Television – Nonpictorial data packet in television format – Data separation or detection
Patent
1995-03-31
1997-07-22
Lee, Michael H.
Television
Nonpictorial data packet in television format
Data separation or detection
348473, 370505, 370528, H04N 700, H04N 1100
Patent
active
056508255
ABSTRACT:
An apparatus and method, applicable to variable bit rate video and constant bit rate video, is disclosed for replacing "stuffing bytes" with private data. The invention takes advantage of the otherwise wasted resources dedicated to "stuffing" in a data stream in order to insert private data. This is accomplished by inserting useful private data in a Transport Stream instead of the stuffing bits. That is, effectively, a re-multiplexing operation occurs where, based on the existence of certain conditions in a Transport Packet (e.g., stuffing bytes exist), the information necessary to replace stuffing bytes with private data yet still comply with established standards is accomplished. This data generally is referred to as privatestuff data in order to distinguish it from typical private data which may otherwise be encoded into a Transport Stream. The stuffing bytes removed from the Transport Packet may come from an adaptation field in the Transport Header or directly from the Transport Payload or both.
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Hopkins, "Digital Terrestrial HDTV For North America: The Grand Alliance HDTV System", IEEE Transactions on Consumer Electronics, vol. 40, No. 3, pp. 185-197 (Aug. 1994).
Egawa Ren
Naimpally Saiprasad V.
Lee Michael H.
Matsushita Electric Corporation of America
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