PHASE CONTROL SYSTEM

专利名称：PHASE CONTROL SYSTEM发明人：YOSHIDA ATSUSHI申请号：JP18541588申请日：19880727公开号：JPH0236640A公开日：19900206

摘要：PURPOSE:To effectively suppress a phase jitter over a wide range with aminimum hardware by counting the frequency of phase jitter resulting in switching theoperation mode. CONSTITUTION:When a comparator 113 decides that the frequency ofphase jitter is larger than a prescribed value, a selector 114 selects a loop coefficient K2and also closes the switch 115. Since a predictive filter 109 is operated, the phase jitter ismainly suppressed by a phase rotating device 102. Moreover, when the comparator 113decides that the frequency of phase jitter is lower than a prescribed value, the selector114 selects a loop coefficient K1 and also opens the switch 115. Thus, the predictive filter109 is inoperative and the phase jitter is suppressed by the phase rotating device 101.

申请人：NEC CORP

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