Patent ID: 7724859

Claim:
A synchronizing apparatus for detecting synchronization by detecting from demodulated data a synchronization pattern in a normal lock state and a synchronization pattern in a pseudo lock state, the synchronization pattern in the pseudo lock state being different from the synchronization pattern in the normal lock state, the apparatus comprising: a normal lock synchronization detecting unit to detect synchronization by detecting from the demodulated data the synchronization pattern in the normal lock state; and a pseudo lock synchronization detecting unit to detect synchronization by detecting from the demodulated data the synchronization pattern in the pseudo lock state, wherein said pseudo lock synchronization detecting unit comprises any one or more of a first pseudo lock synchronization detecting unit to detect synchronization by detecting a synchronization pattern in a first pseudo lock state where a phase shifts in units of 90° every one symbol, a second pseudo lock synchronization detecting unit to detect synchronization by detecting a synchronization pattern in a second pseudo lock state where a phase shifts in units of 180° every one symbol, and a third pseudo lock synchronization detecting unit to detect synchronization by detecting a synchronization pattern in a third pseudo lock state where a phase shifts in units of 270° or −90° every one symbol.