Patent ID: 6980617

Claim:
A reception data synchronizing apparatus for a synchronization to be obtained between reception data having a plurality of synchronism patterns and expectation data as an expected value of the reception data, comprising: a synchronism pattern detecting position recording means for recording a first synchronism timing at which a first of the plurality of synchronism patterns of the reception data is detected; and a collation and synchronism decision means for collating the reception data with the expectation data to decide whether or not the reception data is consistent in phase with the expectation data according to the first synchronism timing, wherein the synchronism pattern detecting position recording means, when the collation and synchronism decision means gives a decision for inconsistency in phase, records a second synchronism timing, said second synchronism timing being a timing at which a second of the plurality of synchronism patterns is detected after the first synchronism pattern, which is recorded in the synchronism pattern detecting position recording means as the first synchronism timing, is detected again.