Title:
TECHNIQUES FOR PHASE DETECTION
Document Type and Number:
WIPO Patent Application WO/2011/059842
Kind Code:
A3
Abstract:
A phase detection circuit can include two phase detectors that each generate a non-zero output in response to input signals being aligned in phase. The input signals are based on two periodic signals. The phase detection circuit subtracts the output signal of one phase detector from the output signal of the other phase detector to generate a signal having a zero value when the periodic signals are in phase. Alternatively, a phase detector generates a phase comparison signal indicative of a phase difference between periodic signals. The phase comparison signal has a non-zero value in response to input signals to the phase detector being aligned in phase. The input signals are based on the periodic signals. An output circuit receives the phase comparison signal and generates an output having a zero value in response to the periodic signals being aligned in phase.
Inventors:
LEIBOWITZ BRIAN (US)
LEE HAE-CHANG (US)
ARYANFAR FARSHID (US)
CHANG KUN-YUNG (US)
SHEN JIE (US)
LEE HAE-CHANG (US)
ARYANFAR FARSHID (US)
CHANG KUN-YUNG (US)
SHEN JIE (US)
Application Number:
PCT/US2010/054900
Publication Date:
August 18, 2011
Filing Date:
October 31, 2010
Export Citation:
Assignee:
RAMBUS INC (US)
LEIBOWITZ BRIAN (US)
LEE HAE-CHANG (US)
ARYANFAR FARSHID (US)
CHANG KUN-YUNG (US)
SHEN JIE (US)
LEIBOWITZ BRIAN (US)
LEE HAE-CHANG (US)
ARYANFAR FARSHID (US)
CHANG KUN-YUNG (US)
SHEN JIE (US)
International Classes:
H03L7/087; G11C11/407
Foreign References:
| US20080265957A1 | 2008-10-30 | |||
| US6993109B2 | 2006-01-31 | |||
| US7298191B2 | 2007-11-20 |
Attorney, Agent or Firm:
CAHILL, Steven (Menlo Park, CA, US)
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