公开(公告)号：US20080056255A1

公开(公告)日：2008-03-06

申请号：US11513006

申请日：2006-08-30

Applicant: Kenneth Paul Birman ,  Mahesh Balakrishnan

Inventor： Kenneth Paul Birman ,  Mahesh Balakrishnan

IPC: H04L12/56

CPC classification number: H04L12/1868 ,  H04L1/1812 ,  H04L2001/0093

Abstract: A system and method for providing a low-latency reliable multicast protocol designed for time-critical clustered applications. Internet Protocol (IP) multicast is used to transmit data and recovers from packet loss in end-hosts using a repair mechanism involving the exchange of XOR repairs between receivers and across groups. The system and method of the present invention can be embodied in a scalable, reliable and fast multicast primitive that can be layered under high-level abstractions such as publish-subscribe, group communication and replicated service/object infrastructures.

Abstract translation: 一种用于为时间关键的集群应用程序提供设计的低延迟可靠多播协议的系统和方法。 互联网协议（IP）组播用于传输数据，并使用修复机制从终端主机的丢包中恢复，这种修复机制涉及接收器和组之间的XOR修复交换。 本发明的系统和方法可以以可扩展，可靠和快速的多播原语来实现，其可以在诸如发布订阅，组通信和复制服务/对象基础设施的高级抽象下分层。

公开(公告)号：US06208691B1

公开(公告)日：2001-03-27

申请号：US09369537

申请日：1999-08-06

Applicant: Mahesh Balakrishnan ,  Cedric Caron

Inventor： Mahesh Balakrishnan ,  Cedric Caron

IPC: H04N732

CPC classification number: H04N21/23406 ,  H04N19/114 ,  H04N19/115 ,  H04N19/117 ,  H04N19/124 ,  H04N19/142 ,  H04N19/149 ,  H04N19/152 ,  H04N19/159 ,  H04N19/172 ,  H04N19/177 ,  H04N19/40 ,  H04N19/577 ,  H04N19/61 ,  H04N21/23424 ,  H04N21/2365 ,  H04N21/4347 ,  H04N21/44004 ,  H04N21/44016

Abstract: A method of achieving seamless switching of digitally compressed signals. The method includes the steps of identifying the point in a video signal where splicing to a second video signal is desired, and thereafter, maintaining adherence to certain parameters in the encoder buffer to ensure that the input signal. is not being compressed at a rate that causes either underflow or overflow in the encoder buffer. The method also includes the steps of constraining the upper bound of the encoder buffer to ensure that data is not being outputted from the encoder buffer to the decoder buffer too slowly so as to cause an underflow of data in the decoder buffer. The method may also include the steps of constraining the lower bound of the encoder buffer to ensure that data is not being outputted from the encoder buffer to the decoder buffer too quickly so as to cause an overflow of data in the decoder buffer.

Abstract translation: 实现数字压缩信号的无缝切换的方法。 该方法包括以下步骤：识别在期望与第二视频信号进行拼接的视频信号中的点，之后，保持对编码器缓冲器中的某些参数的遵守以确保输入信号。 不会以导致编码器缓冲区下溢或溢出的速率被压缩。 该方法还包括限制编码器缓冲器的上限以确保数据没有被缓慢地从编码器缓冲器输出到解码器缓冲器的步骤，从而导致解码器缓冲器中的数据下溢。 该方法还可以包括以下步骤：限制编码器缓冲器的下限，以确保数据不会被快速地从编码器缓冲器输出到解码器缓冲器，从而导致解码器缓冲器中的数据溢出。