Invention Grant
US09106948B2 Adaptive PID controller for audio/video clock recovery 有权
用于音频/视频时钟恢复的自适应PID控制器

  • Patent Title: Adaptive PID controller for audio/video clock recovery
  • Patent Title (中): 用于音频/视频时钟恢复的自适应PID控制器
  • Application No.: US13976727
    Application Date: 2011-09-27
  • Publication No.: US09106948B2
    Publication Date: 2015-08-11
  • Inventor: Pat Brouillette
  • Applicant: Pat Brouillette
  • Applicant Address: US CA Santa Clara
  • Assignee: INTEL CORPORATION
  • Current Assignee: INTEL CORPORATION
  • Current Assignee Address: US CA Santa Clara
  • Agency: Lynch Law Patent Group, P.C.
  • International Application: PCT/US2011/053507 WO 20110927
  • International Announcement: WO2013/048377 WO 20130404
  • Main IPC: H04J3/06
  • IPC: H04J3/06 H04N21/43
Adaptive PID controller for audio/video clock recovery
Abstract:
Systems, devices and methods are described including specifying a jitter response control parameter, receiving multiple timestamp pairs. A maximum jitter of the timestamp pairs may be determined along with an elapsed time, and a clock frequency may be adjusted if the maximum jitter is less than the elapsed time divided by the jitter response control parameter. The jitter response control parameter may be adjusted in response to changes in die jitter of the input A/V signal. Further, one or more Proportional-Integral-Derivative (PID) controller coefficients may be adjusted in response to the evaluated jitter of the timestamp pairs.
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