| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a signal reproducing circuit having a wide frequency lead-in range and reducing jitters applied to a signal. <P>SOLUTION: The signal reproducing circuit is provided with a first phase adjustment part for outputting a fist adjusted signal obtained, by adjusting a phase of an input signal; a first phase error detection part for outputting a first detection signal, corresponding to a difference between the phase of the first adjusted signal and a previously determined phase; a second phase adjustment part for outputting a second adjusted signal, obtained by adjusting the phase of the input signal; a second phase error detection part for outputting a second detection signal, corresponding to an error between the phase of the second adjusted signal and the previously determined phase; a second loop filter for making the frequency components of the second detection signal pass through, in a frequency band, corresponding to a previously determined second frequency lead-in range; a second control part for controlling the phase adjustment quantity of the second phase adjustment part, on the basis of the second detection signal passed through the second loop filter; and a first control part for controlling the phase adjustment quantity of the first phase adjustment part, on the basis of the first detection signal and the second detection signal passed through the second loop filter. <P>COPYRIGHT: (C)2008,JPO&INPIT |
