US Patent No: 7,133,449
Number of patents in Portfolio can not be more than 2000
Apparatus and method for conserving memory in a fine granularity scalability coding system
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Nov 7, 2006
Issued date -
Jun 26, 2001
filing date -
09/892,010
serial no -
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Abstract
Decoding time stamps (DTSs) and presentation time stamps (PTSs) are used in fine granularity scalability (FGS) coding during MPEG-4 video coding. An input video is encoded in an FGS encoder into a base layer bitstream and an enhancement bitstream. The bitstreams are provided over a variable bandwidth channel to an FGS decoder. The DTSs and the PTSs are selected during encoding as to conserve memory during FGS decoding. The video object planes (VOP) in the bitstreams include base VOPs and FGS VOPs, and may also include fine granularity temporal scalability (FGST) VOPs. The FGS VOPs and the FGST VOPs may be organized in the same layer or in different layers. The base VOPs are combined with the FGS VOPs and the FGST VOPs to generate enhanced VOPs.
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,963,257 Video coding device and video decoding device | 36 | 1998 | |
| 6,023,299 Video coding device and video decoding device | 9 | 1999 | |
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| 6,639,943 Hybrid temporal-SNR fine granular scalability video coding | 43 | 2000 | |
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| 5,886,736 Synchronization of a stereoscopic video sequence | 55 | 1996 | |
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| 6,542,549 Method and model for regulating the computational and memory requirements of a compressed bitstream in a video decoder | 21 | 1999 | |
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| 5,978,155 Adapters for correcting spherical aberrations of objective lens | 4 | 1998 | |
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| 6,567,427 Image signal multiplexing apparatus and methods, image signal demultiplexing apparatus and methods, and transmission media | 22 | 1999 | |
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