发明名称 |
DCT DOMAIN CONVERSION OF A VIDEO SIGNAL TO A LOWER DEFINITION SIGNAL |
摘要 |
Embodiments of the invention comprise a new device and technique to realize an improved conversion of a high resolution signal to a lower resolution signal. This improvement is achieved by replacing an identity matrix with a diagonal matrix in a DCT domain. The diagonal matrix value B is set to be a value that corresponds to a minimized value and/or a threshold value. Successive results form invention are utilized to establish approximate equivalency, where the difference form the absolute true value is less than a predetermined threshold value. |
申请公布号 |
EP1221261(A1) |
申请公布日期 |
2002.07.10 |
申请号 |
EP20000968456 |
申请日期 |
2000.09.28 |
申请人 |
CONEXANT SYSTEMS, INC. |
发明人 |
AZADEGAN, FARAMARZ;LENGWEHASATIT, KRISDA |
分类号 |
G06T3/40;H04N7/01;H04N7/26;H04N7/46;H04N7/50;(IPC1-7):H04N7/50;G06F17/14 |
主分类号 |
G06T3/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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