公开(公告)号：US4577314A

公开(公告)日：1986-03-18

申请号：US481057

申请日：1983-03-31

申请人： Jean Chu ,  Mark G. Hinch ,  James M. Johnson, Jr. ,  Henry J. Kafka ,  David J. Stelte

发明人： Jean Chu ,  Mark G. Hinch ,  James M. Johnson, Jr. ,  Henry J. Kafka ,  David J. Stelte

IPC分类号： H04L29/06 ,  H04L11/20

CPC分类号： H04L29/06

摘要： A communication method and digital multi-customer data interface for interconnecting a number of customer terminals to a main packet switching network of a local area data transport system that provides data communication services such as interactive video text service between data service vendors and customers. The digital multi-customer interface utilizes a main processor, control circuit, and multi-customer protocol controller to implement the protocol functions for the communication of packets and control information over individual serial transmission paths. The multi-customer protocol controller comprises a control processor and a formatter circuit for synchronously communicating packets for a plurality of customer terminals via customer line units and customer lines. The control processor performs byte-to-packet and packet-to-byte functions between the main processor and the formatter circuit. The formatter circuit is shared in common by all of the customer lines and performs the functions of assembling and disassembling data bytes from and to individual data bit signals, performing error cyclic redundancy checks and generations, performing flag recognition and generations, and performing bit stuffing and unstuffing. The control circuit handles communication of all control and status information between the main processor and the customer line units. The control buffer periodically transmits the control information received from the main processor to all of the customer units and receives back from them status information which is stored for later use by the main processor.

摘要翻译： 一种通信方法和数字多用户数据接口，用于将多个客户终端互连到局域数据传输系统的主分组交换网络，该数据交换网络提供诸如数据服务供应商和客户之间的交互式视频文本服务的数据通信服务。 数字多用户接口利用主处理器，控制电路和多客户协议控制器来实现用于通过各个串行传输路径分组和控制信息的通信的协议功能。 多客户协议控制器包括控制处理器和格式化器电路，用于经由客户线路单元和客户线路同时传送多个客户终端的分组。 控制处理器在主处理器和格式器电路之间执行字节到数据包和数据包到字节的功能。 格式器电路由所有客户线共同共同执行，并且对各个数据位信号执行数据字节的组合和拆卸的功能，执行错误循环冗余校验和代码，执行标志识别和代码，以及执行位填充和 解开 控制电路处理主处理器和客户线路单元之间的所有控制和状态信息的通信。 控制缓冲器周期性地将从主处理器接收到的控制信息发送到所有的客户单元，并且从它们接收用于主处理器供以后使用存储的状态信息。

公开(公告)号：US4769815A

公开(公告)日：1988-09-06

申请号：US36940

申请日：1987-04-10

申请人： Mark G. Hinch ,  John B. Reid ,  William C. Wiberg

发明人： Mark G. Hinch ,  John B. Reid ,  William C. Wiberg

IPC分类号： H04L12/801 ,  H04J3/24

CPC分类号： H04L47/10

摘要： A packet flow control method where delay data are added into an initial packet as it traverses a packet switching network, and where the receiver of the initial packet, rather than the sender, establishes a window size based on such delay data to be used for the duration of a packet connection through the network. The delay data allow for the calculation of an average rather than an instantaneous network delay such that the flow control mechanism is not dependent on the magnitude of network congestion that happens to be present when the connection is first established. Since the receiver determines the window size, the flow control mechanism is put in place as an integral part of the initial packet exchange used to establish the two-way packet connection rather than requiring an additional packet communication to the receiver after a window size calculation by the sender.

摘要翻译： 一种分组流控制方法，其中延迟数据在其穿过分组交换网络时被添加到初始分组中，并且其中初始分组的接收者而不是发送者基于这样的延迟数据建立窗口大小，以用于 通过网络的分组连接的持续时间。 延迟数据允许计算平均值而不是瞬时网络延迟，使得流控制机制不依赖于当首次建立连接时恰好存在的网络拥塞的大小。 由于接收机确定窗口大小，因此流量控制机制作为用于建立双向分组连接的初始分组交换的组成部分而不是在窗口大小计算之后要求向接收机附加分组通信 发件人。

公开(公告)号：US4642755A

公开(公告)日：1987-02-10

申请号：US481056

申请日：1983-03-31

申请人： Mark G. Hinch

发明人： Mark G. Hinch

IPC分类号： G06F15/167 ,  H04L12/56 ,  G06F13/00

CPC分类号： H04L12/56 ,  G06F15/167

摘要： A communication method and digital multi-customer data interface for interconnecting a number of customer terminals to a main packet switching network of a local area data transport system that provides data communication services such as interactive video text service between data service vendors and customers. The digital multi-customer interface utilizes a main processor, control circuit, and multi-customer protocol controller to implement the protocol functions for the communication of packets and control information over individual serial transmission paths. The multi-customer protocol controller comprises a control processor and a formatter circuit for synchronously communicating packets for a plurality of customer terminals via customer line units and customer lines. The control circuit handles communication of all control and status information between the main processor and the customer line units. The control processor includes a shared memory and first-in first-out memories that are used to communicate messages with the main processor. Both processors address the shared memory with logical addresses, and the control processor's logical address space is structured so as to facilitate the use of relative addressing.

摘要翻译： 一种通信方法和数字多用户数据接口，用于将多个客户终端互连到本地数据传输系统的主分组交换网络，该数据交换网络提供诸如数据服务供应商和客户之间的交互式视频文本服务的数据通信服务。 数字多用户接口利用主处理器，控制电路和多客户协议控制器来实现用于通过各个串行传输路径分组和控制信息的通信的协议功能。 多客户协议控制器包括控制处理器和格式化器电路，用于经由客户线路单元和客户线路同时传送多个客户终端的分组。 控制电路处理主处理器和客户线路单元之间的所有控制和状态信息的通信。 控制处理器包括用于与主处理器通信消息的共享存储器和先进先出存储器。 两个处理器都使用逻辑地址对共享存储器进行寻址，并且控制处理器的逻辑地址空间被构造为便于使用相对寻址。