System and method for representing compressed information
AssigneeAT&T Corp.
InventorsJames David Johnson, Schuyler Reynier Quackenbush
Life of this patent
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Abstract
The present invention provides a system and method for storing re-synchronization, error correction and/or error detection data within an existing communication protocol, while still maintaining full compliance to a standard, such as the MPEG-2 AAC standard. By doing so, data information can still be passed from an encoder to a decoder via a channel using an existing and well known standard transport protocol. However, the existing well known transport protocol can now include the data necessary for synchronization of the decoder to the received raw data, along with error detection and error correction by the decoder.
Claims29
A bitstream in computer-readable medium, the bitstream obeying the MPEG-2 or the MPEG-4 protocol that permits the transmission of private data in the data stream element (DSE) field of the obeyed protocol, the bitstream generated according to a method comprising:
- receiving data from a data source;
- determining syntax information for the data;
- encoding the data and the syntax information into an encoded bitstream, at least a portion of the syntax information being included in the DSE field and the interpretation of said portion of the syntax information being unspecified by the obeyed protocol;
- and
- transmitting the encoded bitstream.
An apparatus that transmits data in a bitstream, the bitstream obeying the MPEG-2 or the MPEG-4 protocol that permits the transmission of private data in a private data portion of the bitstream, the apparatus comprising:
- means for transmitting a bitstream that receives data from a data source, determines syntax information for the data, encodes the data and the syntax information into an encoded bitstream, at least a portion of the syntax information being included in the private data portion of the encoded bitstream, and transmits the encoded bitstream, the interpretation of said portion of the syntax information being unspecified by the obeyed protocol.
A method comprising:
- receiving a bitstream having a plurality of frame portions, the bitstream obeying the MPEG-2 or the MPEG-4 protocol that permits the transmission of private data in a private data portion, the interpretation of at least a portion of the data in the private data portion being unspecified by obeyed protocol, the bitstream including encoded data and further including syntax information for the encoded data, at least a portion of the syntax information being included in the private data portion;
- and
- obtaining said portion of the syntax information from said private data portion.
Dependencies are inferred from the claim text.