Patent ID: 7623424

Claim:
An apparatus for identification of ADIP units, comprising: an MSK mark identifier to identify MSK marks of the ADIP units according to an estimation window and output MSK indication signals accordingly; an NWL number indicator to designate positions of the MSK marks according to the MSK indication signals and perform a position synchronization process according to an NWL sync signal; an MSK distance finder to find a predetermined MSK mark according to spacing distances between consecutive MSK marks and output the NWL sync signal accordingly; an ADIP unit decoder to identify the ADIP units according to the positions of the MSK marks; an NWL lock unit to declare an NWL lock status according to the positions of the MSK marks designated by the NWL number indicator and the NWL sync signal; and an estimating window issuer to set the estimating window, wherein the ADIP unit decoder identifies the ADIP units according to the positions of the MSK marks after the NWL lock status is declared.