Apparatus and method for encoding and decoding signals

摘要

New capabilities will allow conventional broadcast transmission to be available to mobile devices. The present embodiments describe an apparatus and method for encoding and decoding signals. A method includes the steps of generating data blocks, encoding a first set of data blocks using a first encoding rate, encoding a second set of data blocks using a second encoding rate, and generating a control packet, the control packet identifying the first set of data blocks and the first encoding rate, and identifying the second set of data blocks and the second encoding rate. An apparatus includes a first decoder receiving data and decoding a first subset of the data, including a control packet, at a first decoding rate and a controller controlling the operation of the first decoder based on the decoded control packet.

主权项

1. 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.