Efficient transmission of quarter-VGA images using DVC codecs

Details Efficient transmission of quarter-VGA images using DVC codecs Efficient transmission of quarter-VGA images using DVC codecs

2006-03-21

2006-03-21

Do, Anh Hong (Department: 2627)

Image analysis

Image compression or coding

C382S236000

Reexamination Certificate

active

07016542

ABSTRACT:
Methods and apparatus for encoding and decoding video subframes (e.g., lower-resolution video) with a DVC video coder are disclosed. The disclosed embodiments allow a DVC video coder to efficiently code a subframe. The disclosed encoder embodiments redistribute blocks of data from a subframe to correspond with the staggered locations used for video segment creation. This separates video segments at the DVC coder output into two group—those largely or completely composed of subframe data, and those containing discardable data. The present invention allows a DVC coder to be used efficiently for several different video resolutions, or in a low-resolution system.

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