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US5875354A System for synchronization by modifying the rate of conversion by difference of rate between first clock and audio clock during a second time period 失效
用于通过在第二时间段期间通过第一时钟和音频时钟之间的速率差来修改转换速率的同步系统

  • 专利标题： System for synchronization by modifying the rate of conversion by difference of rate between first clock and audio clock during a second time period
  • 专利标题（中）： 用于通过在第二时间段期间通过第一时钟和音频时钟之间的速率差来修改转换速率的同步系统
  • 申请号： US609395
    申请日： 1996-03-01
  • 公开(公告)号： US5875354A
    公开(公告)日： 1999-02-23
  • 发明人: Paul Charlton , Keith Gurganus
  • 申请人： Paul Charlton , Keith Gurganus
  • 申请人地址： CA Cupertino
  • 专利权人： Apple Computer, Inc.
  • 当前专利权人： Apple Computer, Inc.
  • 当前专利权人地址： CA Cupertino
  • 主分类号： G06F5/06
  • IPC分类号： G06F5/06 ;  G06F9/00
System for synchronization by modifying the rate of conversion by difference of rate between first clock and audio clock during a second time period
摘要：
A method and apparatus for synchronizing the presentation of time dependent data to a first dock having a first frequency is disclosed. First, a rate conversion is performed on a data stream for a first time period. Second, the rate of conversion is modified to provide a modified rate of conversion. Third, a rate of conversion having a modified rate of conversion is performed on the data stream for a second time period. The second and third steps are repeated until all samples in the data stream are presented. The rate of conversion is modified from one period to the next based on a measurement of the difference between a rate for the first clock and the rate of a second less precise clock.
摘要（中）：

公开了一种用于将时间相关数据的呈现同步到具有第一频率的第一坞站的方法和装置。 首先，对第一时间段的数据流执行速率转换。 第二，修改转换率以提供修改的转换率。 第三，对数据流进行第二时间段的具有修改的转换率的转换率。 重复第二和第三步骤，直到呈现数据流中的所有样本。 基于第一时钟的速率和第二个较不精确的时钟的速率之间的差的测量，将转换率从一个周期修改为下一个周期。

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