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1. 发明授权

US4625288A Method and apparatus for creating a structured image data set based on acquired image data 失效
标题翻译：用于基于获取的图像数据创建结构化图像数据集的方法和装置
公开(公告)号：US4625288A
公开(公告)日：1986-11-25
申请号：US656611
申请日：1984-10-01
申请人： Herbert S. Weiner , William L. Mills , Charles E. Perkins , Chi-Leung Lau , Jeffrey P. Mayhew , Samuel Y. Gordon
发明人： Herbert S. Weiner , William L. Mills , Charles E. Perkins , Chi-Leung Lau , Jeffrey P. Mayhew , Samuel Y. Gordon
IPC分类号： G06F17/50 , G06T19/20 , G06F15/26
CPC分类号： G06T19/20 , G06F3/04845 , G06T11/60 , G06T2219/2012
摘要： A method of structuring vectorized data obtained by scanning a drawing or other document comprising the steps of displaying on a computer controlled display screen a template image comprising template lines and nodes corresponding to the acquired image data and selecting portions of the acquired image data to be designated for inclusion in a restructured image data set by using a screen cursor to select the corresponding template lines displayed on the screen. Inclusion designations are subsequently and selectively removed as desired from portions of the acquired image data from the structured data set by using the cursor to select the corresponding lines and nodes on the screen. When the desired portions of the acquired data set are selectively designated for inclusion in the restructured data set, all remaining designated data is copied into the restructured image data.
摘要翻译：一种构造通过扫描图形或其它文档获得的矢量化数据的方法，包括以下步骤：在计算机控制的显示屏幕上显示包括与所获取的图像数据相对应的模板行和节点的模板图像，并且选择要被指定的所获取的图像数据的部分通过使用屏幕光标来选择显示在屏幕上的相应模板行，以便包含在重构的图像数据集中。随后通过使用光标从所述结构化数据集的所获取的图像数据的部分中随机选择性地去除包含名称，以在屏幕上选择相应的行和节点。当选择性地指定所获取的数据集合的所需部分以包含在重构数据集中时，所有剩余的指定数据被复制到重构的图像数据中。

2. 发明授权

US4961188A Synchronous frequency encoding technique for clock timing recovery in a broadband network 失效
标题翻译：用于宽带网络中时钟定时恢复的同步频率编码技术
公开(公告)号：US4961188A
公开(公告)日：1990-10-02
申请号：US404331
申请日：1989-09-07
申请人： Chi-Leung Lau
发明人： Chi-Leung Lau
IPC分类号： H04J3/06 , H04L12/56
CPC分类号： H04J3/0632 , H04L2012/5616 , H04L2012/5649 , H04L2012/5652 , H04L2012/5681
摘要： A sychronous frequency encoding technique (SFET) provides method and apparatus for recovering the timing of an isochronous source node input service signal at the destination node of a synchronous ATM telecommunication network despite cell jitter which arises from the broadband multiplexing and switching delays in the network. A source node control clock is employed which is of greater frequency than that of the service signal and as a result a data under-flow condition occurs in the cell assembly process at a rate that is a function of the difference between such clock frequencies. Regular cell transmission is inhibited for a period at each under-flow occurrence and this pseudo-"stuffed cell" gap is signaled by setting a flag bit carried by an ensuing transmitted cell. At the destination node, a timing stream from the control clock, which is synchronous with that of the source node, is regularly gapped by inserting periods of delay according to the ratio of flagged cells in the service transmission, thereby reducing the timing stream by the noted frequency difference and reproducing the original service signal frequency.
摘要翻译：同步频率编码技术（SFET）提供用于在同步ATM电信网络的目的地节点处恢复等时源节点输入服务信号的定时的方法和装置，尽管由网络中的宽带复用和切换延迟引起的小区抖动。使用源节点控制时钟，其频率大于服务信号的频率，并且因此在小区组合过程中以与这些时钟频率之间的差的函数的速率发生数据欠流状态。在每个欠流发生期间，正常小区传输被禁止一段时间，并且通过设置由随后的传输小区携带的标志位来用信号通知该伪“填充小区”间隙。在目的地节点处，通过根据服务传输中标记的小区的比例插入延迟时段来定期间隔与来自源节点同步的控制时钟的定时流，从而减少定时流注意到频率差异并再现原始服务信号频率。

3. 再颁专利

USRE36633E Synchronous residual time stamp for timing recovery in a broadband network 失效
标题翻译：用于宽带网络定时恢复的同步剩余时间戳
公开(公告)号：USRE36633E
公开(公告)日：2000-03-28
申请号：US555196
申请日：1995-11-08
申请人： Paul E. Fleischer , Chi-Leung Lau
发明人： Paul E. Fleischer , Chi-Leung Lau
IPC分类号： H04J3/06 , H04L12/56 , H04L12/64 , H04N21/43 , H04N21/643 , H04Q11/04 , H04L7/00
CPC分类号： H04N21/64307 , H04J3/0632 , H04L12/6418 , H04N21/4305 , H04Q11/0478 , H04L2012/5649 , H04L2012/5653 , H04L2012/5654 , H04L2012/5674
摘要： A Residual Time Stamp (RTS) technique provides a method and apparatus for recovering the timing signal of a constant bit rate input service signal at the destination node of a synchronous ATM telecommunication network. At the source node, a free-running P-bit counter counts cycles in a common network clock. At the end of every RTS period formed by N service clock cycles, the current count of the P-bit counter, defined as the RTS, is transmitted in the ATM adaptation layer. Since the absolute number of network clock cycles likely to fall within an RTS period will fall within a range determined by N, the frequencies of the network and service clocks, and the tolerance of the service clock, P is chosen so that the 2.sub.P possible counts, rather than representing the absolute number of network clock cycles an RTS period, provide sufficient information for unambiguously representing the number of network clock cycles within that predetermined range. At the destination node, a pulse signal is derived in which the periods are determined by the number of network clock cycles represented by the received RTSs. This pulse signal is then multiplied in frequency by N to recover the source node service clock.
摘要翻译：残余时间戳（RTS）技术提供了一种在同步ATM电信网络的目的地节点处恢复恒定比特率输入服务信号的定时信号的方法和装置。在源节点，自由运行的P位计数器在公共网络时钟中计数周期。在由N个服务时钟周期形成的每个RTS周期结束时，定义为RTS的P位计数器的当前计数在ATM适配层中传输。由于可能落在RTS周期内的网络时钟周期的绝对数量将落在由N确定的范围内，因此选择网络和服务时钟的频率以及服务时钟P的容限，使得2P可能计数，而不是表示RTS周期的网络时钟周期的绝对数量，提供足够的信息来明确地表示在该预定范围内的网络时钟周期的数量。在目的地节点处，导出脉冲信号，其中周期由接收的RTS表示的网络时钟周期的数量确定。然后将该脉冲信号以频率乘以N以恢复源节点服务时钟。

4. 发明授权

US5260978A Synchronous residual time stamp for timing recovery in a broadband network 失效
标题翻译：用于宽带网络定时恢复的同步剩余时间戳
公开(公告)号：US5260978A
公开(公告)日：1993-11-09
申请号：US969592
申请日：1992-10-30
申请人： Paul E. Fleischer , Chi-Leung Lau
发明人： Paul E. Fleischer , Chi-Leung Lau
IPC分类号： H04J3/06 , H04L12/56 , H04L12/64 , H04N21/43 , H04N21/643 , H04Q11/04 , H04L7/00
CPC分类号： H04N21/64307 , H04J3/0632 , H04L12/6418 , H04N21/4305 , H04Q11/0478 , H04L2012/5649 , H04L2012/5653 , H04L2012/5654 , H04L2012/5674
摘要： A Residual Time Stamp (RTS) technique provides a method and apparatus for recovering the timing signal of a constant bit rate input service signal at the destination node of a synchronous ATM telecommunication network. At the source node, a free-running P-bit counter counts cycles in a common network clock. At the end of every RTS period formed by N service clock cycles, the current count of the P-bit counter, defined as the RTS, is transmitted in the ATM adaptation layer. Since the absolute number of network clock cycles likely to fall within an RTS period will fall within a range determined by N, the frequencies of the network and service clocks, and the tolerance of the service clock, P is chosen so that the 2.sup.P possible counts, rather than representing the absolute number of network clock cycles an RTS period, provide sufficient information for unambiguously representing the number of network clock cycles within that predetermined range. At the destination node, a pulse signal is derived in which the periods are determined by the number of network clock cycles represented by the received RTSs. This pulse signal is then multiplied in frequency by N to recover the source node service clock.
摘要翻译：残余时间戳（RTS）技术提供了一种在同步ATM电信网络的目的地节点处恢复恒定比特率输入服务信号的定时信号的方法和装置。在源节点，自由运行的P位计数器在公共网络时钟中计数周期。在由N个服务时钟周期形成的每个RTS周期结束时，定义为RTS的P位计数器的当前计数在ATM适配层中传输。由于可能落在RTS周期内的网络时钟周期的绝对数量将落在由N确定的范围内，因此选择网络和服务时钟的频率以及服务时钟P的容限，使得2P可能计数，而不是表示RTS周期的网络时钟周期的绝对数量，提供足够的信息来明确地表示在该预定范围内的网络时钟周期的数量。在目的地节点处，导出脉冲信号，其中周期由接收的RTS表示的网络时钟周期的数量确定。然后将该脉冲信号以频率乘以N以恢复源节点服务时钟。

5. 发明授权

US4835763A Survivable ring network 失效
标题翻译：生存环网
公开(公告)号：US4835763A
公开(公告)日：1989-05-30
申请号：US152238
申请日：1988-02-04
申请人： Chi-Leung Lau
发明人： Chi-Leung Lau
IPC分类号： H04J3/08 , H04L12/437
CPC分类号： H04J3/085 , H04L12/437
摘要： A survivable ring network is disclosed that can withstand a cut link or failed node, without the need for a central controller or protection switching among links. The disclosed invention comprises two rings carrying identical multiplexed node-to-node communications in opposite directions. When a system error is detected in a downstream node, error signals are inserted in all subrate channels. Each subrate channel receiver receives identical communications from each ring. If one subrate channel has an error signal, the receiver selects the alternate channel.
摘要翻译：公开了一种可以承受切断链路或故障节点的可靠环网，而不需要中央控制器或链路之间的保护切换。所公开的发明包括在相反方向上携带相同复用的节点到节点通信的两个环。当在下游节点检测到系统错误时，将错误信号插入所有子速率通道。每个子速率信道接收机从每个环接收相同的通信。如果一个子速率信道有错误信号，则接收机选择备用信道。

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