Sub-picture level pass through

Details Sub-picture level pass through Sub-picture level pass through

2005-09-27

2005-09-27

Rao, Andy (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240040

Reexamination Certificate

active

06950464

ABSTRACT:
The invention described herein improves and expedites compressed video data delivery by providing systems and methods for transcoding and pass through on a sub-picture level. For example, in MPEG embodiments described herein, transcoding and compressed video data pass through may occur on a macroblock or slice level. This permits portions of a picture that need no rate reduction to be passed through without transcoding. The invention may also implement pass through on a picture by picture basis. Accordingly, the invention may determine transcoding or pass through for each picture or picture subregion. Thus, systems and methods described herein provide flexible compressed video data transcoding and pass through, as determined by varying bit rate demands of compressed video data transmission.

REFERENCES:
patent: 5963260 (1999-10-01), Bakhmutsky
patent: 6181711 (2001-01-01), Zhang et al.
patent: 6507618 (2003-01-01), Wee et al.
patent: 6577679 (2003-06-01), Apostolopoulos
patent: 6650705 (2003-11-01), Vetro et al.
patent: 6711212 (2004-03-01), Lin
ISO/IEP “Information Technology-Generic coding Of Moving Pictures And Associated Audio: Systems”, ISO/IEC 13818-1, Nov. 13, 1994, 135 pages.
ISO/IEP “Information Technology-Generic Coding Of Moving Pictures And Associated Audio Information: Video”, ISO/IEC 13818-2, 1995, 209 pages.

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