公开(公告)号：US20140348174A1

公开(公告)日：2014-11-27

申请号：US14458139

申请日：2014-08-12

Applicant: Apple Inc.

Inventor： Ashley I. Butterworth ,  Girault W. Jones, JR. ,  Matthew X. Mora

IPC: H04J3/16 ,  H04L12/751

CPC classification number: H04J3/16 ,  H04L45/10 ,  H04L47/521 ,  H04L47/564 ,  H04L47/568 ,  H04L49/9068

Abstract: Methods and apparatus for efficiently servicing isochronous streams (such as media data streams) associated with a network. In one embodiment, an Isochronous Cycle Manager (ICM), receives multiple independent streams of packets that include isochronous packets arriving according to different time bases (e.g., where each stream has a different time base). The packets are sorted by the ICM into a buffering mechanism according to their required presentation time. Additionally the ICM calculates a launch time for each packet. The NIC transmits the packets from the queue according to an access scheme, such as a time division multiplexed (TDM) scheme where each of a plurality of cycles is subdivided into time slots. During appropriate time slots, the NIC transmits the packets in chronological order, as read out of the buffering mechanism.

Abstract translation: 用于有效地维护与网络相关联的等时流（例如媒体数据流）的方法和装置。 在一个实施例中，同步周期管理器（ICM）接收包括根据不同时基到达的同步分组的多个独立的分组流（例如，每个流具有不同的时基）。 根据ICM的要求，将数据包分类为缓冲机制。 此外，ICM计算每个数据包的启动时间。 NIC根据诸如时分复用（TDM）方案的访问方案从队列中传送分组，其中多个周期中的每一个被细分为时隙。 在适当的时隙期间，NIC从缓冲机制读出时按时间顺序传输数据包。