【專利核准公告】P99010A-低複雜度之反轉換計算方法「LOW-COMPLEXITY INVERSE TRANSFORM COMPUTATION METHOD」(已終止維護)
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專利國別 |
美國 |
發表日期 |
2014-10-14 09:47:02 |
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本校案號 |
P99010A |
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專利名稱 |
複雜度之反轉換計算方法「LOW-COMPLEXITY INVERSE TRANSFORM COMPUTATION METHOD」 |
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發明人 |
陳自強、夏夢麟 |
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所屬院 |
工學院 |
提案單位 |
電機工程學系暨研究所 |
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類型 |
發明 |
專利權人 |
國立中正大學 |
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申請號 |
13/116,459 |
申請日期 |
2011-05-26 |
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公開號 |
0 |
公開日期 |
2012-06-28 |
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證書號 |
US 8,745,116 B2 |
核准日期 |
2014-06-03 |
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國際分類號 |
G06F-015/00(2006.01) |
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專利權期間 |
2011.05.26~2031.05.26(延長534天至2032.11.10) |
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專利摘要 |
A low-complexity inverse transform computation method, comprising following steps: firstly, analyzing an end-of-block (EOB) point in a matrix of a block; next, determining whether a bottom-left corner coefficient or a top-right coefficient before said EOB point is zero, and if it is zero, reducing further size of said matrix; then, determining an adequate operation mode to reduce computational complexity; and finally, realizing 2-D inverse transform through simplified 1-D inverse transforms. An inverse transform process of said method mentioned above is capable of lowering computation amount, reducing burden and computational complexity of a decompression system, and shortening effectively computation time of said 2-D inverse transform, such that it is applicable to inverse transforms of various video and still image codecs. |
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