Temporal and spatial scaleable coding for video object planes
CA 2238900 C · Owner: Chen, Xuemin · Inventors: Narasimhan, Mandayam; Chen, Xuemin; Luthra, Ajay
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Temporal and spatial scaling of video images including video object planes (VOPs) (117 118, 119, 405, 415, 420, 430, 520, 522 524, 526, 532, 542, 705, 730, 750, 760 780, 790, 805, 815, 820, 830, 850, 860 880, 890) in an input digital video sequence is provided. Coding efficiency is improved by adaptively compressing scaled field mode video. Upsampled VOPs (450, 490, 522, 542, 750, 790) in the enhancement layer are reordered to provide a greater correlation with the input video sequence based on a linear criteria. The resulting residue is coded using a spatial transformation such as the DCT. A motion compensation scheme is used for coding enhancement layer VOPs (450 460, 480, 490, 522, 524, …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 28, 1998 and granted October 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2020.
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