Method and apparatus to detect anchor frames from digital...

Details Method and apparatus to detect anchor frames from digital... Method and apparatus to detect anchor frames from digital...

2004-09-28

2009-10-20

Vo, Tung (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240160, C375S368000

Reexamination Certificate

active

07606303

ABSTRACT:
A method (60) and apparatus process video in a multiple encoder system by identifying (61) those frames that were originally encoded as anchor frames in the first encoder and ensuring that a second encoder encodes (65) these identified frames as anchor frames rather than bidirectional frames or non-anchor frames. In addition, the second encoder identifies (62) those frames that were originally encoded as non-anchor frames in the first encoder and encodes (66) the non-anchor frames, such as bidirectional frames, as non-anchor frames during the second encoding process. Once the anchor and non-anchor frames are identified, a frame-type pattern is determined (63) by the first encoder and synchronizes (64) the second encoder to the frame-type pattern.

REFERENCES:
patent: 5929916 (1999-07-01), Legall et al.
patent: 6307594 (2001-10-01), Yamauchi
patent: 6771825 (2004-08-01), Hurst, Jr.
patent: 6865240 (2005-03-01), Kawataka
patent: 7209635 (2007-04-01), Hatabu
patent: 2004/0179137 (2004-09-01), Iwata et al.

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