| 摘要 |
A phase shift correcting apparatus of a sync detector in a satellite broadcasting reception system corrects a phase shift of 180 DEG which makes output data after demodulation be absolutely different from an original data such that 47 sync is phase-shifted by 180 DEG to be detected as B8 sync data. For this, the number of B8 data and 47 data of input data is counted in a comparator and a counter to determine whether the phase shift of 180 DEG occurs or not, and data involving the phase shift is converted to have a normal data value when it is determined that the phase shift occurs, thereby improving reliability of a satellite broadcasting receiver and solving the problem of the different data output.
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