Buffer management mechanism for distributed multimedia applications
    1.
    发明授权
    Buffer management mechanism for distributed multimedia applications 失效
    分布式多媒体应用的缓存管理机制

    公开(公告)号:US5983279A

    公开(公告)日:1999-11-09

    申请号:US707202

    申请日:1996-08-30

    CPC classification number: G06F9/5016

    Abstract: The present invention allocates a buffer within a buffer pool to each connection to an application or to each application. By managing the user of the buffers in this manner, the present invention avoids the conventional problems of the possibility of a dominant application monopolizing virtually all of the available buffer space and forcing the other applications to wait for space to become available. Additionally, because each application has its own buffer space allocated to it, it minimizes the risk of the problems of one application contaminating other applications. A method according to the present invention for buffer management for transferring data in a processing system comprises the steps of opening a virtual circuit, allocating a buffer for the virtual circuit, utilizing the buffer, and returning control of the buffer to an owner after utilization of the buffer.

    Abstract translation: 本发明将缓冲池中的缓冲器分配给应用或每个应用的每个连接。 通过以这种方式管理缓冲器的用户,本发明避免了主要应用可能性实际上垄断所有可用缓冲区空间并迫使其他应用程序等待空间变得可用的常规问题。 此外,由于每个应用程序都有自己的缓冲区空间,因此最大程度地降低了一个应用程序的问题的风险,从而污染其他应用程序。 根据本发明的用于在处理系统中传送数据的缓冲器管理的方法包括以下步骤:打开虚拟电路,为虚拟电路分配缓冲器,利用缓冲器,以及在使用缓冲器之后将所述缓冲器的控制返回给所有者 缓冲区。

    Method and system for supporting constant bit rate encoded MPEG-2
transport over local ATM networks
    2.
    发明授权
    Method and system for supporting constant bit rate encoded MPEG-2 transport over local ATM networks 失效
    用于通过本地ATM网络支持恒定比特率编码的MPEG-2传输的方法和系统

    公开(公告)号:US5742599A

    公开(公告)日:1998-04-21

    申请号:US606602

    申请日:1996-02-26

    Abstract: A system and method for supporting constant bit rate encoded MPEG-2 transport over local Asynchronous Transfer Mode (ATM) networks. The present invention encapsulates constant bit rate encoded MPEG-2 transport packets, which are 188 bytes is size, in an ATM AAL-5 Protocol Data Unit (PDU), which is 65,535 bytes in size. The method and system includes inserting a plurality of MPEG-2 transport packets into a single AAL-5 PDU, inserting a segment trailer into the ATM packet after every two MPEG packets, and then inserting an ATM trailer at the end of the ATM packet. In a preferred embodiment, 10 or 12 MPEG-2 transport packets are packed into one AAL-5 PDU to yield a throughput 70.36 and 78.98 Mbits/sec, respectively, thereby supporting fast forward and backward playing of MPEG-2 movies via ATM networks.

    Abstract translation: 一种用于通过局部异步传输模式(ATM)网络支持恒定比特率编码的MPEG-2传输的系统和方法。 本发明在ATM AAL-5协议数据单元(PDU)中封装大小为188字节的恒定比特率编码MPEG-2传输分组,其大小为65,535字节。 该方法和系统包括将多个MPEG-2传输分组插入到单个AAL-5 PDU中,在每两个MPEG分组之后将分段尾部插入到ATM分组中,然后在ATM分组结束时插入ATM尾部。 在优选实施例中,将10或12个MPEG-2传输分组打包到一个AAL-5 PDU中,以分别产生吞吐量70.36和78.98Mbits /秒,从而支持通过ATM网络快速前进和后退播放MPEG-2电影。

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