Invention Grant
US08320770B2 Clock and data recovery for differential quadrature phase shift keying 有权
时钟和数据恢复用于差分正交相移键控

  • Patent Title: Clock and data recovery for differential quadrature phase shift keying
  • Patent Title (中): 时钟和数据恢复用于差分正交相移键控
  • Application No.: US12728756
    Application Date: 2010-03-22
  • Publication No.: US08320770B2
    Publication Date: 2012-11-27
  • Inventor: Nikola Nedovic
  • Applicant: Nikola Nedovic
  • Applicant Address: JP Kawasaki-shi
  • Assignee: Fujitsu Limited
  • Current Assignee: Fujitsu Limited
  • Current Assignee Address: JP Kawasaki-shi
  • Agency: Baker Botts L.L.P.
  • Main IPC: H04B10/00
  • IPC: H04B10/00
Clock and data recovery for differential quadrature phase shift keying
Abstract:
In one embodiment, a method includes receiving a first input stream, generating a first clock, sampling the first input stream based on the first clock, detecting a first phase difference between the first input stream and the first clock to generate a clock-correction signal and a first select signal, and generating a first recovered stream based on the first select signal. The method may additionally include receiving a second input stream, generating a second clock, sampling the second input stream based on the second clock, detecting a second phase difference between the second input stream and the second clock to generate a clock-correction signal and a second select signal, and generating a second recovered stream based on the second select signal. The method may further include adjusting the clocks based on the first and second clock-correction signals and combining the first and second recovered data streams to generate an output.
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