Circuit and method for inducing jitter to a signal
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United States of America Patent
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Feb 14, 2006
Grant Date -
Jul 15, 2004
app pub date -
Dec 1, 2003
filing date -
Dec 2, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A jitter inducing circuit receives a reference pulse train and induces desired amounts of jitter to the rising and/or falling edges of the pulses. First and second delay blocks 16 and 18 alternately delay the selected edge or edges of the provided reference pulse train interval by preset delay times for every interval. A signal composer 46 composes the outputs of the first and second delay blocks 16 and 18. A delay time setup circuit controls the delay times of the delay blocks 16 and 18. The delay times may change for each interval as a function of time so as to trace a desired function such as a sinusoidal or triangular function.
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