| 摘要 |
<P>PROBLEM TO BE SOLVED: To correct distortion in the duty cycle of a data signal in which occurrence probabilities of "0" and "1" are different. <P>SOLUTION: A phase detection circuit 21 detects advanced and delayed phases of a data signal in which occurrence probabilities of "0" and "1" are different. An AND circuit 43 detects rising of the data signal and an AND circuit 44 detects falling. A +DCD detection circuit 45 detects distortion at a plus side of duty cycle based on detection results of the phase detection circuit 21 and the AND circuits 43 and 44, and a -DCD detection circuit 46 detects distortion at a minus side of duty cycle. A duty adjustment circuit 12 adjusts the duty cycle based on detection results of the +DCD detection circuit 45 and the -DCD detection circuit 46, thereby correcting the distortion of duty cycle. The present invention may be applicable to e.g., a receiving apparatus that receives a data signal. <P>COPYRIGHT: (C)2010,JPO&INPIT |
