Patent ID: 8908773

Claim:
A method comprising the steps of: encoding a first set of data blocks, the first set of data blocks representing mobile broadcast data encoded for use by a first type of receiver capable of decoding and recognizing the first set of data blocks; determining a data length for the first set of encoded data blocks, wherein the data length is identified in either packets or blocks; and inserting at least one data block from a second set of data blocks within the first set of encoded data blocks at a location prior to a field sync if the data length is greater than a data length threshold, the second set of data blocks representing a legacy broadcast television transmission signal encoded for use by a second type of receiver capable of decoding and recognizing the second set of data blocks and not capable of decoding and recognizing the first set of data blocks, and wherein the data length threshold and location for the inserting of the at least one data block is determined based on preventing synchronization errors in the second type of receiver while decoding the second set of data blocks during a time of receiving the first set of data blocks and wherein the first set of encoded data blocks is encoded to prevent the second type of receiver from interpreting the first set of encoded data as corrupted data.