换机之后通过在被叫子系统的缓冲区中排队连接请求消息来建立呼叫子系统和被叫子系统之间的连接。同时，交换机向呼叫子系统发送连接请求确认消息，而主叫子系统向交换机发送连接请求出队消息。为了防止主叫子系统和交换机之间的同步丢失，交换机接收到的连接请求出队消息被解释为断开请求消息，由呼叫子系统接收到的连接请求确认消息被解释为连接请求出队确认消息。连接请求出局消息和断开请求消息被同样地串行编码，连接请求确认消息和连接请求出队确认消息也是如此，以实现这种解释。

3. 发明授权

US5317565A Method of sequencing bus operations in a simplex switch 失效
标题翻译：在单工交换机中对总线操作进行排序的方法
公开(公告)号：US5317565A
公开(公告)日：1994-05-31
申请号：US9602
申请日：1993-01-26
申请人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
发明人： Richard S. Crouse , John J. Cazzolla , Luke L. Chang , Marco M. Hurtado , Kha D. Nguyen , Jose L. Rivero , Jose J. Ruiz , Louis Salcedo
IPC分类号： H04L12/64 , H04L12/44 , H04L12/50 , H04L12/56 , H04Q11/04
CPC分类号： H04L49/107 , H04L12/50 , H04L49/101 , H04L49/106 , H04L49/255 , H04Q11/0478 , H04J2203/0005 , H04L2012/445 , H04L49/205 , H04L49/351
摘要： A sequencing scheme is provided for prioritizing bus operations occurring in simplex switches which interconnect subsystems in a data communications system, thereby yielding improved aggregate system data throughput. The sequencing scheme provides procedures which simultaneously accommodate (i) concurrently pending requests to a first control bus which processes only circuit switched operations and (ii) concurrently pending requests to a second control bus which processes only packet switched operations, in an order which optimizes link level control message throughput of the simplex switch. The control messages which are coordinated by the sequencing scheme include connect and disconnect requests, connect and disconnect request acknowledgments, and data acknowledgments. All connect request and disconnect requests are managed by a connection processing (CP) bus, which operates as a circuit switching bus, and all data acknowledgments and connect request acknowledgments from subsystems attached to a cascaded switch are made over an out-of-band (OB) bus, which operates as a packet switching bus. Because connect and disconnect operations over the CP bus can proceed independently of acknowledgment operations over the OB bus, the sequencing procedures for each of the control buses are permitted to operate independently and simultaneously.
摘要翻译：提供了一种排序方案，用于对在单向开关中发生的总线操作进行优先级排序，这些交换机将数据通信系统中的子系统互连，从而产生改进的聚合系统数据吞吐量。排序方案提供了同时适应（i）同时处理的请求到仅处理电路交换操作的第一控制总线的步骤，以及（ii）以仅处理分组交换操作的第二控制总线的同时待决请求，其优化链接单工交换机的级别控制消息吞吐量。由排序方案协调的控制消息包括连接和断开请求，连接和断开请求确认以及数据确认。所有连接请求和断开请求由连接处理（CP）总线管理，连接处理（CP）总线作为电路交换总线工作，所有数据确认和连接到级联交换机的子系统的请求确认通过带外（ OB）总线，作为分组交换总线工作。因为通过CP总线的连接和断开操作可以独立于通过OB总线的确认操作进行，所以允许每个控制总线的排序程序独立且同时地进行操作。

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