Auto frequency control circuit and receiver
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United States of America Patent
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Aug 9, 2016
Grant Date -
Jun 23, 2016
app pub date -
Dec 18, 2015
filing date -
Dec 18, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
According to an embodiment, an auto frequency control circuit includes a peak time detector, a first time shifter a zero-crossing time detector, and a second time shifter. The peak time detector detects, from the digital signal, a first time at which the digital signal exhibits one of a maximal value and a minimal value. The first time shifter adds or subtracts a first natural number multiple of the predetermined period to or from the first time. The zero-crossing time detector detects, from the digital signal, a second time at which the digital signal exhibits one of a positive zero-crossing and a negative zero-crossing. The second time shifter adds or subtracts the first natural number multiple of the predetermined period to or from the second time.
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