Synchronizing circuit

A GPS receiving-apparatus comprising:

• a receiving unit extracting C/A codes from given GPS signals, and outputting data according to time difference between the different C/A codes;
• and
• an information processing device, according to the output data of the receiving unit, obtaining position information,
• wherein said receiving unit synchronizes a predetermined code with first and second codes different in phase derived from each of the GPS signals, comprises:
• a code generating part outputting phase-shifted code shifted in phase by a predetermined number of chips from the predetermined code;
• a first correlation detecting part detecting a correlation between the phase-shifted code from said code generating part and the first code;
• a second correlation detecting part detecting a correlation between the phase-shifted code from said code generating part and the second code;
• and
• a code shifting part shifting the phase of the phase-shifted code from said code generating part by a predetermined number of chips according to the detection results of said first and second correlation detecting parts.