| 发明名称 |
Reversible DCT for lossless-lossy compression |
| 摘要 |
A reversible Discrete Cosine Transform (DCT) is described. The reversible DCT may be part of a compressor in a system. The system may include a decompressor with a reversible inverse DCT for lossless decompression or a legacy decompressor with an inverse DCT for lossy decompression.
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| 申请公布号 |
US6792155(B2) |
申请公布日期 |
2004.09.14 |
| 申请号 |
US20010782234 |
申请日期 |
2001.02.12 |
| 申请人 |
RICOH COMPANY, LTD.;RICOH CORPORATION |
发明人 |
SCHWARTZ EDWARD L.;ZANDI AHMAD |
| 分类号 |
G06F1/02;G06F5/00;G06F7/548;G06T1/20;G06T9/00;H03M7/30;H04N7/30;(IPC1-7):G06K9/40 |
主分类号 |
G06F1/02 |
| 代理机构 |
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代理人 |
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