| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a clock signal reproducing PLL circuit, a clock signal reproducing method and an optical disk reproducing apparatus in which a clock signal synchronized with an RF signal can be stably reproduced. <P>SOLUTION: In an optical disk reproducing apparatus incorporating a clock signal reproducing PLL circuit which includes an analog/digital converting means, a phase error signal generating means, filter means, a digital/analog converting means and an oscillation means and reproduces a clock signal from an RF signal read from a recording medium, a filter means includes an abnormality detecting means for detecting abnormality in the reproduced clock signal and a stored signal erasing means for erasing digital phase error signals stored for a predetermined time in the filter means if the abnormality detecting means detects abnormality of the clock signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
