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1. 发明授权

US5872780A Sonet data transfer protocol between facility interfaces and cross-connect 失效
标题翻译： Sonet数据传输协议在设备接口和交叉连接之间
公开(公告)号：US5872780A
公开(公告)日：1999-02-16
申请号：US886724
申请日：1992-05-21
申请人： Sahabettin C. Demiray , Dale L. Krisher , William B. Weeber
发明人： Sahabettin C. Demiray , Dale L. Krisher , William B. Weeber
IPC分类号： H04J3/14 , H04J3/16 , H04Q11/04 , H04L12/52
CPC分类号： H04J3/14 , H04J3/1611 , H04J2203/006 , Y10S370/907
摘要： An internal signal within a SONET element has a transport format having overhead and payload mapped in a manner similar to the Synchronous Optical Network standard mapping, except having selected overhead bytes defined differently, including a byte used for communicating odd parity calculated over an odd number of bytes of a frame of the transport format to determine correct or incorrect parity, selected bytes used for inter-module automatic protection switching, and a pointer having a selected fixed value, along with an adjusted virtual tributary pointer in a virtual tributary mode.
摘要翻译： SONET元件内的内部信号具有以类似于同步光网络标准映射的方式映射的开销和有效载荷的传输格式，除了具有不同定义的所选开销字节之外，包括用于传送在奇数个传输格式的帧的字节以确定正确或不正确的奇偶校验，用于模块间自动保护切换的所选字节，以及具有选定的固定值的指针以及虚拟辅助模式中调整的虚拟辅助指针。

2. 发明授权

US5740157A Distributed control methodology and mechanism for implementing automatic protection switching 失效
标题翻译：实现自动保护切换的分布式控制方法和机制
公开(公告)号：US5740157A
公开(公告)日：1998-04-14
申请号：US887156
申请日：1992-05-21
申请人： Sahabettin C. Demiray , Dale L. Krisher , Raymond E. Tyrrell
发明人： Sahabettin C. Demiray , Dale L. Krisher , Raymond E. Tyrrell
IPC分类号： H04L29/14 , H04J3/14 , H04J3/16 , H04L12/24 , H04Q11/04 , H04L1/22
CPC分类号： H04J3/1611 , H04J3/14 , H04Q11/0407
摘要： Redundant facility payload signals (12, 14) received by redundant interface modules (16, 18) are redundantly provided (28, 30; 32, 34) to redundant downstream modules (24, 26) in an equipment (10). A non-symmetrical facility protection algorithm is resident in the B interface module (18). Symmetrical equipment protection algorithms are independently resident and operative in each module of pairs of identical A and B modules at each stage of the data stream. Module or data failures result in switchover only of the disabled data path or module so that the ability to transport payload is maintained and other modules or data paths are unaffected. Facility switchover is effected by detecting a working line failure and transmitting commands to switch the protection line to the A path modules. Equipment switchover is effected by checking for a working or protection module failure independently in each path and independently communicating independent switchover decisions to the other side and downstream. The methodology and mechanism are disclosed in a SONET element embodiment, although the invention is applicable in other contexts.
摘要翻译：冗余接口模块（16,18）接收的冗余设施有效载荷信号（12,14）被冗余地提供给设备（10）中的冗余下游模块（24,26）（28,30; 32,34）。非对称设备保护算法驻留在B接口模块（18）中。在数据流的每个阶段，对称设备保护算法独立地驻留在每个相同A和B模块对中的模块中。模块或数据故障导致只切换禁用的数据路径或模块，以便维护传输有效负载的能力，并且其他模块或数据路径不受影响。通过检测工作线路故障并发送命令将保护线路切换到A路径模块来实现设备切换。通过在每个路径中独立检查工作或保护模块故障并独立地将独立切换决策传递到另一侧和下游来实现设备切换。在SONET元件实施例中公开了方法和机制，尽管本发明可应用于其它上下文。

3. 发明授权

US5809032A Time division multiplexed synchronous state machine having state memory 失效
标题翻译：具有状态存储器的时分复用同步状态机
公开(公告)号：US5809032A
公开(公告)日：1998-09-15
申请号：US783197
申请日：1997-01-15
申请人： William B. Weeber , Ertugrul Baydar , Sahabettin C. Demiray
发明人： William B. Weeber , Ertugrul Baydar , Sahabettin C. Demiray
IPC分类号： H04J3/06 , H04L7/04
CPC分类号： H04J3/0623
摘要： A receive SONET line interface includes an elastic store which receives and stores incoming signals from a pointer tracking circuit and retrieves stored signals for providing to a pointer generating circuit wherein, for both the pointer tracking and pointer generating circuits, separate state memories are provided for keeping track of the state of previous state pointer tracking and generating signals in time slots of repetitive frames of an incoming SONET signal.
摘要翻译：接收SONET线路接口包括弹性存储器，其接收并存储来自指针跟踪电路的输入信号，并检索存储的信号以提供给指针产生电路，其中，对于指针跟踪和指针产生电路两者，提供分离的状态存储器用于保持跟踪前一状态指针跟踪的状态，并在输入的SONET信号的重复帧的时隙中产生信号。

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