发明名称 |
Fast DCT apparatus |
摘要 |
An apparatus and a method for performing discrete cosine transformation (DCT) are presented. The apparatus includes an arithmetic circuit interconnected with a transpose memory. The arithmetic circuit includes a combinatorial circuit for calculating a DCT without using an intermediate clocked storage unit. The combinatorial circuit includes a predetermined number of sequentially arranged stages for implementing the DCT. The apparatus may optionally include a controller for controlling operation of the apparatus and a multiplexer for multiplexing data input to the apparatus and data from the transpose memory. An apparatus and a method for performing inverse discrete cosine transformation (IDCT) are also presented.
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申请公布号 |
US6195674(B1) |
申请公布日期 |
2001.02.27 |
申请号 |
US19980025506 |
申请日期 |
1998.02.18 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
ELBOURNE TREVOR ROBERT;PULVER MARK |
分类号 |
G06F9/38;G06F17/14;G06T1/20;G06T9/00;G06T15/00;G11C7/10;H04N7/26;(IPC1-7):G06F17/14 |
主分类号 |
G06F9/38 |
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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