- 专利标题: Method and apparatus for modifying the rate of MPEG transport streams
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申请号: US10072625申请日: 2002-02-06
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公开(公告)号: US07103047B1公开(公告)日: 2006-09-05
- 发明人: Isaac Wingfield
- 申请人: Isaac Wingfield
- 申请人地址: US CA Sunnyvale
- 专利权人: Juniper Networks, Inc.
- 当前专利权人: Juniper Networks, Inc.
- 当前专利权人地址: US CA Sunnyvale
- 代理机构: Harrity Snyder LLP
- 主分类号: H04L12/28
- IPC分类号: H04L12/28 ; H04J3/16 ; H04J3/22
摘要:
In a cable modem system, increasing or decreasing the rate of an MPEG Transport Stream involves two separate, but related, tasks: 1) incorporating a sufficient number of additional packets (or discarding packets) to make up for the difference in data rates between input and output, and 2) altering timing information (for instance, PCR (Program Clock Reference) values) present in some incoming packets to reflect their altered positions in the output stream. Both of these tasks can be facilitated by the use of a FIFO (First-In, First-Out) structure, through which the data flows.