| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately compensate a clock phase regardless of an operation environment when there are a plurality of input clocks. <P>SOLUTION: This input clock phase compensating device 100 includes phase comparing parts 120 and 130 for detecting a phase difference between two clock signals, a signal switching part 140 provided between the post stage of the phase comparing parts 120 and 130, and the previous stage of an oscillator 150 to switch and output one between output signals from the phase comparing parts 120 and 130, and the oscillator 150 provided at the post stage of the signal switching part 140 to output a frequency corresponding to output voltage of the phase comparing parts 120 and 130, wherein the phase comparing parts 120 and 130 compares phases between a clock signal from the outside with a clock signal outputted from the oscillator 150 to output a differential signal, and the oscillator 150 receives a clock signal outputted from the signal switching part 140 and gives the clock signal to the phase comparing parts 120 and 130. <P>COPYRIGHT: (C)2007,JPO&INPIT |
