Invention Grant
US08711996B2 Methods and apparatus for determining a phase error in signals 有权
用于确定信号相位误差的方法和装置

  • Patent Title: Methods and apparatus for determining a phase error in signals
  • Patent Title (中): 用于确定信号相位误差的方法和装置
  • Application No.: US13171363
    Application Date: 2011-06-28
  • Publication No.: US08711996B2
    Publication Date: 2014-04-29
  • Inventor: Kun-Yung Chang
  • Applicant: Kun-Yung Chang
  • Applicant Address: US CA Sunnyvale
  • Assignee: Rambus Inc.
  • Current Assignee: Rambus Inc.
  • Current Assignee Address: US CA Sunnyvale
  • Agent Steven J. Cahill
  • Main IPC: H04L7/02
  • IPC: H04L7/02
Methods and apparatus for determining a phase error in signals
Abstract:
An integrated circuit includes samplers, a phase error determination circuit, and periodic signal generators. The samplers generate respective sampled signals by sampling respective input signals in response to respective periodic signals. The input signals have a common phase error. The phase error determination circuit receives the sampled signals from the samplers. The phase error determination circuit generates a representation of the common phase error of the input signals in response to sampled signals received in a set-up mode in which the samplers sample respective input signals having a common bit pattern. The periodic signal generators generate the periodic signals differing in phase from one another by defined phase differences in the set-up mode and subject the periodic signals to a common phase shift in a normal mode in response to the representation of the common phase error. The common phase shift matches the common phase error of the input signals.
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